From b50ee1969493402b5b2380da4ee411573f838b63 Mon Sep 17 00:00:00 2001 From: Ajin Cherian Date: Thu, 13 Oct 2022 08:08:47 -0400 Subject: [PATCH v30 1/4] Functions to deparse DDL commands. This patch provides JSON blobs representing DDL commands, which can later be re-processed into plain strings by well-defined sprintf-like expansion. These JSON objects are intended to allow for machine-editing of the commands, by replacing certain nodes within the objects. Much of the information in the output blob actually comes from system catalogs, not from the command parse node, as it is impossible to reliably construct a fully-specified command (i.e. one not dependent on search_path etc) looking only at the parse node. This provides a base for logical replication of DDL statements. Currently, the patch has support for: CREATE/ALTER/DROP TABLE -- Note #1, Note #2 CREATE/ALTER/DROP SEQUENCE CREATE/ALTER/DROP SCHEMA CREATE/ALTER FUNCTION/PROCEDURE CREATE/ALTER TRIGGER CREATE/DROP INDEX CREATE/DROP OPERATOR [CLASS/FAMILY] CREATE/ALTER/DROP CAST CREATE/ALTER/DROP DOMAIN CREATE/ALTER/DROP TYPE CREATE/ALTER/DROP CONVERSION CREATE/ALTER/DROP POLICY CREATE/ALTER/DROP EXTENSION CREATE/ALTER/DROP FOREIGN DATA WRAPPER CREATE/ALTER/DROP RULE CREATE/ALTER/DROP SERVER CREATE/ALTER/DROP COLLATION GRANT REVOKE REFRESH MATERIALIZED VIEW CREATE/ALTER/DROP TEXT SEARCH CONFIGURATION/PARSER/DICTIONARY/TEMPLATE CREATE/DROP TRANSFORM CREATE/ALTER/DROP USER MAPPING CREATE/ALTER/DROP VIEW -- Note #4 CREATE/ALTER/DROP MATERIALIZED VIEW CREATE/ALTER/DROP STATISTICS (Note #1) Note that some recently introduced DDLs(e.g. DDLs related to PARTITIONED TABLE) are unsupported. We can extend it as we need more functionality for DDL replication. (Note #2) Note that, for ATTACH/DETACH PARTITION, we haven't added extra logic on the subscriber to handle the case where the table on the publisher is a PARTITIONED TABLE while the target table on the subcriber side is a NORMAL table. We will research this more and improve it later. (Note #3) Removed an undesirable 'on' from the identity string for TRANSFORM in getObjectIdentityParts. This is needed to make deparse of DROP TRANSFORM command work since 'on' is not present in the current DROP TRANSFORM syntax. For example, the correct syntax is drop transform trf for int language sql; instead of drop transform trf for int on language sql; (Note #4) Note that, for VIEWSTMT, We created pg_get_viewdef_internal to get the SELECT query of the pending VIEWSTMT. In the case that the CREATE VIEW command is still in progress, we would need to search the system cache RULERELNAME to get the rewrite rule of the view as oppose to querying pg_rewrite as in pg_get_viewdef_worker(), the latter will return empty result. --- src/backend/catalog/aclchk.c | 4 + src/backend/catalog/objectaddress.c | 2 +- src/backend/commands/Makefile | 2 + src/backend/commands/collationcmds.c | 9 +- src/backend/commands/ddl_deparse.c | 8850 ++++++++++++++++++ src/backend/commands/ddl_json.c | 764 ++ src/backend/commands/meson.build | 2 + src/backend/commands/sequence.c | 33 + src/backend/tcop/utility.c | 3 +- src/backend/utils/adt/format_type.c | 3 +- src/backend/utils/adt/regproc.c | 52 + src/backend/utils/adt/ruleutils.c | 252 +- src/include/catalog/pg_proc.dat | 6 + src/include/commands/collationcmds.h | 3 +- src/include/commands/sequence.h | 1 + src/include/tcop/ddl_deparse.h | 23 + src/include/tcop/deparse_utility.h | 1 + src/include/utils/aclchk_internal.h | 1 + src/include/utils/builtins.h | 2 + src/include/utils/ruleutils.h | 19 + src/test/regress/expected/object_address.out | 2 +- src/tools/pgindent/typedefs.list | 4 + 22 files changed, 9963 insertions(+), 75 deletions(-) create mode 100755 src/backend/commands/ddl_deparse.c create mode 100644 src/backend/commands/ddl_json.c create mode 100644 src/include/tcop/ddl_deparse.h diff --git a/src/backend/catalog/aclchk.c b/src/backend/catalog/aclchk.c index aa5a2ed948..7dc190ddeb 100644 --- a/src/backend/catalog/aclchk.c +++ b/src/backend/catalog/aclchk.c @@ -385,7 +385,11 @@ ExecuteGrantStmt(GrantStmt *stmt) ereport(ERROR, (errcode(ERRCODE_FEATURE_NOT_SUPPORTED), errmsg("grantor must be current user"))); + + istmt.grantor_uid = grantor; } + else + istmt.grantor_uid = InvalidOid; /* * Turn the regular GrantStmt into the InternalGrant form. diff --git a/src/backend/catalog/objectaddress.c b/src/backend/catalog/objectaddress.c index 284ca55469..084acebbe2 100644 --- a/src/backend/catalog/objectaddress.c +++ b/src/backend/catalog/objectaddress.c @@ -6001,7 +6001,7 @@ getObjectIdentityParts(const ObjectAddress *object, transformType = format_type_be_qualified(transform->trftype); transformLang = get_language_name(transform->trflang, false); - appendStringInfo(&buffer, "for %s on language %s", + appendStringInfo(&buffer, "for %s language %s", transformType, transformLang); if (objname) diff --git a/src/backend/commands/Makefile b/src/backend/commands/Makefile index 48f7348f91..171dfb2800 100644 --- a/src/backend/commands/Makefile +++ b/src/backend/commands/Makefile @@ -29,6 +29,8 @@ OBJS = \ copyto.o \ createas.o \ dbcommands.o \ + ddl_deparse.o \ + ddl_json.o \ define.o \ discard.o \ dropcmds.o \ diff --git a/src/backend/commands/collationcmds.c b/src/backend/commands/collationcmds.c index fcfc02d2ae..bb21ccd3f1 100644 --- a/src/backend/commands/collationcmds.c +++ b/src/backend/commands/collationcmds.c @@ -50,7 +50,8 @@ typedef struct * CREATE COLLATION */ ObjectAddress -DefineCollation(ParseState *pstate, List *names, List *parameters, bool if_not_exists) +DefineCollation(ParseState *pstate, List *names, List *parameters, + bool if_not_exists, ObjectAddress *from_collid) { char *collName; Oid collNamespace; @@ -137,6 +138,12 @@ DefineCollation(ParseState *pstate, List *names, List *parameters, bool if_not_e if (!HeapTupleIsValid(tp)) elog(ERROR, "cache lookup failed for collation %u", collid); + /* make from existing collationid available to callers */ + if (from_collid && OidIsValid(collid)) + ObjectAddressSet(*from_collid, + CollationRelationId, + collid); + collprovider = ((Form_pg_collation) GETSTRUCT(tp))->collprovider; collisdeterministic = ((Form_pg_collation) GETSTRUCT(tp))->collisdeterministic; collencoding = ((Form_pg_collation) GETSTRUCT(tp))->collencoding; diff --git a/src/backend/commands/ddl_deparse.c b/src/backend/commands/ddl_deparse.c new file mode 100755 index 0000000000..a4ab3afca3 --- /dev/null +++ b/src/backend/commands/ddl_deparse.c @@ -0,0 +1,8850 @@ +/*------------------------------------------------------------------------- + * + * ddl_deparse.c + * Functions to convert utility commands to machine-parseable + * representation + * + * Portions Copyright (c) 1996-2022, PostgreSQL Global Development Group + * Portions Copyright (c) 1994, Regents of the University of California + * + * NOTES + * + * This is intended to provide JSON blobs representing DDL commands, which can + * later be re-processed into plain strings by well-defined sprintf-like + * expansion. These JSON objects are intended to allow for machine-editing of + * the commands, by replacing certain nodes within the objects. + * + * Much of the information in the output blob actually comes from system + * catalogs, not from the command parse node, as it is impossible to reliably + * construct a fully-specified command (i.e. one not dependent on search_path + * etc) looking only at the parse node. + * + * IDENTIFICATION + * src/backend/commands/ddl_deparse.c + * + *------------------------------------------------------------------------- + */ +#include "postgres.h" +#include "tcop/ddl_deparse.h" +#include "access/amapi.h" +#include "access/table.h" +#include "access/relation.h" +#include "catalog/namespace.h" +#include "catalog/pg_am.h" +#include "catalog/pg_attribute.h" +#include "catalog/pg_authid.h" +#include "catalog/pg_cast.h" +#include "catalog/pg_class.h" +#include "catalog/pg_collation.h" +#include "catalog/pg_constraint.h" +#include "catalog/pg_conversion.h" +#include "catalog/pg_depend.h" +#include "catalog/pg_extension.h" +#include "catalog/pg_foreign_data_wrapper.h" +#include "catalog/pg_foreign_server.h" +#include "catalog/pg_inherits.h" +#include "catalog/pg_language.h" +#include "catalog/pg_largeobject.h" +#include "catalog/pg_namespace.h" +#include "catalog/pg_opclass.h" +#include "catalog/pg_operator.h" +#include "catalog/pg_opfamily.h" +#include "catalog/pg_policy.h" +#include "catalog/pg_proc.h" +#include "catalog/pg_range.h" +#include "catalog/pg_rewrite.h" +#include "catalog/pg_sequence.h" +#include "catalog/pg_statistic_ext.h" +#include "catalog/pg_transform.h" +#include "catalog/pg_ts_config.h" +#include "catalog/pg_ts_dict.h" +#include "catalog/pg_ts_parser.h" +#include "catalog/pg_ts_template.h" +#include "catalog/pg_type.h" +#include "catalog/pg_user_mapping.h" +#include "commands/defrem.h" +#include "commands/sequence.h" +#include "commands/tablespace.h" +#include "foreign/foreign.h" +#include "funcapi.h" +#include "lib/ilist.h" +#include "mb/pg_wchar.h" +#include "nodes/makefuncs.h" +#include "nodes/nodeFuncs.h" +#include "nodes/parsenodes.h" +#include "optimizer/optimizer.h" +#include "rewrite/rewriteHandler.h" +#include "utils/builtins.h" +#include "utils/fmgroids.h" +#include "utils/guc.h" +#include "utils/jsonb.h" +#include "utils/lsyscache.h" +#include "utils/memutils.h" +#include "utils/rel.h" +#include "utils/ruleutils.h" +#include "utils/syscache.h" + +/* Estimated length of the generated jsonb string */ +#define JSONB_ESTIMATED_LEN 128 + +/* + * Before they are turned into JSONB representation, each command is + * represented as an object tree, using the structs below. + */ +typedef enum +{ + ObjTypeNull, + ObjTypeBool, + ObjTypeString, + ObjTypeArray, + ObjTypeInteger, + ObjTypeFloat, + ObjTypeObject +} ObjType; + +/* + * Represent the command as an object tree. + */ +typedef struct ObjTree +{ + slist_head params; /* Object tree parameters */ + int numParams; /* Number of parameters in the object tree */ + StringInfo fmtinfo; /* Format string of the ObjTree */ + bool present; /* Indicates if boolean value should be stored */ +} ObjTree; + +/* + * An element of an object tree(ObjTree). + */ +typedef struct ObjElem +{ + char *name; /* Name of object element */ + ObjType objtype; /* Object type */ + + union + { + bool boolean; + char *string; + int64 integer; + float8 flt; + ObjTree *object; + List *array; + } value; /* Store the object value based on the object + * type */ + slist_node node; /* Used in converting back to ObjElem + * structure */ +} ObjElem; + +/* + * Reduce some unncessary string from the output json stuff when verbose + * and "present" member is false. This means these strings won't be merged into + * the last DDL command. + */ +bool verbose = true; + +static void append_array_object(ObjTree *tree, char *name, List *array); +static void append_bool_object(ObjTree *tree, char *name, bool value); +static void append_float_object(ObjTree *tree, char *name, float8 value); +static void append_null_object(ObjTree *tree, char *name); +static void append_object_object(ObjTree *tree, char *name, ObjTree *value); +static char *append_object_to_format_string(ObjTree *tree, char *sub_fmt); +static void append_premade_object(ObjTree *tree, ObjElem *elem); +static void append_string_object(ObjTree *tree, char *name, char *value); +static void format_type_detailed(Oid type_oid, int32 typemod, + Oid *nspid, char **typname, char **typemodstr, + bool *typarray); +static List *FunctionGetDefaults(text *proargdefaults); +static ObjElem *new_object(ObjType type, char *name); +static ObjTree *new_objtree_for_qualname_id(Oid classId, Oid objectId); +static ObjTree *new_objtree_for_rolespec(RoleSpec *spec); +static ObjElem *new_object_object(ObjTree *value); +static ObjTree *new_objtree_VA(char *fmt, int numobjs,...); +static ObjElem *new_string_object(char *value); +static JsonbValue *objtree_to_jsonb_rec(ObjTree *tree, JsonbParseState *state); +static void pg_get_indexdef_detailed(Oid indexrelid, + char **index_am, + char **definition, + char **reloptions, + char **tablespace, + char **whereClause); +static char *RelationGetColumnDefault(Relation rel, AttrNumber attno, + List *dpcontext, List **exprs); +static const char *stringify_objtype(ObjectType objtype); + +static ObjTree *deparse_ColumnDef(Relation relation, List *dpcontext, bool composite, + ColumnDef *coldef, bool is_alter, List **exprs); +static ObjTree *deparse_ColumnIdentity(Oid seqrelid, char identity, bool alter_table); +static ObjTree *deparse_ColumnSetOptions(AlterTableCmd *subcmd); +static ObjTree *deparse_DefineStmt_Collation(Oid objectId, DefineStmt *define, + ObjectAddress fromCollid); +static ObjTree *deparse_DefineStmt_Operator(Oid objectId, DefineStmt *define); +static ObjTree *deparse_DefineStmt_Type(Oid objectId, DefineStmt *define); +static ObjTree *deparse_DefineStmt_TSConfig(Oid objectId, DefineStmt *define, ObjectAddress copied); +static ObjTree *deparse_DefineStmt_TSParser(Oid objectId, DefineStmt *define); +static ObjTree *deparse_DefineStmt_TSDictionary(Oid objectId, DefineStmt *define); +static ObjTree *deparse_DefineStmt_TSTemplate(Oid objectId, DefineStmt *define); + +static ObjTree *deparse_DefElem(DefElem *elem, bool is_reset); +static ObjTree *deparse_FunctionSet(VariableSetKind kind, char *name, char *value); +static ObjTree *deparse_OnCommitClause(OnCommitAction option); +static ObjTree *deparse_RelSetOptions(AlterTableCmd *subcmd); + +static inline ObjElem *deparse_Seq_Cache(ObjTree *parent, Form_pg_sequence seqdata, bool alter_table); +static inline ObjElem *deparse_Seq_Cycle(ObjTree *parent, Form_pg_sequence seqdata, bool alter_table); +static inline ObjElem *deparse_Seq_IncrementBy(ObjTree *parent, Form_pg_sequence seqdata, bool alter_table); +static inline ObjElem *deparse_Seq_Minvalue(ObjTree *parent, Form_pg_sequence seqdata, bool alter_table); +static inline ObjElem *deparse_Seq_Maxvalue(ObjTree *parent, Form_pg_sequence seqdata, bool alter_table); +static ObjElem *deparse_Seq_OwnedBy(ObjTree *parent, Oid sequenceId, bool alter_table); +static inline ObjElem *deparse_Seq_Restart(ObjTree *parent, Form_pg_sequence_data seqdata); +static inline ObjElem *deparse_Seq_Startwith(ObjTree *parent, Form_pg_sequence seqdata, bool alter_table); +static inline ObjElem *deparse_Type_Storage(ObjTree *parent, Form_pg_type typForm); +static inline ObjElem *deparse_Type_Receive(ObjTree *parent, Form_pg_type typForm); +static inline ObjElem *deparse_Type_Send(ObjTree *parent, Form_pg_type typForm); +static inline ObjElem *deparse_Type_Typmod_In(ObjTree *parent, Form_pg_type typForm); +static inline ObjElem *deparse_Type_Typmod_Out(ObjTree *parent, Form_pg_type typForm); +static inline ObjElem *deparse_Type_Analyze(ObjTree *parent, Form_pg_type typForm); +static inline ObjElem *deparse_Type_Subscript(ObjTree *parent, Form_pg_type typForm); + +static List *deparse_InhRelations(Oid objectId); +static List *deparse_TableElements(Relation relation, List *tableElements, List *dpcontext, + bool typed, bool composite); + +/* + * Add common clauses to CreatePolicy or AlterPolicy deparse objects + */ +static void +add_policy_clauses(ObjTree *policyStmt, Oid policyOid, List *roles, + bool do_qual, bool do_with_check) +{ + Relation polRel = table_open(PolicyRelationId, AccessShareLock); + HeapTuple polTup = get_catalog_object_by_oid(polRel, Anum_pg_policy_oid, policyOid); + Form_pg_policy polForm; + + if (!HeapTupleIsValid(polTup)) + elog(ERROR, "cache lookup failed for policy %u", policyOid); + + polForm = (Form_pg_policy) GETSTRUCT(polTup); + + /* add the "ON table" clause */ + append_object_object(policyStmt, "ON %{table}D", + new_objtree_for_qualname_id(RelationRelationId, + polForm->polrelid)); + + /* + * Add the "TO role" clause, if any. In the CREATE case, it always + * contains at least PUBLIC, but in the ALTER case it might be empty. + */ + if (roles) + { + List *list = NIL; + ListCell *cell; + + foreach(cell, roles) + { + RoleSpec *spec = (RoleSpec *) lfirst(cell); + + list = lappend(list, + new_object_object(new_objtree_for_rolespec(spec))); + } + append_array_object(policyStmt, "TO %{role:, }R", list); + } + else + { + append_bool_object(policyStmt, "present", false); + } + + /* add the USING clause, if any */ + if (do_qual) + { + Datum deparsed; + Datum storedexpr; + bool isnull; + + storedexpr = heap_getattr(polTup, Anum_pg_policy_polqual, + RelationGetDescr(polRel), &isnull); + if (isnull) + elog(ERROR, "invalid NULL polqual expression in policy %u", policyOid); + deparsed = DirectFunctionCall2(pg_get_expr, storedexpr, polForm->polrelid); + append_string_object(policyStmt, "USING (%{expression}s)", + TextDatumGetCString(deparsed)); + } + else + append_bool_object(policyStmt, "present", false); + + /* add the WITH CHECK clause, if any */ + if (do_with_check) + { + Datum deparsed; + Datum storedexpr; + bool isnull; + + storedexpr = heap_getattr(polTup, Anum_pg_policy_polwithcheck, + RelationGetDescr(polRel), &isnull); + if (isnull) + elog(ERROR, "invalid NULL polwithcheck expression in policy %u", policyOid); + deparsed = DirectFunctionCall2(pg_get_expr, storedexpr, polForm->polrelid); + append_string_object(policyStmt, "WITH CHECK (%{expression}s)", + TextDatumGetCString(deparsed)); + } + else + append_bool_object(policyStmt, "present", false); + + relation_close(polRel, AccessShareLock); +} + +/* Append an array parameter to a tree */ +static void +append_array_object(ObjTree *tree, char *sub_fmt, List *array) +{ + ObjElem *param; + char *object_name; + + Assert(sub_fmt); + + if (list_length(array) == 0) + return; + + if (!verbose) + { + ListCell *lc; + + /* Extract the ObjElems whose present flag is true */ + foreach(lc, array) + { + ObjElem *elem = (ObjElem *) lfirst(lc); + + Assert(elem->objtype == ObjTypeObject || + elem->objtype == ObjTypeString); + + if (!elem->value.object->present && + elem->objtype == ObjTypeObject) + array = foreach_delete_current(array, lc); + } + + } + + object_name = append_object_to_format_string(tree, sub_fmt); + + param = new_object(ObjTypeArray, object_name); + param->value.array = array; + append_premade_object(tree, param); +} + +/* Append a boolean parameter to a tree */ +static void +append_bool_object(ObjTree *tree, char *sub_fmt, bool value) +{ + ObjElem *param; + char *object_name = sub_fmt; + bool is_present_flag = false; + + Assert(sub_fmt); + + /* + * Check if the present is part of the format string and store the boolean + * value + */ + if (strcmp(sub_fmt, "present") == 0) + { + is_present_flag = true; + tree->present = value; + } + + if (!verbose && !tree->present) + return; + + if (!is_present_flag) + object_name = append_object_to_format_string(tree, sub_fmt); + + param = new_object(ObjTypeBool, object_name); + param->value.boolean = value; + append_premade_object(tree, param); +} + +/* + * Append a float8 parameter to a tree. + */ +static void +append_float_object(ObjTree *tree, char *sub_fmt, float8 value) +{ + ObjElem *param; + char *object_name; + + Assert(sub_fmt); + + object_name = append_object_to_format_string(tree, sub_fmt); + + param = new_object(ObjTypeFloat, object_name); + param->value.flt = value; + append_premade_object(tree, param); +} + +/* + * Append the input format string to the ObjTree. + */ +static void +append_format_string(ObjTree *tree, char *sub_fmt) +{ + int len; + char *fmt; + + if (tree->fmtinfo == NULL) + return; + + fmt = tree->fmtinfo->data; + len = tree->fmtinfo->len; + + /* Add a separator if necessary */ + if (len > 0 && fmt[len - 1] != ' ') + appendStringInfoSpaces(tree->fmtinfo, 1); + + appendStringInfoString(tree->fmtinfo, sub_fmt); +} + +/* Append a NULL object to a tree */ +static void +append_null_object(ObjTree *tree, char *sub_fmt) +{ + char *object_name; + + Assert(sub_fmt); + + if (!verbose) + return; + + object_name = append_object_to_format_string(tree, sub_fmt); + + append_premade_object(tree, new_object(ObjTypeNull, object_name)); +} + +/* Append an object parameter to a tree */ +static void +append_object_object(ObjTree *tree, char *sub_fmt, ObjTree *value) +{ + ObjElem *param; + char *object_name; + + Assert(sub_fmt); + + if (!verbose && !value->present) + return; + + object_name = append_object_to_format_string(tree, sub_fmt); + + param = new_object(ObjTypeObject, object_name); + param->value.object = value; + append_premade_object(tree, param); +} + +/* + * Return the object name which is extracted from the input "*%{name[:.]}*" + * style string. And append the input format string to the ObjTree. + */ +static char * +append_object_to_format_string(ObjTree *tree, char *sub_fmt) +{ + StringInfoData object_name; + const char *end_ptr; + const char *cp; + bool start_copy = false; + + if (sub_fmt == NULL || tree->fmtinfo == NULL) + return sub_fmt; + + initStringInfo(&object_name); + end_ptr = sub_fmt + strlen(sub_fmt); + + for (cp = sub_fmt; cp < end_ptr; cp++) + { + if (*cp == '{') + { + start_copy = true; + continue; + } + + if (!start_copy) + continue; + + if (*cp == ':' || *cp == '}') + break; + + appendStringInfoCharMacro(&object_name, *cp); + } + + if (object_name.len == 0) + elog(ERROR, "object name not found"); + + append_format_string(tree, sub_fmt); + + return object_name.data; +} + +/* Append a preallocated parameter to a tree */ +static inline void +append_premade_object(ObjTree *tree, ObjElem *elem) +{ + slist_push_head(&tree->params, &elem->node); + tree->numParams++; +} + +/* Append a string parameter to a tree */ +static void +append_string_object(ObjTree *tree, char *sub_fmt, char *value) +{ + ObjElem *param; + char *object_name; + + Assert(sub_fmt); + + if (!verbose && (value == NULL || value[0] == '\0')) + return; + + object_name = append_object_to_format_string(tree, sub_fmt); + + param = new_object(ObjTypeString, object_name); + param->value.string = value; + append_premade_object(tree, param); +} + +/* + * Similar to format_type_extended, except we return each bit of information + * separately: + * + * - nspid is the schema OID. For certain SQL-standard types which have weird + * typmod rules, we return InvalidOid; the caller is expected to not schema- + * qualify the name nor add quotes to the type name in this case. + * + * - typname is set to the type name, without quotes + * + * - typemodstr is set to the typemod, if any, as a string with parentheses + * + * - typarray indicates whether []s must be added + * + * We don't try to decode type names to their standard-mandated names, except + * in the cases of types with unusual typmod rules. + */ +static void +format_type_detailed(Oid type_oid, int32 typemod, + Oid *nspid, char **typname, char **typemodstr, + bool *typarray) +{ + HeapTuple tuple; + Form_pg_type typeform; + Oid array_base_type; + + tuple = SearchSysCache1(TYPEOID, ObjectIdGetDatum(type_oid)); + if (!HeapTupleIsValid(tuple)) + elog(ERROR, "cache lookup failed for type %u", type_oid); + + typeform = (Form_pg_type) GETSTRUCT(tuple); + + /* + * Check if it's a regular (variable length) array type. As above, + * fixed-length array types such as "name" shouldn't get deconstructed. + */ + array_base_type = typeform->typelem; + + *typarray = (IsTrueArrayType(typeform) && typeform->typstorage != TYPSTORAGE_PLAIN); + + if (*typarray) + { + /* Switch our attention to the array element type */ + ReleaseSysCache(tuple); + tuple = SearchSysCache1(TYPEOID, ObjectIdGetDatum(array_base_type)); + if (!HeapTupleIsValid(tuple)) + elog(ERROR, "cache lookup failed for type %u", type_oid); + + typeform = (Form_pg_type) GETSTRUCT(tuple); + type_oid = array_base_type; + } + + /* + * Special-case crock for types with strange typmod rules where we put + * typmod at the middle of name(e.g. TIME(6) with time zone ). We cannot + * schema-qualify nor add quotes to the type name in these cases. + */ + if (type_oid == INTERVALOID || + type_oid == TIMESTAMPOID || + type_oid == TIMESTAMPTZOID || + type_oid == TIMEOID || + type_oid == TIMETZOID) + { + switch (type_oid) + { + case INTERVALOID: + *typname = pstrdup("INTERVAL"); + break; + case TIMESTAMPTZOID: + if (typemod < 0) + *typname = pstrdup("TIMESTAMP WITH TIME ZONE"); + else + /* otherwise, WITH TZ is added by typmod. */ + *typname = pstrdup("TIMESTAMP"); + break; + case TIMESTAMPOID: + *typname = pstrdup("TIMESTAMP"); + break; + case TIMETZOID: + if (typemod < 0) + *typname = pstrdup("TIME WITH TIME ZONE"); + else + /* otherwise, WITH TZ is added by typmod. */ + *typname = pstrdup("TIME"); + break; + case TIMEOID: + *typname = pstrdup("TIME"); + break; + } + *nspid = InvalidOid; + } + else + { + /* + * No additional processing is required for other types, so get the + * type name and schema directly from the catalog. + */ + *nspid = typeform->typnamespace; + *typname = pstrdup(NameStr(typeform->typname)); + } + + if (typemod >= 0) + *typemodstr = printTypmod("", typemod, typeform->typmodout); + else + *typemodstr = pstrdup(""); + + ReleaseSysCache(tuple); +} + +/* + * Return the defaults values of arguments to a function, as a list of + * deparsed expressions. + */ +static List * +FunctionGetDefaults(text *proargdefaults) +{ + List *nodedefs; + List *strdefs = NIL; + ListCell *cell; + + nodedefs = (List *) stringToNode(text_to_cstring(proargdefaults)); + if (!IsA(nodedefs, List)) + elog(ERROR, "proargdefaults is not a list"); + + foreach(cell, nodedefs) + { + Node *onedef = lfirst(cell); + + strdefs = lappend(strdefs, deparse_expression(onedef, NIL, false, false)); + } + + return strdefs; +} + +/* + * Return the string representation of the given RELPERSISTENCE value. + */ +static char * +get_persistence_str(char persistence) +{ + switch (persistence) + { + case RELPERSISTENCE_TEMP: + return "TEMPORARY"; + case RELPERSISTENCE_UNLOGGED: + return "UNLOGGED"; + case RELPERSISTENCE_PERMANENT: + return ""; + default: + elog(ERROR, "unexpected persistence marking %c", persistence); + return ""; /* make compiler happy */ + } +} + +/* Allocate a new parameter */ +static ObjElem * +new_object(ObjType type, char *name) +{ + ObjElem *param; + + param = palloc0(sizeof(ObjElem)); + param->name = name; + param->objtype = type; + + return param; +} + +/* Allocate a new object parameter */ +static ObjElem * +new_object_object(ObjTree *value) +{ + ObjElem *param; + + param = new_object(ObjTypeObject, NULL); + param->value.object = value; + + return param; +} + +/* + * Allocate a new object tree to store parameter values. + */ +static ObjTree * +new_objtree(char *fmt) +{ + ObjTree *params; + + params = palloc0(sizeof(ObjTree)); + params->present = true; + slist_init(¶ms->params); + + if (fmt) + { + params->fmtinfo = makeStringInfo(); + appendStringInfoString(params->fmtinfo, fmt); + } + + return params; +} + +/* + * A helper routine to set up %{}D and %{}O elements. + * + * Elements "schemaname" and "objname" are set. If the namespace OID + * corresponds to a temp schema, that's set to "pg_temp". + * + * The difference between those two element types is whether the objname will + * be quoted as an identifier or not, which is not something that this routine + * concerns itself with; that will be up to the expand function. + */ +static ObjTree * +new_objtree_for_qualname(Oid nspid, char *name) +{ + ObjTree *qualified; + char *namespace; + + if (isAnyTempNamespace(nspid)) + namespace = pstrdup("pg_temp"); + else + namespace = get_namespace_name(nspid); + + qualified = new_objtree_VA(NULL, 2, + "schemaname", ObjTypeString, namespace, + "objname", ObjTypeString, pstrdup(name)); + + return qualified; +} + +/* + * A helper routine to set up %{}D and %{}O elements, with the object specified + * by classId/objId. + * + */ +static ObjTree * +new_objtree_for_qualname_id(Oid classId, Oid objectId) +{ + ObjTree *qualified; + Relation catalog; + HeapTuple catobj; + Datum objnsp; + Datum objname; + AttrNumber Anum_name; + AttrNumber Anum_namespace; + AttrNumber Anum_oid = get_object_attnum_oid(classId); + bool isnull; + + catalog = table_open(classId, AccessShareLock); + + catobj = get_catalog_object_by_oid(catalog, Anum_oid, objectId); + if (!catobj) + elog(ERROR, "cache lookup failed for object %u of catalog \"%s\"", + objectId, RelationGetRelationName(catalog)); + Anum_name = get_object_attnum_name(classId); + Anum_namespace = get_object_attnum_namespace(classId); + + objnsp = heap_getattr(catobj, Anum_namespace, RelationGetDescr(catalog), + &isnull); + if (isnull) + elog(ERROR, "unexpected NULL namespace"); + + objname = heap_getattr(catobj, Anum_name, RelationGetDescr(catalog), + &isnull); + if (isnull) + elog(ERROR, "unexpected NULL name"); + + qualified = new_objtree_for_qualname(DatumGetObjectId(objnsp), + NameStr(*DatumGetName(objname))); + table_close(catalog, AccessShareLock); + + return qualified; +} + +/* + * Helper routine for %{}R objects, with role specified by RoleSpec node. + * Special values such as ROLESPEC_CURRENT_USER are expanded to their final + * names. + */ +static ObjTree * +new_objtree_for_rolespec(RoleSpec *spec) +{ + ObjTree *role; + char *roletype; + + if (spec->roletype != ROLESPEC_PUBLIC) + roletype = get_rolespec_name(spec); + else + roletype = pstrdup(""); + + role = new_objtree_VA(NULL, 2, + "is_public", ObjTypeBool, spec->roletype == ROLESPEC_PUBLIC, + "rolename", ObjTypeString, roletype); + return role; +} + +/* + * Helper routine for %{}R objects, with role specified by OID. (ACL_ID_PUBLIC + * means to use "public"). + */ +static ObjTree * +new_objtree_for_role_id(Oid roleoid) +{ + ObjTree *role; + + role = new_objtree(""); + + if (roleoid != ACL_ID_PUBLIC) + { + HeapTuple roltup; + char *rolename; + + roltup = SearchSysCache1(AUTHOID, ObjectIdGetDatum(roleoid)); + if (!HeapTupleIsValid(roltup)) + ereport(ERROR, + (errcode(ERRCODE_UNDEFINED_OBJECT), + errmsg("role with OID %u does not exist", roleoid))); + + rolename = NameStr(((Form_pg_authid) GETSTRUCT(roltup))->rolname); + append_string_object(role, "%{rolename}I", pstrdup(rolename)); + + ReleaseSysCache(roltup); + } + else + append_string_object(role, "%{rolename}I", "public"); + + return role; +} + +/* + * A helper routine to setup %{}T elements. + */ +static ObjTree * +new_objtree_for_type(Oid typeId, int32 typmod) +{ + ObjTree *typeParam; + Oid typnspid; + char *typnsp; + char *typename = NULL; + char *typmodstr; + bool typarray; + + format_type_detailed(typeId, typmod, + &typnspid, &typename, &typmodstr, &typarray); + + if (OidIsValid(typnspid)) + typnsp = get_namespace_name_or_temp(typnspid); + else + typnsp = pstrdup(""); + + typeParam = new_objtree_VA(NULL, 4, + "schemaname", ObjTypeString, typnsp, + "typename", ObjTypeString, typename, + "typmod", ObjTypeString, typmodstr, + "typarray", ObjTypeBool, typarray); + + return typeParam; +} + +/* + * Allocate a new object tree to store parameter values -- varargs version. + * + * The "fmt" argument is used to append as a "fmt" element in the output blob. + * numobjs indicates the number of extra elements to append; for each one, a + * name (string), type (from the ObjType enum) and value must be supplied. The + * value must match the type given; for instance, ObjTypeInteger requires an + * int64, ObjTypeString requires a char *, ObjTypeArray requires a list (of + * ObjElem), ObjTypeObject requires an ObjTree, and so on. Each element type * + * must match the conversion specifier given in the format string, as described + * in ddl_deparse_expand_command, q.v. + * + * Note we don't have the luxury of sprintf-like compiler warnings for + * malformed argument lists. + */ +static ObjTree * +new_objtree_VA(char *fmt, int numobjs,...) +{ + ObjTree *tree; + va_list args; + int i; + + /* Set up the toplevel object and its "fmt" */ + tree = new_objtree(fmt); + + /* And process the given varargs */ + va_start(args, numobjs); + for (i = 0; i < numobjs; i++) + { + char *name; + ObjType type; + ObjElem *elem; + + name = va_arg(args, char *); + type = va_arg(args, ObjType); + elem = new_object(type, NULL); + + /* + * For all other param types there must be a value in the varargs. + * Fetch it and add the fully formed subobject into the main object. + */ + switch (type) + { + case ObjTypeNull: + /* Null params don't have a value (obviously) */ + break; + case ObjTypeBool: + elem->value.boolean = va_arg(args, int); + break; + case ObjTypeString: + elem->value.string = va_arg(args, char *); + break; + case ObjTypeArray: + elem->value.array = va_arg(args, List *); + break; + case ObjTypeInteger: + elem->value.integer = va_arg(args, int64); + break; + case ObjTypeFloat: + elem->value.flt = va_arg(args, double); + break; + case ObjTypeObject: + elem->value.object = va_arg(args, ObjTree *); + break; + default: + elog(ERROR, "invalid ObjTree element type %d", type); + } + + elem->name = name; + append_premade_object(tree, elem); + } + + va_end(args); + return tree; +} + +/* Allocate a new string object */ +static ObjElem * +new_string_object(char *value) +{ + ObjElem *param; + + Assert(value); + + param = new_object(ObjTypeString, NULL); + param->value.string = value; + + return param; +} + +/* + * Process the pre-built format string from the ObjTree into the output parse + * state. + */ +static void +objtree_fmt_to_jsonb_element(JsonbParseState *state, ObjTree *tree) +{ + JsonbValue key; + JsonbValue val; + + if (tree->fmtinfo == NULL) + return; + + /* Push the key first */ + key.type = jbvString; + key.val.string.val = "fmt"; + key.val.string.len = strlen(key.val.string.val); + pushJsonbValue(&state, WJB_KEY, &key); + + /* Then process the pre-built format string */ + val.type = jbvString; + val.val.string.len = tree->fmtinfo->len; + val.val.string.val = tree->fmtinfo->data; + pushJsonbValue(&state, WJB_VALUE, &val); +} + +/* + * Create a JSONB representation from an ObjTree. + */ +static Jsonb * +objtree_to_jsonb(ObjTree *tree) +{ + JsonbValue *value; + + value = objtree_to_jsonb_rec(tree, NULL); + return JsonbValueToJsonb(value); +} + +/* + * Helper for objtree_to_jsonb: process an individual element from an object or + * an array into the output parse state. + */ +static void +objtree_to_jsonb_element(JsonbParseState *state, ObjElem *object, + JsonbIteratorToken elem_token) +{ + ListCell *cell; + JsonbValue val; + + switch (object->objtype) + { + case ObjTypeNull: + val.type = jbvNull; + pushJsonbValue(&state, elem_token, &val); + break; + + case ObjTypeString: + val.type = jbvString; + val.val.string.len = strlen(object->value.string); + val.val.string.val = object->value.string; + pushJsonbValue(&state, elem_token, &val); + break; + + case ObjTypeInteger: + val.type = jbvNumeric; + val.val.numeric = (Numeric) + DatumGetNumeric(DirectFunctionCall1(int8_numeric, + object->value.integer)); + pushJsonbValue(&state, elem_token, &val); + break; + + case ObjTypeFloat: + val.type = jbvNumeric; + val.val.numeric = (Numeric) + DatumGetNumeric(DirectFunctionCall1(float8_numeric, + object->value.integer)); + pushJsonbValue(&state, elem_token, &val); + break; + + case ObjTypeBool: + val.type = jbvBool; + val.val.boolean = object->value.boolean; + pushJsonbValue(&state, elem_token, &val); + break; + + case ObjTypeObject: + /* Recursively add the object into the existing parse state */ + objtree_to_jsonb_rec(object->value.object, state); + break; + + case ObjTypeArray: + pushJsonbValue(&state, WJB_BEGIN_ARRAY, NULL); + foreach(cell, object->value.array) + { + ObjElem *elem = lfirst(cell); + + objtree_to_jsonb_element(state, elem, WJB_ELEM); + } + pushJsonbValue(&state, WJB_END_ARRAY, NULL); + break; + + default: + elog(ERROR, "unrecognized object type %d", object->objtype); + break; + } +} + +/* + * Recursive helper for objtree_to_jsonb. + */ +static JsonbValue * +objtree_to_jsonb_rec(ObjTree *tree, JsonbParseState *state) +{ + slist_iter iter; + + pushJsonbValue(&state, WJB_BEGIN_OBJECT, NULL); + + objtree_fmt_to_jsonb_element(state, tree); + + slist_foreach(iter, &tree->params) + { + ObjElem *object = slist_container(ObjElem, node, iter.cur); + JsonbValue key; + + /* Push the key first */ + key.type = jbvString; + key.val.string.len = strlen(object->name); + key.val.string.val = object->name; + pushJsonbValue(&state, WJB_KEY, &key); + + /* Then process the value according to its type */ + objtree_to_jsonb_element(state, object, WJB_VALUE); + } + + return pushJsonbValue(&state, WJB_END_OBJECT, NULL); +} + +/* + * Subroutine for CREATE TABLE/CREATE DOMAIN deparsing. + * + * Given a table OID or domain OID, obtain its constraints and append them to + * the given elements list. The updated list is returned. + * + * This works for typed tables, regular tables, and domains. + * + * Note that CONSTRAINT_FOREIGN constraints are always ignored. + */ +static List * +obtainConstraints(List *elements, Oid relationId, Oid domainId) +{ + Relation conRel; + ScanKeyData key; + SysScanDesc scan; + HeapTuple tuple; + ObjTree *constr; + + /* Only one may be valid */ + Assert(OidIsValid(relationId) ^ OidIsValid(domainId)); + + /* + * Scan pg_constraint to fetch all constraints linked to the given + * relation. + */ + conRel = table_open(ConstraintRelationId, AccessShareLock); + if (OidIsValid(relationId)) + { + ScanKeyInit(&key, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(relationId)); + scan = systable_beginscan(conRel, ConstraintRelidTypidNameIndexId, + true, NULL, 1, &key); + } + else + { + Assert(OidIsValid(domainId)); + ScanKeyInit(&key, + Anum_pg_constraint_contypid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(domainId)); + scan = systable_beginscan(conRel, ConstraintTypidIndexId, + true, NULL, 1, &key); + } + + /* + * For each constraint, add a node to the list of table elements. In + * these nodes we include not only the printable information ("fmt"), but + * also separate attributes to indicate the type of constraint, for + * automatic processing. + */ + while (HeapTupleIsValid(tuple = systable_getnext(scan))) + { + Form_pg_constraint constrForm; + char *contype; + + constrForm = (Form_pg_constraint) GETSTRUCT(tuple); + + switch (constrForm->contype) + { + case CONSTRAINT_CHECK: + contype = "check"; + break; + case CONSTRAINT_FOREIGN: + continue; /* not here */ + case CONSTRAINT_PRIMARY: + contype = "primary key"; + break; + case CONSTRAINT_UNIQUE: + contype = "unique"; + break; + case CONSTRAINT_TRIGGER: + contype = "trigger"; + break; + case CONSTRAINT_EXCLUSION: + contype = "exclusion"; + break; + default: + elog(ERROR, "unrecognized constraint type"); + } + + /* + * "type" and "contype" are not part of the printable output, but are + * useful to programmatically distinguish these from columns and among + * different constraint types. + * + * XXX it might be useful to also list the column names in a PK, etc. + */ + constr = new_objtree_VA("CONSTRAINT %{name}I %{definition}s", + 4, + "type", ObjTypeString, "constraint", + "contype", ObjTypeString, contype, + "name", ObjTypeString, NameStr(constrForm->conname), + "definition", ObjTypeString, + pg_get_constraintdef_command_simple(constrForm->oid)); + elements = lappend(elements, new_object_object(constr)); + } + + systable_endscan(scan); + table_close(conRel, AccessShareLock); + + return elements; +} + +/* + * Return an index definition, split into several pieces. + * + * A large amount of code is duplicated from pg_get_indexdef_worker, but + * control flow is different enough that it doesn't seem worth keeping them + * together. + */ +static void +pg_get_indexdef_detailed(Oid indexrelid, + char **index_am, + char **definition, + char **reloptions, + char **tablespace, + char **whereClause) +{ + HeapTuple ht_idx; + HeapTuple ht_idxrel; + HeapTuple ht_am; + Form_pg_index idxrec; + Form_pg_class idxrelrec; + Form_pg_am amrec; + IndexAmRoutine *amroutine; + List *indexprs; + ListCell *indexpr_item; + List *context; + Oid indrelid; + int keyno; + Datum indcollDatum; + Datum indclassDatum; + Datum indoptionDatum; + bool isnull; + oidvector *indcollation; + oidvector *indclass; + int2vector *indoption; + StringInfoData definitionBuf; + + /* + * Fetch the pg_index tuple by the Oid of the index + */ + ht_idx = SearchSysCache1(INDEXRELID, ObjectIdGetDatum(indexrelid)); + if (!HeapTupleIsValid(ht_idx)) + elog(ERROR, "cache lookup failed for index %u", indexrelid); + idxrec = (Form_pg_index) GETSTRUCT(ht_idx); + + indrelid = idxrec->indrelid; + Assert(indexrelid == idxrec->indexrelid); + + /* Must get indcollation, indclass, and indoption the hard way */ + indcollDatum = SysCacheGetAttr(INDEXRELID, ht_idx, + Anum_pg_index_indcollation, &isnull); + Assert(!isnull); + indcollation = (oidvector *) DatumGetPointer(indcollDatum); + + indclassDatum = SysCacheGetAttr(INDEXRELID, ht_idx, + Anum_pg_index_indclass, &isnull); + Assert(!isnull); + indclass = (oidvector *) DatumGetPointer(indclassDatum); + + indoptionDatum = SysCacheGetAttr(INDEXRELID, ht_idx, + Anum_pg_index_indoption, &isnull); + Assert(!isnull); + indoption = (int2vector *) DatumGetPointer(indoptionDatum); + + /* + * Fetch the pg_class tuple of the index relation + */ + ht_idxrel = SearchSysCache1(RELOID, ObjectIdGetDatum(indexrelid)); + if (!HeapTupleIsValid(ht_idxrel)) + elog(ERROR, "cache lookup failed for relation %u", indexrelid); + idxrelrec = (Form_pg_class) GETSTRUCT(ht_idxrel); + + /* + * Fetch the pg_am tuple of the index' access method + */ + ht_am = SearchSysCache1(AMOID, ObjectIdGetDatum(idxrelrec->relam)); + if (!HeapTupleIsValid(ht_am)) + elog(ERROR, "cache lookup failed for access method %u", + idxrelrec->relam); + amrec = (Form_pg_am) GETSTRUCT(ht_am); + + /* + * Get the index expressions, if any. (NOTE: we do not use the relcache + * versions of the expressions and predicate, because we want to display + * non-const-folded expressions.) + */ + if (!heap_attisnull(ht_idx, Anum_pg_index_indexprs, NULL)) + { + Datum exprsDatum; + char *exprsString; + + exprsDatum = SysCacheGetAttr(INDEXRELID, ht_idx, + Anum_pg_index_indexprs, &isnull); + Assert(!isnull); + exprsString = TextDatumGetCString(exprsDatum); + indexprs = (List *) stringToNode(exprsString); + pfree(exprsString); + } + else + indexprs = NIL; + + indexpr_item = list_head(indexprs); + + context = deparse_context_for(get_rel_name(indrelid), indrelid); + + initStringInfo(&definitionBuf); + + /* Output index AM */ + *index_am = pstrdup(quote_identifier(NameStr(amrec->amname))); + + /* Fetch the index AM's API struct */ + amroutine = GetIndexAmRoutine(amrec->amhandler); + + /* + * Output index definition. Note the outer parens must be supplied by + * caller. + */ + for (keyno = 0; keyno < idxrec->indnatts; keyno++) + { + AttrNumber attnum = idxrec->indkey.values[keyno]; + int16 opt = indoption->values[keyno]; + Oid keycoltype; + Oid keycolcollation; + Oid indcoll; + + appendStringInfoString(&definitionBuf, keyno == 0 ? "" : ", "); + + if (attnum != 0) + { + /* Simple index column */ + char *attname; + int32 keycoltypmod; + + attname = get_attname(indrelid, attnum, false); + appendStringInfoString(&definitionBuf, quote_identifier(attname)); + get_atttypetypmodcoll(indrelid, attnum, + &keycoltype, &keycoltypmod, + &keycolcollation); + } + else + { + /* Expressional index */ + Node *indexkey; + char *str; + + if (indexpr_item == NULL) + elog(ERROR, "too few entries in indexprs list"); + indexkey = (Node *) lfirst(indexpr_item); + indexpr_item = lnext(indexprs, indexpr_item); + /* Deparse */ + str = deparse_expression(indexkey, context, false, false); + + /* Need parens if it's not a bare function call */ + if (indexkey && IsA(indexkey, FuncExpr) && + ((FuncExpr *) indexkey)->funcformat == COERCE_EXPLICIT_CALL) + appendStringInfoString(&definitionBuf, str); + else + appendStringInfo(&definitionBuf, "(%s)", str); + + keycoltype = exprType(indexkey); + keycolcollation = exprCollation(indexkey); + } + + /* Add collation, even if default */ + indcoll = indcollation->values[keyno]; + if (OidIsValid(indcoll)) + appendStringInfo(&definitionBuf, " COLLATE %s", + generate_collation_name((indcoll))); + + /* Add the operator class name, even if default */ + get_opclass_name(indclass->values[keyno], InvalidOid, &definitionBuf); + + /* Add options if relevant */ + if (amroutine->amcanorder) + { + /* If it supports sort ordering, report DESC and NULLS opts */ + if (opt & INDOPTION_DESC) + { + appendStringInfoString(&definitionBuf, " DESC"); + /* NULLS FIRST is the default in this case */ + if (!(opt & INDOPTION_NULLS_FIRST)) + appendStringInfoString(&definitionBuf, " NULLS LAST"); + } + else + { + if (opt & INDOPTION_NULLS_FIRST) + appendStringInfoString(&definitionBuf, " NULLS FIRST"); + } + } + + /* XXX excludeOps thingy was here; do we need anything? */ + } + *definition = definitionBuf.data; + + /* Output reloptions */ + *reloptions = flatten_reloptions(indexrelid); + + /* Output tablespace */ + { + Oid tblspc; + + tblspc = get_rel_tablespace(indexrelid); + if (OidIsValid(tblspc)) + *tablespace = pstrdup(quote_identifier(get_tablespace_name(tblspc))); + else + *tablespace = NULL; + } + + /* Report index predicate, if any */ + if (!heap_attisnull(ht_idx, Anum_pg_index_indpred, NULL)) + { + Node *node; + Datum predDatum; + char *predString; + + /* Convert text string to node tree */ + predDatum = SysCacheGetAttr(INDEXRELID, ht_idx, + Anum_pg_index_indpred, &isnull); + Assert(!isnull); + predString = TextDatumGetCString(predDatum); + node = (Node *) stringToNode(predString); + pfree(predString); + + /* Deparse */ + *whereClause = + deparse_expression(node, context, false, false); + } + else + *whereClause = NULL; + + /* Clean up */ + ReleaseSysCache(ht_idx); + ReleaseSysCache(ht_idxrel); + ReleaseSysCache(ht_am); +} + +/* + * Obtain the deparsed default value for the given column of the given table. + * + * Caller must have set a correct deparse context. + */ +static char * +RelationGetColumnDefault(Relation rel, AttrNumber attno, List *dpcontext, + List **exprs) +{ + Node *defval; + char *defstr; + + defval = build_column_default(rel, attno); + defstr = deparse_expression(defval, dpcontext, false, false); + + /* Collect the expression for later replication safety checks */ + if (exprs) + *exprs = lappend(*exprs, defval); + + return defstr; +} + +/* + * Obtain the deparsed partition bound expression for the given table. + */ +static char * +RelationGetPartitionBound(Oid relid) +{ + Datum deparsed; + Datum boundDatum; + bool isnull; + HeapTuple tuple; + + tuple = SearchSysCache1(RELOID, relid); + if (!HeapTupleIsValid(tuple)) + elog(ERROR, "cache lookup failed for relation %u", + relid); + + boundDatum = SysCacheGetAttr(RELOID, tuple, + Anum_pg_class_relpartbound, + &isnull); + + deparsed = DirectFunctionCall2(pg_get_expr, + CStringGetTextDatum(TextDatumGetCString(boundDatum)), + relid); + + ReleaseSysCache(tuple); + + return TextDatumGetCString(deparsed); +} + +/* + * Return the given object type as a string. + */ +static const char * +stringify_objtype(ObjectType objtype) +{ + switch (objtype) + { + case OBJECT_AGGREGATE: + return "AGGREGATE"; + case OBJECT_CAST: + return "CAST"; + case OBJECT_COLUMN: + return "COLUMN"; + case OBJECT_COLLATION: + return "COLLATION"; + case OBJECT_CONVERSION: + return "CONVERSION"; + case OBJECT_DATABASE: + return "DATABASE"; + case OBJECT_DOMAIN: + return "DOMAIN"; + case OBJECT_EVENT_TRIGGER: + return "EVENT TRIGGER"; + case OBJECT_EXTENSION: + return "EXTENSION"; + case OBJECT_FDW: + return "FOREIGN DATA WRAPPER"; + case OBJECT_FOREIGN_SERVER: + return "SERVER"; + case OBJECT_FOREIGN_TABLE: + return "FOREIGN TABLE"; + case OBJECT_FUNCTION: + return "FUNCTION"; + case OBJECT_INDEX: + return "INDEX"; + case OBJECT_LANGUAGE: + return "LANGUAGE"; + case OBJECT_LARGEOBJECT: + return "LARGE OBJECT"; + case OBJECT_MATVIEW: + return "MATERIALIZED VIEW"; + case OBJECT_OPCLASS: + return "OPERATOR CLASS"; + case OBJECT_OPERATOR: + return "OPERATOR"; + case OBJECT_OPFAMILY: + return "OPERATOR FAMILY"; + case OBJECT_POLICY: + return "POLICY"; + case OBJECT_ROLE: + return "ROLE"; + case OBJECT_RULE: + return "RULE"; + case OBJECT_SCHEMA: + return "SCHEMA"; + case OBJECT_SEQUENCE: + return "SEQUENCE"; + case OBJECT_STATISTIC_EXT: + return "STATISTICS"; + case OBJECT_TABLE: + return "TABLE"; + case OBJECT_TABLESPACE: + return "TABLESPACE"; + case OBJECT_TRIGGER: + return "TRIGGER"; + case OBJECT_TSCONFIGURATION: + return "TEXT SEARCH CONFIGURATION"; + + /* + * case OBJECT_TSCONFIG_MAPPING: + * return "TEXT SEARCH CONFIGURATION MAPPING"; + */ + case OBJECT_TSDICTIONARY: + return "TEXT SEARCH DICTIONARY"; + case OBJECT_TSPARSER: + return "TEXT SEARCH PARSER"; + case OBJECT_TSTEMPLATE: + return "TEXT SEARCH TEMPLATE"; + case OBJECT_TYPE: + return "TYPE"; + case OBJECT_USER_MAPPING: + return "USER MAPPING"; + case OBJECT_VIEW: + return "VIEW"; + + default: + elog(ERROR, "unsupported object type %d", objtype); + } +} + +/* + * Given a CollectedCommand, return a JSON representation of it. + * + * The command is expanded fully so that there are no ambiguities even in the + * face of search_path changes. + */ +Datum +ddl_deparse_to_json(PG_FUNCTION_ARGS) +{ + CollectedCommand *cmd = (CollectedCommand *) PG_GETARG_POINTER(0); + char *command; + + command = deparse_utility_command(cmd, true); + + if (command) + PG_RETURN_TEXT_P(cstring_to_text(command)); + + PG_RETURN_NULL(); +} + +/* + * Deparse an AlterCollationStmt (ALTER COLLATION) + * + * Given a collation OID and the parse tree that created it, return the JSON + * blob representing the alter command. + */ +static ObjTree * +deparse_AlterCollation(Oid objectId, Node *parsetree) +{ + ObjTree *stmt; + HeapTuple colTup; + Form_pg_collation colForm; + + colTup = SearchSysCache1(COLLOID, ObjectIdGetDatum(objectId)); + if (!HeapTupleIsValid(colTup)) + elog(ERROR, "cache lookup failed for collation with OID %u", objectId); + colForm = (Form_pg_collation) GETSTRUCT(colTup); + + stmt = new_objtree_VA("ALTER COLLATION %{identity}O REFRESH VERSION", 1, + "identity", ObjTypeObject, + new_objtree_for_qualname(colForm->collnamespace, + NameStr(colForm->collname))); + + ReleaseSysCache(colTup); + + return stmt; +} + +/* + * Deparse an AlterFunctionStmt (ALTER FUNCTION) + * + * Given a function OID and the parse tree that created it, return the JSON + * blob representing the alter command. + */ +static ObjTree * +deparse_AlterFunction(Oid objectId, Node *parsetree) +{ + AlterFunctionStmt *node = (AlterFunctionStmt *) parsetree; + ObjTree *alterFunc; + ObjTree *sign; + HeapTuple procTup; + Form_pg_proc procForm; + List *params = NIL; + List *elems = NIL; + ListCell *cell; + int i; + + /* Get the pg_proc tuple */ + procTup = SearchSysCache1(PROCOID, objectId); + if (!HeapTupleIsValid(procTup)) + elog(ERROR, "cache lookup failure for function with OID %u", + objectId); + procForm = (Form_pg_proc) GETSTRUCT(procTup); + + /* + * Verbose syntax + * + * ALTER FUNCTION %{signature}s %{definition: }s + */ + alterFunc = new_objtree_VA("ALTER FUNCTION", 0); + + /* + * ALTER FUNCTION does not change signature so we can use catalog to get + * input type Oids. + */ + for (i = 0; i < procForm->pronargs; i++) + { + ObjTree *tmpobj = new_objtree_VA("%{type}T", 0); + + append_object_object(tmpobj, "type", + new_objtree_for_type(procForm->proargtypes.values[i], -1)); + params = lappend(params, new_object_object(tmpobj)); + } + + sign = new_objtree(""); + + append_object_object(sign, "%{identity}D", + new_objtree_for_qualname_id(ProcedureRelationId, + objectId)); + append_array_object(sign, "(%{arguments:, }s)", params); + + append_object_object(alterFunc, "%{signature}s", sign); + + foreach(cell, node->actions) + { + DefElem *defel = (DefElem *) lfirst(cell); + ObjTree *tmpobj = NULL; + + if (strcmp(defel->defname, "volatility") == 0) + { + tmpobj = new_objtree_VA(strVal(defel->arg), 0); + } + else if (strcmp(defel->defname, "strict") == 0) + { + tmpobj = new_objtree_VA(intVal(defel->arg) ? + "RETURNS NULL ON NULL INPUT" : + "CALLED ON NULL INPUT", 0); + } + else if (strcmp(defel->defname, "security") == 0) + { + tmpobj = new_objtree_VA(intVal(defel->arg) ? + "SECURITY DEFINER" : "SECURITY INVOKER", 0); + } + else if (strcmp(defel->defname, "leakproof") == 0) + { + tmpobj = new_objtree_VA(intVal(defel->arg) ? + "LEAKPROOF" : "NOT LEAKPROOF", 0); + } + else if (strcmp(defel->defname, "cost") == 0) + { + tmpobj = new_objtree_VA("COST %{cost}n", 1, + "cost", ObjTypeFloat, + defGetNumeric(defel)); + } + else if (strcmp(defel->defname, "rows") == 0) + { + tmpobj = new_objtree_VA("ROWS", 0); + if (defGetNumeric(defel) == 0) + append_bool_object(tmpobj, "present", false); + else + append_float_object(tmpobj, "%{rows}n", + defGetNumeric(defel)); + } + else if (strcmp(defel->defname, "set") == 0) + { + VariableSetStmt *sstmt = (VariableSetStmt *) defel->arg; + char *value = ExtractSetVariableArgs(sstmt); + + tmpobj = deparse_FunctionSet(sstmt->kind, sstmt->name, value); + } + else if (strcmp(defel->defname, "support") == 0) + { + Oid argtypes[1]; + + tmpobj = new_objtree("SUPPORT"); + + Assert(procForm->prosupport); + + /* + * We should qualify the support function's name if it wouldn't be + * resolved by lookup in the current search path. + */ + argtypes[0] = INTERNALOID; + append_string_object(tmpobj, "%{name}s", + generate_function_name(procForm->prosupport, 1, + NIL, argtypes, + false, NULL, + EXPR_KIND_NONE)); + } + else if (strcmp(defel->defname, "parallel") == 0) + { + char *fmt = psprintf("PARALLEL %s", strVal(defel->arg)); + + tmpobj = new_objtree(fmt); + } + + elems = lappend(elems, new_object_object(tmpobj)); + } + + append_array_object(alterFunc, "%{definition: }s", elems); + + ReleaseSysCache(procTup); + + return alterFunc; +} + +/* + * Deparse an AlterObjectSchemaStmt (ALTER ... SET SCHEMA command) + * + * Given the object address and the parse tree that created it, return the JSON + * blob representing the alter command. + */ +static ObjTree * +deparse_AlterObjectSchemaStmt(ObjectAddress address, Node *parsetree, + ObjectAddress oldschema) +{ + AlterObjectSchemaStmt *node = (AlterObjectSchemaStmt *) parsetree; + ObjTree *alterStmt; + char *fmt; + char *identity; + char *newschema; + char *oldschname; + char *ident; + + newschema = node->newschema; + + /* + * Verbose syntax + * + * ALTER %s %{identity}s SET SCHEMA %{newschema}I + */ + fmt = psprintf("ALTER %s", stringify_objtype(node->objectType)); + alterStmt = new_objtree(fmt); + + /* + * Since the command has already taken place from the point of view of + * catalogs, getObjectIdentity returns the object name with the already + * changed schema. The output of our deparsing must return the original + * schema name, however, so we chop the schema name off the identity + * string and then prepend the quoted schema name. + * + * XXX This is pretty clunky. Can we do better? + */ + identity = getObjectIdentity(&address, false); + oldschname = get_namespace_name(oldschema.objectId); + if (!oldschname) + elog(ERROR, "cache lookup failed for schema with OID %u", + oldschema.objectId); + + ident = psprintf("%s%s", quote_identifier(oldschname), + identity + strlen(quote_identifier(newschema))); + append_string_object(alterStmt, "%{identity}s", ident); + + append_string_object(alterStmt, "SET SCHEMA %{newschema}I", newschema); + + return alterStmt; +} + +/* + * Deparse a GRANT/REVOKE command. + * + */ +static ObjTree * +deparse_GrantStmt(CollectedCommand *cmd) +{ + InternalGrant *istmt; + ObjTree *grantStmt; + char *fmt; + char *objtype; + List *list; + ListCell *cell; + Oid classId; + ObjTree *tmp; + + istmt = cmd->d.grant.istmt; + + /* + * If there are no objects from "ALL ... IN SCHEMA" to be granted, then we + * need not do anything. + */ + if (istmt->objects == NIL) + return NULL; + + switch (istmt->objtype) + { + case OBJECT_COLUMN: + case OBJECT_TABLE: + objtype = "TABLE"; + classId = RelationRelationId; + break; + case OBJECT_SEQUENCE: + objtype = "SEQUENCE"; + classId = RelationRelationId; + break; + case OBJECT_DOMAIN: + objtype = "DOMAIN"; + classId = TypeRelationId; + break; + case OBJECT_FDW: + objtype = "FOREIGN DATA WRAPPER"; + classId = ForeignDataWrapperRelationId; + break; + case OBJECT_FOREIGN_SERVER: + objtype = "FOREIGN SERVER"; + classId = ForeignServerRelationId; + break; + case OBJECT_FUNCTION: + objtype = "FUNCTION"; + classId = ProcedureRelationId; + break; + case OBJECT_PROCEDURE: + objtype = "PROCEDURE"; + classId = ProcedureRelationId; + break; + case OBJECT_ROUTINE: + objtype = "ROUTINE"; + classId = ProcedureRelationId; + break; + case OBJECT_LANGUAGE: + objtype = "LANGUAGE"; + classId = LanguageRelationId; + break; + case OBJECT_LARGEOBJECT: + objtype = "LARGE OBJECT"; + classId = LargeObjectRelationId; + break; + case OBJECT_SCHEMA: + objtype = "SCHEMA"; + classId = NamespaceRelationId; + break; + case OBJECT_TYPE: + objtype = "TYPE"; + classId = TypeRelationId; + break; + case OBJECT_DATABASE: + case OBJECT_TABLESPACE: + objtype = ""; + classId = InvalidOid; + elog(ERROR, "global objects not supported"); + break; + default: + elog(ERROR, "invalid OBJECT value %d", istmt->objtype); + } + + /* GRANT TO or REVOKE FROM */ + if (istmt->is_grant) + fmt = psprintf("GRANT"); + else + fmt = psprintf("REVOKE"); + + grantStmt = new_objtree_VA(fmt, 0); + + /* build a list of privileges to grant/revoke */ + if (istmt->all_privs) + { + tmp = new_objtree_VA("ALL PRIVILEGES", 0); + list = list_make1(new_object_object(tmp)); + } + else + { + list = NIL; + + if (istmt->privileges & ACL_INSERT) + list = lappend(list, new_string_object("INSERT")); + if (istmt->privileges & ACL_SELECT) + list = lappend(list, new_string_object("SELECT")); + if (istmt->privileges & ACL_UPDATE) + list = lappend(list, new_string_object("UPDATE")); + if (istmt->privileges & ACL_DELETE) + list = lappend(list, new_string_object("DELETE")); + if (istmt->privileges & ACL_TRUNCATE) + list = lappend(list, new_string_object("TRUNCATE")); + if (istmt->privileges & ACL_REFERENCES) + list = lappend(list, new_string_object("REFERENCES")); + if (istmt->privileges & ACL_TRIGGER) + list = lappend(list, new_string_object("TRIGGER")); + if (istmt->privileges & ACL_EXECUTE) + list = lappend(list, new_string_object("EXECUTE")); + if (istmt->privileges & ACL_USAGE) + list = lappend(list, new_string_object("USAGE")); + if (istmt->privileges & ACL_CREATE) + list = lappend(list, new_string_object("CREATE")); + if (istmt->privileges & ACL_CREATE_TEMP) + list = lappend(list, new_string_object("TEMPORARY")); + if (istmt->privileges & ACL_CONNECT) + list = lappend(list, new_string_object("CONNECT")); + + if (!istmt->is_grant && istmt->grant_option) + append_string_object(grantStmt, "%{grant_option}s", + istmt->grant_option ? "GRANT OPTION FOR" : ""); + + if (istmt->col_privs != NIL) + { + ListCell *ocell; + + foreach(ocell, istmt->col_privs) + { + AccessPriv *priv = lfirst(ocell); + List *cols = NIL; + + tmp = new_objtree(""); + foreach(cell, priv->cols) + { + String *colname = lfirst_node(String, cell); + + cols = lappend(cols, + new_string_object(strVal(colname))); + } + append_array_object(tmp, "(%{cols:, }s)", cols); + + if (priv->priv_name == NULL) + append_string_object(grantStmt, "%{priv}s", "ALL PRIVILEGES"); + else + append_string_object(grantStmt, "%{priv}s", priv->priv_name); + + list = lappend(list, new_object_object(tmp)); + } + } + } + append_array_object(grantStmt, "%{privileges:, }s ON", list); + + append_string_object(grantStmt, "%{objtype}s", objtype); + + /* target objects. We use object identities here */ + list = NIL; + foreach(cell, istmt->objects) + { + Oid objid = lfirst_oid(cell); + ObjectAddress addr; + + addr.classId = classId; + addr.objectId = objid; + addr.objectSubId = 0; + + tmp = new_objtree_VA("%{identity}s", 1, + "identity", ObjTypeString, + getObjectIdentity(&addr, false)); + + list = lappend(list, new_object_object(tmp)); + } + append_array_object(grantStmt, "%{privtarget:, }s", list); + + if (istmt->is_grant) + append_format_string(grantStmt, "TO"); + else + append_format_string(grantStmt, "FROM"); + + /* list of grantees */ + list = NIL; + foreach(cell, istmt->grantees) + { + Oid grantee = lfirst_oid(cell); + + tmp = new_objtree_for_role_id(grantee); + list = lappend(list, new_object_object(tmp)); + } + + append_array_object(grantStmt, "%{grantees:, }s", list); + + /* the wording of the grant option is variable ... */ + if (istmt->is_grant) + append_string_object(grantStmt, "%{grant_option}s", + istmt->grant_option ? "WITH GRANT OPTION" : ""); + + if (istmt->grantor_uid) + { + HeapTuple roltup; + char *rolename; + + roltup = SearchSysCache1(AUTHOID, ObjectIdGetDatum(istmt->grantor_uid)); + if (!HeapTupleIsValid(roltup)) + ereport(ERROR, + (errcode(ERRCODE_UNDEFINED_OBJECT), + errmsg("role with OID %u does not exist", istmt->grantor_uid))); + + rolename = NameStr(((Form_pg_authid) GETSTRUCT(roltup))->rolname); + append_string_object(grantStmt, "GRANTED BY %{rolename}s", rolename); + ReleaseSysCache(roltup); + } + + if (!istmt->is_grant) + { + if (istmt->behavior == DROP_CASCADE) + append_string_object(grantStmt, "%{cascade}s", "CASCADE"); + else + append_string_object(grantStmt, "%{cascade}s", ""); + } + + return grantStmt; +} + +/* + * Deparse an AlterOperatorStmt (ALTER OPERATOR ... SET ...). + * + * Given an operator OID and the parse tree that created it, return the JSON + * blob representing the alter command. + */ +static ObjTree * +deparse_AlterOperatorStmt(Oid objectId, Node *parsetree) +{ + HeapTuple oprTup; + AlterOperatorStmt *node = (AlterOperatorStmt *) parsetree; + ObjTree *alterop; + Form_pg_operator oprForm; + ListCell *cell; + List *list = NIL; + + oprTup = SearchSysCache1(OPEROID, ObjectIdGetDatum(objectId)); + if (!HeapTupleIsValid(oprTup)) + elog(ERROR, "cache lookup failed for operator with OID %u", objectId); + oprForm = (Form_pg_operator) GETSTRUCT(oprTup); + + /* + * Verbose syntax + * + * ALTER OPERATOR %{identity}O (%{left_type}T, %{right_type}T) SET + * (%{elems:, }s) + */ + alterop = new_objtree_VA("ALTER OPERATOR %{identity}O", 1, + "identity", ObjTypeObject, + new_objtree_for_qualname(oprForm->oprnamespace, + NameStr(oprForm->oprname))); + + /* LEFTARG */ + if (OidIsValid(oprForm->oprleft)) + append_object_object(alterop, "(%{left_type}T", + new_objtree_for_type(oprForm->oprleft, -1)); + else + append_string_object(alterop, "(%{left_type}s", "NONE"); + + /* RIGHTARG */ + Assert(OidIsValid(oprForm->oprleft)); + append_object_object(alterop, ", %{right_type}T)", + new_objtree_for_type(oprForm->oprright, -1)); + + foreach(cell, node->options) + { + DefElem *elem = (DefElem *) lfirst(cell); + ObjTree *tmpobj = NULL; + + if (strcmp(elem->defname, "restrict") == 0) + { + tmpobj = new_objtree_VA("RESTRICT=", 1, + "clause", ObjTypeString, "restrict"); + if (OidIsValid(oprForm->oprrest)) + append_object_object(tmpobj, "%{procedure}D", + new_objtree_for_qualname_id(ProcedureRelationId, + oprForm->oprrest)); + else + append_string_object(tmpobj, "%{procedure}s", "NONE"); + } + else if (strcmp(elem->defname, "join") == 0) + { + tmpobj = new_objtree_VA("JOIN=", 1, + "clause", ObjTypeString, "join"); + if (OidIsValid(oprForm->oprjoin)) + append_object_object(tmpobj, "%{procedure}D", + new_objtree_for_qualname_id(ProcedureRelationId, + oprForm->oprjoin)); + else + append_string_object(tmpobj, "%{procedure}s", "NONE"); + } + + Assert(tmpobj); + list = lappend(list, new_object_object(tmpobj)); + } + + append_array_object(alterop, "SET (%{elems:, }s)", list); + + ReleaseSysCache(oprTup); + + return alterop; +} + +/* + * Deparse an ALTER OPERATOR FAMILY ADD/DROP command. + * + * Given the CollectedCommand, return the JSON + * blob representing the Alter Op command. + */ +static ObjTree * +deparse_AlterOpFamily(CollectedCommand *cmd) +{ + ObjTree *alterOpFam; + AlterOpFamilyStmt *stmt = (AlterOpFamilyStmt *) cmd->parsetree; + HeapTuple ftp; + Form_pg_opfamily opfForm; + List *list; + ListCell *cell; + + ftp = SearchSysCache1(OPFAMILYOID, + ObjectIdGetDatum(cmd->d.opfam.address.objectId)); + if (!HeapTupleIsValid(ftp)) + elog(ERROR, "cache lookup failed for operator family %u", + cmd->d.opfam.address.objectId); + opfForm = (Form_pg_opfamily) GETSTRUCT(ftp); + + /* + * Verbose syntax + * + * ALTER OPERATOR FAMILY %{identity}D USING %{amname}I ADD/DROP + * %{items:,}s + */ + alterOpFam = new_objtree_VA("ALTER OPERATOR FAMILY %{identity}D " + "USING %{amname}I", 2, + "identity", ObjTypeObject, + new_objtree_for_qualname(opfForm->opfnamespace, + NameStr(opfForm->opfname)), + "amname", ObjTypeString, stmt->amname); + + list = NIL; + foreach(cell, cmd->d.opfam.operators) + { + OpFamilyMember *oper = lfirst(cell); + ObjTree *tmpobj; + + /* + * Verbose syntax + * + * OPERATOR %{num}n %{operator}O(%{ltype}T, %{rtype}T) %{purpose}s + */ + tmpobj = new_objtree_VA("OPERATOR %{num}n", 1, + "num", ObjTypeInteger, oper->number); + + /* Add the operator name; the DROP case doesn't have this */ + if (!stmt->isDrop) + { + append_object_object(tmpobj, "%{operator}O", + new_objtree_for_qualname_id(OperatorRelationId, + oper->object)); + } + + /* Add the types */ + append_object_object(tmpobj, "(%{ltype}T,", + new_objtree_for_type(oper->lefttype, -1)); + append_object_object(tmpobj, "%{rtype}T)", + new_objtree_for_type(oper->righttype, -1)); + + /* Add the FOR SEARCH / FOR ORDER BY clause; not in the DROP case */ + if (!stmt->isDrop) + { + if (oper->sortfamily == InvalidOid) + append_string_object(tmpobj, "%{purpose}s", "FOR SEARCH"); + else + { + ObjTree *tmpobj2; + + tmpobj2 = new_objtree_VA("FOR ORDER BY", 0); + append_object_object(tmpobj2, "%{opfamily}D", + new_objtree_for_qualname_id(OperatorFamilyRelationId, + oper->sortfamily)); + append_object_object(tmpobj, "%{purpose}s", tmpobj2); + } + } + + list = lappend(list, new_object_object(tmpobj)); + } + + foreach(cell, cmd->d.opfam.procedures) + { + OpFamilyMember *proc = lfirst(cell); + ObjTree *tmpobj; + + tmpobj = new_objtree_VA("FUNCTION %{num}n (%{ltype}T, %{rtype}T)", 3, + "num", ObjTypeInteger, proc->number, + "ltype", ObjTypeObject, + new_objtree_for_type(proc->lefttype, -1), + "rtype", ObjTypeObject, + new_objtree_for_type(proc->righttype, -1)); + + /* + * Add the function name and arg types; the DROP case doesn't have + * this + */ + if (!stmt->isDrop) + { + HeapTuple procTup; + Form_pg_proc procForm; + Oid *proargtypes; + List *arglist = NIL; + int i; + + procTup = SearchSysCache1(PROCOID, ObjectIdGetDatum(proc->object)); + if (!HeapTupleIsValid(procTup)) + elog(ERROR, "cache lookup failed for procedure %u", proc->object); + procForm = (Form_pg_proc) GETSTRUCT(procTup); + + proargtypes = procForm->proargtypes.values; + for (i = 0; i < procForm->pronargs; i++) + { + ObjTree *arg; + + arg = new_objtree_for_type(proargtypes[i], -1); + arglist = lappend(arglist, new_object_object(arg)); + } + + append_object_object(tmpobj, "%{function}D", + new_objtree_for_qualname(procForm->pronamespace, + NameStr(procForm->proname))); + + append_format_string(tmpobj, "("); + append_array_object(tmpobj, "%{argtypes:, }T", arglist); + append_format_string(tmpobj, ")"); + + ReleaseSysCache(procTup); + } + + list = lappend(list, new_object_object(tmpobj)); + } + + if (stmt->isDrop) + append_format_string(alterOpFam, "DROP"); + else + append_format_string(alterOpFam, "ADD"); + + append_array_object(alterOpFam, "%{items:, }s", list); + + ReleaseSysCache(ftp); + + return alterOpFam; +} + +/* + * Deparse an AlterOwnerStmt (ALTER ... OWNER TO ...). + * + * Given the object address and the parse tree that created it, return the JSON + * blob representing the alter command. + */ +static ObjTree * +deparse_AlterOwnerStmt(ObjectAddress address, Node *parsetree) +{ + AlterOwnerStmt *node = (AlterOwnerStmt *) parsetree; + ObjTree *ownerStmt; + char *fmt; + + fmt = psprintf("ALTER %s %%{identity}s OWNER TO %%{newowner}I", + stringify_objtype(node->objectType)); + + ownerStmt = new_objtree_VA(fmt, 2, + "identity", ObjTypeString, + getObjectIdentity(&address, false), + "newowner", ObjTypeString, + get_rolespec_name(node->newowner)); + + return ownerStmt; +} + +/* + * Deparse an AlterSeqStmt. + * + * Given a sequence OID and a parse tree that modified it, return an ObjTree + * representing the alter command. + */ +static ObjTree * +deparse_AlterSeqStmt(Oid objectId, Node *parsetree) +{ + ObjTree *alterSeq; + ObjTree *tmpobj; + Relation relation; + Form_pg_sequence_data seqdata; + List *elems = NIL; + ListCell *cell; + Form_pg_sequence seqform; + Relation rel; + HeapTuple seqtuple; + AlterSeqStmt *alterSeqStmt = (AlterSeqStmt *) parsetree; + + /* + * Sequence for IDENTITY COLUMN output separately(via CREATE TABLE or + * ALTER TABLE); return empty here. + */ + if (alterSeqStmt->for_identity) + return NULL; + + seqdata = get_sequence_values(objectId); + + relation = relation_open(objectId, AccessShareLock); + rel = table_open(SequenceRelationId, RowExclusiveLock); + seqtuple = SearchSysCacheCopy1(SEQRELID, + ObjectIdGetDatum(objectId)); + if (!HeapTupleIsValid(seqtuple)) + elog(ERROR, "cache lookup failed for sequence %u", + objectId); + + seqform = (Form_pg_sequence) GETSTRUCT(seqtuple); + + alterSeq = new_objtree("ALTER SEQUENCE"); + + tmpobj = new_objtree_for_qualname(relation->rd_rel->relnamespace, + RelationGetRelationName(relation)); + append_object_object(alterSeq, "%{identity}D", tmpobj); + + foreach(cell, ((AlterSeqStmt *) parsetree)->options) + { + DefElem *elem = (DefElem *) lfirst(cell); + ObjElem *newelm; + + if (strcmp(elem->defname, "cache") == 0) + newelm = deparse_Seq_Cache(alterSeq, seqform, false); + else if (strcmp(elem->defname, "cycle") == 0) + newelm = deparse_Seq_Cycle(alterSeq, seqform, false); + else if (strcmp(elem->defname, "increment") == 0) + newelm = deparse_Seq_IncrementBy(alterSeq, seqform, false); + else if (strcmp(elem->defname, "minvalue") == 0) + newelm = deparse_Seq_Minvalue(alterSeq, seqform, false); + else if (strcmp(elem->defname, "maxvalue") == 0) + newelm = deparse_Seq_Maxvalue(alterSeq, seqform, false); + else if (strcmp(elem->defname, "start") == 0) + newelm = deparse_Seq_Startwith(alterSeq, seqform, false); + else if (strcmp(elem->defname, "restart") == 0) + newelm = deparse_Seq_Restart(alterSeq, seqdata); + else if (strcmp(elem->defname, "owned_by") == 0) + newelm = deparse_Seq_OwnedBy(alterSeq, objectId, false); + else + elog(ERROR, "invalid sequence option %s", elem->defname); + + elems = lappend(elems, newelm); + } + + append_array_object(alterSeq, "%{definition: }s", elems); + + table_close(rel, RowExclusiveLock); + relation_close(relation, AccessShareLock); + + return alterSeq; +} + +/* + * Deparse an AlterTypeStmt. + * + * Given a type OID and a parse tree that modified it, return an ObjTree + * representing the alter type. + */ +static ObjTree * +deparse_AlterTypeSetStmt(Oid objectId, Node *cmd) +{ + AlterTypeStmt *alterTypeSetStmt = (AlterTypeStmt *) cmd; + ObjTree *alterType; + ListCell *pl; + List *elems = NIL; + HeapTuple typTup; + Form_pg_type typForm; + + typTup = SearchSysCache1(TYPEOID, ObjectIdGetDatum(objectId)); + if (!HeapTupleIsValid(typTup)) + elog(ERROR, "cache lookup failed for type with OID %u", objectId); + typForm = (Form_pg_type) GETSTRUCT(typTup); + + alterType = new_objtree("ALTER TYPE"); + append_object_object(alterType, "%{identity}D SET", + new_objtree_for_qualname_id(TypeRelationId, + objectId)); + + foreach(pl, alterTypeSetStmt->options) + { + DefElem *defel = (DefElem *) lfirst(pl); + ObjElem *newelm; + + if (strcmp(defel->defname, "storage") == 0) + newelm = deparse_Type_Storage(alterType, typForm); + if (strcmp(defel->defname, "receive") == 0) + newelm = deparse_Type_Receive(alterType, typForm); + if (strcmp(defel->defname, "send") == 0) + newelm = deparse_Type_Send(alterType, typForm); + if (strcmp(defel->defname, "typmod_in") == 0) + newelm = deparse_Type_Typmod_In(alterType, typForm); + if (strcmp(defel->defname, "typmod_out") == 0) + newelm = deparse_Type_Typmod_Out(alterType, typForm); + if (strcmp(defel->defname, "analyze") == 0) + newelm = deparse_Type_Analyze(alterType, typForm); + if (strcmp(defel->defname, "subscript") == 0) + newelm = deparse_Type_Subscript(alterType, typForm); + else + elog(ERROR, "invalid type option %s", defel->defname); + + elems = lappend(elems, newelm); + } + + append_array_object(alterType, "(%{definition: }s)", elems); + + ReleaseSysCache(typTup); + + return alterType; +} + +/* + * Deparse a CompositeTypeStmt (CREATE TYPE AS) + * + * Given a Composite type OID and the parse tree that created it, return an ObjTree + * representing the creation command. + */ +static ObjTree * +deparse_CompositeTypeStmt(Oid objectId, Node *parsetree) +{ + CompositeTypeStmt *node = (CompositeTypeStmt *) parsetree; + ObjTree *composite; + HeapTuple typtup; + Form_pg_type typform; + Relation typerel; + List *dpcontext; + List *tableelts = NIL; + + /* Find the pg_type entry and open the corresponding relation */ + typtup = SearchSysCache1(TYPEOID, ObjectIdGetDatum(objectId)); + if (!HeapTupleIsValid(typtup)) + elog(ERROR, "cache lookup failed for type %u", objectId); + typform = (Form_pg_type) GETSTRUCT(typtup); + typerel = relation_open(typform->typrelid, AccessShareLock); + + dpcontext = deparse_context_for(RelationGetRelationName(typerel), + RelationGetRelid(typerel)); + + composite = new_objtree_VA("CREATE TYPE", 0); + append_object_object(composite, "%{identity}D", + new_objtree_for_qualname_id(TypeRelationId, + objectId)); + + tableelts = deparse_TableElements(typerel, node->coldeflist, dpcontext, + false, /* not typed */ + true); /* composite type */ + + append_array_object(composite, "AS (%{columns:, }s)", tableelts); + + table_close(typerel, AccessShareLock); + ReleaseSysCache(typtup); + + return composite; +} + +/* + * Deparse a CreateConversionStmt + * + * Given a conversion OID and the parse tree that created it, return an ObjTree + * representing the creation command. + */ +static ObjTree * +deparse_CreateConversion(Oid objectId, Node *parsetree) +{ + HeapTuple conTup; + Relation convrel; + Form_pg_conversion conForm; + ObjTree *ccStmt; + ObjTree *tmpObj; + + convrel = table_open(ConversionRelationId, AccessShareLock); + conTup = get_catalog_object_by_oid(convrel, Anum_pg_conversion_oid, objectId); + if (!HeapTupleIsValid(conTup)) + elog(ERROR, "cache lookup failed for conversion with OID %u", objectId); + conForm = (Form_pg_conversion) GETSTRUCT(conTup); + + /* + * Verbose syntax + * + * CREATE %{default}s CONVERSION %{identity}D FOR %{source}L TO %{dest}L + * FROM %{function}D + */ + ccStmt = new_objtree("CREATE"); + + + /* Add the DEFAULT clause */ + append_string_object(ccStmt, "default", + conForm->condefault ? "DEFAULT" : ""); + + tmpObj = new_objtree_for_qualname(conForm->connamespace, NameStr(conForm->conname)); + append_object_object(ccStmt, "CONVERSION %{identity}D", tmpObj); + append_string_object(ccStmt, "FOR %{source}L", (char *) + pg_encoding_to_char(conForm->conforencoding)); + append_string_object(ccStmt, "TO %{dest}L", (char *) + pg_encoding_to_char(conForm->contoencoding)); + append_object_object(ccStmt, "FROM %{function}D", + new_objtree_for_qualname_id(ProcedureRelationId, + conForm->conproc)); + + table_close(convrel, AccessShareLock); + + return ccStmt; +} + +/* + * Deparse a CreateEnumStmt (CREATE TYPE AS ENUM) + * + * Given a Enum type OID and the parse tree that created it, return an ObjTree + * representing the creation command. + */ +static ObjTree * +deparse_CreateEnumStmt(Oid objectId, Node *parsetree) +{ + CreateEnumStmt *node = (CreateEnumStmt *) parsetree; + ObjTree *enumtype; + List *values; + ListCell *cell; + + enumtype = new_objtree("CREATE TYPE"); + append_object_object(enumtype, "%{identity}D", + new_objtree_for_qualname_id(TypeRelationId, + objectId)); + + values = NIL; + foreach(cell, node->vals) + { + String *val = lfirst_node(String, cell); + + values = lappend(values, new_string_object(strVal(val))); + } + + append_array_object(enumtype, "AS ENUM (%{values:, }L)", values); + return enumtype; +} + +/* + * Deparse a CreateExtensionStmt + * + * Given an extension OID and the parse tree that created it, return the JSON + * blob representing the creation command. + * + */ +static ObjTree * +deparse_CreateExtensionStmt(Oid objectId, Node *parsetree) +{ + CreateExtensionStmt *node = (CreateExtensionStmt *) parsetree; + Relation pg_extension; + HeapTuple extTup; + Form_pg_extension extForm; + ObjTree *extStmt; + ObjTree *tmp; + List *list; + ListCell *cell; + + /* + * Verbose syntax + * + * CREATE EXTENSION %{if_not_exists}s %{identity}I %{options: }s + */ + + pg_extension = table_open(ExtensionRelationId, AccessShareLock); + extTup = get_catalog_object_by_oid(pg_extension, Anum_pg_extension_oid, objectId); + if (!HeapTupleIsValid(extTup)) + elog(ERROR, "cache lookup failed for extension with OID %u", + objectId); + extForm = (Form_pg_extension) GETSTRUCT(extTup); + + extStmt = new_objtree("CREATE EXTENSION"); + + append_string_object(extStmt, "%{if_not_exists}s", + node->if_not_exists ? "IF NOT EXISTS" : ""); + + append_string_object(extStmt, "%{name}I", node->extname); + + /* List of options */ + list = NIL; + foreach(cell, node->options) + { + DefElem *opt = (DefElem *) lfirst(cell); + + if (strcmp(opt->defname, "schema") == 0) + { + /* skip this one; we add one unconditionally below */ + continue; + } + else if (strcmp(opt->defname, "new_version") == 0) + { + tmp = new_objtree_VA("VERSION %{version}L", 2, + "type", ObjTypeString, "version", + "version", ObjTypeString, defGetString(opt)); + list = lappend(list, new_object_object(tmp)); + } + else if (strcmp(opt->defname, "old_version") == 0) + { + tmp = new_objtree_VA("FROM %{version}L", 2, + "type", ObjTypeString, "from", + "version", ObjTypeString, defGetString(opt)); + list = lappend(list, new_object_object(tmp)); + } + else + elog(ERROR, "unsupported option %s", opt->defname); + } + + /* Add the SCHEMA option */ + tmp = new_objtree_VA("SCHEMA %{schema}I", + 2, "type", ObjTypeString, "schema", + "schema", ObjTypeString, + get_namespace_name(extForm->extnamespace)); + list = lappend(list, new_object_object(tmp)); + + /* done */ + append_array_object(extStmt, "%{options: }s", list); + + table_close(pg_extension, AccessShareLock); + + return extStmt; +} + +/* + * If a column name is specified, add an element for it; otherwise it's a + * table-level option. + */ +static ObjTree * +deparse_FdwOptions(List *options, char *colname) +{ + ObjTree *tmp; + + if (colname) + tmp = new_objtree_VA("ALTER COLUMN %{column}I", + 1, "column", ObjTypeString, colname); + else + tmp = new_objtree_VA("OPTIONS", 0); + + if (options != NIL) + { + List *optout = NIL; + ListCell *cell; + + foreach(cell, options) + { + DefElem *elem; + ObjTree *opt; + + elem = (DefElem *) lfirst(cell); + + switch (elem->defaction) + { + case DEFELEM_UNSPEC: + opt = new_objtree_VA("%{label}I %{value}L", 2, + "label", ObjTypeString, elem->defname, + "value", ObjTypeString, + elem->arg ? defGetString(elem) : + defGetBoolean(elem) ? "TRUE" : "FALSE"); + break; + case DEFELEM_SET: + opt = new_objtree_VA("SET %{label}I %{value}L", 2, + "label", ObjTypeString, elem->defname, + "value", ObjTypeString, + elem->arg ? defGetString(elem) : + defGetBoolean(elem) ? "TRUE" : "FALSE"); + break; + case DEFELEM_ADD: + opt = new_objtree_VA("ADD %{label}I %{value}L", 2, + "label", ObjTypeString, elem->defname, + "value", ObjTypeString, + elem->arg ? defGetString(elem) : + defGetBoolean(elem) ? "TRUE" : "FALSE"); + break; + case DEFELEM_DROP: + opt = new_objtree_VA("DROP %{label}I", 1, + "label", ObjTypeString, elem->defname); + break; + default: + elog(ERROR, "invalid def action %d", elem->defaction); + opt = NULL; + } + + optout = lappend(optout, new_object_object(opt)); + } + + append_array_object(tmp, "(%{option: ,}s)", optout); + } + else + append_bool_object(tmp, "present", false); + + return tmp; +} + +/* + * Deparse a CreateFdwStmt (CREATE FOREIGN DATA WRAPPER) + * + * Given an FDW OID and the parse tree that created it, + * return an ObjTree representing the creation command. + */ +static ObjTree * +deparse_CreateFdwStmt(Oid objectId, Node *parsetree) +{ + CreateFdwStmt *node = (CreateFdwStmt *) parsetree; + HeapTuple fdwTup; + Form_pg_foreign_data_wrapper fdwForm; + Relation rel; + + ObjTree *createStmt; + ObjTree *tmp; + + rel = table_open(ForeignDataWrapperRelationId, RowExclusiveLock); + + fdwTup = SearchSysCache1(FOREIGNDATAWRAPPEROID, + ObjectIdGetDatum(objectId)); + if (!HeapTupleIsValid(fdwTup)) + elog(ERROR, "cache lookup failed for foreign-data wrapper %u", objectId); + + fdwForm = (Form_pg_foreign_data_wrapper) GETSTRUCT(fdwTup); + + createStmt = new_objtree_VA("CREATE FOREIGN DATA WRAPPER %{identity}I", 1, + "identity", ObjTypeString, NameStr(fdwForm->fdwname)); + + /* add HANDLER clause */ + if (fdwForm->fdwhandler == InvalidOid) + tmp = new_objtree_VA("NO HANDLER", 0); + else + { + tmp = new_objtree_VA("HANDLER %{procedure}D", 1, + "handler", ObjTypeObject, + new_objtree_for_qualname_id(ProcedureRelationId, + fdwForm->fdwhandler)); + } + append_object_object(createStmt, "%{handler}s", tmp); + + /* add VALIDATOR clause */ + if (fdwForm->fdwvalidator == InvalidOid) + tmp = new_objtree_VA("NO VALIDATOR", 0); + else + { + tmp = new_objtree_VA("VALIDATOR %{procedure}D", 1, + "validator", ObjTypeObject, + new_objtree_for_qualname_id(ProcedureRelationId, + fdwForm->fdwvalidator)); + } + append_object_object(createStmt, "%{validator}s", tmp); + + /* add an OPTIONS clause, if any */ + append_object_object(createStmt, "%{generic_options}s", + deparse_FdwOptions(node->options, NULL)); + + ReleaseSysCache(fdwTup); + table_close(rel, RowExclusiveLock); + + return createStmt; +} + +/* + * Deparse an AlterFdwStmt (ALTER FOREIGN DATA WRAPPER) + * + * Given an FDW OID and the parse tree that created it, return the + * JSON blob representing the alter command. + */ +static ObjTree * +deparse_AlterFdwStmt(Oid objectId, Node *parsetree) +{ + AlterFdwStmt *node = (AlterFdwStmt *) parsetree; + HeapTuple fdwTup; + Form_pg_foreign_data_wrapper fdwForm; + Relation rel; + ObjTree *alterStmt; + List *fdw_options = NIL; + ListCell *cell; + + rel = table_open(ForeignDataWrapperRelationId, RowExclusiveLock); + + fdwTup = SearchSysCache1(FOREIGNDATAWRAPPEROID, + ObjectIdGetDatum(objectId)); + if (!HeapTupleIsValid(fdwTup)) + elog(ERROR, "cache lookup failed for foreign-data wrapper %u", objectId); + + fdwForm = (Form_pg_foreign_data_wrapper) GETSTRUCT(fdwTup); + + alterStmt = new_objtree_VA("ALTER FOREIGN DATA WRAPPER %{identity}I", 1, + "identity", ObjTypeString, NameStr(fdwForm->fdwname)); + + /* + * Iterate through options, to see what changed, but use catalog as a + * basis for new values. + */ + foreach(cell, node->func_options) + { + DefElem *elem; + ObjTree *tmp; + + elem = lfirst(cell); + + if (pg_strcasecmp(elem->defname, "handler") == 0) + { + /* add HANDLER clause */ + if (fdwForm->fdwhandler == InvalidOid) + tmp = new_objtree_VA("NO HANDLER", 0); + else + { + tmp = new_objtree_VA("HANDLER %{procedure}D", 1, + "procedure", + new_objtree_for_qualname_id(ProcedureRelationId, + fdwForm->fdwhandler)); + } + fdw_options = lappend(fdw_options, new_object_object(tmp)); + } + else if (pg_strcasecmp(elem->defname, "validator") == 0) + { + /* add VALIDATOR clause */ + if (fdwForm->fdwvalidator == InvalidOid) + tmp = new_objtree_VA("NO VALIDATOR", 0); + else + { + tmp = new_objtree_VA("VALIDATOR %{procedure}D", 1, + "procedure", + new_objtree_for_qualname_id(ProcedureRelationId, + fdwForm->fdwvalidator)); + } + fdw_options = lappend(fdw_options, new_object_object(tmp)); + } + } + + /* Add HANDLER/VALIDATOR if specified */ + append_array_object(alterStmt, "%{fdw_options: }s", fdw_options); + + + /* add an OPTIONS clause, if any */ + append_object_object(alterStmt, "%{generic_options}D", + deparse_FdwOptions(node->options, NULL)); + + ReleaseSysCache(fdwTup); + table_close(rel, RowExclusiveLock); + + return alterStmt; +} + +/* + * Deparse a CREATE TYPE AS RANGE statement + * + * Given a Range type OID and the parse tree that created it, return an ObjTree + * representing the creation command. + */ +static ObjTree * +deparse_CreateRangeStmt(Oid objectId, Node *parsetree) +{ + ObjTree *range; + ObjTree *tmp; + List *definition = NIL; + Relation pg_range; + HeapTuple rangeTup; + Form_pg_range rangeForm; + ScanKeyData key[1]; + SysScanDesc scan; + + pg_range = table_open(RangeRelationId, RowExclusiveLock); + + ScanKeyInit(&key[0], + Anum_pg_range_rngtypid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(objectId)); + + scan = systable_beginscan(pg_range, RangeTypidIndexId, true, + NULL, 1, key); + + rangeTup = systable_getnext(scan); + if (!HeapTupleIsValid(rangeTup)) + elog(ERROR, "cache lookup failed for range with type oid %u", + objectId); + + rangeForm = (Form_pg_range) GETSTRUCT(rangeTup); + + range = new_objtree_VA("CREATE TYPE", 0); + tmp = new_objtree_for_qualname_id(TypeRelationId, objectId); + append_object_object(range, "%{identity}D AS RANGE", tmp); + + /* SUBTYPE */ + tmp = new_objtree_for_qualname_id(TypeRelationId, + rangeForm->rngsubtype); + tmp = new_objtree_VA("SUBTYPE = %{type}D", + 2, + "clause", ObjTypeString, "subtype", + "type", ObjTypeObject, tmp); + definition = lappend(definition, new_object_object(tmp)); + + /* SUBTYPE_OPCLASS */ + if (OidIsValid(rangeForm->rngsubopc)) + { + tmp = new_objtree_for_qualname_id(OperatorClassRelationId, + rangeForm->rngsubopc); + tmp = new_objtree_VA("SUBTYPE_OPCLASS = %{opclass}D", + 2, + "clause", ObjTypeString, "opclass", + "opclass", ObjTypeObject, tmp); + definition = lappend(definition, new_object_object(tmp)); + } + + /* COLLATION */ + if (OidIsValid(rangeForm->rngcollation)) + { + tmp = new_objtree_for_qualname_id(CollationRelationId, + rangeForm->rngcollation); + tmp = new_objtree_VA("COLLATION = %{collation}D", + 2, + "clause", ObjTypeString, "collation", + "collation", ObjTypeObject, tmp); + definition = lappend(definition, new_object_object(tmp)); + } + + /* CANONICAL */ + if (OidIsValid(rangeForm->rngcanonical)) + { + tmp = new_objtree_for_qualname_id(ProcedureRelationId, + rangeForm->rngcanonical); + tmp = new_objtree_VA("CANONICAL = %{canonical}D", + 2, + "clause", ObjTypeString, "canonical", + "canonical", ObjTypeObject, tmp); + definition = lappend(definition, new_object_object(tmp)); + } + + /* SUBTYPE_DIFF */ + if (OidIsValid(rangeForm->rngsubdiff)) + { + tmp = new_objtree_for_qualname_id(ProcedureRelationId, + rangeForm->rngsubdiff); + tmp = new_objtree_VA("SUBTYPE_DIFF = %{subtype_diff}D", + 2, + "clause", ObjTypeString, "subtype_diff", + "subtype_diff", ObjTypeObject, tmp); + definition = lappend(definition, new_object_object(tmp)); + } + + append_array_object(range, "(%{definition:, }s)", definition); + + systable_endscan(scan); + table_close(pg_range, RowExclusiveLock); + + return range; +} + +/* + * Deparse an AlterEnumStmt. + * + * Given an enum OID and a parse tree that modified it, return an ObjTree + * representing the alter type. + */ +static ObjTree * +deparse_AlterEnumStmt(Oid objectId, Node *parsetree) +{ + AlterEnumStmt *node = (AlterEnumStmt *) parsetree; + ObjTree *alterEnum; + + alterEnum = new_objtree_VA("ALTER TYPE", 0); + append_object_object(alterEnum, "%{identity}D", + new_objtree_for_qualname_id(TypeRelationId, + objectId)); + + if (!node->oldVal) + { + append_format_string(alterEnum, "ADD VALUE"); + append_string_object(alterEnum, "%{if_not_exists}s", + node->skipIfNewValExists ? "IF NOT EXISTS" : ""); + + append_string_object(alterEnum, "%{value}L", node->newVal); + + if (node->newValNeighbor) + { + append_string_object(alterEnum, "%{after_or_before}s", + node->newValIsAfter ? "AFTER" : "BEFORE"); + append_string_object(alterEnum, "%{neighbour}L", node->newValNeighbor); + } + } + else + { + append_string_object(alterEnum, "RENAME VALUE %{value}L TO", + node->oldVal); + append_string_object(alterEnum, "%{newvalue}L", + node->newVal); + } + + return alterEnum; +} + +/* + * Deparse an AlterExtensionStmt (ALTER EXTENSION .. UPDATE TO VERSION) + * + * Given an extension OID and a parse tree that modified it, return an ObjTree + * representing the alter type. + */ +static ObjTree * +deparse_AlterExtensionStmt(Oid objectId, Node *parsetree) +{ + AlterExtensionStmt *node = (AlterExtensionStmt *) parsetree; + Relation pg_extension; + HeapTuple extTup; + Form_pg_extension extForm; + ObjTree *stmt; + ObjTree *tmp; + List *list = NIL; + ListCell *cell; + + pg_extension = table_open(ExtensionRelationId, AccessShareLock); + extTup = get_catalog_object_by_oid(pg_extension, Anum_pg_extension_oid, objectId); + if (!HeapTupleIsValid(extTup)) + elog(ERROR, "cache lookup failed for extension with OID %u", + objectId); + extForm = (Form_pg_extension) GETSTRUCT(extTup); + + stmt = new_objtree_VA("ALTER EXTENSION %{identity}D UPDATE", 1, + "identity", ObjTypeObject, + new_objtree_for_qualname(extForm->extnamespace, + NameStr(extForm->extname))); + + foreach(cell, node->options) + { + DefElem *opt = (DefElem *) lfirst(cell); + + if (strcmp(opt->defname, "new_version") == 0) + { + tmp = new_objtree_VA("TO %{version}L", 2, + "type", ObjTypeString, "version", + "version", ObjTypeString, defGetString(opt)); + list = lappend(list, new_object_object(tmp)); + } + else + elog(ERROR, "unsupported option %s", opt->defname); + } + + append_array_object(stmt, "%{options: }s", list); + + table_close(pg_extension, AccessShareLock); + + return stmt; +} + +/* + * Deparse an AlterExtensionContentsStmt (ALTER EXTENSION ext ADD/DROP object) + * + */ +static ObjTree * +deparse_AlterExtensionContentsStmt(Oid objectId, Node *parsetree, + ObjectAddress objectAddress) +{ + AlterExtensionContentsStmt *node = (AlterExtensionContentsStmt *) parsetree; + ObjTree *stmt; + char *fmt; + + Assert(node->action == +1 || node->action == -1); + + fmt = psprintf("ALTER EXTENSION %%{extidentity}I %s %s %%{objidentity}s", + node->action == +1 ? "ADD" : "DROP", + stringify_objtype(node->objtype)); + + stmt = new_objtree_VA(fmt, 2, "extidentity", ObjTypeString, + node->extname, + "objidentity", ObjTypeString, + getObjectIdentity(&objectAddress, false)); + + return stmt; +} + +/* + * Deparse an CreateCastStmt. + * + * Given a sequence OID and a parse tree that modified it, return an ObjTree + * representing the creation command. + */ +static ObjTree * +deparse_CreateCastStmt(Oid objectId, Node *parsetree) +{ + CreateCastStmt *node = (CreateCastStmt *) parsetree; + Relation castrel; + HeapTuple castTup; + Form_pg_cast castForm; + ObjTree *createCast; + char *context; + + castrel = table_open(CastRelationId, AccessShareLock); + castTup = get_catalog_object_by_oid(castrel, Anum_pg_cast_oid, objectId); + if (!HeapTupleIsValid(castTup)) + elog(ERROR, "cache lookup failed for cast with OID %u", objectId); + castForm = (Form_pg_cast) GETSTRUCT(castTup); + + /* + * Verbose syntax + * + * CREATE CAST (%{sourcetype}T AS %{targettype}T) %{mechanism}s + * %{context}s + */ + createCast = new_objtree_VA("CREATE CAST (%{sourcetype}T AS %{targettype}T)", + 2, "sourcetype", ObjTypeObject, + new_objtree_for_type(castForm->castsource, -1), + "targettype", ObjTypeObject, + new_objtree_for_type(castForm->casttarget, -1)); + + if (node->inout) + append_string_object(createCast, "%{mechanism}s", "WITH INOUT"); + else if (node->func == NULL) + append_string_object(createCast, "%{mechanism}s", "WITHOUT FUNCTION"); + else + { + ObjTree *tmpobj; + StringInfoData func; + HeapTuple funcTup; + Form_pg_proc funcForm; + int i; + + funcTup = SearchSysCache1(PROCOID, castForm->castfunc); + funcForm = (Form_pg_proc) GETSTRUCT(funcTup); + + initStringInfo(&func); + appendStringInfo(&func, "%s(", + quote_qualified_identifier(get_namespace_name(funcForm->pronamespace), + NameStr(funcForm->proname))); + for (i = 0; i < funcForm->pronargs; i++) + appendStringInfoString(&func, + format_type_be_qualified(funcForm->proargtypes.values[i])); + appendStringInfoChar(&func, ')'); + + tmpobj = new_objtree_VA("WITH FUNCTION %{castfunction}s", 1, + "castfunction", ObjTypeString, func.data); + append_object_object(createCast, "%{mechanism}s", tmpobj); + + ReleaseSysCache(funcTup); + } + + switch (node->context) + { + case COERCION_IMPLICIT: + context = "AS IMPLICIT"; + break; + case COERCION_ASSIGNMENT: + context = "AS ASSIGNMENT"; + break; + case COERCION_EXPLICIT: + context = ""; + break; + default: + elog(ERROR, "invalid coercion code %c", node->context); + return NULL; /* keep compiler quiet */ + } + append_string_object(createCast, "%{context}s", context); + + table_close(castrel, AccessShareLock); + + return createCast; +} + +/* + * Deparse all the collected subcommands and return an ObjTree representing the + * alter command. + */ +static ObjTree * +deparse_AlterTableStmt(CollectedCommand *cmd) +{ + ObjTree *alterTableStmt; + ObjTree *tmpobj; + ObjTree *tmpobj2; + List *dpcontext; + Relation rel; + List *subcmds = NIL; + ListCell *cell; + char *fmtstr; + const char *reltype; + bool istype = false; + List *exprs = NIL; + + Assert(cmd->type == SCT_AlterTable); + + rel = relation_open(cmd->d.alterTable.objectId, AccessShareLock); + dpcontext = deparse_context_for(RelationGetRelationName(rel), + cmd->d.alterTable.objectId); + + switch (rel->rd_rel->relkind) + { + case RELKIND_RELATION: + case RELKIND_PARTITIONED_TABLE: + reltype = "TABLE"; + break; + case RELKIND_INDEX: + case RELKIND_PARTITIONED_INDEX: + reltype = "INDEX"; + break; + case RELKIND_VIEW: + reltype = "VIEW"; + break; + case RELKIND_COMPOSITE_TYPE: + reltype = "TYPE"; + istype = true; + break; + case RELKIND_FOREIGN_TABLE: + reltype = "FOREIGN TABLE"; + break; + + /* TODO support for partitioned table */ + + default: + elog(ERROR, "unexpected relkind %d", rel->rd_rel->relkind); + } + + /* + * Verbose syntax + * + * ALTER reltype %{identity}D %{subcmds:, }s + */ + fmtstr = psprintf("ALTER %s", reltype); + alterTableStmt = new_objtree(fmtstr); + + tmpobj = new_objtree_for_qualname(rel->rd_rel->relnamespace, + RelationGetRelationName(rel)); + append_object_object(alterTableStmt, "%{identity}D", tmpobj); + + foreach(cell, cmd->d.alterTable.subcmds) + { + CollectedATSubcmd *sub = (CollectedATSubcmd *) lfirst(cell); + AlterTableCmd *subcmd = (AlterTableCmd *) sub->parsetree; + ObjTree *tree; + + Assert(IsA(subcmd, AlterTableCmd)); + + switch (subcmd->subtype) + { + case AT_AddColumn: + case AT_AddColumnRecurse: + /* XXX need to set the "recurse" bit somewhere? */ + Assert(IsA(subcmd->def, ColumnDef)); + tree = deparse_ColumnDef(rel, dpcontext, false, + (ColumnDef *) subcmd->def, true, &exprs); + fmtstr = psprintf("ADD %s %%{definition}s", + istype ? "ATTRIBUTE" : "COLUMN"); + tmpobj = new_objtree_VA(fmtstr, 2, + "type", ObjTypeString, "add column", + "definition", ObjTypeObject, tree); + subcmds = lappend(subcmds, new_object_object(tmpobj)); + break; + + case AT_AddIndexConstraint: + { + IndexStmt *istmt; + Relation idx; + Oid constrOid = sub->address.objectId; + + Assert(IsA(subcmd->def, IndexStmt)); + istmt = (IndexStmt *) subcmd->def; + + Assert(istmt->isconstraint && istmt->unique); + + idx = relation_open(istmt->indexOid, AccessShareLock); + + /* + * Verbose syntax + * + * ADD CONSTRAINT %{name}I %{constraint_type}s USING INDEX + * %index_name}I %{deferrable}s %{init_deferred}s + */ + tmpobj = new_objtree_VA("ADD CONSTRAINT %{name}I", 2, + "type", ObjTypeString, "add constraint using index", + "name", ObjTypeString, get_constraint_name(constrOid)); + + append_string_object(tmpobj, "%{constraint_type}s", istmt->deferrable ? + "DEFERRABLE" : "NOT DEFERRABLE"); + append_string_object(tmpobj, "USING INDEX %{index_name}I", + RelationGetRelationName(idx)); + append_string_object(tmpobj, "%{deferrable}s", istmt->deferrable ? + "DEFERRABLE" : "NOT DEFERRABLE"); + append_string_object(tmpobj, "%{init_deferred}s", istmt->initdeferred ? + "INITIALLY DEFERRED" : "INITIALLY IMMEDIATE"); + + subcmds = lappend(subcmds, new_object_object(tmpobj)); + + relation_close(idx, AccessShareLock); + } + break; + + case AT_ReAddIndex: + case AT_ReAddConstraint: + case AT_ReAddComment: + case AT_ReplaceRelOptions: + /* Subtypes used for internal operations; nothing to do here */ + break; + + case AT_AddColumnToView: + /* CREATE OR REPLACE VIEW -- nothing to do here */ + break; + + case AT_ColumnDefault: + if (subcmd->def == NULL) + { + tmpobj = new_objtree_VA("ALTER COLUMN %{column}I DROP DEFAULT", 2, + "type", ObjTypeString, "drop default", + "column", ObjTypeString, subcmd->name); + } + else + { + List *dpcontext_rel; + HeapTuple attrtup; + AttrNumber attno; + + tmpobj = new_objtree_VA("ALTER COLUMN %{column}I SET DEFAULT", 2, + "type", ObjTypeString, "set default", + "column", ObjTypeString, subcmd->name); + + dpcontext_rel = deparse_context_for(RelationGetRelationName(rel), + RelationGetRelid(rel)); + attrtup = SearchSysCacheAttName(RelationGetRelid(rel), subcmd->name); + attno = ((Form_pg_attribute) GETSTRUCT(attrtup))->attnum; + append_string_object(tmpobj, "%{definition}s", + RelationGetColumnDefault(rel, attno, + dpcontext_rel, + NULL)); + ReleaseSysCache(attrtup); + } + + subcmds = lappend(subcmds, new_object_object(tmpobj)); + break; + + case AT_DropNotNull: + tmpobj = new_objtree_VA("ALTER COLUMN %{column}I DROP NOT NULL", 2, + "type", ObjTypeString, "drop not null", + "column", ObjTypeString, subcmd->name); + subcmds = lappend(subcmds, new_object_object(tmpobj)); + break; + + case AT_SetNotNull: + tmpobj = new_objtree_VA("ALTER COLUMN %{column}I SET NOT NULL", 2, + "type", ObjTypeString, "set not null", + "column", ObjTypeString, subcmd->name); + subcmds = lappend(subcmds, new_object_object(tmpobj)); + break; + + case AT_DropExpression: + tmpobj = new_objtree_VA("ALTER COLUMN %{column}I DROP EXPRESSION", 2, + "type", ObjTypeString, "drop expression", + "column", ObjTypeString, subcmd->name); + append_string_object(tmpobj, "%{if_not_exists}s", + subcmd->missing_ok ? "IF EXISTS" : ""); + subcmds = lappend(subcmds, new_object_object(tmpobj)); + break; + + case AT_SetStatistics: + { + Assert(IsA(subcmd->def, Integer)); + if (subcmd->name) + tmpobj = new_objtree_VA("ALTER COLUMN %{column}I SET STATISTICS %{statistics}n", + 3, + "type", ObjTypeString, "set statistics", + "column", ObjTypeString, subcmd->name, + "statistics", ObjTypeInteger, + intVal((Integer *) subcmd->def)); + else + tmpobj = new_objtree_VA("ALTER COLUMN %{column}n SET STATISTICS %{statistics}n", + 3, + "type", ObjTypeString, "set statistics", + "column", ObjTypeInteger, subcmd->num, + "statistics", ObjTypeInteger, + intVal((Integer *) subcmd->def)); + subcmds = lappend(subcmds, new_object_object(tmpobj)); + } + break; + + case AT_SetOptions: + case AT_ResetOptions: + subcmds = lappend(subcmds, new_object_object( + deparse_ColumnSetOptions(subcmd))); + break; + + case AT_SetStorage: + Assert(IsA(subcmd->def, String)); + tmpobj = new_objtree_VA("ALTER COLUMN %{column}I SET STORAGE %{storage}s", 3, + "type", ObjTypeString, "set storage", + "column", ObjTypeString, subcmd->name, + "storage", ObjTypeString, + strVal((String *) subcmd->def)); + subcmds = lappend(subcmds, new_object_object(tmpobj)); + break; + + case AT_SetCompression: + Assert(IsA(subcmd->def, String)); + tmpobj = new_objtree_VA("ALTER COLUMN %{column}I SET COMPRESSION %{compression_method}s", + 3, + "type", ObjTypeString, "set compression", + "column", ObjTypeString, subcmd->name, + "compression_method", ObjTypeString, + strVal((String *) subcmd->def)); + subcmds = lappend(subcmds, new_object_object(tmpobj)); + break; + + case AT_DropColumnRecurse: + case AT_DropColumn: + fmtstr = psprintf("DROP %s %%{column}I", + istype ? "ATTRIBUTE" : "COLUMN"); + tmpobj = new_objtree_VA(fmtstr, 2, + "type", ObjTypeString, "drop column", + "column", ObjTypeString, subcmd->name); + tmpobj2 = new_objtree_VA("CASCADE", 1, + "present", ObjTypeBool, subcmd->behavior); + append_object_object(tmpobj, "%{cascade}s", tmpobj2); + + subcmds = lappend(subcmds, new_object_object(tmpobj)); + break; + + case AT_AddIndex: + { + Oid idxOid = sub->address.objectId; + IndexStmt *istmt; + Relation idx; + const char *idxname; + Oid constrOid; + + Assert(IsA(subcmd->def, IndexStmt)); + istmt = (IndexStmt *) subcmd->def; + + if (!istmt->isconstraint) + break; + + idx = relation_open(idxOid, AccessShareLock); + idxname = RelationGetRelationName(idx); + + constrOid = get_relation_constraint_oid( + cmd->d.alterTable.objectId, idxname, false); + + tmpobj = new_objtree_VA("ADD CONSTRAINT %{name}I %{definition}s", 3, + "type", ObjTypeString, "add constraint", + "name", ObjTypeString, idxname, + "definition", ObjTypeString, + pg_get_constraintdef_command_simple(constrOid)); + subcmds = lappend(subcmds, new_object_object(tmpobj)); + + relation_close(idx, AccessShareLock); + } + break; + + case AT_AddConstraint: + case AT_AddConstraintRecurse: + { + /* XXX need to set the "recurse" bit somewhere? */ + Oid constrOid = sub->address.objectId; + bool isnull; + HeapTuple tup; + Datum val; + Constraint *constr; + + Assert(IsA(subcmd->def, Constraint)); + constr = castNode(Constraint, subcmd->def); + + if (!constr->skip_validation) + { + tup = SearchSysCache1(CONSTROID, ObjectIdGetDatum(constrOid)); + + if (HeapTupleIsValid(tup)) + { + char *conbin; + + /* Fetch constraint expression in parsetree form */ + val = SysCacheGetAttr(CONSTROID, tup, + Anum_pg_constraint_conbin, &isnull); + + if (!isnull) + { + conbin = TextDatumGetCString(val); + exprs = lappend(exprs, stringToNode(conbin)); + } + + ReleaseSysCache(tup); + } + } + + tmpobj = new_objtree_VA("ADD CONSTRAINT %{name}I %{definition}s", 3, + "type", ObjTypeString, "add constraint", + "name", ObjTypeString, get_constraint_name(constrOid), + "definition", ObjTypeString, + pg_get_constraintdef_command_simple(constrOid)); + subcmds = lappend(subcmds, new_object_object(tmpobj)); + } + break; + + case AT_AlterConstraint: + { + Oid constrOid = sub->address.objectId; + Constraint *c = (Constraint *) subcmd->def; + + /* If no constraint was altered, silently skip it */ + if (!OidIsValid(constrOid)) + break; + + Assert(IsA(c, Constraint)); + tmpobj = new_objtree_VA("ALTER CONSTRAINT %{name}I %{deferrable}s %{init_deferred}s", + 4, + "type", ObjTypeString, "alter constraint", + "name", ObjTypeString, get_constraint_name(constrOid), + "deferrable", ObjTypeString, + c->deferrable ? "DEFERRABLE" : "NOT DEFERRABLE", + "init_deferred", ObjTypeString, + c->initdeferred ? "INITIALLY DEFERRED" : "INITIALLY IMMEDIATE"); + + subcmds = lappend(subcmds, new_object_object(tmpobj)); + } + break; + + case AT_ValidateConstraintRecurse: + case AT_ValidateConstraint: + tmpobj = new_objtree_VA("VALIDATE CONSTRAINT %{constraint}I", 2, + "type", ObjTypeString, "validate constraint", + "constraint", ObjTypeString, subcmd->name); + subcmds = lappend(subcmds, new_object_object(tmpobj)); + break; + + case AT_DropConstraintRecurse: + case AT_DropConstraint: + tmpobj = new_objtree_VA("DROP CONSTRAINT %{constraint}I", 2, + "type", ObjTypeString, "drop constraint", + "constraint", ObjTypeString, subcmd->name); + subcmds = lappend(subcmds, new_object_object(tmpobj)); + break; + + case AT_AlterColumnType: + { + TupleDesc tupdesc = RelationGetDescr(rel); + Form_pg_attribute att; + ColumnDef *def; + + att = &(tupdesc->attrs[sub->address.objectSubId - 1]); + def = (ColumnDef *) subcmd->def; + Assert(IsA(def, ColumnDef)); + + /* + * Verbose syntax + * + * Composite types: ALTER reltype %{column}I SET DATA TYPE + * %{datatype}T %{collation}s ATTRIBUTE %{cascade}s + * + * Normal types: ALTER reltype %{column}I SET DATA TYPE + * %{datatype}T %{collation}s COLUMN %{using}s + */ + fmtstr = psprintf("ALTER %s %%{column}I SET DATA TYPE", + istype ? "ATTRIBUTE" : "COLUMN"); + + tmpobj = new_objtree_VA(fmtstr, 2, + "type", ObjTypeString, "alter column type", + "column", ObjTypeString, subcmd->name); + /* Add the TYPE clause */ + append_object_object(tmpobj, "%{datatype}T", + new_objtree_for_type(att->atttypid, + att->atttypmod)); + + /* Add a COLLATE clause, if needed */ + tmpobj2 = new_objtree("COLLATE"); + if (OidIsValid(att->attcollation)) + { + ObjTree *collname; + + collname = new_objtree_for_qualname_id(CollationRelationId, + att->attcollation); + append_object_object(tmpobj2, "%{name}D", collname); + } + else + append_bool_object(tmpobj2, "present", false); + append_object_object(tmpobj, "%{collation}s", tmpobj2); + + /* If not a composite type, add the USING clause */ + if (!istype) + { + /* + * If there's a USING clause, transformAlterTableStmt + * ran it through transformExpr and stored the + * resulting node in cooked_default, which we can use + * here. + */ + tmpobj2 = new_objtree("USING"); + if (def->raw_default) + { + Datum deparsed; + char *defexpr; + + exprs = lappend(exprs, def->cooked_default); + defexpr = nodeToString(def->cooked_default); + deparsed = DirectFunctionCall2(pg_get_expr, + CStringGetTextDatum(defexpr), + RelationGetRelid(rel)); + append_string_object(tmpobj2, "%{expression}s", + TextDatumGetCString(deparsed)); + } + else + append_bool_object(tmpobj2, "present", false); + append_object_object(tmpobj, "%{using}s", tmpobj2); + } + + /* If it's a composite type, add the CASCADE clause */ + if (istype) + { + tmpobj2 = new_objtree("CASCADE"); + if (subcmd->behavior != DROP_CASCADE) + append_bool_object(tmpobj2, "present", false); + append_object_object(tmpobj, "%{cascade}s", tmpobj2); + } + + subcmds = lappend(subcmds, new_object_object(tmpobj)); + } + break; + +#ifdef TODOLIST + case AT_AlterColumnGenericOptions: + tmpobj = deparse_FdwOptions((List *) subcmd->def, + subcmd->name); + subcmds = lappend(subcmds, new_object_object(tmpobj)); + break; +#endif + case AT_ChangeOwner: + tmpobj = new_objtree_VA("OWNER TO %{owner}I", 2, + "type", ObjTypeString, "change owner", + "owner", ObjTypeString, + get_rolespec_name(subcmd->newowner)); + subcmds = lappend(subcmds, new_object_object(tmpobj)); + break; + + case AT_ClusterOn: + tmpobj = new_objtree_VA("CLUSTER ON %{index}I", 2, + "type", ObjTypeString, "cluster on", + "index", ObjTypeString, subcmd->name); + subcmds = lappend(subcmds, new_object_object(tmpobj)); + break; + + case AT_DropCluster: + tmpobj = new_objtree_VA("SET WITHOUT CLUSTER", 1, + "type", ObjTypeString, "set without cluster"); + subcmds = lappend(subcmds, new_object_object(tmpobj)); + break; + + case AT_SetLogged: + tmpobj = new_objtree_VA("SET LOGGED", 1, + "type", ObjTypeString, "set logged"); + subcmds = lappend(subcmds, new_object_object(tmpobj)); + break; + + case AT_SetUnLogged: + tmpobj = new_objtree_VA("SET UNLOGGED", 1, + "type", ObjTypeString, "set unlogged"); + subcmds = lappend(subcmds, new_object_object(tmpobj)); + break; + + case AT_DropOids: + tmpobj = new_objtree_VA("SET WITHOUT OIDS", 1, + "type", ObjTypeString, "set without oids"); + subcmds = lappend(subcmds, new_object_object(tmpobj)); + break; + case AT_SetAccessMethod: + tmpobj = new_objtree_VA("SET ACCESS METHOD %{access_method}I", 2, + "type", ObjTypeString, "set access method", + "access_method", ObjTypeString, subcmd->name); + subcmds = lappend(subcmds, new_object_object(tmpobj)); + break; + case AT_SetTableSpace: + tmpobj = new_objtree_VA("SET TABLESPACE %{tablespace}I", 2, + "type", ObjTypeString, "set tablespace", + "tablespace", ObjTypeString, subcmd->name); + subcmds = lappend(subcmds, new_object_object(tmpobj)); + break; + + case AT_SetRelOptions: + case AT_ResetRelOptions: + subcmds = lappend(subcmds, new_object_object( + deparse_RelSetOptions(subcmd))); + break; + + case AT_EnableTrig: + tmpobj = new_objtree_VA("ENABLE TRIGGER %{trigger}I", 2, + "type", ObjTypeString, "enable trigger", + "trigger", ObjTypeString, subcmd->name); + subcmds = lappend(subcmds, new_object_object(tmpobj)); + break; + + case AT_EnableAlwaysTrig: + tmpobj = new_objtree_VA("ENABLE ALWAYS TRIGGER %{trigger}I", 2, + "type", ObjTypeString, "enable always trigger", + "trigger", ObjTypeString, subcmd->name); + subcmds = lappend(subcmds, new_object_object(tmpobj)); + break; + + case AT_EnableReplicaTrig: + tmpobj = new_objtree_VA("ENABLE REPLICA TRIGGER %{trigger}I", 2, + "type", ObjTypeString, "enable replica trigger", + "trigger", ObjTypeString, subcmd->name); + subcmds = lappend(subcmds, new_object_object(tmpobj)); + break; + + case AT_DisableTrig: + tmpobj = new_objtree_VA("DISABLE TRIGGER %{trigger}I", 2, + "type", ObjTypeString, "disable trigger", + "trigger", ObjTypeString, subcmd->name); + subcmds = lappend(subcmds, new_object_object(tmpobj)); + break; + + case AT_EnableTrigAll: + tmpobj = new_objtree_VA("ENABLE TRIGGER ALL", 1, + "type", ObjTypeString, "enable trigger all"); + subcmds = lappend(subcmds, new_object_object(tmpobj)); + break; + + case AT_DisableTrigAll: + tmpobj = new_objtree_VA("DISABLE TRIGGER ALL", 1, + "type", ObjTypeString, "disable trigger all"); + subcmds = lappend(subcmds, new_object_object(tmpobj)); + break; + + case AT_EnableTrigUser: + tmpobj = new_objtree_VA("ENABLE TRIGGER USER", 1, + "type", ObjTypeString, "enable trigger user"); + subcmds = lappend(subcmds, new_object_object(tmpobj)); + break; + + case AT_DisableTrigUser: + tmpobj = new_objtree_VA("DISABLE TRIGGER USER", 1, + "type", ObjTypeString, "disable trigger user"); + subcmds = lappend(subcmds, new_object_object(tmpobj)); + break; + + case AT_EnableRule: + tmpobj = new_objtree_VA("ENABLE RULE %{rule}I", 2, + "type", ObjTypeString, "enable rule", + "rule", ObjTypeString, subcmd->name); + subcmds = lappend(subcmds, new_object_object(tmpobj)); + break; + + case AT_EnableAlwaysRule: + tmpobj = new_objtree_VA("ENABLE ALWAYS RULE %{rule}I", 2, + "type", ObjTypeString, "enable always rule", + "rule", ObjTypeString, subcmd->name); + subcmds = lappend(subcmds, new_object_object(tmpobj)); + break; + + case AT_EnableReplicaRule: + tmpobj = new_objtree_VA("ENABLE REPLICA RULE %{rule}I", 2, + "type", ObjTypeString, "enable replica rule", + "rule", ObjTypeString, subcmd->name); + subcmds = lappend(subcmds, new_object_object(tmpobj)); + break; + + case AT_DisableRule: + tmpobj = new_objtree_VA("DISABLE RULE %{rule}I", 2, + "type", ObjTypeString, "disable rule", + "rule", ObjTypeString, subcmd->name); + subcmds = lappend(subcmds, new_object_object(tmpobj)); + break; + + case AT_AddInherit: + tmpobj = new_objtree_VA("INHERIT %{parent}D", 2, + "type", ObjTypeString, "inherit", + "parent", ObjTypeObject, + new_objtree_for_qualname_id(RelationRelationId, + sub->address.objectId)); + subcmds = lappend(subcmds, new_object_object(tmpobj)); + break; + + case AT_DropInherit: + tmpobj = new_objtree_VA("NO INHERIT %{parent}D", 2, + "type", ObjTypeString, "drop inherit", + "parent", ObjTypeObject, + new_objtree_for_qualname_id(RelationRelationId, + sub->address.objectId)); + subcmds = lappend(subcmds, new_object_object(tmpobj)); + break; + + case AT_AddOf: + tmpobj = new_objtree_VA("OF %{type_of}T", 2, + "type", ObjTypeString, "add of", + "type_of", ObjTypeObject, + new_objtree_for_type(sub->address.objectId, -1)); + subcmds = lappend(subcmds, new_object_object(tmpobj)); + break; + + case AT_DropOf: + tmpobj = new_objtree_VA("NOT OF", 1, + "type", ObjTypeString, "not of"); + subcmds = lappend(subcmds, new_object_object(tmpobj)); + break; + + case AT_ReplicaIdentity: + tmpobj = new_objtree_VA("REPLICA IDENTITY", 1, + "type", ObjTypeString, "replica identity"); + switch (((ReplicaIdentityStmt *) subcmd->def)->identity_type) + { + case REPLICA_IDENTITY_DEFAULT: + append_string_object(tmpobj, "%{ident}s", "DEFAULT"); + break; + case REPLICA_IDENTITY_FULL: + append_string_object(tmpobj, "%{ident}s", "FULL"); + break; + case REPLICA_IDENTITY_NOTHING: + append_string_object(tmpobj, "%{ident}s", "NOTHING"); + break; + case REPLICA_IDENTITY_INDEX: + tmpobj2 = new_objtree_VA("USING INDEX %{index}I", 1, + "index", ObjTypeString, + ((ReplicaIdentityStmt *) subcmd->def)->name); + append_object_object(tmpobj, "%{ident}s", tmpobj2); + break; + } + subcmds = lappend(subcmds, new_object_object(tmpobj)); + break; + + case AT_EnableRowSecurity: + tmpobj = new_objtree_VA("ENABLE ROW LEVEL SECURITY", 1, + "type", ObjTypeString, "enable row security"); + subcmds = lappend(subcmds, new_object_object(tmpobj)); + break; + + case AT_DisableRowSecurity: + tmpobj = new_objtree_VA("DISABLE ROW LEVEL SECURITY", 1, + "type", ObjTypeString, "disable row security"); + subcmds = lappend(subcmds, new_object_object(tmpobj)); + break; +#ifdef TODOLIST + case AT_GenericOptions: + tmpobj = deparse_FdwOptions((List *) subcmd->def, NULL); + subcmds = lappend(subcmds, new_object_object(tmpobj)); + break; +#endif + case AT_AttachPartition: + tmpobj = new_objtree_VA("ATTACH PARTITION %{partition_identity}D", 2, + "type", ObjTypeString, "attach partition", + "partition_identity", ObjTypeObject, + new_objtree_for_qualname_id(RelationRelationId, + sub->address.objectId)); + + if (rel->rd_rel->relkind == RELKIND_PARTITIONED_TABLE) + append_string_object(tmpobj, "%{partition_bound}s", + RelationGetPartitionBound(sub->address.objectId)); + + subcmds = lappend(subcmds, new_object_object(tmpobj)); + break; + case AT_DetachPartition: + tmpobj = new_objtree_VA("DETACH PARTITION %{partition_identity}D", 2, + "type", ObjTypeString, "detach partition", + "partition_identity", ObjTypeObject, + new_objtree_for_qualname_id(RelationRelationId, + sub->address.objectId)); + subcmds = lappend(subcmds, new_object_object(tmpobj)); + break; + case AT_DetachPartitionFinalize: + tmpobj = new_objtree_VA("DETACH PARTITION %{partition_identity}D FINALIZE", 2, + "type", ObjTypeString, "detach partition finalize", + "partition_identity", ObjTypeObject, + new_objtree_for_qualname_id(RelationRelationId, + sub->address.objectId)); + subcmds = lappend(subcmds, new_object_object(tmpobj)); + break; + case AT_AddIdentity: + { + AttrNumber attnum; + Oid seq_relid; + ObjTree *seqdef; + ColumnDef *coldef = (ColumnDef *) subcmd->def; + + tmpobj = new_objtree_VA("ALTER COLUMN %{column}I ADD %{identity_column}s", 2, + "type", ObjTypeString, "add identity", + "column", ObjTypeString, subcmd->name); + + attnum = get_attnum(RelationGetRelid(rel), subcmd->name); + seq_relid = getIdentitySequence(RelationGetRelid(rel), attnum, true); + seqdef = deparse_ColumnIdentity(seq_relid, coldef->identity, false); + + append_object_object(tmpobj, "identity_column", seqdef); + + subcmds = lappend(subcmds, new_object_object(tmpobj)); + } + break; + case AT_SetIdentity: + { + DefElem *defel; + char identity = 0; + ObjTree *seqdef; + AttrNumber attnum; + Oid seq_relid; + + + tmpobj = new_objtree_VA("ALTER COLUMN %{column}I", 2, + "type", ObjTypeString, "set identity", + "column", ObjTypeString, subcmd->name); + + if (subcmd->def) + { + List *def = (List *) subcmd->def; + + Assert(IsA(subcmd->def, List)); + + defel = linitial_node(DefElem, def); + identity = defGetInt32(defel); + } + + attnum = get_attnum(RelationGetRelid(rel), subcmd->name); + seq_relid = getIdentitySequence(RelationGetRelid(rel), attnum, true); + seqdef = deparse_ColumnIdentity(seq_relid, identity, true); + + append_object_object(tmpobj, "%{definition}s", seqdef); + + subcmds = lappend(subcmds, new_object_object(tmpobj)); + break; + } + case AT_DropIdentity: + tmpobj = new_objtree_VA("ALTER COLUMN %{column}I DROP IDENTITY", 2, + "type", ObjTypeString, "drop identity", + "column", ObjTypeString, subcmd->name); + + append_string_object(tmpobj, "%{if_not_exists}s", + subcmd->missing_ok ? "IF EXISTS" : ""); + + subcmds = lappend(subcmds, new_object_object(tmpobj)); + break; + default: + elog(WARNING, "unsupported alter table subtype %d", + subcmd->subtype); + break; + } + + /* + * We don't support replicating ALTER TABLE which contains volatile + * functions because It's possible the functions contain DDL/DML in + * which case these operations will be executed twice and cause + * duplicate data. In addition, we don't know whether the tables being + * accessed by these DDL/DML are published or not. So blindly allowing + * such functions can allow unintended clauses like the tables + * accessed in those functions may not even exist on the subscriber. + */ + if (contain_volatile_functions((Node *) exprs)) + ereport(ERROR, + (errcode(ERRCODE_FEATURE_NOT_SUPPORTED), + errmsg("ALTER TABLE command using volatile function cannot be replicated"))); + + /* + * Clean the list as we already confirmed there is no volatile + * function. + */ + list_free(exprs); + exprs = NIL; + } + + table_close(rel, AccessShareLock); + + if (list_length(subcmds) == 0) + return NULL; + + append_array_object(alterTableStmt, "%{subcmds:, }s", subcmds); + + return alterTableStmt; +} + +/* + * Subroutine for CREATE TABLE deparsing. + * + * Deparse a ColumnDef node within a regular (non-typed) table creation. + * + * NOT NULL constraints in the column definition are emitted directly in the + * column definition by this routine; other constraints must be emitted + * elsewhere (the info in the parse node is incomplete anyway.). + */ +static ObjTree * +deparse_ColumnDef(Relation relation, List *dpcontext, bool composite, + ColumnDef *coldef, bool is_alter, List **exprs) +{ + ObjTree *column; + ObjTree *tmpobj; + Oid relid = RelationGetRelid(relation); + HeapTuple attrTup; + Form_pg_attribute attrForm; + Oid typid; + int32 typmod; + Oid typcollation; + bool saw_notnull; + ListCell *cell; + + /* + * Inherited columns without local definitions must not be emitted. + * + * XXX maybe it is useful to have them with "present = false" or some + * such? + */ + if (!coldef->is_local) + return NULL; + + attrTup = SearchSysCacheAttName(relid, coldef->colname); + if (!HeapTupleIsValid(attrTup)) + elog(ERROR, "could not find cache entry for column \"%s\" of relation %u", + coldef->colname, relid); + attrForm = (Form_pg_attribute) GETSTRUCT(attrTup); + + get_atttypetypmodcoll(relid, attrForm->attnum, + &typid, &typmod, &typcollation); + + /* + * Verbose syntax + * + * %{name}I %{coltype}T %{compression}s %{default}s %{not_null}s + * %{collation}s + */ + column = new_objtree_VA("%{name}I %{coltype}T", 3, + "type", ObjTypeString, "column", + "name", ObjTypeString, coldef->colname, + "coltype", ObjTypeObject, + new_objtree_for_type(typid, typmod)); + + /* USING clause */ + tmpobj = new_objtree("COMPRESSION"); + if (coldef->compression) + append_string_object(tmpobj, "%{compression_method}I", coldef->compression); + else + { + append_null_object(tmpobj, "%{compression_method}I"); + append_bool_object(tmpobj, "present", false); + } + append_object_object(column, "%{compression}s", tmpobj); + + tmpobj = new_objtree("COLLATE"); + if (OidIsValid(typcollation)) + { + ObjTree *collname; + + collname = new_objtree_for_qualname_id(CollationRelationId, + typcollation); + append_object_object(tmpobj, "%{name}D", collname); + } + else + append_bool_object(tmpobj, "present", false); + append_object_object(column, "%{collation}s", tmpobj); + + if (!composite) + { + Oid seqrelid = InvalidOid; + + /* + * Emit a NOT NULL declaration if necessary. Note that we cannot + * trust pg_attribute.attnotnull here, because that bit is also set + * when primary keys are specified; we must not emit a NOT NULL + * constraint in that case, unless explicitly specified. Therefore, + * we scan the list of constraints attached to this column to + * determine whether we need to emit anything. (Fortunately, NOT NULL + * constraints cannot be table constraints.) + * + * In the ALTER TABLE cases, we also add a NOT NULL if the colDef is + * marked is_not_null. + */ + saw_notnull = false; + foreach(cell, coldef->constraints) + { + Constraint *constr = (Constraint *) lfirst(cell); + + if (constr->contype == CONSTR_NOTNULL) + saw_notnull = true; + } + if (is_alter && coldef->is_not_null) + saw_notnull = true; + + append_string_object(column, "%{not_null}s", + saw_notnull ? "NOT NULL" : ""); + + tmpobj = new_objtree("DEFAULT"); + if (attrForm->atthasdef) + { + char *defstr; + + defstr = RelationGetColumnDefault(relation, attrForm->attnum, + dpcontext, exprs); + + append_string_object(tmpobj, "%{default}s", defstr); + } + else + append_bool_object(tmpobj, "present", false); + append_object_object(column, "%{default}s", tmpobj); + + /* IDENTITY COLUMN */ + if (coldef->identity) + { + Oid attno = get_attnum(relid, coldef->colname); + + seqrelid = getIdentitySequence(relid, attno, false); + } + + tmpobj = deparse_ColumnIdentity(seqrelid, coldef->identity, is_alter); + append_object_object(column, "%{identity_column}s", tmpobj); + + /* GENERATED COLUMN EXPRESSION */ + tmpobj = new_objtree("GENERATED ALWAYS AS"); + if (coldef->generated == ATTRIBUTE_GENERATED_STORED) + { + char *defstr; + + defstr = RelationGetColumnDefault(relation, attrForm->attnum, + dpcontext, exprs); + append_string_object(tmpobj, "%{generation_expr}s STORED", defstr); + } + else + append_bool_object(tmpobj, "present", false); + + append_object_object(column, "%{generated_column}s", tmpobj); + } + + ReleaseSysCache(attrTup); + + return column; +} + +/* + * Subroutine for CREATE TABLE OF deparsing. + * + * Deparse a ColumnDef node within a typed table creation. This is simpler + * than the regular case, because we don't have to emit the type declaration, + * collation, or default. Here we only return something if the column is being + * declared NOT NULL. + * + * As in deparse_ColumnDef, any other constraint is processed elsewhere. + */ +static ObjTree * +deparse_ColumnDef_typed(Relation relation, List *dpcontext, ColumnDef *coldef) +{ + ObjTree *column = NULL; + ObjTree *tmpobj; + Oid relid = RelationGetRelid(relation); + HeapTuple attrTup; + Form_pg_attribute attrForm; + Oid typid; + int32 typmod; + Oid typcollation; + bool saw_notnull; + ListCell *cell; + + attrTup = SearchSysCacheAttName(relid, coldef->colname); + if (!HeapTupleIsValid(attrTup)) + elog(ERROR, "could not find cache entry for column \"%s\" of relation %u", + coldef->colname, relid); + attrForm = (Form_pg_attribute) GETSTRUCT(attrTup); + + get_atttypetypmodcoll(relid, attrForm->attnum, + &typid, &typmod, &typcollation); + + /* + * Search for a NOT NULL declaration. As in deparse_ColumnDef, we rely on + * finding a constraint on the column rather than coldef->is_not_null. + * (This routine is never used for ALTER cases.) + */ + saw_notnull = false; + foreach(cell, coldef->constraints) + { + Constraint *constr = (Constraint *) lfirst(cell); + + if (constr->contype == CONSTR_NOTNULL) + { + saw_notnull = true; + break; + } + } + + if (!saw_notnull && !attrForm->atthasdef) + { + ReleaseSysCache(attrTup); + return NULL; + } + + /* + * Verbose syntax + * + * %{name}I WITH OPTIONS %{default}s %{not_null}s. + */ + column = new_objtree_VA("%{name}I WITH OPTIONS", 2, + "type", ObjTypeString, "column", + "name", ObjTypeString, coldef->colname); + + append_string_object(column, "%{not_null}s", + saw_notnull ? "NOT NULL" : ""); + + tmpobj = new_objtree("DEFAULT"); + if (attrForm->atthasdef) + { + char *defstr; + + defstr = RelationGetColumnDefault(relation, attrForm->attnum, + dpcontext, NULL); + + append_string_object(tmpobj, "%{default}s", defstr); + } + else + append_bool_object(tmpobj, "present", false); + append_object_object(column, "%{default}s", tmpobj); + + /* + * Generated columns are not supported on typed tables, so we are done. + */ + + ReleaseSysCache(attrTup); + + return column; +} + +/* + * Deparse the definition of column identity. + */ +static ObjTree * +deparse_ColumnIdentity(Oid seqrelid, char identity, bool alter_table) +{ + ObjTree *column; + ObjTree *identobj; + List *elems = NIL; + Relation rel; + HeapTuple seqtuple; + Form_pg_sequence seqform; + Form_pg_sequence_data seqdata; + char *identfmt; + char *objfmt; + + column = new_objtree(""); + + if (!OidIsValid(seqrelid)) + { + append_bool_object(column, "present", false); + return column; + } + + if (alter_table) + { + identfmt = "SET GENERATED "; + objfmt = "%{option}s"; + } + else + { + identfmt = "GENERATED "; + objfmt = "%{option}s AS IDENTITY"; + } + + identobj = new_objtree(identfmt); + + if (identity == ATTRIBUTE_IDENTITY_ALWAYS) + append_string_object(identobj, objfmt, "ALWAYS"); + else if (identity == ATTRIBUTE_IDENTITY_BY_DEFAULT) + append_string_object(identobj, objfmt, "BY DEFAULT"); + else + append_bool_object(identobj, "present", false); + + append_object_object(column, "%{identity_type}s", identobj); + + rel = table_open(SequenceRelationId, RowExclusiveLock); + seqtuple = SearchSysCacheCopy1(SEQRELID, seqrelid); + if (!HeapTupleIsValid(seqtuple)) + elog(ERROR, "cache lookup failed for sequence %u", + seqrelid); + + seqform = (Form_pg_sequence) GETSTRUCT(seqtuple); + seqdata = get_sequence_values(seqrelid); + + /* Definition elements */ + elems = lappend(elems, deparse_Seq_Cache(NULL, seqform, alter_table)); + elems = lappend(elems, deparse_Seq_Cycle(NULL, seqform, alter_table)); + elems = lappend(elems, deparse_Seq_IncrementBy(NULL, seqform, alter_table)); + elems = lappend(elems, deparse_Seq_Minvalue(NULL, seqform, alter_table)); + elems = lappend(elems, deparse_Seq_Maxvalue(NULL, seqform, alter_table)); + elems = lappend(elems, deparse_Seq_Startwith(NULL, seqform, alter_table)); + elems = lappend(elems, deparse_Seq_Restart(NULL, seqdata)); + /* We purposefully do not emit OWNED BY here */ + + if (alter_table) + append_array_object(column, "%{seq_definition: }s", elems); + else + append_array_object(column, "( %{seq_definition: }s )", elems); + + table_close(rel, RowExclusiveLock); + + return column; +} + +/* + * ... ALTER COLUMN ... SET/RESET (...) + */ +static ObjTree * +deparse_ColumnSetOptions(AlterTableCmd *subcmd) +{ + List *sets = NIL; + ListCell *cell; + ObjTree *colset; + char *fmt; + bool is_reset = subcmd->subtype == AT_ResetOptions; + + /* + * Verbose syntax + * + * ALTER COLUMN %{column}I RESET|SET (%{options:, }s) + */ + if (is_reset) + fmt = "ALTER COLUMN %{column}I RESET "; + else + fmt = "ALTER COLUMN %{column}I SET "; + + colset = new_objtree_VA(fmt, 1, "column", ObjTypeString, subcmd->name); + + foreach(cell, (List *) subcmd->def) + { + DefElem *elem; + ObjTree *set; + + elem = (DefElem *) lfirst(cell); + set = deparse_DefElem(elem, is_reset); + sets = lappend(sets, new_object_object(set)); + } + + Assert(sets); + append_array_object(colset, "(%{options:, }s)", sets); + + return colset; +} + +/* + * Deparse the CREATE DOMAIN + * + * Given a function OID and the parse tree that created it, return the JSON + * blob representing the creation command. + */ +static ObjTree * +deparse_CreateDomain(Oid objectId, Node *parsetree) +{ + ObjTree *createDomain; + ObjTree *tmpobj; + HeapTuple typTup; + Form_pg_type typForm; + List *constraints; + + typTup = SearchSysCache1(TYPEOID, objectId); + if (!HeapTupleIsValid(typTup)) + elog(ERROR, "cache lookup failed for domain with OID %u", objectId); + typForm = (Form_pg_type) GETSTRUCT(typTup); + + /* + * Verbose syntax + * + * CREATE DOMAIN %{identity}D AS %{type}T %{not_null}s %{constraints}s + * %{collation}s + */ + createDomain = new_objtree("CREATE"); + + append_object_object(createDomain, + "DOMAIN %{identity}D AS", + new_objtree_for_qualname_id(TypeRelationId, + objectId)); + append_object_object(createDomain, + "%{type}T", + new_objtree_for_type(typForm->typbasetype, typForm->typtypmod)); + + if (typForm->typnotnull) + append_string_object(createDomain, "%{not_null}s", "NOT NULL"); + else + append_string_object(createDomain, "%{not_null}s", ""); + + constraints = obtainConstraints(NIL, InvalidOid, objectId); + if (constraints == NIL) + { + tmpobj = new_objtree(""); + append_bool_object(tmpobj, "present", false); + } + else + tmpobj = new_objtree_VA("%{elements:, }s", 1, + "elements", ObjTypeArray, constraints); + append_object_object(createDomain, "%{constraints}s", tmpobj); + + tmpobj = new_objtree("COLLATE"); + if (OidIsValid(typForm->typcollation)) + { + ObjTree *collname; + + collname = new_objtree_for_qualname_id(CollationRelationId, + typForm->typcollation); + append_object_object(tmpobj, "%{name}D", collname); + } + else + append_bool_object(tmpobj, "present", false); + append_object_object(createDomain, "%{collation}s", tmpobj); + + ReleaseSysCache(typTup); + + return createDomain; +} + +/* + * Deparse a CreateFunctionStmt (CREATE FUNCTION) + * + * Given a function OID and the parse tree that created it, return the JSON + * blob representing the creation command. + */ +static ObjTree * +deparse_CreateFunction(Oid objectId, Node *parsetree) +{ + CreateFunctionStmt *node = (CreateFunctionStmt *) parsetree; + ObjTree *createFunc; + ObjTree *tmpobj; + Datum tmpdatum; + char *source; + char *probin; + List *params; + List *defaults; + List *sets = NIL; + List *types = NIL; + ListCell *cell; + ListCell *curdef; + ListCell *table_params = NULL; + HeapTuple procTup; + Form_pg_proc procForm; + HeapTuple langTup; + Oid *typarray; + Oid *trftypes; + Form_pg_language langForm; + int i; + int typnum; + int ntypes; + bool isnull; + bool isfunction; + + /* Get the pg_proc tuple */ + procTup = SearchSysCache1(PROCOID, objectId); + if (!HeapTupleIsValid(procTup)) + elog(ERROR, "cache lookup failure for function with OID %u", + objectId); + procForm = (Form_pg_proc) GETSTRUCT(procTup); + + /* Get the corresponding pg_language tuple */ + langTup = SearchSysCache1(LANGOID, procForm->prolang); + if (!HeapTupleIsValid(langTup)) + elog(ERROR, "cache lookup failure for language with OID %u", + procForm->prolang); + langForm = (Form_pg_language) GETSTRUCT(langTup); + + /* + * Determine useful values for prosrc and probin. We cope with probin + * being either NULL or "-", but prosrc must have a valid value. + */ + tmpdatum = SysCacheGetAttr(PROCOID, procTup, + Anum_pg_proc_prosrc, &isnull); + if (isnull) + elog(ERROR, "null prosrc in function with OID %u", objectId); + source = TextDatumGetCString(tmpdatum); + + /* Determine a useful value for probin */ + tmpdatum = SysCacheGetAttr(PROCOID, procTup, + Anum_pg_proc_probin, &isnull); + if (isnull) + probin = NULL; + else + { + probin = TextDatumGetCString(tmpdatum); + if (probin[0] == '\0' || strcmp(probin, "-") == 0) + probin = NULL; + } + + /* + * Verbose syntax + * + * CREATE %{or_replace}s FUNCTION %{signature}s RETURNS %{return_type}s + * LANGUAGE %{transform_type}s %{language}I %{window}s %{volatility}s + * %{parallel_safety}s %{leakproof}s %{strict}s %{security_definer}s + * %{cost}s %{rows}s %{support}s %{set_options: }s AS %{objfile}L, + * %{symbol}L + */ + createFunc = new_objtree("CREATE"); + + append_string_object(createFunc, "%{or_replace}s", + node->replace ? "OR REPLACE" : ""); + + /* + * To construct the arguments array, extract the type OIDs from the + * function's pg_proc entry. If pronargs equals the parameter list + * length, there are no OUT parameters and thus we can extract the type + * OID from proargtypes; otherwise we need to decode proallargtypes, which + * is a bit more involved. + */ + typarray = palloc(list_length(node->parameters) * sizeof(Oid)); + if (list_length(node->parameters) > procForm->pronargs) + { + Datum alltypes; + Datum *values; + bool *nulls; + int nelems; + + alltypes = SysCacheGetAttr(PROCOID, procTup, + Anum_pg_proc_proallargtypes, &isnull); + if (isnull) + elog(ERROR, "NULL proallargtypes, but more parameters than args"); + deconstruct_array(DatumGetArrayTypeP(alltypes), + OIDOID, 4, 't', 'i', + &values, &nulls, &nelems); + if (nelems != list_length(node->parameters)) + elog(ERROR, "mismatched proallargatypes"); + for (i = 0; i < list_length(node->parameters); i++) + typarray[i] = values[i]; + } + else + { + for (i = 0; i < list_length(node->parameters); i++) + typarray[i] = procForm->proargtypes.values[i]; + } + + /* + * If there are any default expressions, we read the deparsed expression + * as a list so that we can attach them to each argument. + */ + tmpdatum = SysCacheGetAttr(PROCOID, procTup, + Anum_pg_proc_proargdefaults, &isnull); + if (!isnull) + { + defaults = FunctionGetDefaults(DatumGetTextP(tmpdatum)); + curdef = list_head(defaults); + } + else + { + defaults = NIL; + curdef = NULL; + } + + /* + * Now iterate over each parameter in the parse tree to create the + * parameters array. + */ + params = NIL; + typnum = 0; + foreach(cell, node->parameters) + { + FunctionParameter *param = (FunctionParameter *) lfirst(cell); + ObjTree *paramobj; + ObjTree *defaultval; + ObjTree *name; + + /* + * A PARAM_TABLE parameter indicates the end of input arguments; the + * following parameters are part of the return type. We ignore them + * here, but keep track of the current position in the list so that we + * can easily produce the return type below. + */ + if (param->mode == FUNC_PARAM_TABLE) + { + table_params = cell; + break; + } + + /* + * Verbose syntax for paramater: %{mode}s %{name}s %{type}T + * %{default}s + * + * Note that %{name}s is a string here, not an identifier; the reason + * for this is that an absent parameter name must produce an empty + * string, not "", which is what would happen if we were to use + * %{name}I here. So we add another level of indirection to allow us + * to inject a "present" parameter. + */ + paramobj = new_objtree(""); + append_string_object(paramobj, "%{mode}s", + param->mode == FUNC_PARAM_IN ? "IN" : + param->mode == FUNC_PARAM_OUT ? "OUT" : + param->mode == FUNC_PARAM_INOUT ? "INOUT" : + param->mode == FUNC_PARAM_VARIADIC ? "VARIADIC" : + "IN"); + + /* Optional wholesale suppression of "name" occurs here */ + + name = new_objtree(""); + append_string_object(name, "%{name}I", + param->name ? param->name : "NULL"); + + append_bool_object(name, "present", + param->name ? true : false); + + append_object_object(paramobj, "%{name}s", name); + + defaultval = new_objtree("DEFAULT"); + if (PointerIsValid(param->defexpr)) + { + char *expr; + + if (curdef == NULL) + elog(ERROR, "proargdefaults list too short"); + expr = lfirst(curdef); + + append_string_object(defaultval, "%{value}s", expr); + curdef = lnext(defaults, curdef); + } + else + append_bool_object(defaultval, "present", false); + + append_object_object(paramobj, "%{type}T", + new_objtree_for_type(typarray[typnum++], -1)); + + append_object_object(paramobj, "%{default}s", defaultval); + + params = lappend(params, new_object_object(paramobj)); + } + + tmpobj = new_objtree_VA("%{identity}D", 1, + "identity", ObjTypeObject, + new_objtree_for_qualname_id(ProcedureRelationId, + objectId)); + + append_format_string(tmpobj, "("); + append_array_object(tmpobj, "%{arguments:, }s", params); + append_format_string(tmpobj, ")"); + + isfunction = (procForm->prokind != PROKIND_PROCEDURE); + + if (isfunction) + append_object_object(createFunc, "FUNCTION %{signature}s", tmpobj); + else + append_object_object(createFunc, "PROCEDURE %{signature}s", tmpobj); + + /* + * A return type can adopt one of two forms: either a [SETOF] some_type, + * or a TABLE(list-of-types). We can tell the second form because we saw + * a table param above while scanning the argument list. + */ + if (table_params == NULL) + { + tmpobj = new_objtree_VA("", 1, + "return_form", ObjTypeString, "plain"); + append_string_object(tmpobj, "%{setof}s", + procForm->proretset ? "SETOF" : ""); + append_object_object(tmpobj, "%{rettype}T", + new_objtree_for_type(procForm->prorettype, -1)); + } + else + { + List *rettypes = NIL; + ObjTree *paramobj; + + tmpobj = new_objtree_VA("TABLE", 1, + "return_form", ObjTypeString, "table"); + for (; table_params != NULL; table_params = lnext(node->parameters, table_params)) + { + FunctionParameter *param = lfirst(table_params); + + paramobj = new_objtree(""); + append_string_object(paramobj, "%{name}I", param->name); + append_object_object(paramobj, "%{type}T", + new_objtree_for_type(typarray[typnum++], -1)); + rettypes = lappend(rettypes, new_object_object(paramobj)); + } + + append_array_object(tmpobj, "(%{rettypes:, }s)", rettypes); + } + + if (isfunction) + append_object_object(createFunc, "RETURNS %{return_type}s", tmpobj); + + /* TRANSFORM FOR TYPE */ + tmpobj = new_objtree("TRANSFORM"); + + ntypes = get_func_trftypes(procTup, &trftypes); + for (i = 0; i < ntypes; i++) + { + tmpobj = new_objtree_VA("FOR TYPE %{type}T", 1, + "type", ObjTypeObject, + new_objtree_for_type(trftypes[i], -1)); + types = lappend(types, tmpobj); + } + + if (types) + append_array_object(tmpobj, "%{for_type:, }s", types); + else + append_bool_object(tmpobj, "present", false); + + append_object_object(createFunc, "%{transform_type}s", tmpobj); + + append_string_object(createFunc, "LANGUAGE %{language}I", + NameStr(langForm->lanname)); + + if (isfunction) + { + append_string_object(createFunc, "%{window}s", + procForm->prokind == PROKIND_WINDOW ? "WINDOW" : ""); + append_string_object(createFunc, "%{volatility}s", + procForm->provolatile == PROVOLATILE_VOLATILE ? + "VOLATILE" : + procForm->provolatile == PROVOLATILE_STABLE ? + "STABLE" : "IMMUTABLE"); + + append_string_object(createFunc, "%{parallel_safety}s", + procForm->proparallel == PROPARALLEL_SAFE ? + "PARALLEL SAFE" : + procForm->proparallel == PROPARALLEL_RESTRICTED ? + "PARALLEL RESTRICTED" : "PARALLEL UNSAFE"); + + append_string_object(createFunc, "%{leakproof}s", + procForm->proleakproof ? "LEAKPROOF" : ""); + append_string_object(createFunc, "%{strict}s", + procForm->proisstrict ? + "RETURNS NULL ON NULL INPUT" : + "CALLED ON NULL INPUT"); + + append_string_object(createFunc, "%{security_definer}s", + procForm->prosecdef ? + "SECURITY DEFINER" : "SECURITY INVOKER"); + + append_object_object(createFunc, "%{cost}s", + new_objtree_VA("COST %{cost}n", 1, + "cost", ObjTypeFloat, + procForm->procost)); + + tmpobj = new_objtree("ROWS"); + if (procForm->prorows == 0) + append_bool_object(tmpobj, "present", false); + else + append_float_object(tmpobj, "%{rows}n", procForm->prorows); + append_object_object(createFunc, "%{rows}s", tmpobj); + + tmpobj = new_objtree("SUPPORT %{name}s"); + if (procForm->prosupport) + { + Oid argtypes[1]; + + /* + * We should qualify the support function's name if it wouldn't be + * resolved by lookup in the current search path. + */ + argtypes[0] = INTERNALOID; + append_string_object(tmpobj, "%{name}s", + generate_function_name(procForm->prosupport, 1, + NIL, argtypes, + false, NULL, + EXPR_KIND_NONE)); + } + else + append_bool_object(tmpobj, "present", false); + + append_object_object(createFunc, "%{support}s", tmpobj); + } + + foreach(cell, node->options) + { + DefElem *defel = (DefElem *) lfirst(cell); + + if (strcmp(defel->defname, "set") == 0) + { + VariableSetStmt *sstmt = (VariableSetStmt *) defel->arg; + char *value = ExtractSetVariableArgs(sstmt); + + tmpobj = deparse_FunctionSet(sstmt->kind, sstmt->name, value); + sets = lappend(sets, new_object_object(tmpobj)); + } + } + append_array_object(createFunc, "%{set_options: }s", sets); + + /* Add the function definition */ + (void) SysCacheGetAttr(PROCOID, procTup, Anum_pg_proc_prosqlbody, &isnull); + if (procForm->prolang == SQLlanguageId && !isnull) + { + StringInfoData buf; + + initStringInfo(&buf); + print_function_sqlbody(&buf, procTup); + + append_string_object(createFunc, "%{definition}s", buf.data); + } + else if (probin == NULL) + { + append_string_object(createFunc, "AS %{definition}L", + source); + } + else + { + append_string_object(createFunc, "AS %{objfile}L", probin); + append_string_object(createFunc, ", %{symbol}L", source); + } + + ReleaseSysCache(langTup); + ReleaseSysCache(procTup); + + return createFunc; +} + +/* + * Deparse a CREATE OPERATOR CLASS command. + */ +static ObjTree * +deparse_CreateOpClassStmt(CollectedCommand *cmd) +{ + Oid opcoid = cmd->d.createopc.address.objectId; + HeapTuple opcTup; + HeapTuple opfTup; + Form_pg_opfamily opfForm; + Form_pg_opclass opcForm; + ObjTree *stmt; + ObjTree *tmpobj; + List *list; + ListCell *cell; + + /* Don't deparse SQL commands generated while creating extension */ + if (cmd->in_extension) + return NULL; + + opcTup = SearchSysCache1(CLAOID, ObjectIdGetDatum(opcoid)); + if (!HeapTupleIsValid(opcTup)) + elog(ERROR, "cache lookup failed for opclass with OID %u", opcoid); + opcForm = (Form_pg_opclass) GETSTRUCT(opcTup); + + opfTup = SearchSysCache1(OPFAMILYOID, opcForm->opcfamily); + if (!HeapTupleIsValid(opfTup)) + elog(ERROR, "cache lookup failed for operator family with OID %u", opcForm->opcfamily); + opfForm = (Form_pg_opfamily) GETSTRUCT(opfTup); + + /* + * Verbose syntax + * + * CREATE OPERATOR CLASS %{identity}D %{default}s FOR TYPE %{type}T USING + * %{amname}I %{opfamily}s AS %{items:, }s + */ + + stmt = new_objtree_VA("CREATE OPERATOR CLASS %{identity}D", 1, + "identity", ObjTypeObject, + new_objtree_for_qualname(opcForm->opcnamespace, + NameStr(opcForm->opcname))); + + /* Add the DEFAULT clause */ + append_string_object(stmt, "%{default}s", + opcForm->opcdefault ? "DEFAULT" : ""); + + /* Add the FOR TYPE clause */ + append_object_object(stmt, "FOR TYPE %{type}T", + new_objtree_for_type(opcForm->opcintype, -1)); + + /* Add the USING clause */ + append_string_object(stmt, "USING %{amname}I", get_am_name(opcForm->opcmethod)); + + /* + * Add the FAMILY clause, but if it has the same name and namespace as the + * opclass, then have it expand to empty because it would cause a failure + * if the opfamily was created internally. + */ + tmpobj = new_objtree_VA("FAMILY %{opfamily}D", 1, + "opfamily", ObjTypeObject, + new_objtree_for_qualname(opfForm->opfnamespace, + NameStr(opfForm->opfname))); + + if (strcmp(NameStr(opfForm->opfname), NameStr(opcForm->opcname)) == 0 && + opfForm->opfnamespace == opcForm->opcnamespace) + append_bool_object(tmpobj, "present", false); + + append_object_object(stmt, "%{opfamily}s", tmpobj); + + /* + * Add the initial item list. Note we always add the STORAGE clause, even + * when it is implicit in the original command. + */ + tmpobj = new_objtree("STORAGE"); + append_object_object(tmpobj, "%{type}T", + new_objtree_for_type(opcForm->opckeytype != InvalidOid ? + opcForm->opckeytype : opcForm->opcintype, + -1)); + list = list_make1(new_object_object(tmpobj)); + + /* Add the declared operators */ + foreach(cell, cmd->d.createopc.operators) + { + OpFamilyMember *oper = lfirst(cell); + + tmpobj = new_objtree_VA("OPERATOR %{num}n %{operator}O(%{ltype}T, %{rtype}T)", + 4, + "num", ObjTypeInteger, oper->number, + "operator", ObjTypeObject, + new_objtree_for_qualname_id(OperatorRelationId, + oper->object), + "ltype", ObjTypeObject, + new_objtree_for_type(oper->lefttype, -1), + "rtype", ObjTypeObject, + new_objtree_for_type(oper->righttype, -1)); + + /* Add the FOR SEARCH / FOR ORDER BY clause */ + if (oper->sortfamily == InvalidOid) + append_string_object(tmpobj, "%{purpose}s", "FOR SEARCH"); + else + { + ObjTree *tmpobj2; + + tmpobj2 = new_objtree_VA("FOR ORDER BY %{opfamily}D", 0); + append_object_object(tmpobj2, "opfamily", + new_objtree_for_qualname_id(OperatorFamilyRelationId, + oper->sortfamily)); + append_object_object(tmpobj, "%{purpose}s", tmpobj2); + } + + list = lappend(list, new_object_object(tmpobj)); + } + + /* Add the declared support functions */ + foreach(cell, cmd->d.createopc.procedures) + { + OpFamilyMember *proc = lfirst(cell); + HeapTuple procTup; + Form_pg_proc procForm; + Oid *proargtypes; + List *arglist = NIL; + int i; + + procTup = SearchSysCache1(PROCOID, ObjectIdGetDatum(proc->object)); + if (!HeapTupleIsValid(procTup)) + elog(ERROR, "cache lookup failed for procedure %u", proc->object); + procForm = (Form_pg_proc) GETSTRUCT(procTup); + + tmpobj = new_objtree_VA("FUNCTION %{num}n (%{ltype}T, %{rtype}T) %{function}D", + 4, + "num", ObjTypeInteger, proc->number, + "ltype", ObjTypeObject, + new_objtree_for_type(proc->lefttype, -1), + "rtype", ObjTypeObject, + new_objtree_for_type(proc->righttype, -1), + "function", ObjTypeObject, + new_objtree_for_qualname(procForm->pronamespace, + NameStr(procForm->proname))); + + proargtypes = procForm->proargtypes.values; + for (i = 0; i < procForm->pronargs; i++) + { + ObjTree *arg; + + arg = new_objtree_for_type(proargtypes[i], -1); + arglist = lappend(arglist, new_object_object(arg)); + } + + append_format_string(tmpobj, "("); + append_array_object(tmpobj, "%{argtypes:, }T", arglist); + append_format_string(tmpobj, ")"); + + ReleaseSysCache(procTup); + + list = lappend(list, new_object_object(tmpobj)); + } + + append_array_object(stmt, "AS %{items:, }s", list); + + ReleaseSysCache(opfTup); + ReleaseSysCache(opcTup); + + return stmt; +} + +/* + * Deparse a CreateTrigStmt (CREATE OPERATOR FAMILY) + * + * Given a trigger OID and the parse tree that created it, return an ObjTree + * representing the creation command. + */ +static ObjTree * +deparse_CreateOpFamily(Oid objectId, Node *parsetree) +{ + HeapTuple opfTup; + HeapTuple amTup; + Form_pg_opfamily opfForm; + Form_pg_am amForm; + ObjTree *copfStmt; + + opfTup = SearchSysCache1(OPFAMILYOID, ObjectIdGetDatum(objectId)); + if (!HeapTupleIsValid(opfTup)) + elog(ERROR, "cache lookup failed for operator family with OID %u", objectId); + opfForm = (Form_pg_opfamily) GETSTRUCT(opfTup); + + amTup = SearchSysCache1(AMOID, ObjectIdGetDatum(opfForm->opfmethod)); + if (!HeapTupleIsValid(amTup)) + elog(ERROR, "cache lookup failed for access method %u", + opfForm->opfmethod); + amForm = (Form_pg_am) GETSTRUCT(amTup); + + copfStmt = new_objtree_VA("CREATE OPERATOR FAMILY %{identity}D USING %{amname}I", + 2, + "identity", ObjTypeObject, + new_objtree_for_qualname(opfForm->opfnamespace, + NameStr(opfForm->opfname)), + "amname", ObjTypeString, NameStr(amForm->amname)); + + ReleaseSysCache(amTup); + ReleaseSysCache(opfTup); + + return copfStmt; +} + +static ObjTree * +deparse_CreatePolicyStmt(Oid objectId, Node *parsetree) +{ + CreatePolicyStmt *node = (CreatePolicyStmt *) parsetree; + ObjTree *policy; + + policy = new_objtree_VA("CREATE POLICY %{identity}I", 1, + "identity", ObjTypeString, node->policy_name); + + /* Add the rest of the stuff */ + add_policy_clauses(policy, objectId, node->roles, !!node->qual, + !!node->with_check); + + return policy; +} + +static ObjTree * +deparse_AlterPolicyStmt(Oid objectId, Node *parsetree) +{ + AlterPolicyStmt *node = (AlterPolicyStmt *) parsetree; + ObjTree *policy; + + policy = new_objtree_VA("ALTER POLICY %{identity}I", 1, + "identity", ObjTypeString, node->policy_name); + + /* Add the rest of the stuff */ + add_policy_clauses(policy, objectId, node->roles, !!node->qual, + !!node->with_check); + + return policy; +} + +/* + * Deparse a CreateSchemaStmt. + * + * Given a schema OID and the parse tree that created it, return an ObjTree + * representing the creation command. + * + */ +static ObjTree * +deparse_CreateSchemaStmt(Oid objectId, Node *parsetree) +{ + CreateSchemaStmt *node = (CreateSchemaStmt *) parsetree; + ObjTree *createSchema; + ObjTree *auth; + + /* + * Verbose syntax + * + * CREATE SCHEMA %{if_not_exists}s %{name}I %{authorization}s + */ + createSchema = new_objtree("CREATE SCHEMA"); + + append_string_object(createSchema, "%{if_not_exists}s", + node->if_not_exists ? "IF NOT EXISTS" : ""); + + append_string_object(createSchema, "%{name}I", node->schemaname); + + auth = new_objtree("AUTHORIZATION"); + if (node->authrole) + append_string_object(auth, "%{authorization_role}I", + get_rolespec_name(node->authrole)); + else + { + append_null_object(auth, "%{authorization_role}I "); + append_bool_object(auth, "present", false); + } + append_object_object(createSchema, "%{authorization}s", auth); + + return createSchema; +} + +/* + * Return the default value of a domain. + */ +static char * +DomainGetDefault(HeapTuple domTup) +{ + Datum def; + Node *defval; + char *defstr; + bool isnull; + + def = SysCacheGetAttr(TYPEOID, domTup, Anum_pg_type_typdefaultbin, + &isnull); + if (isnull) + elog(ERROR, "domain \"%s\" does not have a default value", + NameStr(((Form_pg_type) GETSTRUCT(domTup))->typname)); + defval = stringToNode(TextDatumGetCString(def)); + defstr = deparse_expression(defval, NULL /* dpcontext? */ , + false, false); + + return defstr; +} + +/* + * Deparse a AlterDomainStmt. + */ +static ObjTree * +deparse_AlterDomainStmt(Oid objectId, Node *parsetree, + ObjectAddress constraintAddr) +{ + AlterDomainStmt *node = (AlterDomainStmt *) parsetree; + HeapTuple domTup; + Form_pg_type domForm; + ObjTree *alterDom; + char *fmt; + const char *type; + + /* ALTER DOMAIN DROP CONSTRAINT is handled by the DROP support code */ + if (node->subtype == 'X') + return NULL; + + domTup = SearchSysCache1(TYPEOID, objectId); + if (!HeapTupleIsValid(domTup)) + elog(ERROR, "cache lookup failed for domain with OID %u", + objectId); + domForm = (Form_pg_type) GETSTRUCT(domTup); + + switch (node->subtype) + { + case 'T': + /* SET DEFAULT / DROP DEFAULT */ + if (node->def == NULL) + { + fmt = "ALTER DOMAIN"; + type = "drop default"; + alterDom = new_objtree_VA(fmt, 1, "type", ObjTypeString, type); + append_object_object(alterDom, "%{identity}D DROP DEFAULT", + new_objtree_for_qualname(domForm->typnamespace, + NameStr(domForm->typname))); + } + else + { + fmt = "ALTER DOMAIN"; + type = "set default"; + alterDom = new_objtree_VA(fmt, 1, "type", ObjTypeString, type); + append_object_object(alterDom, "%{identity}D SET DEFAULT", + new_objtree_for_qualname(domForm->typnamespace, + NameStr(domForm->typname))); + append_string_object(alterDom, "%{default}s", DomainGetDefault(domTup)); + } + + break; + case 'N': + /* DROP NOT NULL */ + fmt = "ALTER DOMAIN"; + type = "drop not null"; + alterDom = new_objtree_VA(fmt, 1, "type", ObjTypeString, type); + append_object_object(alterDom, "%{identity}D DROP NOT NULL", + new_objtree_for_qualname(domForm->typnamespace, + NameStr(domForm->typname))); + break; + case 'O': + /* SET NOT NULL */ + fmt = "ALTER DOMAIN"; + type = "set not null"; + alterDom = new_objtree_VA(fmt, 1, "type", ObjTypeString, type); + append_object_object(alterDom, "%{identity}D SET NOT NULL", + new_objtree_for_qualname(domForm->typnamespace, + NameStr(domForm->typname))); + break; + case 'C': + + /* + * ADD CONSTRAINT. Only CHECK constraints are supported by + * domains + */ + fmt = "ALTER DOMAIN"; + type = "add constraint"; + alterDom = new_objtree_VA(fmt, 1, "type", ObjTypeString, type); + append_object_object(alterDom, "%{identity}D", + new_objtree_for_qualname(domForm->typnamespace, + NameStr(domForm->typname))); + /* A new constraint has a name and definition */ + append_string_object(alterDom, "ADD CONSTRAINT %{constraint_name}s", + get_constraint_name(constraintAddr.objectId)); + append_string_object(alterDom, "%{definition}s", + pg_get_constraintdef_command_simple(constraintAddr.objectId)); + break; + case 'V': + /* VALIDATE CONSTRAINT */ + fmt = "ALTER DOMAIN"; + type = "validate constraint"; + + /* + * Process subtype=specific options. Validation a constraint + * requires its name. + */ + alterDom = new_objtree_VA(fmt, 1, "type", ObjTypeString, type); + append_object_object(alterDom, "%{identity}D", + new_objtree_for_qualname(domForm->typnamespace, + NameStr(domForm->typname))); + append_string_object(alterDom, "VALIDATE CONSTRAINT %{constraint_name}s", node->name); + + break; + default: + elog(ERROR, "invalid subtype %c", node->subtype); + } + + /* Done */ + ReleaseSysCache(domTup); + + return alterDom; +} + +/* + * Deparse a CreateStatsStmt. + * + * Given a statistics OID and the parse tree that created it, return an ObjTree + * representing the creation command. + */ +static ObjTree * +deparse_CreateStatisticsStmt(Oid objectId, Node *parsetree) +{ + CreateStatsStmt *node = (CreateStatsStmt *) parsetree; + Form_pg_statistic_ext statform; + ObjTree *createStat; + HeapTuple tup; + Datum datum; + bool isnull; + List *statexprs = NIL; + + createStat = new_objtree("CREATE STATISTICS"); + append_string_object(createStat, "%{if_not_exists}s", + node->if_not_exists ? "IF NOT EXISTS" : ""); + + tup = SearchSysCache1(STATEXTOID, ObjectIdGetDatum(objectId)); + if (!HeapTupleIsValid(tup)) + elog(ERROR, "cache lookup failed for statistic %u", objectId); + + statform = (Form_pg_statistic_ext) GETSTRUCT(tup); + + append_object_object(createStat, "%{identity}D", + new_objtree_for_qualname(statform->stxnamespace, + NameStr(statform->stxname))); + + datum = SysCacheGetAttr(STATEXTOID, tup, Anum_pg_statistic_ext_stxexprs, + &isnull); + if (!isnull) + { + ListCell *lc; + Relation statsrel; + List *context; + List *exprs = NIL; + char *exprsString; + + statsrel = relation_open(statform->stxrelid, AccessShareLock); + context = deparse_context_for(RelationGetRelationName(statsrel), + RelationGetRelid(statsrel)); + + exprsString = TextDatumGetCString(datum); + exprs = (List *) stringToNode(exprsString); + + foreach(lc, exprs) + { + Node *expr = (Node *) lfirst(lc); + char *statexpr; + + statexpr = deparse_expression(expr, context, false, false); + statexprs = lappend(statexprs, new_string_object(statexpr)); + } + + append_array_object(createStat, "ON %{expr:, }s", statexprs); + pfree(exprsString); + relation_close(statsrel, AccessShareLock); + } + + datum = SysCacheGetAttr(STATEXTOID, tup, Anum_pg_statistic_ext_stxkeys, + &isnull); + if (!isnull) + { + int keyno; + char *attname; + List *statcols = NIL; + int2vector *indoption; + + indoption = (int2vector *) DatumGetPointer(datum); + + for (keyno = 0; keyno < indoption->dim1; keyno++) + { + attname = get_attname(statform->stxrelid, indoption->values[keyno], + false); + statcols = lappend(statcols, new_string_object(attname)); + } + + if (indoption->dim1) + { + /* Append a ',' if statexprs is present else append 'ON' */ + append_string_object(createStat, "%{comma}s", statexprs ? "," : "ON"); + append_array_object(createStat, "%{cols:, }s", statcols); + } + } + + append_format_string(createStat, "FROM"); + + append_object_object(createStat, "%{stat_table_identity}D", + new_objtree_for_qualname(get_rel_namespace(statform->stxrelid), + get_rel_name(statform->stxrelid))); + + ReleaseSysCache(tup); + + return createStat; +} + +/* + * Deparse an CreateForeignServerStmt (CREATE SERVER) + * + * Given a server OID and the parse tree that created it, return the JSON + * blob representing the alter command. + */ +static ObjTree * +deparse_CreateForeignServerStmt(Oid objectId, Node *parsetree) +{ + CreateForeignServerStmt *node = (CreateForeignServerStmt *) parsetree; + ObjTree *createServer; + ObjTree *tmp; + + createServer = new_objtree_VA("CREATE SERVER %{identity}I", 1, + "identity", ObjTypeString, node->servername); + + /* Add a TYPE clause, if any */ + tmp = new_objtree_VA("TYPE", 0); + if (node->servertype) + append_string_object(tmp, "%{type}L", node->servertype); + else + append_bool_object(tmp, "present", false); + append_object_object(createServer, "%{type}s", tmp); + + /* Add a VERSION clause, if any */ + tmp = new_objtree_VA("VERSION", 0); + if (node->version) + append_string_object(tmp, "%{version}L", node->version); + else + append_bool_object(tmp, "present", false); + append_object_object(createServer, "%{version}s", tmp); + + append_string_object(createServer, "FOREIGN DATA WRAPPER %{fdw}I", node->fdwname); + /* add an OPTIONS clause, if any */ + append_object_object(createServer, "%{generic_options}s", + deparse_FdwOptions(node->options, NULL)); + + return createServer; +} + +/* + * Deparse an AlterForeignServerStmt (ALTER SERVER) + * + * Given a server OID and the parse tree that created it, return the JSON + * blob representing the alter command. + */ +static ObjTree * +deparse_AlterForeignServerStmt(Oid objectId, Node *parsetree) +{ + AlterForeignServerStmt *node = (AlterForeignServerStmt *) parsetree; + ObjTree *alterServer; + ObjTree *tmp; + + alterServer = new_objtree_VA("ALTER SERVER %{identity}I", 1, + "identity", ObjTypeString, node->servername); + + /* Add a VERSION clause, if any */ + tmp = new_objtree_VA("VERSION", 0); + if (node->has_version && node->version) + append_string_object(tmp, "%{version}L", node->version); + else if (node->has_version) + append_string_object(tmp, "version", "NULL"); + else + append_bool_object(tmp, "present", false); + append_object_object(alterServer, "%{version}s", tmp); + + /* Add a VERSION clause, if any */ + tmp = new_objtree_VA("VERSION", 0); + if (node->has_version && node->version) + append_string_object(tmp, "%{version}L", node->version); + else if (node->has_version) + append_string_object(tmp, "version", "NULL"); + else + append_bool_object(tmp, "present", false); + append_object_object(alterServer, "%{version}s", tmp); + + /* add an OPTIONS clause, if any */ + append_object_object(alterServer, "%{generic_options}s", + deparse_FdwOptions(node->options, NULL)); + + return alterServer; +} + +/* + * Deparse a CreateSeqStmt. + * + * Given a sequence OID and the parse tree that created it, return an ObjTree + * representing the creation command. + */ +static ObjTree * +deparse_CreateSeqStmt(Oid objectId, Node *parsetree) +{ + ObjTree *createSeq; + ObjTree *tmpobj; + Relation relation; + Form_pg_sequence_data seqdata; + List *elems = NIL; + Form_pg_sequence seqform; + Relation rel; + HeapTuple seqtuple; + CreateSeqStmt *createSeqStmt = (CreateSeqStmt *) parsetree; + + /* + * Sequence for IDENTITY COLUMN output separately(via CREATE TABLE or + * ALTER TABLE); return empty here. + */ + if (createSeqStmt->for_identity) + return NULL; + + seqdata = get_sequence_values(objectId); + + relation = relation_open(objectId, AccessShareLock); + rel = table_open(SequenceRelationId, RowExclusiveLock); + seqtuple = SearchSysCacheCopy1(SEQRELID, + ObjectIdGetDatum(objectId)); + if (!HeapTupleIsValid(seqtuple)) + elog(ERROR, "cache lookup failed for sequence %u", + objectId); + + seqform = (Form_pg_sequence) GETSTRUCT(seqtuple); + + /* + * Verbose syntax + * + * CREATE %{persistence}s SEQUENCE %{identity}D + */ + createSeq = new_objtree("CREATE"); + + append_string_object(createSeq, "%{persistence}s", + get_persistence_str(relation->rd_rel->relpersistence)); + + tmpobj = new_objtree_for_qualname(relation->rd_rel->relnamespace, + RelationGetRelationName(relation)); + append_object_object(createSeq, "SEQUENCE %{identity}D", tmpobj); + + /* Definition elements */ + elems = lappend(elems, deparse_Seq_Cache(createSeq, seqform, false)); + elems = lappend(elems, deparse_Seq_Cycle(createSeq, seqform, false)); + elems = lappend(elems, deparse_Seq_IncrementBy(createSeq, seqform, false)); + elems = lappend(elems, deparse_Seq_Minvalue(createSeq, seqform, false)); + elems = lappend(elems, deparse_Seq_Maxvalue(createSeq, seqform, false)); + elems = lappend(elems, deparse_Seq_Startwith(createSeq, seqform, false)); + elems = lappend(elems, deparse_Seq_Restart(createSeq, seqdata)); + + /* We purposefully do not emit OWNED BY here */ + append_array_object(createSeq, "%{definition: }s", elems); + + table_close(rel, RowExclusiveLock); + relation_close(relation, AccessShareLock); + + return createSeq; +} + +/* + * Deparse a CreateStmt (CREATE TABLE). + * + * Given a table OID and the parse tree that created it, return an ObjTree + * representing the creation command. + */ +static ObjTree * +deparse_CreateStmt(Oid objectId, Node *parsetree) +{ + CreateStmt *node = (CreateStmt *) parsetree; + Relation relation = relation_open(objectId, AccessShareLock); + List *dpcontext; + ObjTree *createStmt; + ObjTree *tmpobj; + List *list = NIL; + ListCell *cell; + + /* + * Verbose syntax + * + * CREATE %{persistence}s TABLE %{if_not_exists}s %{identity}D [OF + * %{of_type}T | PARTITION OF %{parent_identity}D] %{table_elements}s + * %{inherits}s %{partition_by}s %{access_method}s %{with_clause}s + * %{on_commit}s %{tablespace}s + */ + createStmt = new_objtree("CREATE"); + + append_string_object(createStmt, "%{persistence}s", + get_persistence_str(relation->rd_rel->relpersistence)); + + append_format_string(createStmt, "TABLE"); + + append_string_object(createStmt, "%{if_not_exists}s", + node->if_not_exists ? "IF NOT EXISTS" : ""); + + tmpobj = new_objtree_for_qualname(relation->rd_rel->relnamespace, + RelationGetRelationName(relation)); + append_object_object(createStmt, "%{identity}D", tmpobj); + + dpcontext = deparse_context_for(RelationGetRelationName(relation), + objectId); + + /* + * Typed tables and partitions use a slightly different format string: we + * must not put table_elements with parents directly in the fmt string, + * because if there are no options the parentheses must not be emitted; + * and also, typed tables do not allow for inheritance. + */ + if (node->ofTypename || node->partbound) + { + List *tableelts = NIL; + + /* + * We can't put table elements directly in the fmt string as an array + * surrounded by parentheses here, because an empty clause would cause + * a syntax error. Therefore, we use an indirection element and set + * present=false when there are no elements. + */ + if (node->ofTypename) + { + tmpobj = new_objtree_for_type(relation->rd_rel->reloftype, -1); + append_object_object(createStmt, "OF %{of_type}T", tmpobj); + } + else + { + List *parents; + ObjElem *elem; + + parents = deparse_InhRelations(objectId); + elem = (ObjElem *) linitial(parents); + + Assert(list_length(parents) == 1); + + append_format_string(createStmt, "PARTITION OF"); + + append_object_object(createStmt, "%{parent_identity}D", + elem->value.object); + } + + tableelts = deparse_TableElements(relation, node->tableElts, dpcontext, + true, /* typed table */ + false); /* not composite */ + tableelts = obtainConstraints(tableelts, objectId, InvalidOid); + + if (tableelts == NIL) + { + tmpobj = new_objtree(""); + append_bool_object(tmpobj, "present", false); + } + else + tmpobj = new_objtree_VA("(%{elements:, }s)", 1, + "elements", ObjTypeArray, tableelts); + + append_object_object(createStmt, "%{table_elements}s", tmpobj); + } + else + { + List *tableelts = NIL; + + /* + * There is no need to process LIKE clauses separately; they have + * already been transformed into columns and constraints. + */ + + /* + * Process table elements: column definitions and constraints. Only + * the column definitions are obtained from the parse node itself. To + * get constraints we rely on pg_constraint, because the parse node + * might be missing some things such as the name of the constraints. + */ + tableelts = deparse_TableElements(relation, node->tableElts, dpcontext, + false, /* not typed table */ + false); /* not composite */ + tableelts = obtainConstraints(tableelts, objectId, InvalidOid); + + append_array_object(createStmt, "(%{table_elements:, }s)", tableelts); + + /* + * Add inheritance specification. We cannot simply scan the list of + * parents from the parser node, because that may lack the actual + * qualified names of the parent relations. Rather than trying to + * re-resolve them from the information in the parse node, it seems + * more accurate and convenient to grab it from pg_inherits. + */ + tmpobj = new_objtree("INHERITS"); + if (list_length(node->inhRelations) > 0) + append_array_object(tmpobj, "(%{parents:, }D)", deparse_InhRelations(objectId)); + else + { + append_null_object(tmpobj, "(%{parents:, }D)"); + append_bool_object(tmpobj, "present", false); + } + append_object_object(createStmt, "%{inherits}s", tmpobj); + } + + tmpobj = new_objtree("TABLESPACE"); + if (node->tablespacename) + append_string_object(tmpobj, "%{tablespace}I", node->tablespacename); + else + { + append_null_object(tmpobj, "%{tablespace}I"); + append_bool_object(tmpobj, "present", false); + } + append_object_object(createStmt, "%{tablespace}s", tmpobj); + append_object_object(createStmt, "%{on_commit}s", + deparse_OnCommitClause(node->oncommit)); + + /* FOR VALUES clause */ + if (node->partbound) + { + /* + * Get pg_class.relpartbound. We cannot use partbound in the parsetree + * directly as it's the original partbound expression which haven't + * been transformed. + */ + append_string_object(createStmt, "%{partition_bound}s", + RelationGetPartitionBound(objectId)); + } + + /* PARTITION BY clause */ + tmpobj = new_objtree("PARTITION BY"); + if (relation->rd_rel->relkind == RELKIND_PARTITIONED_TABLE) + append_string_object(tmpobj, "%{definition}s", pg_get_partkeydef_simple(objectId)); + else + { + append_null_object(tmpobj, "%{definition}s"); + append_bool_object(tmpobj, "present", false); + } + append_object_object(createStmt, "%{partition_by}s", tmpobj); + + /* USING clause */ + tmpobj = new_objtree("USING"); + if (node->accessMethod) + append_string_object(tmpobj, "%{access_method}I", node->accessMethod); + else + { + append_null_object(tmpobj, "%{access_method}I"); + append_bool_object(tmpobj, "present", false); + } + append_object_object(createStmt, "%{access_method}s", tmpobj); + + /* WITH clause */ + tmpobj = new_objtree("WITH"); + + foreach(cell, node->options) + { + ObjTree *tmpobj2; + DefElem *opt = (DefElem *) lfirst(cell); + + tmpobj2 = deparse_DefElem(opt, false); + list = lappend(list, new_object_object(tmpobj2)); + } + + if (list) + append_array_object(tmpobj, "(%{with:, }s)", list); + else + append_bool_object(tmpobj, "present", false); + + append_object_object(createStmt, "%{with_clause}s", tmpobj); + + relation_close(relation, AccessShareLock); + + return createStmt; +} + +/* + * Deparse a DefineStmt. + */ +static ObjTree * +deparse_DefineStmt(Oid objectId, Node *parsetree, ObjectAddress secondaryObj) +{ + DefineStmt *define = (DefineStmt *) parsetree; + ObjTree *defStmt = NULL; + + switch (define->kind) + { + case OBJECT_COLLATION: + defStmt = deparse_DefineStmt_Collation(objectId, define, secondaryObj); + break; + + case OBJECT_OPERATOR: + defStmt = deparse_DefineStmt_Operator(objectId, define); + break; + + case OBJECT_TYPE: + defStmt = deparse_DefineStmt_Type(objectId, define); + break; + + case OBJECT_TSCONFIGURATION: + defStmt = deparse_DefineStmt_TSConfig(objectId, define, secondaryObj); + break; + + case OBJECT_TSPARSER: + defStmt = deparse_DefineStmt_TSParser(objectId, define); + break; + + case OBJECT_TSDICTIONARY: + defStmt = deparse_DefineStmt_TSDictionary(objectId, define); + break; + + case OBJECT_TSTEMPLATE: + defStmt = deparse_DefineStmt_TSTemplate(objectId, define); + break; + + default: + elog(ERROR, "unsupported object kind"); + } + + return defStmt; +} + +/* + * Deparse a DefineStmt (CREATE COLLATION) + * + * Given a collation OID, return the JSON blob representing the alter command. + */ +static ObjTree * +deparse_DefineStmt_Collation(Oid objectId, DefineStmt *define, + ObjectAddress fromCollid) +{ + ObjTree *stmt; + HeapTuple colTup; + Form_pg_collation colForm; + Datum datum; + bool isnull; + ObjTree *tmp; + List *list = NIL; + + colTup = SearchSysCache1(COLLOID, ObjectIdGetDatum(objectId)); + if (!HeapTupleIsValid(colTup)) + elog(ERROR, "cache lookup failed for collation with OID %u", objectId); + colForm = (Form_pg_collation) GETSTRUCT(colTup); + + stmt = new_objtree_VA("CREATE COLLATION", 0); + + append_object_object(stmt, "%{identity}D", + new_objtree_for_qualname(colForm->collnamespace, + NameStr(colForm->collname))); + + if (fromCollid.objectId != InvalidOid) + { + Oid collid = fromCollid.objectId; + HeapTuple tp; + Form_pg_collation fromColForm; + + /* + * CREATE COLLATION %{identity}D FROM existing_collation; + */ + tp = SearchSysCache1(COLLOID, ObjectIdGetDatum(collid)); + if (!HeapTupleIsValid(tp)) + elog(ERROR, "cache lookup failed for collation %u", collid); + + fromColForm = (Form_pg_collation) GETSTRUCT(tp); + + append_object_object(stmt, "FROM %{from_identity}D", + new_objtree_for_qualname(fromColForm->collnamespace, + NameStr(fromColForm->collname))); + + + ReleaseSysCache(tp); + ReleaseSysCache(colTup); + return stmt; + } + + /* LOCALE */ + datum = SysCacheGetAttr(COLLOID, colTup, Anum_pg_collation_colliculocale, &isnull); + if (!isnull) + { + tmp = new_objtree_VA("LOCALE=", 1, + "clause", ObjTypeString, "locale"); + append_string_object(tmp, "%{locale}L", + psprintf("%s", TextDatumGetCString(datum))); + list = lappend(list, new_object_object(tmp)); + } + + /* LC_COLLATE */ + datum = SysCacheGetAttr(COLLOID, colTup, Anum_pg_collation_collcollate, &isnull); + if (!isnull) + { + tmp = new_objtree_VA("LC_COLLATE=", 1, + "clause", ObjTypeString, "collate"); + append_string_object(tmp, "%{collate}L", + psprintf("%s", TextDatumGetCString(datum))); + list = lappend(list, new_object_object(tmp)); + } + + /* LC_CTYPE */ + datum = SysCacheGetAttr(COLLOID, colTup, Anum_pg_collation_collctype, &isnull); + if (!isnull) + { + tmp = new_objtree_VA("LC_CTYPE=", 1, + "clause", ObjTypeString, "ctype"); + append_string_object(tmp, "%{ctype}L", + psprintf("%s", TextDatumGetCString(datum))); + list = lappend(list, new_object_object(tmp)); + } + + /* PROVIDER */ + if (colForm->collprovider == COLLPROVIDER_ICU) + { + tmp = new_objtree_VA("PROVIDER=", 1, + "clause", ObjTypeString, "provider"); + append_string_object(tmp, "%{provider}L", + psprintf("%s", "icu")); + list = lappend(list, new_object_object(tmp)); + } + else if (colForm->collprovider == COLLPROVIDER_LIBC) + { + tmp = new_objtree_VA("PROVIDER=", 1, + "clause", ObjTypeString, "provider"); + append_string_object(tmp, "%{provider}L", + psprintf("%s", "libc")); + list = lappend(list, new_object_object(tmp)); + } + + /* DETERMINISTIC */ + if (colForm->collisdeterministic) + { + tmp = new_objtree_VA("DETERMINISTIC=", 1, + "clause", ObjTypeString, "deterministic"); + append_string_object(tmp, "%{deterministic}L", + psprintf("%s", "true")); + list = lappend(list, new_object_object(tmp)); + } + + /* VERSION */ + datum = SysCacheGetAttr(COLLOID, colTup, Anum_pg_collation_collversion, &isnull); + if (!isnull) + { + tmp = new_objtree_VA("VERSION=", 1, + "clause", ObjTypeString, "version"); + append_string_object(tmp, "%{version}L", + psprintf("%s", TextDatumGetCString(datum))); + list = lappend(list, new_object_object(tmp)); + } + + append_array_object(stmt, "(%{elems:, }s)", list); + ReleaseSysCache(colTup); + + return stmt; +} + +/* + * Deparse a DefineStmt (CREATE OPERATOR) + * + * Given a trigger OID and the parse tree that created it, return an ObjTree + * representing the creation command. + */ +static ObjTree * +deparse_DefineStmt_Operator(Oid objectId, DefineStmt *define) +{ + HeapTuple oprTup; + ObjTree *stmt; + ObjTree *tmpobj; + List *list = NIL; + Form_pg_operator oprForm; + + oprTup = SearchSysCache1(OPEROID, ObjectIdGetDatum(objectId)); + if (!HeapTupleIsValid(oprTup)) + elog(ERROR, "cache lookup failed for operator with OID %u", objectId); + oprForm = (Form_pg_operator) GETSTRUCT(oprTup); + + stmt = new_objtree_VA("CREATE OPERATOR %{identity}O", 1, + "identity", ObjTypeObject, + new_objtree_for_qualname(oprForm->oprnamespace, + NameStr(oprForm->oprname))); + + /* PROCEDURE */ + tmpobj = new_objtree_VA("PROCEDURE=%{procedure}D", 2, + "clause", ObjTypeString, "procedure", + "procedure", ObjTypeObject, + new_objtree_for_qualname_id(ProcedureRelationId, + oprForm->oprcode)); + list = lappend(list, new_object_object(tmpobj)); + + /* LEFTARG */ + tmpobj = new_objtree_VA("LEFTARG=", 1, + "clause", ObjTypeString, "leftarg"); + if (OidIsValid(oprForm->oprleft)) + append_object_object(tmpobj, "%{type}T", + new_objtree_for_type(oprForm->oprleft, -1)); + else + append_bool_object(tmpobj, "present", false); + list = lappend(list, new_object_object(tmpobj)); + + /* RIGHTARG */ + tmpobj = new_objtree_VA("RIGHTARG=", 1, + "clause", ObjTypeString, "rightarg"); + if (OidIsValid(oprForm->oprright)) + append_object_object(tmpobj, "%{type}T", + new_objtree_for_type(oprForm->oprright, -1)); + else + append_bool_object(tmpobj, "present", false); + list = lappend(list, new_object_object(tmpobj)); + + /* COMMUTATOR */ + tmpobj = new_objtree_VA("COMMUTATOR=", 1, + "clause", ObjTypeString, "commutator"); + if (OidIsValid(oprForm->oprcom)) + append_object_object(tmpobj, "%{oper}D", + new_objtree_for_qualname_id(OperatorRelationId, + oprForm->oprcom)); + else + append_bool_object(tmpobj, "present", false); + list = lappend(list, new_object_object(tmpobj)); + + /* NEGATOR */ + tmpobj = new_objtree_VA("NEGATOR=", 1, + "clause", ObjTypeString, "negator"); + if (OidIsValid(oprForm->oprnegate)) + append_object_object(tmpobj, "%{oper}D", + new_objtree_for_qualname_id(OperatorRelationId, + oprForm->oprnegate)); + else + append_bool_object(tmpobj, "present", false); + list = lappend(list, new_object_object(tmpobj)); + + /* RESTRICT */ + tmpobj = new_objtree_VA("RESTRICT=", 1, + "clause", ObjTypeString, "restrict"); + if (OidIsValid(oprForm->oprrest)) + append_object_object(tmpobj, "%{procedure}D", + new_objtree_for_qualname_id(ProcedureRelationId, + oprForm->oprrest)); + else + append_bool_object(tmpobj, "present", false); + list = lappend(list, new_object_object(tmpobj)); + + /* JOIN */ + tmpobj = new_objtree_VA("JOIN=", 1, + "clause", ObjTypeString, "join"); + if (OidIsValid(oprForm->oprjoin)) + append_object_object(tmpobj, "%{procedure}D", + new_objtree_for_qualname_id(ProcedureRelationId, + oprForm->oprjoin)); + else + append_bool_object(tmpobj, "present", false); + list = lappend(list, new_object_object(tmpobj)); + + /* MERGES */ + tmpobj = new_objtree_VA("MERGES", 1, + "clause", ObjTypeString, "merges"); + if (!oprForm->oprcanmerge) + append_bool_object(tmpobj, "present", false); + list = lappend(list, new_object_object(tmpobj)); + + /* HASHES */ + tmpobj = new_objtree_VA("HASHES", 1, + "clause", ObjTypeString, "hashes"); + if (!oprForm->oprcanhash) + append_bool_object(tmpobj, "present", false); + list = lappend(list, new_object_object(tmpobj)); + + append_array_object(stmt, "(%{elems:, }s)", list); + + ReleaseSysCache(oprTup); + + return stmt; +} + +/* + * Deparse a CREATE TYPE statement. + */ +static ObjTree * +deparse_DefineStmt_Type(Oid objectId, DefineStmt *define) +{ + HeapTuple typTup; + ObjTree *stmt; + ObjTree *tmp; + List *list; + char *str; + Datum dflt; + bool isnull; + Form_pg_type typForm; + + typTup = SearchSysCache1(TYPEOID, ObjectIdGetDatum(objectId)); + if (!HeapTupleIsValid(typTup)) + elog(ERROR, "cache lookup failed for type with OID %u", objectId); + typForm = (Form_pg_type) GETSTRUCT(typTup); + + /* Shortcut processing for shell types. */ + if (!typForm->typisdefined) + { + stmt = new_objtree_VA("CREATE TYPE", 0); + append_object_object(stmt, "%{identity}D", + new_objtree_for_qualname(typForm->typnamespace, + NameStr(typForm->typname))); + append_bool_object(stmt, "present", true); + ReleaseSysCache(typTup); + return stmt; + } + + stmt = new_objtree_VA("CREATE TYPE", 0); + append_object_object(stmt, "%{identity}D", + new_objtree_for_qualname(typForm->typnamespace, + NameStr(typForm->typname))); + append_bool_object(stmt, "present", true); + + /* Add the definition clause */ + list = NIL; + + /* INPUT */ + tmp = new_objtree_VA("(INPUT=", 1, + "clause", ObjTypeString, "input"); + append_object_object(tmp, "%{procedure}D", + new_objtree_for_qualname_id(ProcedureRelationId, + typForm->typinput)); + list = lappend(list, new_object_object(tmp)); + + /* OUTPUT */ + tmp = new_objtree_VA("OUTPUT=", 1, + "clause", ObjTypeString, "output"); + append_object_object(tmp, "%{procedure}D", + new_objtree_for_qualname_id(ProcedureRelationId, + typForm->typoutput)); + list = lappend(list, new_object_object(tmp)); + + /* RECEIVE */ + tmp = new_objtree_VA("RECEIVE=", 1, + "clause", ObjTypeString, "receive"); + if (OidIsValid(typForm->typreceive)) + append_object_object(tmp, "%{procedure}D", + new_objtree_for_qualname_id(ProcedureRelationId, + typForm->typreceive)); + else + append_bool_object(tmp, "present", false); + list = lappend(list, new_object_object(tmp)); + + /* SEND */ + tmp = new_objtree_VA("SEND=", 1, + "clause", ObjTypeString, "send"); + if (OidIsValid(typForm->typsend)) + append_object_object(tmp, "%{procedure}D", + new_objtree_for_qualname_id(ProcedureRelationId, + typForm->typsend)); + else + append_bool_object(tmp, "present", false); + list = lappend(list, new_object_object(tmp)); + + /* TYPMOD_IN */ + tmp = new_objtree_VA("TYPMOD_IN=", 1, + "clause", ObjTypeString, "typmod_in"); + if (OidIsValid(typForm->typmodin)) + append_object_object(tmp, "%{procedure}D", + new_objtree_for_qualname_id(ProcedureRelationId, + typForm->typmodin)); + else + append_bool_object(tmp, "present", false); + list = lappend(list, new_object_object(tmp)); + + /* TYPMOD_OUT */ + tmp = new_objtree_VA("TYPMOD_OUT=", 1, + "clause", ObjTypeString, "typmod_out"); + if (OidIsValid(typForm->typmodout)) + append_object_object(tmp, "%{procedure}D", + new_objtree_for_qualname_id(ProcedureRelationId, + typForm->typmodout)); + else + append_bool_object(tmp, "present", false); + list = lappend(list, new_object_object(tmp)); + + /* ANALYZE */ + tmp = new_objtree_VA("ANALYZE=", 1, + "clause", ObjTypeString, "analyze"); + if (OidIsValid(typForm->typanalyze)) + append_object_object(tmp, "%{procedure}D", + new_objtree_for_qualname_id(ProcedureRelationId, + typForm->typanalyze)); + else + append_bool_object(tmp, "present", false); + list = lappend(list, new_object_object(tmp)); + + /* INTERNALLENGTH */ + if (typForm->typlen == -1) + { + tmp = new_objtree_VA("INTERNALLENGTH=VARIABLE", 0); + } + else + { + tmp = new_objtree_VA("INTERNALLENGTH=%{typlen}n", 1, + "typlen", ObjTypeInteger, typForm->typlen); + } + + list = lappend(list, new_object_object(tmp)); + + /* PASSEDBYVALUE */ + tmp = new_objtree_VA("PASSEDBYVALUE", 1, + "clause", ObjTypeString, "passedbyvalue"); + if (!typForm->typbyval) + append_bool_object(tmp, "present", false); + list = lappend(list, new_object_object(tmp)); + + /* ALIGNMENT */ + tmp = new_objtree_VA("ALIGNMENT=", 1, + "clause", ObjTypeString, "alignment"); + /* XXX it's odd to represent alignment with schema-qualified type names */ + switch (typForm->typalign) + { + case 'd': + str = "pg_catalog.float8"; + break; + case 'i': + str = "pg_catalog.int4"; + break; + case 's': + str = "pg_catalog.int2"; + break; + case 'c': + str = "pg_catalog.bpchar"; + break; + default: + elog(ERROR, "invalid alignment %c", typForm->typalign); + } + append_string_object(tmp, "%{align}s", str); + list = lappend(list, new_object_object(tmp)); + + tmp = new_objtree_VA("STORAGE=", 1, + "clause", ObjTypeString, "storage"); + switch (typForm->typstorage) + { + case 'p': + str = "plain"; + break; + case 'e': + str = "external"; + break; + case 'x': + str = "extended"; + break; + case 'm': + str = "main"; + break; + default: + elog(ERROR, "invalid storage specifier %c", typForm->typstorage); + } + append_string_object(tmp, "%{storage}s", str); + list = lappend(list, new_object_object(tmp)); + + /* CATEGORY */ + tmp = new_objtree_VA("CATEGORY=", 1, + "clause", ObjTypeString, "category"); + append_string_object(tmp, "%{category}s", + psprintf("%c", typForm->typcategory)); + list = lappend(list, new_object_object(tmp)); + + /* PREFERRED */ + tmp = new_objtree_VA("PREFERRED=", 1, + "clause", ObjTypeString, "preferred"); + if (!typForm->typispreferred) + append_bool_object(tmp, "present", false); + list = lappend(list, new_object_object(tmp)); + + /* DEFAULT */ + dflt = SysCacheGetAttr(TYPEOID, typTup, + Anum_pg_type_typdefault, + &isnull); + tmp = new_objtree_VA("DEFAULT=", 1, + "clause", ObjTypeString, "default"); + if (!isnull) + append_string_object(tmp, "%{default}s", TextDatumGetCString(dflt)); + else + append_bool_object(tmp, "present", false); + list = lappend(list, new_object_object(tmp)); + + /* ELEMENT */ + tmp = new_objtree_VA("ELEMENT=", 1, + "clause", ObjTypeString, "element"); + if (OidIsValid(typForm->typelem)) + append_object_object(tmp, "elem", + new_objtree_for_type(typForm->typelem, -1)); + else + append_bool_object(tmp, "present", false); + list = lappend(list, new_object_object(tmp)); + + /* DELIMITER */ + tmp = new_objtree_VA("DELIMITER=", 1, + "clause", ObjTypeString, "delimiter"); + append_string_object(tmp, "%{delim}L", + psprintf("%c", typForm->typdelim)); + list = lappend(list, new_object_object(tmp)); + + /* COLLATABLE */ + tmp = new_objtree_VA("COLLATABLE=", 1, + "clause", ObjTypeString, "collatable"); + if (!OidIsValid(typForm->typcollation)) + append_bool_object(tmp, "present", false); + list = lappend(list, new_object_object(tmp)); + + append_array_object(stmt, "%{elems:, }s)", list); + + ReleaseSysCache(typTup); + + return stmt; +} + +static ObjTree * +deparse_DefineStmt_TSConfig(Oid objectId, DefineStmt *define, + ObjectAddress copied) +{ + HeapTuple tscTup; + HeapTuple tspTup; + ObjTree *stmt; + ObjTree *tmp; + Form_pg_ts_config tscForm; + Form_pg_ts_parser tspForm; + List *list; + + tscTup = SearchSysCache1(TSCONFIGOID, ObjectIdGetDatum(objectId)); + if (!HeapTupleIsValid(tscTup)) + elog(ERROR, "cache lookup failed for text search configuration %u", + objectId); + tscForm = (Form_pg_ts_config) GETSTRUCT(tscTup); + + tspTup = SearchSysCache1(TSPARSEROID, ObjectIdGetDatum(tscForm->cfgparser)); + if (!HeapTupleIsValid(tspTup)) + elog(ERROR, "cache lookup failed for text search parser %u", + tscForm->cfgparser); + tspForm = (Form_pg_ts_parser) GETSTRUCT(tspTup); + + /* + * Verbose syntax + * + * CREATE TEXT SEARCH CONFIGURATION %{identity}D (%{elems:, }s) + */ + stmt = new_objtree("CREATE"); + + append_object_object(stmt, "TEXT SEARCH CONFIGURATION %{identity}D", + new_objtree_for_qualname(tscForm->cfgnamespace, + NameStr(tscForm->cfgname))); + + /* + * Add the definition clause. If we have COPY'ed an existing config, add + * a COPY clause; otherwise add a PARSER clause. + */ + list = NIL; + /* COPY */ + tmp = new_objtree_VA("COPY=", 1, + "clause", ObjTypeString, "copy"); + if (copied.objectId != InvalidOid) + append_object_object(tmp, "%{tsconfig}D", + new_objtree_for_qualname_id(TSConfigRelationId, + copied.objectId)); + else + append_bool_object(tmp, "present", false); + list = lappend(list, new_object_object(tmp)); + + /* PARSER */ + tmp = new_objtree_VA("PARSER=", 1, + "clause", ObjTypeString, "parser"); + if (copied.objectId == InvalidOid) + append_object_object(tmp, "%{parser}D", + new_objtree_for_qualname(tspForm->prsnamespace, + NameStr(tspForm->prsname))); + else + append_bool_object(tmp, "present", false); + list = lappend(list, new_object_object(tmp)); + + append_array_object(stmt, "(%{elems:, }s)", list); + + ReleaseSysCache(tspTup); + ReleaseSysCache(tscTup); + + return stmt; +} + +static ObjTree * +deparse_DefineStmt_TSParser(Oid objectId, DefineStmt *define) +{ + HeapTuple tspTup; + ObjTree *stmt; + ObjTree *tmp; + List *list; + Form_pg_ts_parser tspForm; + + tspTup = SearchSysCache1(TSPARSEROID, ObjectIdGetDatum(objectId)); + if (!HeapTupleIsValid(tspTup)) + elog(ERROR, "cache lookup failed for text search parser with OID %u", + objectId); + tspForm = (Form_pg_ts_parser) GETSTRUCT(tspTup); + + /* + * Verbose syntax + * + * CREATE TEXT SEARCH PARSER %{identity}D (%{elems:, }s) + */ + stmt = new_objtree("CREATE"); + + append_object_object(stmt, "TEXT SEARCH PARSER %{identity}D", + new_objtree_for_qualname(tspForm->prsnamespace, + NameStr(tspForm->prsname))); + + /* Add the definition clause */ + list = NIL; + + /* START */ + tmp = new_objtree_VA("START=", 1, + "clause", ObjTypeString, "start"); + append_object_object(tmp, "%{procedure}D", + new_objtree_for_qualname_id(ProcedureRelationId, + tspForm->prsstart)); + list = lappend(list, new_object_object(tmp)); + + /* GETTOKEN */ + tmp = new_objtree_VA("GETTOKEN=", 1, + "clause", ObjTypeString, "gettoken"); + append_object_object(tmp, "%{procedure}D", + new_objtree_for_qualname_id(ProcedureRelationId, + tspForm->prstoken)); + list = lappend(list, new_object_object(tmp)); + + /* END */ + tmp = new_objtree_VA("END=", 1, + "clause", ObjTypeString, "end"); + append_object_object(tmp, "%{procedure}D", + new_objtree_for_qualname_id(ProcedureRelationId, + tspForm->prsend)); + list = lappend(list, new_object_object(tmp)); + + /* LEXTYPES */ + tmp = new_objtree_VA("LEXTYPES=", 1, + "clause", ObjTypeString, "lextypes"); + append_object_object(tmp, "%{procedure}D", + new_objtree_for_qualname_id(ProcedureRelationId, + tspForm->prslextype)); + list = lappend(list, new_object_object(tmp)); + + /* HEADLINE */ + tmp = new_objtree_VA("HEADLINE=", 1, + "clause", ObjTypeString, "headline"); + if (OidIsValid(tspForm->prsheadline)) + append_object_object(tmp, "%{procedure}D", + new_objtree_for_qualname_id(ProcedureRelationId, + tspForm->prsheadline)); + else + append_bool_object(tmp, "present", false); + list = lappend(list, new_object_object(tmp)); + + append_array_object(stmt, "(%{elems:, }s)", list); + + ReleaseSysCache(tspTup); + + return stmt; +} + +static ObjTree * +deparse_DefineStmt_TSDictionary(Oid objectId, DefineStmt *define) +{ + HeapTuple tsdTup; + ObjTree *stmt; + ObjTree *tmp; + List *list; + Datum options; + bool isnull; + Form_pg_ts_dict tsdForm; + + tsdTup = SearchSysCache1(TSDICTOID, ObjectIdGetDatum(objectId)); + if (!HeapTupleIsValid(tsdTup)) + elog(ERROR, "cache lookup failed for text search dictionary " + "with OID %u", objectId); + tsdForm = (Form_pg_ts_dict) GETSTRUCT(tsdTup); + + /* + * Verbose syntax + * + * CREATE TEXT SEARCH DICTIONARY %{identity}D (%{elems:, }s) + */ + stmt = new_objtree("CREATE"); + + append_object_object(stmt, "TEXT SEARCH DICTIONARY %{identity}D", + new_objtree_for_qualname(tsdForm->dictnamespace, + NameStr(tsdForm->dictname))); + + /* Add the definition clause */ + list = NIL; + + /* TEMPLATE */ + tmp = new_objtree_VA("TEMPLATE=", 1, + "clause", ObjTypeString, "template"); + append_object_object(tmp, "%{template}D", + new_objtree_for_qualname_id(TSTemplateRelationId, + tsdForm->dicttemplate)); + list = lappend(list, new_object_object(tmp)); + + /* + * options. XXX this is a pretty useless representation, but we can't do + * better without more ts_cache.c cooperation ... + */ + options = SysCacheGetAttr(TSDICTOID, tsdTup, + Anum_pg_ts_dict_dictinitoption, + &isnull); + tmp = new_objtree_VA("", 0); + if (!isnull) + append_string_object(tmp, "%{options}s", TextDatumGetCString(options)); + else + append_bool_object(tmp, "present", false); + list = lappend(list, new_object_object(tmp)); + + append_array_object(stmt, "(%{elems:, }s)", list); + + ReleaseSysCache(tsdTup); + + return stmt; +} + +static ObjTree * +deparse_DefineStmt_TSTemplate(Oid objectId, DefineStmt *define) +{ + HeapTuple tstTup; + ObjTree *stmt; + ObjTree *tmp; + List *list; + Form_pg_ts_template tstForm; + + tstTup = SearchSysCache1(TSTEMPLATEOID, ObjectIdGetDatum(objectId)); + if (!HeapTupleIsValid(tstTup)) + elog(ERROR, "cache lookup failed for text search template with OID %u", + objectId); + tstForm = (Form_pg_ts_template) GETSTRUCT(tstTup); + + /* + * Verbose syntax + * + * CREATE TEXT SEARCH TEMPLATE %{identity}D (%{elems:, }s) + */ + stmt = new_objtree("CREATE"); + + append_object_object(stmt, "TEXT SEARCH TEMPLATE %{identity}D", + new_objtree_for_qualname(tstForm->tmplnamespace, + NameStr(tstForm->tmplname))); + + /* Add the definition clause */ + list = NIL; + + /* INIT */ + tmp = new_objtree_VA("INIT=", 1, + "clause", ObjTypeString, "init"); + if (OidIsValid(tstForm->tmplinit)) + append_object_object(tmp, "%{procedure}D", + new_objtree_for_qualname_id(ProcedureRelationId, + tstForm->tmplinit)); + else + append_bool_object(tmp, "present", false); + list = lappend(list, new_object_object(tmp)); + + /* LEXIZE */ + tmp = new_objtree_VA("LEXIZE=", 1, + "clause", ObjTypeString, "lexize"); + append_object_object(tmp, "%{procedure}D", + new_objtree_for_qualname_id(ProcedureRelationId, + tstForm->tmpllexize)); + list = lappend(list, new_object_object(tmp)); + + append_array_object(stmt, "(%{elems:, }s)", list); + + ReleaseSysCache(tstTup); + + return stmt; +} + +static ObjTree * +deparse_AlterTSConfigurationStmt(CollectedCommand *cmd) +{ + AlterTSConfigurationStmt *node = (AlterTSConfigurationStmt *) cmd->parsetree; + ObjTree *config; + ObjTree *tmp; + List *list; + ListCell *cell; + int i; + + /* + * Verbose syntax + * case ALTER_TSCONFIG_ADD_MAPPING: + * ALTER TEXT SEARCH CONFIGURATION %{identity}D ADD MAPPING + * FOR %{tokentype:, }I WITH %{dictionaries:, }D + * + * case ALTER_TSCONFIG_DROP_MAPPING: + * ALTER TEXT SEARCH CONFIGURATION %{identity}D DROP MAPPING %{if_exists}s + * FOR %{tokentype}I + * + * case ALTER_TSCONFIG_ALTER_MAPPING_FOR_TOKEN: + * ALTER TEXT SEARCH CONFIGURATION %{identity}D ALTER MAPPING + * FOR %{tokentype:, }I WITH %{dictionaries:, }D + * + * case ALTER_TSCONFIG_REPLACE_DICT: + * ALTER TEXT SEARCH CONFIGURATION %{identity}D ALTER MAPPING + * REPLACE %{old_dictionary}D WITH %{new_dictionary}D + * + * case ALTER_TSCONFIG_REPLACE_DICT_FOR_TOKEN: + * ALTER TEXT SEARCH CONFIGURATION %{identity}D ALTER MAPPING + * FOR %{tokentype:, }I REPLACE %{old_dictionary}D + * WITH %{new_dictionary}D + */ + + config = new_objtree("ALTER TEXT SEARCH CONFIGURATION"); + + /* determine the format string appropriate to each subcommand */ + switch (node->kind) + { + case ALTER_TSCONFIG_ADD_MAPPING: + append_object_object(config, "%{identity}D ADD MAPPING", + new_objtree_for_qualname_id(cmd->d.atscfg.address.classId, + cmd->d.atscfg.address.objectId)); + break; + + case ALTER_TSCONFIG_DROP_MAPPING: + append_object_object(config, "%{identity}D DROP MAPPING", + new_objtree_for_qualname_id(cmd->d.atscfg.address.classId, + cmd->d.atscfg.address.objectId)); + tmp = new_objtree_VA("IF EXISTS", 0); + append_bool_object(tmp, "present", node->missing_ok); + append_object_object(config, "%{if_exists}s", tmp); + break; + + case ALTER_TSCONFIG_ALTER_MAPPING_FOR_TOKEN: + append_object_object(config, "%{identity}D ALTER MAPPING", + new_objtree_for_qualname_id(cmd->d.atscfg.address.classId, + cmd->d.atscfg.address.objectId)); + break; + + case ALTER_TSCONFIG_REPLACE_DICT: + append_object_object(config, "%{identity}D ALTER MAPPING", + new_objtree_for_qualname_id(cmd->d.atscfg.address.classId, + cmd->d.atscfg.address.objectId)); + break; + + case ALTER_TSCONFIG_REPLACE_DICT_FOR_TOKEN: + append_object_object(config, "%{identity}D ALTER MAPPING", + new_objtree_for_qualname_id(cmd->d.atscfg.address.classId, + cmd->d.atscfg.address.objectId)); + break; + } + + /* Add the affected token list, for subcommands that have one */ + if (node->kind == ALTER_TSCONFIG_ADD_MAPPING || + node->kind == ALTER_TSCONFIG_ALTER_MAPPING_FOR_TOKEN || + node->kind == ALTER_TSCONFIG_REPLACE_DICT_FOR_TOKEN || + node->kind == ALTER_TSCONFIG_DROP_MAPPING) + { + list = NIL; + foreach(cell, node->tokentype) + list = lappend(list, new_string_object(strVal(lfirst(cell)))); + append_array_object(config, "FOR %{tokentype:, }I", list); + } + + /* add further subcommand-specific elements */ + if (node->kind == ALTER_TSCONFIG_ADD_MAPPING || + node->kind == ALTER_TSCONFIG_ALTER_MAPPING_FOR_TOKEN) + { + /* ADD MAPPING and ALTER MAPPING FOR need a list of dictionaries */ + list = NIL; + for (i = 0; i < cmd->d.atscfg.ndicts; i++) + { + ObjTree *dictobj; + + dictobj = new_objtree_for_qualname_id(TSDictionaryRelationId, + cmd->d.atscfg.dictIds[i]); + list = lappend(list, + new_object_object(dictobj)); + } + append_array_object(config, "WITH %{dictionaries:, }D", list); + } + else if (node->kind == ALTER_TSCONFIG_REPLACE_DICT || + node->kind == ALTER_TSCONFIG_REPLACE_DICT_FOR_TOKEN) + { + /* the REPLACE forms want old and new dictionaries */ + Assert(cmd->d.atscfg.ndicts == 2); + append_object_object(config, "REPLACE %{old_dictionary}D", + new_objtree_for_qualname_id(TSDictionaryRelationId, + cmd->d.atscfg.dictIds[0])); + append_object_object(config, "WITH %{new_dictionary}D", + new_objtree_for_qualname_id(TSDictionaryRelationId, + cmd->d.atscfg.dictIds[1])); + } + + return config; +} + +static ObjTree * +deparse_AlterTSDictionaryStmt(Oid objectId, Node *parsetree) +{ + ObjTree *alterTSD; + ObjTree *tmp; + Datum options; + List *definition = NIL; + bool isnull; + HeapTuple tsdTup; + Form_pg_ts_dict tsdForm; + + tsdTup = SearchSysCache1(TSDICTOID, ObjectIdGetDatum(objectId)); + if (!HeapTupleIsValid(tsdTup)) + elog(ERROR, "cache lookup failed for text search dictionary " + "with OID %u", objectId); + tsdForm = (Form_pg_ts_dict) GETSTRUCT(tsdTup); + + /* + * Verbose syntax + * ALTER TEXT SEARCH DICTIONARY %{identity}D (%{definition:, }s) + */ + + alterTSD = new_objtree("ALTER TEXT SEARCH DICTIONARY"); + + append_object_object(alterTSD, "%{identity}D", + new_objtree_for_qualname(tsdForm->dictnamespace, + NameStr(tsdForm->dictname))); + + /* + * Add the definition list according to the pg_ts_dict dictinitoption + * column + */ + options = SysCacheGetAttr(TSDICTOID, tsdTup, + Anum_pg_ts_dict_dictinitoption, + &isnull); + tmp = new_objtree_VA("", 0); + if (!isnull) + append_string_object(tmp, "%{options}s", TextDatumGetCString(options)); + else + append_bool_object(tmp, "present", false); + + definition = lappend(definition, new_object_object(tmp)); + append_array_object(alterTSD, "(%{definition:, }s)", definition); + ReleaseSysCache(tsdTup); + + return alterTSD; +} + +/* + * ... ALTER COLUMN ... SET/RESET (...) + */ +static ObjTree * +deparse_RelSetOptions(AlterTableCmd *subcmd) +{ + List *sets = NIL; + ListCell *cell; + ObjTree *relset; + char *fmt; + bool is_reset = subcmd->subtype == AT_ResetRelOptions; + + /* + * Verbose syntax + * + * RESET|SET (%{options:, }s) + */ + if (is_reset) + fmt = "RESET "; + else + fmt = "SET "; + + relset = new_objtree(fmt); + + foreach(cell, (List *) subcmd->def) + { + DefElem *elem; + ObjTree *set; + + elem = (DefElem *) lfirst(cell); + set = deparse_DefElem(elem, is_reset); + sets = lappend(sets, new_object_object(set)); + } + + Assert(sets); + append_array_object(relset, "(%{options:, }s)", sets); + + return relset; +} + +/* + * deparse_ViewStmt + * deparse a ViewStmt + * + * Given a view OID and the parsetree that created it, return an ObjTree + * representing the creation command. + */ +static ObjTree * +deparse_ViewStmt(Oid objectId, Node *parsetree) +{ + ViewStmt *node = (ViewStmt *) parsetree; + ObjTree *viewStmt; + ObjTree *tmp; + Relation relation; + + relation = relation_open(objectId, AccessShareLock); + + /* + * Verbose syntax + * + * CREATE %{or_replace}s %{persistence}s VIEW %{identity}D AS %{query}s + */ + viewStmt = new_objtree("CREATE"); + + append_string_object(viewStmt, "%{or_replace}s", + node->replace ? "OR REPLACE" : ""); + + append_string_object(viewStmt, "%{persistence}s", + get_persistence_str(relation->rd_rel->relpersistence)); + + tmp = new_objtree_for_qualname(relation->rd_rel->relnamespace, + RelationGetRelationName(relation)); + + append_object_object(viewStmt, "VIEW %{identity}D", tmp); + + append_string_object(viewStmt, "AS %{query}s", + pg_get_viewdef_internal(objectId)); + + relation_close(relation, AccessShareLock); + + return viewStmt; +} + +/* + * Deparse CREATE Materialized View statement, it is a variant of CreateTableAsStmt + * + * Note that CREATE TABLE AS SELECT INTO can also be deparsed by + * deparse_CreateTableAsStmt to remove the SELECT INTO clause. + */ +static ObjTree * +deparse_CreateTableAsStmt_vanilla(Oid objectId, Node *parsetree) +{ + CreateTableAsStmt *node = (CreateTableAsStmt *) parsetree; + Relation relation = relation_open(objectId, AccessShareLock); + ObjTree *createStmt; + ObjTree *tmp; + ObjTree *tmp2; + char *fmt; + List *list; + ListCell *cell; + + /* + * Reject unsupported case right away. + */ + if (((Query *) (node->query))->commandType == CMD_UTILITY) + elog(ERROR, "unimplemented deparse of CREATE TABLE AS EXECUTE"); + + /* + * Note that INSERT INTO is deparsed as CREATE TABLE AS. They are + * functionally equivalent synonyms so there is no harm from this. + * + * Verbose syntax + * CREATE %{persistence}s [MATERIALIZED VIEW | TABLE] %{if_not_exists}s + * %{identity}D %{columns}s [%{on_commit}s] %{tablespace}s + * AS %{query}s %{with_no_data}s" + */ + if (node->objtype == OBJECT_MATVIEW) + fmt = "CREATE %{persistence}s MATERIALIZED VIEW %{if_not_exists}s "; + else + fmt = "CREATE %{persistence}s TABLE %{if_not_exists}s "; + + createStmt = + new_objtree_VA(fmt, 2, + "persistence", ObjTypeString, + get_persistence_str(node->into->rel->relpersistence), + "if_not_exists", ObjTypeString, + node->if_not_exists ? "IF NOT EXISTS" : ""); + + /* Add identity */ + append_object_object(createStmt, "%{identity}D", + new_objtree_for_qualname_id(RelationRelationId, + objectId)); + + /* COLLUMNS clause */ + if (node->into->colNames == NIL) + tmp = new_objtree_VA("", 1, + "present", ObjTypeBool, false); + else + { + list = NIL; + foreach(cell, node->into->colNames) + list = lappend(list, new_string_object(strVal(lfirst(cell)))); + + tmp = new_objtree_VA("(%{columns:, }I)", 1, + "columns", ObjTypeArray, list); + } + append_object_object(createStmt, "%{columns}s", tmp); + + /* USING clause */ + tmp = new_objtree("USING"); + if (node->into->accessMethod) + append_string_object(tmp, "%{access_method}I", node->into->accessMethod); + else + { + append_null_object(tmp, "%{access_method}I"); + append_bool_object(tmp, "present", false); + } + append_object_object(createStmt, "%{access_method}s", tmp); + + /* WITH clause */ + tmp = new_objtree_VA("WITH", 0); + list = NIL; + + foreach(cell, node->into->options) + { + DefElem *opt = (DefElem *) lfirst(cell); + + tmp2 = deparse_DefElem(opt, false); + list = lappend(list, new_object_object(tmp2)); + } + + if (list) + append_array_object(tmp, "(%{with:, }s)", list); + else + append_bool_object(tmp, "present", false); + + append_object_object(createStmt, "%{with_clause}s", tmp); + + /* ON COMMIT clause. CREATE MATERIALIZED VIEW doesn't have one */ + if (node->objtype == OBJECT_TABLE) + { + append_object_object(createStmt, "%{on_commit}s", + deparse_OnCommitClause(node->into->onCommit)); + } + + /* TABLESPACE clause */ + tmp = new_objtree_VA("TABLESPACE %{tablespace}I", 0); + if (node->into->tableSpaceName) + append_string_object(tmp, "%{tablespace}s", node->into->tableSpaceName); + else + { + append_null_object(tmp, "%{tablespace}I"); + append_bool_object(tmp, "present", false); + } + append_object_object(createStmt, "%{tablespace}s", tmp); + + /* add the query */ + Assert(IsA(node->query, Query)); + append_string_object(createStmt, "AS %{query}s", + pg_get_querydef((Query *) node->query, false)); + + /* add a WITH NO DATA clause */ + tmp = new_objtree_VA("WITH NO DATA", 1, + "present", ObjTypeBool, + node->into->skipData ? true : false); + append_object_object(createStmt, "%{with_no_data}s", tmp); + + relation_close(relation, AccessShareLock); + + return createStmt; +} + +/* + * Deparse a CreateTrigStmt (CREATE TRIGGER) + * + * Given a trigger OID and the parse tree that created it, return an ObjTree + * representing the creation command. + */ +static ObjTree * +deparse_CreateTrigStmt(Oid objectId, Node *parsetree) +{ + CreateTrigStmt *node = (CreateTrigStmt *) parsetree; + Relation pg_trigger; + HeapTuple trigTup; + Form_pg_trigger trigForm; + ObjTree *trigger; + ObjTree *tmpobj; + int tgnargs; + List *list; + List *events; + + pg_trigger = table_open(TriggerRelationId, AccessShareLock); + + trigTup = get_catalog_object_by_oid(pg_trigger, Anum_pg_trigger_oid, objectId); + trigForm = (Form_pg_trigger) GETSTRUCT(trigTup); + + /* + * Verbose syntax + * + * CREATE %{constraint}s TRIGGER %{name}I %{time}s %{events: OR }s ON + * %{relation}D %{from_table}s %{constraint_attrs: }s FOR EACH + * %{for_each}s %{when}s EXECUTE PROCEDURE %{function}s + */ + trigger = new_objtree("CREATE"); + + append_string_object(trigger, "%{constraint}s", + node->isconstraint ? "CONSTRAINT" : ""); + + append_string_object(trigger, "TRIGGER %{name}I", node->trigname); + + if (node->timing == TRIGGER_TYPE_BEFORE) + append_string_object(trigger, "%{time}s", "BEFORE"); + else if (node->timing == TRIGGER_TYPE_AFTER) + append_string_object(trigger, "%{time}s", "AFTER"); + else if (node->timing == TRIGGER_TYPE_INSTEAD) + append_string_object(trigger, "%{time}s", "INSTEAD OF"); + else + elog(ERROR, "unrecognized trigger timing type %d", node->timing); + + /* + * Decode the events that the trigger fires for. The output is a list; in + * most cases it will just be a string with the event name, but when + * there's an UPDATE with a list of columns, we return a JSON object. + */ + events = NIL; + if (node->events & TRIGGER_TYPE_INSERT) + events = lappend(events, new_string_object("INSERT")); + if (node->events & TRIGGER_TYPE_DELETE) + events = lappend(events, new_string_object("DELETE")); + if (node->events & TRIGGER_TYPE_TRUNCATE) + events = lappend(events, new_string_object("TRUNCATE")); + if (node->events & TRIGGER_TYPE_UPDATE) + { + if (node->columns == NIL) + { + events = lappend(events, new_string_object("UPDATE")); + } + else + { + ObjTree *update; + ListCell *cell; + List *cols = NIL; + + /* + * Currently only UPDATE OF can be objects in the output JSON, but + * we add a "kind" element so that user code can distinguish + * possible future new event types. + */ + update = new_objtree_VA("UPDATE OF", 1, + "kind", ObjTypeString, "update_of"); + + foreach(cell, node->columns) + { + char *colname = strVal(lfirst(cell)); + + cols = lappend(cols, new_string_object(colname)); + } + + append_array_object(update, "%{columns:, }I", cols); + + events = lappend(events, new_object_object(update)); + } + } + append_array_object(trigger, "%{events: OR }s", events); + + tmpobj = new_objtree_for_qualname_id(RelationRelationId, + trigForm->tgrelid); + append_object_object(trigger, "ON %{relation}D", tmpobj); + + tmpobj = new_objtree_VA("FROM", 0); + if (trigForm->tgconstrrelid) + { + ObjTree *rel; + + rel = new_objtree_for_qualname_id(RelationRelationId, + trigForm->tgconstrrelid); + append_object_object(tmpobj, "%{relation}D", rel); + } + else + append_bool_object(tmpobj, "present", false); + append_object_object(trigger, "%{from_table}s", tmpobj); + + list = NIL; + if (node->deferrable) + list = lappend(list, + new_string_object("DEFERRABLE")); + if (node->initdeferred) + list = lappend(list, + new_string_object("INITIALLY DEFERRED")); + append_array_object(trigger, "%{constraint_attrs: }s", list); + + append_string_object(trigger, "FOR EACH %{for_each}s", + node->row ? "ROW" : "STATEMENT"); + + tmpobj = new_objtree_VA("WHEN", 0); + if (node->whenClause) + { + Node *whenClause; + Datum value; + bool isnull; + + value = fastgetattr(trigTup, Anum_pg_trigger_tgqual, + RelationGetDescr(pg_trigger), &isnull); + if (isnull) + elog(ERROR, "bogus NULL tgqual"); + + whenClause = stringToNode(TextDatumGetCString(value)); + append_string_object(tmpobj, "(%{clause}s)", + pg_get_trigger_whenclause(trigForm, + whenClause, + false)); + } + else + append_bool_object(tmpobj, "present", false); + append_object_object(trigger, "%{when}s", tmpobj); + + tmpobj = new_objtree_VA("%{funcname}D", 1, + "funcname", ObjTypeObject, + new_objtree_for_qualname_id(ProcedureRelationId, + trigForm->tgfoid)); + list = NIL; + tgnargs = trigForm->tgnargs; + if (tgnargs > 0) + { + bytea *tgargs; + char *argstr; + bool isnull; + int findx; + int lentgargs; + char *p; + + tgargs = DatumGetByteaP(fastgetattr(trigTup, + Anum_pg_trigger_tgargs, + RelationGetDescr(pg_trigger), + &isnull)); + if (isnull) + elog(ERROR, "invalid NULL tgargs"); + argstr = (char *) VARDATA(tgargs); + lentgargs = VARSIZE_ANY_EXHDR(tgargs); + + p = argstr; + for (findx = 0; findx < tgnargs; findx++) + { + size_t tlen; + + /* Verify that the argument encoding is correct */ + tlen = strlen(p); + if (p + tlen >= argstr + lentgargs) + ereport(ERROR, + (errcode(ERRCODE_INVALID_PARAMETER_VALUE), + errmsg("invalid argument string (%s) for trigger \"%s\"", + argstr, NameStr(trigForm->tgname)))); + + list = lappend(list, new_string_object(p)); + + p += tlen + 1; + } + } + + append_format_string(tmpobj, "("); + append_array_object(tmpobj, "%{args:, }L", list); /* might be NIL */ + append_format_string(tmpobj, ")"); + + append_object_object(trigger, "EXECUTE PROCEDURE %{function}s", tmpobj); + + table_close(pg_trigger, AccessShareLock); + + return trigger; +} + +/* + * Deparse a CreateUserMappingStmt (CREATE USER MAPPING) + * + * Given a User Mapping OID and the parse tree that created it, + * return an ObjTree representing the CREATE USER MAPPING command. + */ +static ObjTree * +deparse_CreateUserMappingStmt(Oid objectId, Node *parsetree) +{ + CreateUserMappingStmt *node = (CreateUserMappingStmt *) parsetree; + ObjTree *createStmt; + Relation rel; + HeapTuple tp; + Form_pg_user_mapping form; + ForeignServer *server; + + rel = table_open(UserMappingRelationId, RowExclusiveLock); + + /* + * Lookup up object in the catalog, so we don't have to deal with + * current_user and such. + */ + tp = SearchSysCache1(USERMAPPINGOID, ObjectIdGetDatum(objectId)); + if (!HeapTupleIsValid(tp)) + elog(ERROR, "cache lookup failed for user mapping %u", objectId); + + form = (Form_pg_user_mapping) GETSTRUCT(tp); + + server = GetForeignServer(form->umserver); + + createStmt = new_objtree("CREATE USER MAPPING "); + + append_object_object(createStmt, "FOR %{role}R", new_objtree_for_role_id(form->umuser)); + + append_string_object(createStmt, "SERVER %{server}I", server->servername); + + /* add an OPTIONS clause, if any */ + append_object_object(createStmt, "%{generic_options}s", + deparse_FdwOptions(node->options, NULL)); + + ReleaseSysCache(tp); + table_close(rel, RowExclusiveLock); + return createStmt; +} + +/* + * deparse_AlterUserMapping + * + * Given a User Mapping OID and the parse tree that created it, + * return the JSON blob representing the alter command. + */ +static ObjTree * +deparse_AlterUserMappingStmt(Oid objectId, Node *parsetree) +{ + AlterUserMappingStmt *node = (AlterUserMappingStmt *) parsetree; + ObjTree *alterStmt; + Relation rel; + HeapTuple tp; + Form_pg_user_mapping form; + ForeignServer *server; + + rel = table_open(UserMappingRelationId, RowExclusiveLock); + + /* + * Lookup up object in the catalog, so we don't have to deal with + * current_user and such. + */ + + tp = SearchSysCache1(USERMAPPINGOID, ObjectIdGetDatum(objectId)); + if (!HeapTupleIsValid(tp)) + elog(ERROR, "cache lookup failed for user mapping %u", objectId); + + form = (Form_pg_user_mapping) GETSTRUCT(tp); + + /* + * Lookup up object in the catalog, so we don't have to deal with + * current_user and such. + */ + + tp = SearchSysCache1(USERMAPPINGOID, ObjectIdGetDatum(objectId)); + if (!HeapTupleIsValid(tp)) + elog(ERROR, "cache lookup failed for user mapping %u", objectId); + + form = (Form_pg_user_mapping) GETSTRUCT(tp); + + + server = GetForeignServer(form->umserver); + + alterStmt = new_objtree("ALTER USER MAPPING"); + + append_object_object(alterStmt, "FOR %{role}R", new_objtree_for_role_id(form->umuser)); + + append_string_object(alterStmt, "SERVER %{server}I", server->servername); + + /* add an OPTIONS clause, if any */ + append_object_object(alterStmt, "%{generic_options}s", + deparse_FdwOptions(node->options, NULL)); + + ReleaseSysCache(tp); + table_close(rel, RowExclusiveLock); + return alterStmt; +} + +/* + * Deparse an AlterStatsStmt (ALTER STATISTICS) + * + * Given a alter statistics OID and the parse tree that created it, + * return the JSON blob representing the alter command. + */ +static ObjTree * +deparse_AlterStatsStmt(Oid objectId, Node *parsetree) +{ + AlterStatsStmt *node = (AlterStatsStmt *) parsetree; + ObjTree *alterStat; + HeapTuple tp; + Form_pg_statistic_ext statform; + + if (!node->stxstattarget) + return NULL; + + alterStat = new_objtree("ALTER STATISTICS"); + + /* Lookup up object in the catalog */ + tp = SearchSysCache1(STATEXTOID, ObjectIdGetDatum(objectId)); + if (!HeapTupleIsValid(tp)) + elog(ERROR, "cache lookup failed for statistic %u", objectId); + + statform = (Form_pg_statistic_ext) GETSTRUCT(tp); + + append_object_object(alterStat, "%{identity}D", + new_objtree_for_qualname(statform->stxnamespace, + NameStr(statform->stxname))); + + append_float_object(alterStat, "SET STATISTICS %{target}n", node->stxstattarget); + + ReleaseSysCache(tp); + return alterStat; +} + +/* + * Deparse a RefreshMatViewStmt (REFRESH MATERIALIZED VIEW) + * + * Given a materialized view OID and the parse tree that created it, return an + * ObjTree representing the refresh command. + */ +static ObjTree * +deparse_RefreshMatViewStmt(Oid objectId, Node *parsetree) +{ + RefreshMatViewStmt *node = (RefreshMatViewStmt *) parsetree; + ObjTree *refreshStmt; + ObjTree *tmp; + + refreshStmt = new_objtree_VA("REFRESH MATERIALIZED VIEW", 0); + + /* Add a CONCURRENTLY clause */ + append_string_object(refreshStmt, "%{concurrently}s", + node->concurrent ? "CONCURRENTLY" : ""); + /* Add the matview name */ + append_object_object(refreshStmt, "%{identity}D", + new_objtree_for_qualname_id(RelationRelationId, + objectId)); + /* Add a WITH NO DATA clause */ + tmp = new_objtree_VA("WITH NO DATA", 1, + "present", ObjTypeBool, + node->skipData ? true : false); + append_object_object(refreshStmt, "%{with_no_data}s", tmp); + + return refreshStmt; +} + +/* + * Deparse DefElems, as used e.g. by ALTER COLUMN ... SET, into a list of SET + * (...) or RESET (...) contents. + */ +static ObjTree * +deparse_DefElem(DefElem *elem, bool is_reset) +{ + ObjTree *set; + ObjTree *optname; + + set = new_objtree(""); + optname = new_objtree(""); + + if (elem->defnamespace != NULL) + append_string_object(optname, "%{schema}I.", elem->defnamespace); + + append_string_object(optname, "%{label}I", elem->defname); + + append_object_object(set, "%{label}s", optname); + + if (!is_reset) + append_string_object(set, " = %{value}L", + elem->arg ? defGetString(elem) : + defGetBoolean(elem) ? "TRUE" : "FALSE"); + + return set; +} + +/* + * Handle deparsing of DROP commands. + */ +char * +deparse_drop_command(const char *objidentity, const char *objecttype, + DropBehavior behavior) +{ + StringInfoData str; + char *command; + char *identity = (char *) objidentity; + char *fmt; + ObjTree *stmt; + ObjTree *stmt2; + Jsonb *jsonb; + + initStringInfo(&str); + + fmt = psprintf("DROP %s IF EXISTS %%{objidentity}s", objecttype); + + stmt = new_objtree_VA(fmt, 1, "objidentity", ObjTypeString, identity); + stmt2 = new_objtree_VA("CASCADE", 1, + "present", ObjTypeBool, behavior == DROP_CASCADE); + + append_object_object(stmt, "%{cascade}s", stmt2); + + jsonb = objtree_to_jsonb(stmt); + command = JsonbToCString(&str, &jsonb->root, JSONB_ESTIMATED_LEN); + + return command; +} + +/* + * Handle deparsing setting of Function + */ +static ObjTree * +deparse_FunctionSet(VariableSetKind kind, char *name, char *value) +{ + ObjTree *obj; + + if (kind == VAR_RESET_ALL) + { + obj = new_objtree("RESET ALL"); + } + else if (value != NULL) + { + obj = new_objtree_VA("SET %{set_name}I", 1, + "set_name", ObjTypeString, name); + + /* + * Some GUC variable names are 'LIST' type and hence must not be + * quoted. + */ + if (GetConfigOptionFlags(name, true) & GUC_LIST_QUOTE) + append_string_object(obj, "TO %{set_value}s", value); + else + append_string_object(obj, "TO %{set_value}L", value); + } + else + { + obj = new_objtree("RESET"); + append_string_object(obj, "%{set_name}I", name); + } + + return obj; +} + +/* + * Deparse an IndexStmt. + * + * Given an index OID and the parse tree that created it, return an ObjTree + * representing the creation command. + * + * If the index corresponds to a constraint, NULL is returned. + */ +static ObjTree * +deparse_IndexStmt(Oid objectId, Node *parsetree) +{ + IndexStmt *node = (IndexStmt *) parsetree; + ObjTree *indexStmt; + ObjTree *tmpobj; + Relation idxrel; + Relation heaprel; + char *index_am; + char *definition; + char *reloptions; + char *tablespace; + char *whereClause; + + if (node->primary || node->isconstraint) + { + /* + * Indexes for PRIMARY KEY and other constraints are output + * separately; return empty here. + */ + return NULL; + } + + idxrel = relation_open(objectId, AccessShareLock); + heaprel = relation_open(idxrel->rd_index->indrelid, AccessShareLock); + + pg_get_indexdef_detailed(objectId, + &index_am, &definition, &reloptions, + &tablespace, &whereClause); + + /* + * Verbose syntax + * + * CREATE %{unique}s INDEX %{concurrently}s %{if_not_exists}s %{name}I ON + * %{table}D USING %{index_am}s (%{definition}s) %{with}s %{tablespace}s + * %{where_clause}s + */ + indexStmt = new_objtree("CREATE"); + + append_string_object(indexStmt, "%{unique}s", + node->unique ? "UNIQUE" : ""); + + append_format_string(indexStmt, "INDEX"); + + append_string_object(indexStmt, "%{concurrently}s", + node->concurrent ? "CONCURRENTLY" : ""); + + append_string_object(indexStmt, "%{if_not_exists}s", + node->if_not_exists ? "IF NOT EXISTS" : ""); + + append_string_object(indexStmt, "%{name}I", + RelationGetRelationName(idxrel)); + + append_object_object(indexStmt, "ON %{table}D", + new_objtree_for_qualname(heaprel->rd_rel->relnamespace, + RelationGetRelationName(heaprel))); + + append_string_object(indexStmt, "USING %{index_am}s", index_am); + + append_string_object(indexStmt, "(%{definition}s)", definition); + + /* reloptions */ + tmpobj = new_objtree("WITH"); + if (reloptions) + append_string_object(tmpobj, "(%{opts}s)", reloptions); + else + append_bool_object(tmpobj, "present", false); + append_object_object(indexStmt, "%{with}s", tmpobj); + + /* tablespace */ + tmpobj = new_objtree("TABLESPACE"); + if (tablespace) + append_string_object(tmpobj, "%{tablespace}s", tablespace); + else + append_bool_object(tmpobj, "present", false); + append_object_object(indexStmt, "%{tablespace}s", tmpobj); + + /* WHERE clause */ + tmpobj = new_objtree("WHERE"); + if (whereClause) + append_string_object(tmpobj, "%{where}s", whereClause); + else + append_bool_object(tmpobj, "present", false); + append_object_object(indexStmt, "%{where_clause}s", tmpobj); + + table_close(idxrel, AccessShareLock); + table_close(heaprel, AccessShareLock); + + return indexStmt; +} + +/* + * Deparse the INHERITS relations. + * + * Given a table OID, return a schema-qualified table list representing + * the parent tables. + */ +static List * +deparse_InhRelations(Oid objectId) +{ + List *parents = NIL; + Relation inhRel; + SysScanDesc scan; + ScanKeyData key; + HeapTuple tuple; + + inhRel = table_open(InheritsRelationId, RowExclusiveLock); + + ScanKeyInit(&key, + Anum_pg_inherits_inhrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(objectId)); + + scan = systable_beginscan(inhRel, InheritsRelidSeqnoIndexId, + true, NULL, 1, &key); + + while (HeapTupleIsValid(tuple = systable_getnext(scan))) + { + ObjTree *parent; + Form_pg_inherits formInh = (Form_pg_inherits) GETSTRUCT(tuple); + + parent = new_objtree_for_qualname_id(RelationRelationId, + formInh->inhparent); + parents = lappend(parents, new_object_object(parent)); + } + + systable_endscan(scan); + table_close(inhRel, RowExclusiveLock); + + return parents; +} + +/* + * Deparse the ON COMMIT ... clause for CREATE ... TEMPORARY ... + */ +static ObjTree * +deparse_OnCommitClause(OnCommitAction option) +{ + ObjTree *oncommit; + + oncommit = new_objtree("ON COMMIT"); + switch (option) + { + case ONCOMMIT_DROP: + append_string_object(oncommit, "%{on_commit_value}s", "DROP"); + break; + + case ONCOMMIT_DELETE_ROWS: + append_string_object(oncommit, "%{on_commit_value}s", "DELETE ROWS"); + break; + + case ONCOMMIT_PRESERVE_ROWS: + append_string_object(oncommit, "%{on_commit_value}s", "PRESERVE ROWS"); + break; + + case ONCOMMIT_NOOP: + append_null_object(oncommit, "%{on_commit_value}s"); + append_bool_object(oncommit, "present", false); + break; + } + + return oncommit; +} + +/* + * Deparse a RenameStmt. + */ +static ObjTree * +deparse_RenameStmt(ObjectAddress address, Node *parsetree) +{ + RenameStmt *node = (RenameStmt *) parsetree; + ObjTree *renameStmt; + char *fmtstr; + const char *objtype; + Relation relation; + Oid schemaId; + + /* + * In an ALTER .. RENAME command, we don't have the original name of the + * object in system catalogs: since we inspect them after the command has + * executed, the old name is already gone. Therefore, we extract it from + * the parse node. Note we still extract the schema name from the catalog + * (it might not be present in the parse node); it cannot possibly have + * changed anyway. + */ + switch (node->renameType) + { + case OBJECT_TABLE: + case OBJECT_INDEX: + case OBJECT_SEQUENCE: + case OBJECT_VIEW: + case OBJECT_MATVIEW: + + /* + * Verbose syntax + * + * ALTER %s %{if_exists}s %{identity}D RENAME TO %{newname}I + */ + objtype = stringify_objtype(node->renameType); + fmtstr = psprintf("ALTER %s", objtype); + relation = relation_open(address.objectId, AccessShareLock); + schemaId = RelationGetNamespace(relation); + renameStmt = new_objtree_VA(fmtstr, 0); + append_string_object(renameStmt, "%{if_exists}s", + node->missing_ok ? "IF EXISTS" : ""); + append_object_object(renameStmt, "%{identity}D", + new_objtree_for_qualname(schemaId, + node->relation->relname)); + append_string_object(renameStmt, "RENAME TO %{newname}I", + node->newname); + relation_close(relation, AccessShareLock); + break; + + case OBJECT_POLICY: + { + HeapTuple polTup; + Form_pg_policy polForm; + Relation pg_policy; + ScanKeyData key; + SysScanDesc scan; + + pg_policy = relation_open(PolicyRelationId, AccessShareLock); + ScanKeyInit(&key, Anum_pg_policy_oid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(address.objectId)); + scan = systable_beginscan(pg_policy, PolicyOidIndexId, true, + NULL, 1, &key); + polTup = systable_getnext(scan); + if (!HeapTupleIsValid(polTup)) + elog(ERROR, "cache lookup failed for policy %u", address.objectId); + polForm = (Form_pg_policy) GETSTRUCT(polTup); + + renameStmt = new_objtree_VA("ALTER POLICY", 0); + append_string_object(renameStmt, "%{if_exists}s", + node->missing_ok ? "IF EXISTS" : ""); + append_string_object(renameStmt, "%{policyname}I", node->subname); + append_object_object(renameStmt, "ON %{identity}D", + new_objtree_for_qualname_id(RelationRelationId, + polForm->polrelid)); + append_string_object(renameStmt, "RENAME TO %{newname}I", + node->newname); + systable_endscan(scan); + relation_close(pg_policy, AccessShareLock); + + } + break; + + case OBJECT_ATTRIBUTE: + case OBJECT_COLUMN: + relation = relation_open(address.objectId, AccessShareLock); + schemaId = RelationGetNamespace(relation); + + /* + * Verbose syntax + * + * Composite types: ALTER objtype %{identity}D RENAME ATTRIBUTE + * %{colname}I TO %{newname}I %{cascade}s + * + * Normal types: ALTER objtype %{if_exists}s %%{identity}D RENAME + * COLUMN %{colname}I TO %{newname}I + */ + + if (node->renameType == OBJECT_ATTRIBUTE) + { + renameStmt = new_objtree("ALTER TYPE"); + append_object_object(renameStmt, "%{identity}D", + new_objtree_for_qualname(schemaId, + node->relation->relname)); + fmtstr = psprintf("RENAME ATTRIBUTE %%{colname}I"); + } + else + { + objtype = stringify_objtype(node->relationType); + fmtstr = psprintf("ALTER %s", objtype); + renameStmt = new_objtree(fmtstr); + + /* Composite types do not support IF EXISTS */ + if (node->renameType == OBJECT_COLUMN) + append_string_object(renameStmt, "%{if_exists}s", + node->missing_ok ? "IF EXISTS" : ""); + + append_object_object(renameStmt, "%{identity}D", + new_objtree_for_qualname(schemaId, + node->relation->relname)); + fmtstr = psprintf("RENAME COLUMN %%{colname}I"); + } + + append_string_object(renameStmt, fmtstr, node->subname); + append_string_object(renameStmt, "TO %{newname}I", node->newname); + + if (node->renameType == OBJECT_ATTRIBUTE) + append_object_object(renameStmt, "%{cascade}s", + new_objtree_VA("CASCADE", 1, + "present", ObjTypeBool, + node->behavior == DROP_CASCADE)); + + relation_close(relation, AccessShareLock); + + break; + case OBJECT_FUNCTION: + { + char *ident; + HeapTuple proctup; + Form_pg_proc procform; + List *identity; + + Assert(IsA(node->object, ObjectWithArgs)); + identity = ((ObjectWithArgs *) node->object)->objname; + + proctup = SearchSysCache1(PROCOID, + ObjectIdGetDatum(address.objectId)); + if (!HeapTupleIsValid(proctup)) + elog(ERROR, "cache lookup failed for procedure %u", + address.objectId); + procform = (Form_pg_proc) GETSTRUCT(proctup); + + /* XXX does this work for ordered-set aggregates? */ + ident = psprintf("%s%s", + quote_qualified_identifier(get_namespace_name(procform->pronamespace), + strVal(llast(identity))), + format_procedure_args(address.objectId, true)); + + fmtstr = psprintf("ALTER %s %%{identity}s RENAME TO %%{newname}I", + stringify_objtype(node->renameType)); + renameStmt = new_objtree_VA(fmtstr, 2, + "identity", ObjTypeString, ident, + "newname", ObjTypeString, node->newname); + + ReleaseSysCache(proctup); + } + break; + + case OBJECT_OPCLASS: + { + HeapTuple opcTup; + Form_pg_opclass opcForm; + List *oldnames; + char *schemaname; + char *opcname; + char *fmt; + + fmt = psprintf("ALTER %s %%{identity}D USING %%{index_method}s RENAME TO %%{newname}I", + stringify_objtype(node->renameType)); + + opcTup = SearchSysCache1(CLAOID, ObjectIdGetDatum(address.objectId)); + if (!HeapTupleIsValid(opcTup)) + elog(ERROR, "cache lookup failed for opclass with OID %u", + address.objectId); + + opcForm = (Form_pg_opclass) GETSTRUCT(opcTup); + + oldnames = list_copy_tail((List *) node->object, 1); + + /* Deconstruct the name list */ + DeconstructQualifiedName(oldnames, &schemaname, &opcname); + + renameStmt = new_objtree_VA(fmt, 3, + "identity", ObjTypeObject, + new_objtree_for_qualname(opcForm->opcnamespace, + opcname), + "index_method", ObjTypeString, + get_am_name(opcForm->opcmethod), + "newname", ObjTypeString, node->newname); + + ReleaseSysCache(opcTup); + } + break; + + case OBJECT_OPFAMILY: + { + HeapTuple opfTup; + HeapTuple amTup; + Form_pg_opfamily opfForm; + Form_pg_am amForm; + List *oldnames; + char *schemaname; + char *opfname; + char *fmt; + + fmt = psprintf("ALTER %s %%{identity}D USING %%{index_method}s RENAME TO %%{newname}I", + stringify_objtype(node->renameType)); + + opfTup = SearchSysCache1(OPFAMILYOID, address.objectId); + if (!HeapTupleIsValid(opfTup)) + elog(ERROR, "cache lookup failed for operator family with OID %u", + address.objectId); + opfForm = (Form_pg_opfamily) GETSTRUCT(opfTup); + + amTup = SearchSysCache1(AMOID, ObjectIdGetDatum(opfForm->opfmethod)); + if (!HeapTupleIsValid(amTup)) + elog(ERROR, "cache lookup failed for access method %u", + opfForm->opfmethod); + + amForm = (Form_pg_am) GETSTRUCT(amTup); + + oldnames = list_copy_tail((List *) node->object, 1); + + /* Deconstruct the name list */ + DeconstructQualifiedName(oldnames, &schemaname, &opfname); + + renameStmt = new_objtree_VA(fmt, 3, + "identity", ObjTypeObject, + new_objtree_for_qualname(opfForm->opfnamespace, + opfname), + "index_method", ObjTypeString, + NameStr(amForm->amname), + "newname", ObjTypeString, node->newname); + + ReleaseSysCache(amTup); + ReleaseSysCache(opfTup); + } + break; + + case OBJECT_SCHEMA: + renameStmt = + new_objtree_VA("ALTER SCHEMA %{identity}I RENAME TO %{newname}I", 2, + "identity", ObjTypeString, node->subname, + "newname", ObjTypeString, node->newname); + break; + + case OBJECT_FDW: + case OBJECT_FOREIGN_SERVER: + { + String *identity = castNode(String, node->object); + + fmtstr = psprintf("ALTER %s %%{identity}s RENAME TO %%{newname}I", + stringify_objtype(node->renameType)); + renameStmt = + new_objtree_VA(fmtstr, 2, + "identity", ObjTypeString, strVal(identity), + "newname", ObjTypeString, node->newname); + } + break; + + case OBJECT_RULE: + { + HeapTuple rewrTup; + Form_pg_rewrite rewrForm; + Relation pg_rewrite; + + pg_rewrite = relation_open(RewriteRelationId, AccessShareLock); + rewrTup = get_catalog_object_by_oid(pg_rewrite, Anum_pg_rewrite_oid, address.objectId); + rewrForm = (Form_pg_rewrite) GETSTRUCT(rewrTup); + + renameStmt = new_objtree_VA("ALTER RULE %{rulename}I ON %{identity}D RENAME TO %{newname}I", + 3, + "rulename", ObjTypeString, node->subname, + "identity", ObjTypeObject, + new_objtree_for_qualname_id(RelationRelationId, + rewrForm->ev_class), + "newname", ObjTypeString, node->newname); + relation_close(pg_rewrite, AccessShareLock); + } + break; + + case OBJECT_TRIGGER: + { + HeapTuple trigTup; + Form_pg_trigger trigForm; + Relation pg_trigger; + + pg_trigger = relation_open(TriggerRelationId, AccessShareLock); + trigTup = get_catalog_object_by_oid(pg_trigger, get_object_attnum_oid(address.classId), address.objectId); + trigForm = (Form_pg_trigger) GETSTRUCT(trigTup); + + renameStmt = new_objtree_VA("ALTER TRIGGER %{triggername}I ON %{identity}D RENAME TO %{newname}I", + 3, + "triggername", ObjTypeString, node->subname, + "identity", ObjTypeObject, + new_objtree_for_qualname_id(RelationRelationId, + trigForm->tgrelid), + "newname", ObjTypeString, node->newname); + + relation_close(pg_trigger, AccessShareLock); + } + break; + + case OBJECT_COLLATION: + case OBJECT_STATISTIC_EXT: + case OBJECT_TYPE: + case OBJECT_CONVERSION: + case OBJECT_DOMAIN: + case OBJECT_TSDICTIONARY: + case OBJECT_TSPARSER: + case OBJECT_TSTEMPLATE: + case OBJECT_TSCONFIGURATION: + { + HeapTuple objTup; + Relation catalog; + Datum objnsp; + bool isnull; + AttrNumber Anum_namespace; + List *identity = castNode(List, node->object); + char *fmtstring; + + /* Obtain object tuple */ + catalog = relation_open(address.classId, AccessShareLock); + objTup = get_catalog_object_by_oid(catalog, get_object_attnum_oid(address.classId), address.objectId); + + /* Obtain namespace */ + Anum_namespace = get_object_attnum_namespace(address.classId); + objnsp = heap_getattr(objTup, Anum_namespace, + RelationGetDescr(catalog), &isnull); + if (isnull) + elog(ERROR, "invalid NULL namespace"); + + objtype = stringify_objtype(node->renameType); + fmtstring = psprintf("ALTER %s", objtype); + + renameStmt = new_objtree_VA(fmtstring, + 0); + append_object_object(renameStmt, "%{identity}D", + new_objtree_for_qualname(DatumGetObjectId(objnsp), + strVal(llast(identity)))); + + append_string_object(renameStmt, "RENAME TO %{newname}I", + node->newname); + relation_close(catalog, AccessShareLock); + } + break; + + default: + elog(ERROR, "unsupported object type %d", node->renameType); + } + + return renameStmt; +} + +/* + * Deparse a AlterObjectDependsStmt (ALTER ... DEPENDS ON ...). + */ +static ObjTree * +deparse_AlterDependStmt(Oid objectId, Node *parsetree) +{ + AlterObjectDependsStmt *node = (AlterObjectDependsStmt *) parsetree; + ObjTree *alterDependeStmt = NULL; + + + if (node->objectType == OBJECT_INDEX) + { + Relation relation = relation_open(objectId, AccessShareLock); + ObjTree *qualified; + + alterDependeStmt = new_objtree("ALTER INDEX"); + + qualified = new_objtree_for_qualname(relation->rd_rel->relnamespace, + node->relation->relname); + append_object_object(alterDependeStmt, "%{identity}D", qualified); + relation_close(relation, AccessShareLock); + + append_string_object(alterDependeStmt, "%{NO}s", + node->remove ? "NO" : ""); + + append_format_string(alterDependeStmt, "DEPENDS ON EXTENSION"); + append_string_object(alterDependeStmt, "%{newname}I", strVal(node->extname)); + } + else + elog(LOG, "unrecognized node type in deparse command: %d", + (int) nodeTag(parsetree)); + + return alterDependeStmt; +} + +/* + * Deparse the sequence CACHE option. + */ +static inline ObjElem * +deparse_Seq_Cache(ObjTree *parent, Form_pg_sequence seqdata, bool alter_table) +{ + ObjTree *cache; + char *tmpstr; + char *fmt; + + tmpstr = psprintf(INT64_FORMAT, seqdata->seqcache); + + if (alter_table) + fmt = "SET CACHE %{value}s"; + else + fmt = "CACHE %{value}s"; + + cache = new_objtree_VA(fmt, 2, + "clause", ObjTypeString, "cache", + "value", ObjTypeString, tmpstr); + + return new_object_object(cache); +} + +/* + * Deparse the sequence CYCLE option. + */ +static inline ObjElem * +deparse_Seq_Cycle(ObjTree *parent, Form_pg_sequence seqdata, bool alter_table) +{ + ObjTree *cycle; + char *fmt; + + if (alter_table) + fmt = "SET %{no}s CYCLE"; + else + fmt = "%{no}s CYCLE"; + + cycle = new_objtree_VA(fmt, 2, + "clause", ObjTypeString, "cycle", + "no", ObjTypeString, + seqdata->seqcycle ? "" : "NO"); + return new_object_object(cycle); +} + +/* + * Deparse the sequence INCREMENT BY option. + */ +static inline ObjElem * +deparse_Seq_IncrementBy(ObjTree *parent, Form_pg_sequence seqdata, bool alter_table) +{ + ObjTree *incrementalby; + char *tmpstr; + char *fmt; + + if (alter_table) + fmt = "SET INCREMENT BY %{value}s"; + else + fmt = "INCREMENT BY %{value}s"; + + tmpstr = psprintf(INT64_FORMAT, seqdata->seqincrement); + incrementalby = new_objtree_VA(fmt, 2, + "clause", ObjTypeString, "seqincrement", + "value", ObjTypeString, tmpstr); + return new_object_object(incrementalby); +} + +/* + * Deparse the sequence MAXVALUE option. + */ +static inline ObjElem * +deparse_Seq_Maxvalue(ObjTree *parent, Form_pg_sequence seqdata, bool alter_table) +{ + ObjTree *maxvalue; + char *tmpstr; + char *fmt; + + if (alter_table) + fmt = "SET MAXVALUE %{value}s"; + else + fmt = "MAXVALUE %{value}s"; + + tmpstr = psprintf(INT64_FORMAT, seqdata->seqmax); + maxvalue = new_objtree_VA(fmt, 2, + "clause", ObjTypeString, "maxvalue", + "value", ObjTypeString, tmpstr); + return new_object_object(maxvalue); +} + +/* + * Deparse the sequence MINVALUE option. + */ +static inline ObjElem * +deparse_Seq_Minvalue(ObjTree *parent, Form_pg_sequence seqdata, bool alter_table) +{ + ObjTree *minvalue; + char *tmpstr; + char *fmt; + + if (alter_table) + fmt = "SET MINVALUE %{value}s"; + else + fmt = "MINVALUE %{value}s"; + + tmpstr = psprintf(INT64_FORMAT, seqdata->seqmin); + minvalue = new_objtree_VA(fmt, 2, + "clause", ObjTypeString, "minvalue", + "value", ObjTypeString, tmpstr); + return new_object_object(minvalue); +} + +/* + * Deparse the sequence OWNED BY command. + */ +static ObjElem * +deparse_Seq_OwnedBy(ObjTree *parent, Oid sequenceId, bool alter_table) +{ + ObjTree *ownedby = NULL; + Relation depRel; + SysScanDesc scan; + ScanKeyData keys[3]; + HeapTuple tuple; + + depRel = table_open(DependRelationId, AccessShareLock); + ScanKeyInit(&keys[0], + Anum_pg_depend_classid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(RelationRelationId)); + ScanKeyInit(&keys[1], + Anum_pg_depend_objid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(sequenceId)); + ScanKeyInit(&keys[2], + Anum_pg_depend_objsubid, + BTEqualStrategyNumber, F_INT4EQ, + Int32GetDatum(0)); + + scan = systable_beginscan(depRel, DependDependerIndexId, true, + NULL, 3, keys); + while (HeapTupleIsValid(tuple = systable_getnext(scan))) + { + Oid ownerId; + Form_pg_depend depform; + ObjTree *tmpobj; + char *colname; + + depform = (Form_pg_depend) GETSTRUCT(tuple); + + /* Only consider AUTO dependencies on pg_class */ + if (depform->deptype != DEPENDENCY_AUTO) + continue; + if (depform->refclassid != RelationRelationId) + continue; + if (depform->refobjsubid <= 0) + continue; + + ownerId = depform->refobjid; + colname = get_attname(ownerId, depform->refobjsubid, false); + if (colname == NULL) + continue; + + tmpobj = new_objtree_for_qualname_id(RelationRelationId, ownerId); + append_string_object(tmpobj, "attrname", colname); + ownedby = new_objtree_VA("OWNED BY %{owner}D", + 2, + "clause", ObjTypeString, "owned", + "owner", ObjTypeObject, tmpobj); + } + + systable_endscan(scan); + relation_close(depRel, AccessShareLock); + + /* + * If there's no owner column, emit an empty OWNED BY element, set up so + * that it won't print anything. + */ + if (!ownedby) + /* XXX this shouldn't happen ... */ + ownedby = new_objtree_VA("OWNED BY %{owner}D", + 3, + "clause", ObjTypeString, "owned", + "owner", ObjTypeNull, + "present", ObjTypeBool, false); + + return new_object_object(ownedby); +} + +/* + * Deparse the sequence RESTART option. + */ +static inline ObjElem * +deparse_Seq_Restart(ObjTree *parent, Form_pg_sequence_data seqdata) +{ + ObjTree *restart; + char *tmpstr; + + tmpstr = psprintf(INT64_FORMAT, seqdata->last_value); + restart = new_objtree_VA("RESTART %{value}s", 2, + "clause", ObjTypeString, "restart", + "value", ObjTypeString, tmpstr); + return new_object_object(restart); +} + +/* + * Deparse the sequence START WITH option. + */ +static inline ObjElem * +deparse_Seq_Startwith(ObjTree *parent, Form_pg_sequence seqdata, bool alter_table) +{ + ObjTree *startwith; + char *tmpstr; + char *fmt; + + if (alter_table) + fmt = "SET START WITH %{value}s"; + else + fmt = "START WITH %{value}s"; + + tmpstr = psprintf(INT64_FORMAT, seqdata->seqstart); + startwith = new_objtree_VA(fmt, 2, + "clause", ObjTypeString, "start", + "value", ObjTypeString, tmpstr); + return new_object_object(startwith); +} + +/* + * Deparse the type STORAGE option. + */ +static inline ObjElem * +deparse_Type_Storage(ObjTree *parent, Form_pg_type typForm) +{ + ObjTree *storage; + char *tmpstr; + char *fmt; + char *str; + + switch (typForm->typstorage) + { + case 'p': + str = "plain"; + break; + case 'e': + str = "external"; + break; + case 'x': + str = "extended"; + break; + case 'm': + str = "main"; + break; + default: + elog(ERROR, "invalid storage specifier %c", typForm->typstorage); + } + + tmpstr = psprintf("%s", str); + + fmt = "STORAGE = %{value}s"; + + storage = new_objtree_VA(fmt, 2, + "clause", ObjTypeString, "storage", + "value", ObjTypeString, tmpstr); + + return new_object_object(storage); +} + +/* + * Deparse the type RECEIVE option. + */ +static inline ObjElem * +deparse_Type_Receive(ObjTree *parent, Form_pg_type typForm) +{ + ObjTree *receive; + + receive = new_objtree_VA("RECEIVE=", 1, + "clause", ObjTypeString, "receive"); + if (OidIsValid(typForm->typreceive)) + append_object_object(receive, "%{procedure}D", + new_objtree_for_qualname_id(ProcedureRelationId, + typForm->typreceive)); + else + append_bool_object(receive, "present", false); + + return new_object_object(receive); +} + +/* + * Deparse the type SEND option. + */ +static inline ObjElem * +deparse_Type_Send(ObjTree *parent, Form_pg_type typForm) +{ + ObjTree *send; + + send = new_objtree_VA("SEND=", 1, + "clause", ObjTypeString, "send"); + if (OidIsValid(typForm->typsend)) + append_object_object(send, "%{procedure}D", + new_objtree_for_qualname_id(ProcedureRelationId, + typForm->typsend)); + else + append_bool_object(send, "present", false); + + return new_object_object(send); +} + +/* + * Deparse the type typmod_in option. + */ +static inline ObjElem * +deparse_Type_Typmod_In(ObjTree *parent, Form_pg_type typForm) +{ + ObjTree *typmodin; + + typmodin = new_objtree_VA("TYPMOD_IN=", 1, + "clause", ObjTypeString, "typmod_in"); + if (OidIsValid(typForm->typmodin)) + append_object_object(typmodin, "%{procedure}D", + new_objtree_for_qualname_id(ProcedureRelationId, + typForm->typmodin)); + else + append_bool_object(typmodin, "present", false); + + return new_object_object(typmodin); +} + + +/* + * Deparse the type typmod_out option. + */ +static inline ObjElem * +deparse_Type_Typmod_Out(ObjTree *parent, Form_pg_type typForm) +{ + ObjTree *typmodout; + + typmodout = new_objtree_VA("TYPMOD_OUT=", 1, + "clause", ObjTypeString, "typmod_out"); + if (OidIsValid(typForm->typmodout)) + append_object_object(typmodout, "%{procedure}D", + new_objtree_for_qualname_id(ProcedureRelationId, + typForm->typmodout)); + else + append_bool_object(typmodout, "present", false); + + return new_object_object(typmodout); +} + + +/* + * Deparse the type analyze option. + */ +static inline ObjElem * +deparse_Type_Analyze(ObjTree *parent, Form_pg_type typForm) +{ + ObjTree *typanalyze; + + typanalyze = new_objtree_VA("ANALYZE=", 1, + "clause", ObjTypeString, "analyze"); + if (OidIsValid(typForm->typanalyze)) + append_object_object(typanalyze, "%{procedure}D", + new_objtree_for_qualname_id(ProcedureRelationId, + typForm->typanalyze)); + else + append_bool_object(typanalyze, "present", false); + + return new_object_object(typanalyze); +} + +/* + * Deparse the type subscript option. + */ +static inline ObjElem * +deparse_Type_Subscript(ObjTree *parent, Form_pg_type typForm) +{ + ObjTree *typsubscript; + + typsubscript = new_objtree_VA("SUBSCRIPT=", 1, + "clause", ObjTypeString, "subscript"); + if (OidIsValid(typForm->typsubscript)) + append_object_object(typsubscript, "%{procedure}D", + new_objtree_for_qualname_id(ProcedureRelationId, + typForm->typsubscript)); + else + append_bool_object(typsubscript, "present", false); + + return new_object_object(typsubscript); +} + +/* + * Deparse a RuleStmt (CREATE RULE). + * + * Given a rule OID and the parse tree that created it, return an ObjTree + * representing the rule command. + */ +static ObjTree * +deparse_RuleStmt(Oid objectId, Node *parsetree) +{ + RuleStmt *node = (RuleStmt *) parsetree; + ObjTree *ruleStmt; + ObjTree *tmp; + Relation pg_rewrite; + Form_pg_rewrite rewrForm; + HeapTuple rewrTup; + SysScanDesc scan; + ScanKeyData key; + Datum ev_qual; + Datum ev_actions; + bool isnull; + char *qual; + List *actions; + List *list; + ListCell *cell; + + pg_rewrite = table_open(RewriteRelationId, AccessShareLock); + ScanKeyInit(&key, + Anum_pg_rewrite_oid, + BTEqualStrategyNumber, + F_OIDEQ, ObjectIdGetDatum(objectId)); + + scan = systable_beginscan(pg_rewrite, RewriteOidIndexId, true, + NULL, 1, &key); + rewrTup = systable_getnext(scan); + if (!HeapTupleIsValid(rewrTup)) + elog(ERROR, "cache lookup failed for rewrite rule with oid %u", + objectId); + + rewrForm = (Form_pg_rewrite) GETSTRUCT(rewrTup); + + ruleStmt = new_objtree("CREATE RULE"); + + append_string_object(ruleStmt, "%{or_replace}s", + node->replace ? "OR REPLACE" : ""); + + append_string_object(ruleStmt, "%{identity}I", + node->rulename); + + append_string_object(ruleStmt, "AS ON %{event}s", + node->event == CMD_SELECT ? "SELECT" : + node->event == CMD_UPDATE ? "UPDATE" : + node->event == CMD_DELETE ? "DELETE" : + node->event == CMD_INSERT ? "INSERT" : "XXX"); + append_object_object(ruleStmt, "TO %{table}D", + new_objtree_for_qualname_id(RelationRelationId, + rewrForm->ev_class)); + + append_string_object(ruleStmt, "DO %{instead}s", + node->instead ? "INSTEAD" : "ALSO"); + + ev_qual = heap_getattr(rewrTup, Anum_pg_rewrite_ev_qual, + RelationGetDescr(pg_rewrite), &isnull); + ev_actions = heap_getattr(rewrTup, Anum_pg_rewrite_ev_action, + RelationGetDescr(pg_rewrite), &isnull); + + pg_get_ruledef_detailed(ev_qual, ev_actions, &qual, &actions); + + tmp = new_objtree_VA("WHERE %{clause}s", 0); + + if (qual) + append_string_object(tmp, "clause", qual); + else + { + append_null_object(tmp, "clause"); + append_bool_object(tmp, "present", false); + } + + append_object_object(ruleStmt, "where_clause", tmp); + + list = NIL; + foreach(cell, actions) + { + char *action = lfirst(cell); + + list = lappend(list, new_string_object(action)); + } + append_array_object(ruleStmt, "%{actions:, }s", list); + + systable_endscan(scan); + table_close(pg_rewrite, AccessShareLock); + + return ruleStmt; +} + +/* + * Deparse a CreateTransformStmt (CREATE TRANSFORM). + * + * Given a transform OID and the parse tree that created it, return an ObjTree + * representing the CREATE TRANSFORM command. + */ +static ObjTree * +deparse_CreateTransformStmt(Oid objectId, Node *parsetree) +{ + CreateTransformStmt *node = (CreateTransformStmt *) parsetree; + ObjTree *createTransform; + ObjTree *sign; + HeapTuple trfTup; + HeapTuple langTup; + HeapTuple procTup; + Form_pg_transform trfForm; + Form_pg_language langForm; + Form_pg_proc procForm; + int i; + + /* Get the pg_transform tuple */ + trfTup = SearchSysCache1(TRFOID, ObjectIdGetDatum(objectId)); + if (!HeapTupleIsValid(trfTup)) + elog(ERROR, "cache lookup failure for transform with OID %u", + objectId); + trfForm = (Form_pg_transform) GETSTRUCT(trfTup); + + /* Get the corresponding pg_language tuple */ + langTup = SearchSysCache1(LANGOID, trfForm->trflang); + if (!HeapTupleIsValid(langTup)) + elog(ERROR, "cache lookup failure for language with OID %u", + trfForm->trflang); + langForm = (Form_pg_language) GETSTRUCT(langTup); + + /* + * Verbose syntax + * + * CREATE %{or_replace}s TRANSFORM FOR %{typename}D LANGUAGE %{language}I + * ( FROM SQL WITH FUNCTION %{signature}s, TO SQL WITH FUNCTION + * %{signature_tof}s ) + */ + createTransform = new_objtree("CREATE"); + + append_string_object(createTransform, "%{or_replace}s", + node->replace ? "OR REPLACE" : ""); + append_object_object(createTransform, "TRANSFORM FOR %{typename}D", + new_objtree_for_qualname_id(TypeRelationId, + trfForm->trftype)); + append_string_object(createTransform, "LANGUAGE %{language}I", + NameStr(langForm->lanname)); + + /* deparse the transform_element_list */ + if (trfForm->trffromsql != InvalidOid) + { + List *params = NIL; + + /* + * Verbose syntax + * + * CREATE %{or_replace}s TRANSFORM FOR %{typename}D LANGUAGE + * %{language}I ( FROM SQL WITH FUNCTION %{signature}s ) + */ + + /* Get the pg_proc tuple for the FROM FUNCTION */ + procTup = SearchSysCache1(PROCOID, trfForm->trffromsql); + if (!HeapTupleIsValid(procTup)) + elog(ERROR, "cache lookup failure for function with OID %u", + trfForm->trffromsql); + procForm = (Form_pg_proc) GETSTRUCT(procTup); + + /* + * CREATE TRANSFORM does not change function signature so we can use + * catalog to get input type Oids. + */ + for (i = 0; i < procForm->pronargs; i++) + { + ObjTree *paramobj = new_objtree(""); + + append_object_object(paramobj, "%{type}T", + new_objtree_for_type(procForm->proargtypes.values[i], -1)); + params = lappend(params, new_object_object(paramobj)); + } + + sign = new_objtree(""); + + append_object_object(sign, "%{identity}D", + new_objtree_for_qualname(procForm->pronamespace, + NameStr(procForm->proname))); + append_array_object(sign, "(%{arguments:, }s)", params); + + append_object_object(createTransform, "(FROM SQL WITH FUNCTION %{signature}s", sign); + ReleaseSysCache(procTup); + } + if (trfForm->trftosql != InvalidOid) + { + List *params = NIL; + + /* + * Verbose syntax + * + * CREATE %{or_replace}s TRANSFORM FOR %{typename}D LANGUAGE + * %{language}I ( FROM SQL WITH FUNCTION %{signature}s, TO SQL WITH + * FUNCTION %{signature_tof}s ) + * + * OR + * + * CREATE %{or_replace}s TRANSFORM FOR %{typename}D LANGUAGE + * %{language}I ( TO SQL WITH FUNCTION %{signature_tof}s ) + */ + + /* Append a ',' if trffromsql is present, else append '(' */ + append_string_object(createTransform, "%{comma}s", + trfForm->trffromsql != InvalidOid ? "," : "("); + + /* Get the pg_proc tuple for the TO FUNCTION */ + procTup = SearchSysCache1(PROCOID, trfForm->trftosql); + if (!HeapTupleIsValid(procTup)) + elog(ERROR, "cache lookup failure for function with OID %u", + trfForm->trftosql); + procForm = (Form_pg_proc) GETSTRUCT(procTup); + + /* + * CREATE TRANSFORM does not change function signature so we can use + * catalog to get input type Oids. + */ + for (i = 0; i < procForm->pronargs; i++) + { + ObjTree *paramobj = new_objtree(""); + + append_object_object(paramobj, "%{type}T", + new_objtree_for_type(procForm->proargtypes.values[i], -1)); + params = lappend(params, new_object_object(paramobj)); + } + + sign = new_objtree(""); + + append_object_object(sign, "%{identity}D", + new_objtree_for_qualname(procForm->pronamespace, + NameStr(procForm->proname))); + append_array_object(sign, "(%{arguments:, }s)", params); + + append_object_object(createTransform, "TO SQL WITH FUNCTION %{signature_tof}s", sign); + ReleaseSysCache(procTup); + } + append_string_object(createTransform, "%{close_bracket}s", ")"); + + ReleaseSysCache(langTup); + ReleaseSysCache(trfTup); + return createTransform; +} + +/* + * Handle deparsing of simple commands. + * + * This function should cover all cases handled in ProcessUtilitySlow. + */ +static ObjTree * +deparse_simple_command(CollectedCommand *cmd) +{ + Oid objectId; + Node *parsetree; + ObjTree *command; + + Assert(cmd->type == SCT_Simple); + + parsetree = cmd->parsetree; + objectId = cmd->d.simple.address.objectId; + + if (cmd->in_extension && (nodeTag(parsetree) != T_CreateExtensionStmt)) + return NULL; + + + /* This switch needs to handle everything that ProcessUtilitySlow does */ + switch (nodeTag(parsetree)) + { + case T_CreateSchemaStmt: + command = deparse_CreateSchemaStmt(objectId, parsetree); + break; + + case T_AlterDomainStmt: + command = deparse_AlterDomainStmt(objectId, parsetree, + cmd->d.simple.secondaryObject); + break; + + case T_CreateStmt: + command = deparse_CreateStmt(objectId, parsetree); + break; + + case T_RefreshMatViewStmt: + command = deparse_RefreshMatViewStmt(objectId, parsetree); + break; + + case T_CreateTrigStmt: + command = deparse_CreateTrigStmt(objectId, parsetree); + break; + + case T_RuleStmt: + command = deparse_RuleStmt(objectId, parsetree); + break; + + case T_CreateSeqStmt: + command = deparse_CreateSeqStmt(objectId, parsetree); + break; + + case T_CreateFdwStmt: + command = deparse_CreateFdwStmt(objectId, parsetree); + break; + + case T_CreateUserMappingStmt: + command = deparse_CreateUserMappingStmt(objectId, parsetree); + break; + + case T_AlterUserMappingStmt: + command = deparse_AlterUserMappingStmt(objectId, parsetree); + break; + + case T_AlterStatsStmt: + command = deparse_AlterStatsStmt(objectId, parsetree); + break; + + case T_AlterFdwStmt: + command = deparse_AlterFdwStmt(objectId, parsetree); + break; + + case T_AlterSeqStmt: + command = deparse_AlterSeqStmt(objectId, parsetree); + break; + + case T_DefineStmt: + command = deparse_DefineStmt(objectId, parsetree, + cmd->d.simple.secondaryObject); + break; + + case T_CreateConversionStmt: + command = deparse_CreateConversion(objectId, parsetree); + break; + + case T_CreateDomainStmt: + command = deparse_CreateDomain(objectId, parsetree); + break; + + case T_CreateExtensionStmt: + command = deparse_CreateExtensionStmt(objectId, parsetree); + break; + + case T_AlterExtensionStmt: + command = deparse_AlterExtensionStmt(objectId, parsetree); + break; + + case T_AlterExtensionContentsStmt: + command = deparse_AlterExtensionContentsStmt(objectId, parsetree, + cmd->d.simple.secondaryObject); + break; + + case T_CreateOpFamilyStmt: + command = deparse_CreateOpFamily(objectId, parsetree); + break; + + case T_CreatePolicyStmt: + command = deparse_CreatePolicyStmt(objectId, parsetree); + break; + + case T_IndexStmt: + command = deparse_IndexStmt(objectId, parsetree); + break; + + case T_CreateFunctionStmt: + command = deparse_CreateFunction(objectId, parsetree); + break; + + case T_AlterFunctionStmt: + command = deparse_AlterFunction(objectId, parsetree); + break; + + case T_AlterCollationStmt: + command = deparse_AlterCollation(objectId, parsetree); + break; + + case T_RenameStmt: + command = deparse_RenameStmt(cmd->d.simple.address, parsetree); + break; + + case T_AlterObjectDependsStmt: + command = deparse_AlterDependStmt(objectId, parsetree); + break; + + case T_AlterObjectSchemaStmt: + command = deparse_AlterObjectSchemaStmt(cmd->d.simple.address, + parsetree, + cmd->d.simple.secondaryObject); + break; + + case T_AlterOwnerStmt: + command = deparse_AlterOwnerStmt(cmd->d.simple.address, parsetree); + break; + + case T_AlterOperatorStmt: + command = deparse_AlterOperatorStmt(objectId, parsetree); + break; + + case T_AlterPolicyStmt: + command = deparse_AlterPolicyStmt(objectId, parsetree); + break; + + case T_AlterTypeStmt: + command = deparse_AlterTypeSetStmt(objectId, parsetree); + break; + + case T_CreateStatsStmt: + command = deparse_CreateStatisticsStmt(objectId, parsetree); + break; + + case T_CreateForeignServerStmt: + command = deparse_CreateForeignServerStmt(objectId, parsetree); + break; + + case T_AlterForeignServerStmt: + command = deparse_AlterForeignServerStmt(objectId, parsetree); + break; + + case T_CompositeTypeStmt: + command = deparse_CompositeTypeStmt(objectId, parsetree); + break; + + case T_CreateEnumStmt: /* CREATE TYPE AS ENUM */ + command = deparse_CreateEnumStmt(objectId, parsetree); + break; + + case T_CreateRangeStmt: /* CREATE TYPE AS RANGE */ + command = deparse_CreateRangeStmt(objectId, parsetree); + break; + + case T_AlterEnumStmt: + command = deparse_AlterEnumStmt(objectId, parsetree); + break; + + case T_CreateCastStmt: + command = deparse_CreateCastStmt(objectId, parsetree); + break; + + case T_AlterTSDictionaryStmt: + command = deparse_AlterTSDictionaryStmt(objectId, parsetree); + break; + + case T_CreateTransformStmt: + command = deparse_CreateTransformStmt(objectId, parsetree); + break; + + case T_ViewStmt: /* CREATE VIEW */ + command = deparse_ViewStmt(objectId, parsetree); + break; + + case T_CreateTableAsStmt: /* CREATE MATERIALIZED VIEW */ + command = deparse_CreateTableAsStmt_vanilla(objectId, parsetree); + break; + + default: + command = NULL; + elog(LOG, "unrecognized node type in deparse command: %d", + (int) nodeTag(parsetree)); + } + + return command; +} + +/* + * Subroutine for CREATE TABLE deparsing. + * + * Deal with all the table elements (columns and constraints). + * + * Note we ignore constraints in the parse node here; they are extracted from + * system catalogs instead. + */ +static List * +deparse_TableElements(Relation relation, List *tableElements, List *dpcontext, + bool typed, bool composite) +{ + List *elements = NIL; + ListCell *lc; + + foreach(lc, tableElements) + { + Node *elt = (Node *) lfirst(lc); + + switch (nodeTag(elt)) + { + case T_ColumnDef: + { + ObjTree *tree; + + tree = typed ? + deparse_ColumnDef_typed(relation, dpcontext, + (ColumnDef *) elt) : + deparse_ColumnDef(relation, dpcontext, + composite, (ColumnDef *) elt, + false, NULL); + if (tree != NULL) + { + ObjElem *column; + + column = new_object_object(tree); + elements = lappend(elements, column); + } + } + break; + case T_Constraint: + break; + default: + elog(ERROR, "invalid node type %d", nodeTag(elt)); + } + } + + return elements; +} + +/* + * Workhorse to deparse a CollectedCommand. + */ +char * +deparse_utility_command(CollectedCommand *cmd, bool verbose_mode) +{ + OverrideSearchPath *overridePath; + MemoryContext oldcxt; + MemoryContext tmpcxt; + ObjTree *tree; + char *command; + StringInfoData str; + + /* + * Allocate everything done by the deparsing routines into a temp context, + * to avoid having to sprinkle them with memory handling code, but + * allocate the output StringInfo before switching. + */ + initStringInfo(&str); + tmpcxt = AllocSetContextCreate(CurrentMemoryContext, + "deparse ctx", + ALLOCSET_DEFAULT_MINSIZE, + ALLOCSET_DEFAULT_INITSIZE, + ALLOCSET_DEFAULT_MAXSIZE); + oldcxt = MemoryContextSwitchTo(tmpcxt); + + /* + * Many routines underlying this one will invoke ruleutils.c functionality + * to obtain deparsed versions of expressions. In such results, we want + * all object names to be qualified, so that results are "portable" to + * environments with different search_path settings. Rather than inject + * what would be repetitive calls to override search path all over the + * place, we do it centrally here. + */ + overridePath = GetOverrideSearchPath(CurrentMemoryContext); + overridePath->schemas = NIL; + overridePath->addCatalog = false; + overridePath->addTemp = true; + PushOverrideSearchPath(overridePath); + + verbose = verbose_mode; + + switch (cmd->type) + { + case SCT_Simple: + tree = deparse_simple_command(cmd); + break; + case SCT_AlterTable: + tree = deparse_AlterTableStmt(cmd); + break; + case SCT_Grant: + tree = deparse_GrantStmt(cmd); + break; + case SCT_AlterOpFamily: + tree = deparse_AlterOpFamily(cmd); + break; + case SCT_CreateOpClass: + tree = deparse_CreateOpClassStmt(cmd); + break; + case SCT_AlterTSConfig: + tree = deparse_AlterTSConfigurationStmt(cmd); + break; + default: + elog(ERROR, "unexpected deparse node type %d", cmd->type); + } + + PopOverrideSearchPath(); + + if (tree) + { + Jsonb *jsonb; + + jsonb = objtree_to_jsonb(tree); + command = JsonbToCString(&str, &jsonb->root, JSONB_ESTIMATED_LEN); + } + else + command = NULL; + + /* + * Clean up. Note that since we created the StringInfo in the caller's + * context, the output string is not deleted here. + */ + MemoryContextSwitchTo(oldcxt); + MemoryContextDelete(tmpcxt); + + return command; +} diff --git a/src/backend/commands/ddl_json.c b/src/backend/commands/ddl_json.c new file mode 100644 index 0000000000..e16751915f --- /dev/null +++ b/src/backend/commands/ddl_json.c @@ -0,0 +1,764 @@ +/*------------------------------------------------------------------------- + * + * ddl_json.c + * JSON code related to DDL command deparsing + * + * Portions Copyright (c) 1996-2022, PostgreSQL Global Development Group + * Portions Copyright (c) 1994, Regents of the University of California + * + * IDENTIFICATION + * src/backend/commands/ddl_json.c + * + *------------------------------------------------------------------------- + */ +#include "postgres.h" + +#include "lib/stringinfo.h" +#include "utils/builtins.h" +#include "utils/jsonb.h" + + +/* + * Conversion specifier which determines how we expand the JSON element into + * string. + */ +typedef enum +{ + SpecTypename, + SpecOperatorname, + SpecDottedName, + SpecString, + SpecNumber, + SpecStringLiteral, + SpecIdentifier, + SpecRole +} convSpecifier; + +/* + * A ternary value that represents a boolean type JsonbValue. + */ +typedef enum +{ + tv_absent, + tv_true, + tv_false +} json_trivalue; + +static bool expand_one_jsonb_element(StringInfo buf, char *param, + JsonbValue *jsonval, convSpecifier specifier, + const char *fmt); +static void expand_jsonb_array(StringInfo buf, char *param, + JsonbValue *jsonarr, char *arraysep, + convSpecifier specifier, const char *fmt); +static void fmtstr_error_callback(void *arg); +char *ddl_deparse_json_to_string(char *jsonb); + +/* + * Given a JsonbContainer, find the JsonbValue with the given key name in it. + * If it's of a type other than jbvBool, an error is raised. If it doesn't + * exist, tv_absent is returned; otherwise return the actual json_trivalue. + */ +static json_trivalue +find_bool_in_jsonbcontainer(JsonbContainer *container, char *keyname) +{ + JsonbValue key; + JsonbValue *value; + json_trivalue result; + + key.type = jbvString; + key.val.string.val = keyname; + key.val.string.len = strlen(keyname); + value = findJsonbValueFromContainer(container, + JB_FOBJECT, &key); + if (value == NULL) + return tv_absent; + if (value->type != jbvBool) + ereport(ERROR, + (errcode(ERRCODE_INVALID_PARAMETER_VALUE), + errmsg("element \"%s\" is not of type boolean", + keyname))); + result = value->val.boolean ? tv_true : tv_false; + pfree(value); + + return result; +} + +/* + * Given a JsonbContainer, find the JsonbValue with the given key name in it. + * If it's of a type other than jbvString, an error is raised. If it doesn't + * exist, an error is raised unless missing_ok; otherwise return NULL. + * + * If it exists and is a string, a freshly palloc'ed copy is returned. + * + * If *length is not NULL, it is set to the length of the string. + */ +static char * +find_string_in_jsonbcontainer(JsonbContainer *container, char *keyname, + bool missing_ok, int *length) +{ + JsonbValue key; + JsonbValue *value; + char *str; + + /* XXX verify that this is an object, not an array */ + + key.type = jbvString; + key.val.string.val = keyname; + key.val.string.len = strlen(keyname); + value = findJsonbValueFromContainer(container, + JB_FOBJECT, &key); + if (value == NULL) + { + if (missing_ok) + return NULL; + ereport(ERROR, + (errcode(ERRCODE_INVALID_PARAMETER_VALUE), + errmsg("missing element \"%s\" in JSON object", keyname))); + } + + str = pnstrdup(value->val.string.val, value->val.string.len); + if (length) + *length = value->val.string.len; + pfree(value); + return str; +} + +#define ADVANCE_PARSE_POINTER(ptr,end_ptr) \ + do { \ + if (++(ptr) >= (end_ptr)) \ + ereport(ERROR, \ + (errcode(ERRCODE_INVALID_PARAMETER_VALUE), \ + errmsg("unterminated format specifier"))); \ + } while (0) + +/* + * Recursive helper for pg_event_trigger_expand_command + * + * Find the "fmt" element in the given container, and expand it into the + * provided StringInfo. + */ +static void +expand_fmt_recursive(JsonbContainer *container, StringInfo buf) +{ + JsonbValue key; + JsonbValue *value; + const char *cp; + const char *start_ptr; + const char *end_ptr; + int len; + + start_ptr = find_string_in_jsonbcontainer(container, "fmt", false, &len); + end_ptr = start_ptr + len; + + for (cp = start_ptr; cp < end_ptr; cp++) + { + convSpecifier specifier; + bool is_array = false; + char *param = NULL; + char *arraysep = NULL; + + if (*cp != '%') + { + appendStringInfoCharMacro(buf, *cp); + continue; + } + + + ADVANCE_PARSE_POINTER(cp, end_ptr); + + /* Easy case: %% outputs a single % */ + if (*cp == '%') + { + appendStringInfoCharMacro(buf, *cp); + continue; + } + + /* + * Scan the mandatory element name. Allow for an array separator + * (which may be the empty string) to be specified after a colon. + */ + if (*cp == '{') + { + StringInfoData parbuf; + StringInfoData arraysepbuf; + StringInfo appendTo; + + initStringInfo(&parbuf); + appendTo = &parbuf; + + ADVANCE_PARSE_POINTER(cp, end_ptr); + for (; cp < end_ptr;) + { + if (*cp == ':') + { + /* + * Found array separator delimiter; element name is now + * complete, start filling the separator. + */ + initStringInfo(&arraysepbuf); + appendTo = &arraysepbuf; + is_array = true; + ADVANCE_PARSE_POINTER(cp, end_ptr); + continue; + } + + if (*cp == '}') + { + ADVANCE_PARSE_POINTER(cp, end_ptr); + break; + } + appendStringInfoCharMacro(appendTo, *cp); + ADVANCE_PARSE_POINTER(cp, end_ptr); + } + param = parbuf.data; + if (is_array) + arraysep = arraysepbuf.data; + } + if (param == NULL) + ereport(ERROR, + (errcode(ERRCODE_INVALID_PARAMETER_VALUE), + errmsg("missing conversion name in conversion specifier"))); + + switch (*cp) + { + case 'I': + specifier = SpecIdentifier; + break; + case 'D': + specifier = SpecDottedName; + break; + case 's': + specifier = SpecString; + break; + case 'L': + specifier = SpecStringLiteral; + break; + case 'T': + specifier = SpecTypename; + break; + case 'O': + specifier = SpecOperatorname; + break; + case 'n': + specifier = SpecNumber; + break; + case 'R': + specifier = SpecRole; + break; + default: + ereport(ERROR, + (errcode(ERRCODE_INVALID_PARAMETER_VALUE), + errmsg("invalid conversion specifier \"%c\"", *cp))); + } + + /* + * Obtain the element to be expanded. + */ + key.type = jbvString; + key.val.string.val = param; + key.val.string.len = strlen(param); + + value = findJsonbValueFromContainer(container, JB_FOBJECT, &key); + + /* + * Expand the data (possibly an array) into the output StringInfo. + */ + if (is_array) + expand_jsonb_array(buf, param, value, arraysep, specifier, start_ptr); + else + expand_one_jsonb_element(buf, param, value, specifier, start_ptr); + } +} + +/* + * Expand a json value as a quoted identifier. The value must be of type string. + */ +static void +expand_jsonval_identifier(StringInfo buf, JsonbValue *jsonval) +{ + char *str; + + Assert(jsonval->type == jbvString); + + str = pnstrdup(jsonval->val.string.val, jsonval->val.string.len); + appendStringInfoString(buf, quote_identifier(str)); + pfree(str); +} + +/* + * Expand a json value as a dot-separated-name. The value must be of type + * object and may contain elements "schemaname" (optional), "objname" + * (mandatory), "attrname" (optional). Double quotes are added to each element + * as necessary, and dot separators where needed. + * + * One day we might need a "catalog" element as well, but no current use case + * needs that. + */ +static void +expand_jsonval_dottedname(StringInfo buf, JsonbValue *jsonval) +{ + char *str; + + str = find_string_in_jsonbcontainer(jsonval->val.binary.data, + "schemaname", true, NULL); + if (str) + { + appendStringInfo(buf, "%s.", quote_identifier(str)); + pfree(str); + } + + str = find_string_in_jsonbcontainer(jsonval->val.binary.data, + "objname", false, NULL); + appendStringInfo(buf, "%s", quote_identifier(str)); + pfree(str); + + str = find_string_in_jsonbcontainer(jsonval->val.binary.data, + "attrname", true, NULL); + if (str) + { + appendStringInfo(buf, ".%s", quote_identifier(str)); + pfree(str); + } +} + +/* + * Expand a JSON value as a type name. + */ +static void +expand_jsonval_typename(StringInfo buf, JsonbValue *jsonval) +{ + char *schema = NULL; + char *typename; + char *typmodstr; + json_trivalue is_array; + char *array_decor; + + /* + * We omit schema-qualifying the output name if the schema element is + * either the empty string or NULL; the difference between those two cases + * is that in the latter we quote the type name, in the former we don't. + * This allows for types with special typmod needs, such as interval and + * timestamp (see format_type_detailed), while at the same time allowing + * for the schema name to be omitted from type names that require quotes + * but are to be obtained from a user schema. + */ + + schema = find_string_in_jsonbcontainer(jsonval->val.binary.data, + "schemaname", true, NULL); + typename = find_string_in_jsonbcontainer(jsonval->val.binary.data, + "typename", false, NULL); + typmodstr = find_string_in_jsonbcontainer(jsonval->val.binary.data, + "typmod", true, NULL); + is_array = find_bool_in_jsonbcontainer(jsonval->val.binary.data, + "typarray"); + switch (is_array) + { + case tv_true: + array_decor = "[]"; + break; + + case tv_false: + array_decor = ""; + break; + + case tv_absent: + default: + ereport(ERROR, + (errcode(ERRCODE_INVALID_PARAMETER_VALUE), + errmsg("missing typarray element"))); + } + + if (schema == NULL) + appendStringInfo(buf, "%s", quote_identifier(typename)); + else if (schema[0] == '\0') + appendStringInfo(buf, "%s", typename); /* Special typmod needs */ + else + appendStringInfo(buf, "%s.%s", quote_identifier(schema), + quote_identifier(typename)); + + appendStringInfo(buf, "%s%s", typmodstr ? typmodstr : "", array_decor); +} + +/* + * Expand a JSON value as an operator name + */ +static void +expand_jsonval_operator(StringInfo buf, JsonbValue *jsonval) +{ + char *str; + + str = find_string_in_jsonbcontainer(jsonval->val.binary.data, + "schemaname", true, NULL); + /* Schema might be NULL or empty */ + if (str != NULL && str[0] != '\0') + { + appendStringInfo(buf, "%s.", quote_identifier(str)); + pfree(str); + } + + str = find_string_in_jsonbcontainer(jsonval->val.binary.data, + "objname", false, NULL); + + if (str) + { + appendStringInfoString(buf, str); + pfree(str); + } +} + +/* + * Expand a JSON value as a string. The value must be of type string or of + * type object. In the latter case, it must contain a "fmt" element which will + * be recursively expanded; also, if the object contains an element "present" + * and it is set to false, the expansion is the empty string. + * + * Returns false if no actual expansion was made due to the "present" flag + * being set to "false". + */ +static bool +expand_jsonval_string(StringInfo buf, JsonbValue *jsonval) +{ + if (jsonval->type == jbvString) + { + appendBinaryStringInfo(buf, jsonval->val.string.val, + jsonval->val.string.len); + } + else if (jsonval->type == jbvBinary) + { + json_trivalue present; + + present = find_bool_in_jsonbcontainer(jsonval->val.binary.data, + "present"); + + /* + * If "present" is set to false, this element expands to empty; + * otherwise (either true or absent), fall through to expand "fmt". + */ + if (present == tv_false) + return false; + + expand_fmt_recursive(jsonval->val.binary.data, buf); + } + else + return false; + + return true; +} + +/* + * Expand a JSON value as a string literal. + */ +static void +expand_jsonval_strlit(StringInfo buf, JsonbValue *jsonval) +{ + char *str; + StringInfoData dqdelim; + static const char dqsuffixes[] = "_XYZZYX_"; + int dqnextchar = 0; + + str = pnstrdup(jsonval->val.string.val, jsonval->val.string.len); + + /* Easy case: if there are no ' and no \, just use a single quote */ + if (strchr(str, '\'') == NULL && + strchr(str, '\\') == NULL) + { + appendStringInfo(buf, "'%s'", str); + pfree(str); + return; + } + + /* Otherwise need to find a useful dollar-quote delimiter */ + initStringInfo(&dqdelim); + appendStringInfoString(&dqdelim, "$"); + while (strstr(str, dqdelim.data) != NULL) + { + appendStringInfoChar(&dqdelim, dqsuffixes[dqnextchar++]); + dqnextchar = dqnextchar % (sizeof(dqsuffixes) - 1); + } + /* Add trailing $ */ + appendStringInfoChar(&dqdelim, '$'); + + /* And finally produce the quoted literal into the output StringInfo */ + appendStringInfo(buf, "%s%s%s", dqdelim.data, str, dqdelim.data); + pfree(dqdelim.data); + pfree(str); +} + +/* + * Expand a JSON value as an integer quantity. + */ +static void +expand_jsonval_number(StringInfo buf, JsonbValue *jsonval) +{ + char *strdatum; + + strdatum = DatumGetCString(DirectFunctionCall1(numeric_out, + NumericGetDatum(jsonval->val.numeric))); + appendStringInfoString(buf, strdatum); +} + +/* + * Expand a JSON value as a role name. If the is_public element is set to + * true, PUBLIC is expanded (no quotes); otherwise, expand the given role name, + * quoting as an identifier. + */ +static void +expand_jsonval_role(StringInfo buf, JsonbValue *jsonval) +{ + json_trivalue is_public; + + is_public = find_bool_in_jsonbcontainer(jsonval->val.binary.data, + "is_public"); + if (is_public == tv_true) + appendStringInfoString(buf, "PUBLIC"); + else + { + char *rolename; + + rolename = find_string_in_jsonbcontainer(jsonval->val.binary.data, + "rolename", false, NULL); + if (rolename) + { + appendStringInfoString(buf, quote_identifier(rolename)); + pfree(rolename); + } + } +} + +/* + * Expand one JSON element into the output StringInfo according to the + * conversion specifier. The element type is validated, and an error is raised + * if it doesn't match what we expect for the conversion specifier. + * + * Returns false if no actual expansion was made (due to the "present" flag + * being set to "false" in formatted string expansion). + */ +static bool +expand_one_jsonb_element(StringInfo buf, char *param, JsonbValue *jsonval, + convSpecifier specifier, const char *fmt) +{ + bool result = true; + ErrorContextCallback sqlerrcontext; + + /* If we were given a format string, setup an ereport() context callback */ + if (fmt) + { + sqlerrcontext.callback = fmtstr_error_callback; + sqlerrcontext.arg = (void *) fmt; + sqlerrcontext.previous = error_context_stack; + error_context_stack = &sqlerrcontext; + } + + if (!jsonval) + ereport(ERROR, + (errcode(ERRCODE_INVALID_PARAMETER_VALUE), + errmsg("element \"%s\" not found", param))); + + switch (specifier) + { + case SpecIdentifier: + if (jsonval->type != jbvString) + ereport(ERROR, + (errcode(ERRCODE_INVALID_PARAMETER_VALUE), + errmsg("expected JSON string for %%I element \"%s\", got %d", + param, jsonval->type))); + expand_jsonval_identifier(buf, jsonval); + break; + + case SpecDottedName: + if (jsonval->type != jbvBinary) + ereport(ERROR, + (errcode(ERRCODE_INVALID_PARAMETER_VALUE), + errmsg("expected JSON object for %%D element \"%s\", got %d", + param, jsonval->type))); + expand_jsonval_dottedname(buf, jsonval); + break; + + case SpecString: + if (jsonval->type != jbvString && + jsonval->type != jbvBinary) + ereport(ERROR, + (errcode(ERRCODE_INVALID_PARAMETER_VALUE), + errmsg("expected JSON string or object for %%s element \"%s\", got %d", + param, jsonval->type))); + result = expand_jsonval_string(buf, jsonval); + break; + + case SpecStringLiteral: + if (jsonval->type != jbvString) + ereport(ERROR, + (errcode(ERRCODE_INVALID_PARAMETER_VALUE), + errmsg("expected JSON string for %%L element \"%s\", got %d", + param, jsonval->type))); + expand_jsonval_strlit(buf, jsonval); + break; + + case SpecTypename: + if (jsonval->type != jbvBinary) + ereport(ERROR, + (errcode(ERRCODE_INVALID_PARAMETER_VALUE), + errmsg("expected JSON object for %%T element \"%s\", got %d", + param, jsonval->type))); + expand_jsonval_typename(buf, jsonval); + break; + + case SpecOperatorname: + if (jsonval->type != jbvBinary) + ereport(ERROR, + (errcode(ERRCODE_INVALID_PARAMETER_VALUE), + errmsg("expected JSON object for %%O element \"%s\", got %d", + param, jsonval->type))); + expand_jsonval_operator(buf, jsonval); + break; + + case SpecNumber: + if (jsonval->type != jbvNumeric) + ereport(ERROR, + (errcode(ERRCODE_INVALID_PARAMETER_VALUE), + errmsg("expected JSON numeric for %%n element \"%s\", got %d", + param, jsonval->type))); + expand_jsonval_number(buf, jsonval); + break; + + case SpecRole: + if (jsonval->type != jbvBinary) + ereport(ERROR, + (errcode(ERRCODE_INVALID_PARAMETER_VALUE), + errmsg("expected JSON object for %%R element \"%s\", got %d", + param, jsonval->type))); + expand_jsonval_role(buf, jsonval); + break; + } + + if (fmt) + error_context_stack = sqlerrcontext.previous; + + return result; +} + +/* + * Iterate on the elements of a JSON array, expanding each one into the output + * StringInfo per the given conversion specifier, separated by the given + * separator. + */ +static void +expand_jsonb_array(StringInfo buf, char *param, + JsonbValue *jsonarr, char *arraysep, convSpecifier specifier, + const char *fmt) +{ + ErrorContextCallback sqlerrcontext; + JsonbContainer *container; + JsonbIterator *it; + JsonbValue v; + int type; + bool first = true; + StringInfoData arrayelem; + + /* If we were given a format string, setup an ereport() context callback */ + if (fmt) + { + sqlerrcontext.callback = fmtstr_error_callback; + sqlerrcontext.arg = (void *) fmt; + sqlerrcontext.previous = error_context_stack; + error_context_stack = &sqlerrcontext; + } + + if (jsonarr->type != jbvBinary) + ereport(ERROR, + (errcode(ERRCODE_INVALID_PARAMETER_VALUE), + errmsg("element \"%s\" is not a JSON array", param))); + + container = jsonarr->val.binary.data; + if (!JsonContainerIsArray(container)) + ereport(ERROR, + (errcode(ERRCODE_INVALID_PARAMETER_VALUE), + errmsg("element \"%s\" is not a JSON array", param))); + + initStringInfo(&arrayelem); + + it = JsonbIteratorInit(container); + while ((type = JsonbIteratorNext(&it, &v, true)) != WJB_DONE) + { + if (type == WJB_ELEM) + { + resetStringInfo(&arrayelem); + + if (expand_one_jsonb_element(&arrayelem, param, &v, specifier, NULL)) + { + if (!first) + appendStringInfoString(buf, arraysep); + + appendBinaryStringInfo(buf, arrayelem.data, arrayelem.len); + first = false; + } + } + } + + if (fmt) + error_context_stack = sqlerrcontext.previous; +} + +/* + * Workhorse for ddl_deparse_expand_command. + */ +char * +ddl_deparse_json_to_string(char *json_str) +{ + Datum d; + Jsonb *jsonb; + StringInfo buf = (StringInfo) palloc0(sizeof(StringInfoData)); + + initStringInfo(buf); + + d = DirectFunctionCall1(jsonb_in, PointerGetDatum(json_str)); + jsonb = (Jsonb *) DatumGetPointer(d); + + expand_fmt_recursive(&jsonb->root, buf); + + return buf->data; +} + +/*------ + * Returns a formatted string from a JSON object. + * + * The starting point is the element named "fmt" (which must be a string). + * This format string may contain zero or more %-escapes, which consist of an + * element name enclosed in { }, possibly followed by a conversion modifier, + * followed by a conversion specifier. Possible conversion specifiers are: + * + * % expand to a literal %. + * I expand as a single, non-qualified identifier + * D expand as a possibly-qualified identifier + * T expand as a type name + * O expand as an operator name + * L expand as a string literal (quote using single quotes) + * s expand as a simple string (no quoting) + * n expand as a simple number (no quoting) + * R expand as a role name (possibly quoted name, or PUBLIC) + * + * The element name may have an optional separator specification preceded + * by a colon. Its presence indicates that the element is expected to be + * an array; the specified separator is used to join the array elements. + *------ + */ +Datum +ddl_deparse_expand_command(PG_FUNCTION_ARGS) +{ + text *json = PG_GETARG_TEXT_P(0); + char *json_str; + + json_str = text_to_cstring(json); + + PG_RETURN_TEXT_P(cstring_to_text(ddl_deparse_json_to_string(json_str))); +} + +/* + * Error context callback for JSON format string expansion. + * + * XXX: indicate which element we're expanding, if applicable. + */ +static void +fmtstr_error_callback(void *arg) +{ + errcontext("while expanding format string \"%s\"", (char *) arg); +} diff --git a/src/backend/commands/meson.build b/src/backend/commands/meson.build index 9b350d025f..c1e1a2c18e 100644 --- a/src/backend/commands/meson.build +++ b/src/backend/commands/meson.build @@ -15,6 +15,8 @@ backend_sources += files( 'copyto.c', 'createas.c', 'dbcommands.c', + 'ddl_deparse.c', + 'ddl_json.c', 'define.c', 'discard.c', 'dropcmds.c', diff --git a/src/backend/commands/sequence.c b/src/backend/commands/sequence.c index 99c9f91cba..4205dda222 100644 --- a/src/backend/commands/sequence.c +++ b/src/backend/commands/sequence.c @@ -1708,6 +1708,39 @@ process_owned_by(Relation seqrel, List *owned_by, bool for_identity) relation_close(tablerel, NoLock); } +/* + * Return sequence parameters, detailed + */ +Form_pg_sequence_data +get_sequence_values(Oid sequenceId) +{ + Buffer buf; + SeqTable elm; + Relation seqrel; + HeapTupleData seqtuple; + Form_pg_sequence_data seq; + Form_pg_sequence_data retSeq; + + /* Open and AccessShareLock sequence */ + init_sequence(sequenceId, &elm, &seqrel); + + if (pg_class_aclcheck(sequenceId, GetUserId(), + ACL_SELECT | ACL_UPDATE | ACL_USAGE) != ACLCHECK_OK) + ereport(ERROR, + (errcode(ERRCODE_INSUFFICIENT_PRIVILEGE), + errmsg("permission denied for sequence %s", + RelationGetRelationName(seqrel)))); + + seq = read_seq_tuple(seqrel, &buf, &seqtuple); + retSeq = palloc(sizeof(FormData_pg_sequence_data)); + + memcpy(retSeq, seq, sizeof(FormData_pg_sequence_data)); + + UnlockReleaseBuffer(buf); + relation_close(seqrel, NoLock); + + return retSeq; +} /* * Return sequence parameters in a list of the form created by the parser. diff --git a/src/backend/tcop/utility.c b/src/backend/tcop/utility.c index 247d0816ad..bea35a6281 100644 --- a/src/backend/tcop/utility.c +++ b/src/backend/tcop/utility.c @@ -1446,7 +1446,8 @@ ProcessUtilitySlow(ParseState *pstate, address = DefineCollation(pstate, stmt->defnames, stmt->definition, - stmt->if_not_exists); + stmt->if_not_exists, + &secondaryObject); break; default: elog(ERROR, "unrecognized define stmt type: %d", diff --git a/src/backend/utils/adt/format_type.c b/src/backend/utils/adt/format_type.c index 2918fdbfb6..f64a7213b7 100644 --- a/src/backend/utils/adt/format_type.c +++ b/src/backend/utils/adt/format_type.c @@ -27,7 +27,6 @@ #include "utils/numeric.h" #include "utils/syscache.h" -static char *printTypmod(const char *typname, int32 typmod, Oid typmodout); /* @@ -363,7 +362,7 @@ format_type_with_typemod(Oid type_oid, int32 typemod) /* * Add typmod decoration to the basic type name */ -static char * +char * printTypmod(const char *typname, int32 typmod, Oid typmodout) { char *res; diff --git a/src/backend/utils/adt/regproc.c b/src/backend/utils/adt/regproc.c index 6d4c1c27a5..b3a426858f 100644 --- a/src/backend/utils/adt/regproc.c +++ b/src/backend/utils/adt/regproc.c @@ -44,6 +44,8 @@ static void parseNameAndArgTypes(const char *string, bool allowNone, List **names, int *nargs, Oid *argtypes); +static void format_procedure_args_internal(Form_pg_proc procform, + StringInfo buf, bool force_qualify); /***************************************************************************** * USER I/O ROUTINES * @@ -331,6 +333,29 @@ format_procedure_qualified(Oid procedure_oid) return format_procedure_extended(procedure_oid, FORMAT_PROC_FORCE_QUALIFY); } +/* + * format_procedure_args - converts proc OID to "(args)" + */ +char * +format_procedure_args(Oid procedure_oid, bool force_qualify) +{ + StringInfoData buf; + HeapTuple proctup; + Form_pg_proc procform; + + proctup = SearchSysCache1(PROCOID, ObjectIdGetDatum(procedure_oid)); + if (!HeapTupleIsValid(proctup)) + elog(ERROR, "cache lookup failed for procedure %u", procedure_oid); + procform = (Form_pg_proc) GETSTRUCT(proctup); + + initStringInfo(&buf); + format_procedure_args_internal(procform, &buf, force_qualify); + + ReleaseSysCache(proctup); + + return buf.data; +} + /* * format_procedure_extended - converts procedure OID to "pro_name(args)" * @@ -2060,3 +2085,30 @@ parseNameAndArgTypes(const char *string, bool allowNone, List **names, pfree(rawname); } + +/* + * Append the parenthesized arguments of the given pg_proc row into the output + * buffer. force_qualify indicates whether to schema-qualify type names + * regardless of visibility. + */ +static void +format_procedure_args_internal(Form_pg_proc procform, StringInfo buf, + bool force_qualify) +{ + int i; + int nargs = procform->pronargs; + + appendStringInfoChar(buf, '('); + for (i = 0; i < nargs; i++) + { + Oid thisargtype = procform->proargtypes.values[i]; + + if (i > 0) + appendStringInfoChar(buf, ','); + appendStringInfoString(buf, + force_qualify ? + format_type_be_qualified(thisargtype) : + format_type_be(thisargtype)); + } + appendStringInfoChar(buf, ')'); +} diff --git a/src/backend/utils/adt/ruleutils.c b/src/backend/utils/adt/ruleutils.c index 70d723e80c..a5de597e3b 100644 --- a/src/backend/utils/adt/ruleutils.c +++ b/src/backend/utils/adt/ruleutils.c @@ -35,6 +35,7 @@ #include "catalog/pg_operator.h" #include "catalog/pg_partitioned_table.h" #include "catalog/pg_proc.h" +#include "catalog/pg_rewrite.h" #include "catalog/pg_statistic_ext.h" #include "catalog/pg_trigger.h" #include "catalog/pg_type.h" @@ -358,7 +359,6 @@ static int print_function_arguments(StringInfo buf, HeapTuple proctup, bool print_table_args, bool print_defaults); static void print_function_rettype(StringInfo buf, HeapTuple proctup); static void print_function_trftypes(StringInfo buf, HeapTuple proctup); -static void print_function_sqlbody(StringInfo buf, HeapTuple proctup); static void set_rtable_names(deparse_namespace *dpns, List *parent_namespaces, Bitmapset *rels_used); static void set_deparse_for_query(deparse_namespace *dpns, Query *query, @@ -482,22 +482,15 @@ static void get_from_clause_coldeflist(RangeTblFunction *rtfunc, deparse_context *context); static void get_tablesample_def(TableSampleClause *tablesample, deparse_context *context); -static void get_opclass_name(Oid opclass, Oid actual_datatype, - StringInfo buf); static Node *processIndirection(Node *node, deparse_context *context); static void printSubscripts(SubscriptingRef *sbsref, deparse_context *context); static char *get_relation_name(Oid relid); static char *generate_relation_name(Oid relid, List *namespaces); static char *generate_qualified_relation_name(Oid relid); -static char *generate_function_name(Oid funcid, int nargs, - List *argnames, Oid *argtypes, - bool has_variadic, bool *use_variadic_p, - ParseExprKind special_exprkind); static char *generate_operator_name(Oid operid, Oid arg1, Oid arg2); static void add_cast_to(StringInfo buf, Oid typid); static char *generate_qualified_type_name(Oid typid); static text *string_to_text(char *str); -static char *flatten_reloptions(Oid relid); static void get_reloptions(StringInfo buf, Datum reloptions); #define only_marker(rte) ((rte)->inh ? "" : "ONLY ") @@ -545,6 +538,108 @@ pg_get_ruledef_ext(PG_FUNCTION_ARGS) PG_RETURN_TEXT_P(string_to_text(res)); } +/* + * Given a pair of Datum corresponding to a rule's pg_rewrite.ev_qual and + * ev_action columns, return their text representation; ev_qual as a single + * string in whereClause and ev_action as a List of strings (which might be + * NIL, signalling NOTHING) in actions. + */ +void +pg_get_ruledef_detailed(Datum ev_qual, Datum ev_action, + char **whereClause, List **actions) +{ + int prettyFlags = 0; + char *qualstr = TextDatumGetCString(ev_qual); + char *actionstr = TextDatumGetCString(ev_action); + List *actionNodeList = (List *) stringToNode(actionstr); + StringInfoData buf; + + initStringInfo(&buf); + if (strlen(qualstr) > 0 && strcmp(qualstr, "<>") != 0) + { + Node *qual; + Query *query; + deparse_context context; + deparse_namespace dpns; + + qual = stringToNode(qualstr); + + query = (Query *) linitial(actionNodeList); + query = getInsertSelectQuery(query, NULL); + + AcquireRewriteLocks(query, false, false); + + context.buf = &buf; + context.namespaces = list_make1(&dpns); + context.windowClause = NIL; + context.windowTList = NIL; + context.varprefix = (list_length(query->rtable) != 1); + context.prettyFlags = prettyFlags; + context.wrapColumn = WRAP_COLUMN_DEFAULT; + context.indentLevel = PRETTYINDENT_STD; + + set_deparse_for_query(&dpns, query, NIL); + + get_rule_expr(qual, &context, false); + + *whereClause = pstrdup(buf.data); + } + else + *whereClause = NULL; + + if (list_length(actionNodeList) == 0) + *actions = NIL; + else + { + ListCell *cell; + List *output = NIL; + + foreach(cell, actionNodeList) + { + Query *query = (Query *) lfirst(cell); + + if (query->commandType == CMD_NOTHING) + continue; + + resetStringInfo(&buf); + get_query_def(query, &buf, NIL, NULL, true, + prettyFlags, WRAP_COLUMN_DEFAULT, 0); + output = lappend(output, pstrdup(buf.data)); + } + *actions = output; + } +} + +/* + * In the case that the CREATE VIEW command execution is still in progress, + * we would need to search the system cache RULERELNAME to get the rewrite + * rule of the view as oppose to querying pg_rewrite as in pg_get_viewdef_worker(), + * the latter will return empty result. + */ +char * +pg_get_viewdef_internal(Oid viewoid) +{ + StringInfoData buf; + Relation pg_rewrite; + HeapTuple ruletup; + TupleDesc rulettc; + + initStringInfo(&buf); + pg_rewrite = table_open(RewriteRelationId, AccessShareLock); + + ruletup = SearchSysCache2(RULERELNAME, + ObjectIdGetDatum(viewoid), + PointerGetDatum(ViewSelectRuleName)); + if (!HeapTupleIsValid(ruletup)) + elog(ERROR, "cache lookup failed for rewrite rule for view with OID %u", viewoid); + + rulettc = pg_rewrite->rd_att; + make_viewdef(&buf, ruletup, rulettc, 0, WRAP_COLUMN_DEFAULT); + ReleaseSysCache(ruletup); + table_close(pg_rewrite, AccessShareLock); + + return buf.data; +} static char * pg_get_ruledef_worker(Oid ruleoid, int prettyFlags) @@ -1015,65 +1110,12 @@ pg_get_triggerdef_worker(Oid trigid, bool pretty) if (!isnull) { Node *qual; - char relkind; - deparse_context context; - deparse_namespace dpns; - RangeTblEntry *oldrte; - RangeTblEntry *newrte; - - appendStringInfoString(&buf, "WHEN ("); + char *qualstr; qual = stringToNode(TextDatumGetCString(value)); + qualstr = pg_get_trigger_whenclause(trigrec, qual, pretty); - relkind = get_rel_relkind(trigrec->tgrelid); - - /* Build minimal OLD and NEW RTEs for the rel */ - oldrte = makeNode(RangeTblEntry); - oldrte->rtekind = RTE_RELATION; - oldrte->relid = trigrec->tgrelid; - oldrte->relkind = relkind; - oldrte->rellockmode = AccessShareLock; - oldrte->alias = makeAlias("old", NIL); - oldrte->eref = oldrte->alias; - oldrte->lateral = false; - oldrte->inh = false; - oldrte->inFromCl = true; - - newrte = makeNode(RangeTblEntry); - newrte->rtekind = RTE_RELATION; - newrte->relid = trigrec->tgrelid; - newrte->relkind = relkind; - newrte->rellockmode = AccessShareLock; - newrte->alias = makeAlias("new", NIL); - newrte->eref = newrte->alias; - newrte->lateral = false; - newrte->inh = false; - newrte->inFromCl = true; - - /* Build two-element rtable */ - memset(&dpns, 0, sizeof(dpns)); - dpns.rtable = list_make2(oldrte, newrte); - dpns.subplans = NIL; - dpns.ctes = NIL; - dpns.appendrels = NULL; - set_rtable_names(&dpns, NIL, NULL); - set_simple_column_names(&dpns); - - /* Set up context with one-deep namespace stack */ - context.buf = &buf; - context.namespaces = list_make1(&dpns); - context.windowClause = NIL; - context.windowTList = NIL; - context.varprefix = true; - context.prettyFlags = GET_PRETTY_FLAGS(pretty); - context.wrapColumn = WRAP_COLUMN_DEFAULT; - context.indentLevel = PRETTYINDENT_STD; - context.special_exprkind = EXPR_KIND_NONE; - context.appendparents = NULL; - - get_rule_expr(qual, &context, false); - - appendStringInfoString(&buf, ") "); + appendStringInfo(&buf, "WHEN (%s) ", qualstr); } appendStringInfo(&buf, "EXECUTE FUNCTION %s(", @@ -1114,6 +1156,64 @@ pg_get_triggerdef_worker(Oid trigid, bool pretty) return buf.data; } +char * +pg_get_trigger_whenclause(Form_pg_trigger trigrec, Node *whenClause, bool pretty) +{ + StringInfoData buf; + char relkind; + deparse_context context; + deparse_namespace dpns; + RangeTblEntry *oldrte; + RangeTblEntry *newrte; + + initStringInfo(&buf); + + relkind = get_rel_relkind(trigrec->tgrelid); + + /* Build minimal OLD and NEW RTEs for the rel */ + oldrte = makeNode(RangeTblEntry); + oldrte->rtekind = RTE_RELATION; + oldrte->relid = trigrec->tgrelid; + oldrte->relkind = relkind; + oldrte->alias = makeAlias("old", NIL); + oldrte->eref = oldrte->alias; + oldrte->lateral = false; + oldrte->inh = false; + oldrte->inFromCl = true; + + newrte = makeNode(RangeTblEntry); + newrte->rtekind = RTE_RELATION; + newrte->relid = trigrec->tgrelid; + newrte->relkind = relkind; + newrte->alias = makeAlias("new", NIL); + newrte->eref = newrte->alias; + newrte->lateral = false; + newrte->inh = false; + newrte->inFromCl = true; + + /* Build two-element rtable */ + memset(&dpns, 0, sizeof(dpns)); + dpns.rtable = list_make2(oldrte, newrte); + dpns.ctes = NIL; + set_rtable_names(&dpns, NIL, NULL); + set_simple_column_names(&dpns); + + /* Set up context with one-deep namespace stack */ + context.buf = &buf; + context.namespaces = list_make1(&dpns); + context.windowClause = NIL; + context.windowTList = NIL; + context.varprefix = true; + context.prettyFlags = pretty ? PRETTYFLAG_PAREN | PRETTYFLAG_INDENT : PRETTYFLAG_INDENT; + context.wrapColumn = WRAP_COLUMN_DEFAULT; + context.indentLevel = PRETTYINDENT_STD; + context.special_exprkind = EXPR_KIND_NONE; + + get_rule_expr(whenClause, &context, false); + + return buf.data; +} + /* ---------- * pg_get_indexdef - Get the definition of an index * @@ -1880,6 +1980,13 @@ pg_get_partkeydef_columns(Oid relid, bool pretty) return pg_get_partkeydef_worker(relid, prettyFlags, true, false); } +/* Internal version that reports the full partition key definition */ +char * +pg_get_partkeydef_simple(Oid relid) +{ + return pg_get_partkeydef_worker(relid, 0, false, false); +} + /* * Internal workhorse to decompile a partition key definition. */ @@ -2131,6 +2238,15 @@ pg_get_constraintdef_ext(PG_FUNCTION_ARGS) PG_RETURN_TEXT_P(string_to_text(res)); } +/* + * Internal version that returns the definition of a CONSTRAINT command + */ +char * +pg_get_constraintdef_command_simple(Oid constraintId) +{ + return pg_get_constraintdef_worker(constraintId, false, 0, false); +} + /* * Internal version that returns a full ALTER TABLE ... ADD CONSTRAINT command */ @@ -3501,7 +3617,7 @@ pg_get_function_arg_default(PG_FUNCTION_ARGS) PG_RETURN_TEXT_P(string_to_text(str)); } -static void +void print_function_sqlbody(StringInfo buf, HeapTuple proctup) { int numargs; @@ -11385,7 +11501,7 @@ get_tablesample_def(TableSampleClause *tablesample, deparse_context *context) * actual_datatype. (If you don't want this behavior, just pass * InvalidOid for actual_datatype.) */ -static void +void get_opclass_name(Oid opclass, Oid actual_datatype, StringInfo buf) { @@ -11779,7 +11895,7 @@ generate_qualified_relation_name(Oid relid) * * The result includes all necessary quoting and schema-prefixing. */ -static char * +char * generate_function_name(Oid funcid, int nargs, List *argnames, Oid *argtypes, bool has_variadic, bool *use_variadic_p, ParseExprKind special_exprkind) @@ -12165,7 +12281,7 @@ get_reloptions(StringInfo buf, Datum reloptions) /* * Generate a C string representing a relation's reloptions, or NULL if none. */ -static char * +char * flatten_reloptions(Oid relid) { char *result = NULL; diff --git a/src/include/catalog/pg_proc.dat b/src/include/catalog/pg_proc.dat index 62a5b8e655..c2f1de2801 100644 --- a/src/include/catalog/pg_proc.dat +++ b/src/include/catalog/pg_proc.dat @@ -11827,4 +11827,10 @@ prorettype => 'bytea', proargtypes => 'pg_brin_minmax_multi_summary', prosrc => 'brin_minmax_multi_summary_send' }, +{ oid => '4642', descr => 'deparse the DDL command into JSON format string', + proname => 'ddl_deparse_to_json', prorettype => 'text', + proargtypes => 'pg_ddl_command', prosrc => 'ddl_deparse_to_json' }, +{ oid => '4643', descr => 'expand JSON format DDL to a plain DDL command', + proname => 'ddl_deparse_expand_command', prorettype => 'text', + proargtypes => 'text', prosrc => 'ddl_deparse_expand_command' }, ] diff --git a/src/include/commands/collationcmds.h b/src/include/commands/collationcmds.h index 201b19f8b7..46d183760a 100644 --- a/src/include/commands/collationcmds.h +++ b/src/include/commands/collationcmds.h @@ -18,7 +18,8 @@ #include "catalog/objectaddress.h" #include "parser/parse_node.h" -extern ObjectAddress DefineCollation(ParseState *pstate, List *names, List *parameters, bool if_not_exists); +extern ObjectAddress DefineCollation(ParseState *pstate, List *names, List *parameters, + bool if_not_exists, ObjectAddress *from_collid); extern void IsThereCollationInNamespace(const char *collname, Oid nspOid); extern ObjectAddress AlterCollation(AlterCollationStmt *stmt); diff --git a/src/include/commands/sequence.h b/src/include/commands/sequence.h index b3b04ccfa9..c2b1ca32f6 100644 --- a/src/include/commands/sequence.h +++ b/src/include/commands/sequence.h @@ -54,6 +54,7 @@ typedef struct xl_seq_rec extern int64 nextval_internal(Oid relid, bool check_permissions); extern Datum nextval(PG_FUNCTION_ARGS); extern List *sequence_options(Oid relid); +extern Form_pg_sequence_data get_sequence_values(Oid sequenceId); extern ObjectAddress DefineSequence(ParseState *pstate, CreateSeqStmt *seq); extern ObjectAddress AlterSequence(ParseState *pstate, AlterSeqStmt *stmt); diff --git a/src/include/tcop/ddl_deparse.h b/src/include/tcop/ddl_deparse.h new file mode 100644 index 0000000000..12aae734ca --- /dev/null +++ b/src/include/tcop/ddl_deparse.h @@ -0,0 +1,23 @@ +/*------------------------------------------------------------------------- + * + * ddl_deparse.h + * + * Portions Copyright (c) 1996-2022, PostgreSQL Global Development Group + * Portions Copyright (c) 1994, Regents of the University of California + * + * src/include/tcop/ddl_deparse.h + * + *------------------------------------------------------------------------- + */ +#ifndef DDL_DEPARSE_H +#define DDL_DEPARSE_H + +#include "tcop/deparse_utility.h" + +extern char *deparse_utility_command(CollectedCommand *cmd, bool verbose_mode); +extern char *ddl_deparse_json_to_string(char *jsonb); +extern char *deparse_drop_command(const char *objidentity, const char *objecttype, + DropBehavior behavior); + + +#endif /* DDL_DEPARSE_H */ diff --git a/src/include/tcop/deparse_utility.h b/src/include/tcop/deparse_utility.h index 94de13d990..b53294bf57 100644 --- a/src/include/tcop/deparse_utility.h +++ b/src/include/tcop/deparse_utility.h @@ -62,6 +62,7 @@ typedef struct CollectedCommand { Oid objectId; Oid classId; + bool rewrite; List *subcmds; } alterTable; diff --git a/src/include/utils/aclchk_internal.h b/src/include/utils/aclchk_internal.h index 361284d8eb..4e020ef4ae 100644 --- a/src/include/utils/aclchk_internal.h +++ b/src/include/utils/aclchk_internal.h @@ -39,6 +39,7 @@ typedef struct List *grantees; bool grant_option; DropBehavior behavior; + Oid grantor_uid; } InternalGrant; diff --git a/src/include/utils/builtins.h b/src/include/utils/builtins.h index 81631f1645..7150fabd24 100644 --- a/src/include/utils/builtins.h +++ b/src/include/utils/builtins.h @@ -114,10 +114,12 @@ extern Datum numeric_float8_no_overflow(PG_FUNCTION_ARGS); #define FORMAT_TYPE_FORCE_QUALIFY 0x04 /* force qualification of type */ #define FORMAT_TYPE_INVALID_AS_NULL 0x08 /* NULL if undefined */ extern char *format_type_extended(Oid type_oid, int32 typemod, bits16 flags); +extern char *format_procedure_args(Oid procedure_oid, bool force_qualify); extern char *format_type_be(Oid type_oid); extern char *format_type_be_qualified(Oid type_oid); extern char *format_type_with_typemod(Oid type_oid, int32 typemod); +extern char *printTypmod(const char *typname, int32 typmod, Oid typmodout); extern int32 type_maximum_size(Oid type_oid, int32 typemod); diff --git a/src/include/utils/ruleutils.h b/src/include/utils/ruleutils.h index 7d489718a3..ec6ef80164 100644 --- a/src/include/utils/ruleutils.h +++ b/src/include/utils/ruleutils.h @@ -13,9 +13,12 @@ #ifndef RULEUTILS_H #define RULEUTILS_H +#include "access/htup.h" +#include "catalog/pg_trigger.h" #include "nodes/nodes.h" #include "nodes/parsenodes.h" #include "nodes/pg_list.h" +#include "parser/parse_node.h" struct Plan; /* avoid including plannodes.h here */ struct PlannedStmt; @@ -23,12 +26,20 @@ struct PlannedStmt; extern char *pg_get_indexdef_string(Oid indexrelid); extern char *pg_get_indexdef_columns(Oid indexrelid, bool pretty); +extern char *pg_get_trigger_whenclause(Form_pg_trigger trigrec, + Node *whenClause, bool pretty); extern char *pg_get_querydef(Query *query, bool pretty); +extern char *pg_get_viewdef_internal(Oid viewoid); extern char *pg_get_partkeydef_columns(Oid relid, bool pretty); +extern char *pg_get_partkeydef_simple(Oid relid); extern char *pg_get_partconstrdef_string(Oid partitionId, char *aliasname); extern char *pg_get_constraintdef_command(Oid constraintId); +extern char *pg_get_constraintdef_command_simple(Oid constraintId); +extern void pg_get_ruledef_detailed(Datum ev_qual, Datum ev_action, + char **whereClause, List **actions); + extern char *deparse_expression(Node *expr, List *dpcontext, bool forceprefix, bool showimplicit); extern List *deparse_context_for(const char *aliasname, Oid relid); @@ -40,8 +51,16 @@ extern List *select_rtable_names_for_explain(List *rtable, Bitmapset *rels_used); extern char *generate_collation_name(Oid collid); extern char *generate_opclass_name(Oid opclass); +extern char *generate_function_name(Oid funcid, int nargs, List *argnames, + Oid *argtypes, bool has_variadic, + bool *use_variadic_p, + ParseExprKind special_exprkind); extern char *get_range_partbound_string(List *bound_datums); +extern void get_opclass_name(Oid opclass, Oid actual_datatype, + StringInfo buf); +extern char *flatten_reloptions(Oid relid); extern char *pg_get_statisticsobjdef_string(Oid statextid); +extern void print_function_sqlbody(StringInfo buf, HeapTuple proctup); #endif /* RULEUTILS_H */ diff --git a/src/test/regress/expected/object_address.out b/src/test/regress/expected/object_address.out index dadd58e8b9..3bf9e14f19 100644 --- a/src/test/regress/expected/object_address.out +++ b/src/test/regress/expected/object_address.out @@ -491,7 +491,7 @@ SELECT (pg_identify_object(addr1.classid, addr1.objid, addr1.objsubid)).*, policy | | | genpol on addr_nsp.gentable | t statistics object | addr_nsp | gentable_stat | addr_nsp.gentable_stat | t collation | pg_catalog | "default" | pg_catalog."default" | t - transform | | | for integer on language sql | t + transform | | | for integer language sql | t text search dictionary | addr_nsp | addr_ts_dict | addr_nsp.addr_ts_dict | t text search parser | addr_nsp | addr_ts_prs | addr_nsp.addr_ts_prs | t text search configuration | addr_nsp | addr_ts_conf | addr_nsp.addr_ts_conf | t diff --git a/src/tools/pgindent/typedefs.list b/src/tools/pgindent/typedefs.list index d9b839c979..240d3ae41b 100644 --- a/src/tools/pgindent/typedefs.list +++ b/src/tools/pgindent/typedefs.list @@ -1610,6 +1610,9 @@ OSInfo OSSLCipher OSSLDigest OVERLAPPED +ObjElem +ObjTree +ObjType ObjectAccessDrop ObjectAccessNamespaceSearch ObjectAccessPostAlter @@ -3177,6 +3180,7 @@ compare_context config_var_value contain_aggs_of_level_context convert_testexpr_context +convSpecifier copy_data_dest_cb copy_data_source_cb core_YYSTYPE -- 2.32.0