diff options
Diffstat (limited to 'src/backend/commands/comment.c')
| -rw-r--r-- | src/backend/commands/comment.c | 93 |
1 files changed, 92 insertions, 1 deletions
diff --git a/src/backend/commands/comment.c b/src/backend/commands/comment.c index 6d6eff7f48d..2f6a38d42d2 100644 --- a/src/backend/commands/comment.c +++ b/src/backend/commands/comment.c @@ -7,7 +7,7 @@ * Copyright (c) 1996-2007, PostgreSQL Global Development Group * * IDENTIFICATION - * $PostgreSQL: pgsql/src/backend/commands/comment.c,v 1.94 2007/01/05 22:19:25 momjian Exp $ + * $PostgreSQL: pgsql/src/backend/commands/comment.c,v 1.95 2007/01/23 05:07:17 tgl Exp $ * *------------------------------------------------------------------------- */ @@ -28,6 +28,7 @@ #include "catalog/pg_namespace.h" #include "catalog/pg_opclass.h" #include "catalog/pg_operator.h" +#include "catalog/pg_opfamily.h" #include "catalog/pg_proc.h" #include "catalog/pg_rewrite.h" #include "catalog/pg_shdescription.h" @@ -72,6 +73,7 @@ static void CommentConstraint(List *qualname, char *comment); static void CommentConversion(List *qualname, char *comment); static void CommentLanguage(List *qualname, char *comment); static void CommentOpClass(List *qualname, List *arguments, char *comment); +static void CommentOpFamily(List *qualname, List *arguments, char *comment); static void CommentLargeObject(List *qualname, char *comment); static void CommentCast(List *qualname, List *arguments, char *comment); static void CommentTablespace(List *qualname, char *comment); @@ -134,6 +136,9 @@ CommentObject(CommentStmt *stmt) case OBJECT_OPCLASS: CommentOpClass(stmt->objname, stmt->objargs, stmt->comment); break; + case OBJECT_OPFAMILY: + CommentOpFamily(stmt->objname, stmt->objargs, stmt->comment); + break; case OBJECT_LARGEOBJECT: CommentLargeObject(stmt->objname, stmt->comment); break; @@ -1264,6 +1269,92 @@ CommentOpClass(List *qualname, List *arguments, char *comment) } /* + * CommentOpFamily -- + * + * This routine is used to allow a user to provide comments on an + * operator family. The operator family for commenting is determined by both + * its name and its argument list which defines the index method + * the operator family is used for. The argument list is expected to contain + * a single name (represented as a string Value node). + */ +static void +CommentOpFamily(List *qualname, List *arguments, char *comment) +{ + char *amname; + char *schemaname; + char *opfname; + Oid amID; + Oid opfID; + HeapTuple tuple; + + Assert(list_length(arguments) == 1); + amname = strVal(linitial(arguments)); + + /* + * Get the access method's OID. + */ + amID = GetSysCacheOid(AMNAME, + CStringGetDatum(amname), + 0, 0, 0); + if (!OidIsValid(amID)) + ereport(ERROR, + (errcode(ERRCODE_UNDEFINED_OBJECT), + errmsg("access method \"%s\" does not exist", + amname))); + + /* + * Look up the opfamily. + */ + + /* deconstruct the name list */ + DeconstructQualifiedName(qualname, &schemaname, &opfname); + + if (schemaname) + { + /* Look in specific schema only */ + Oid namespaceId; + + namespaceId = LookupExplicitNamespace(schemaname); + tuple = SearchSysCache(OPFAMILYAMNAMENSP, + ObjectIdGetDatum(amID), + PointerGetDatum(opfname), + ObjectIdGetDatum(namespaceId), + 0); + } + else + { + /* Unqualified opfamily name, so search the search path */ + opfID = OpfamilynameGetOpfid(amID, opfname); + if (!OidIsValid(opfID)) + ereport(ERROR, + (errcode(ERRCODE_UNDEFINED_OBJECT), + errmsg("operator family \"%s\" does not exist for access method \"%s\"", + opfname, amname))); + tuple = SearchSysCache(OPFAMILYOID, + ObjectIdGetDatum(opfID), + 0, 0, 0); + } + + if (!HeapTupleIsValid(tuple)) + ereport(ERROR, + (errcode(ERRCODE_UNDEFINED_OBJECT), + errmsg("operator family \"%s\" does not exist for access method \"%s\"", + NameListToString(qualname), amname))); + + opfID = HeapTupleGetOid(tuple); + + /* Permission check: must own opfamily */ + if (!pg_opfamily_ownercheck(opfID, GetUserId())) + aclcheck_error(ACLCHECK_NOT_OWNER, ACL_KIND_OPFAMILY, + NameListToString(qualname)); + + ReleaseSysCache(tuple); + + /* Call CreateComments() to create/drop the comments */ + CreateComments(opfID, OperatorFamilyRelationId, 0, comment); +} + +/* * CommentLargeObject -- * * This routine is used to add/drop any user-comments a user might |