First batch of object rename commands.

2025-07-12 21:01:52 +03:00 · 2003-06-27 14:45:32 +00:00
parent 5bac7d11dd
commit b256f24264
60 changed files with 2018 additions and 442 deletions
--- a/src/backend/commands/alter.c
+++ b/src/backend/commands/alter.c
@ -0,0 +1,159 @@
+/*-------------------------------------------------------------------------
+ *
+ * alter.c
+ *	  Drivers for generic alter commands
+ *
+ * Portions Copyright (c) 1996-2003, PostgreSQL Global Development Group
+ * Portions Copyright (c) 1994, Regents of the University of California
+ *
+ *
+ * IDENTIFICATION
+ *	  $Header: /cvsroot/pgsql/src/backend/commands/alter.c,v 1.1 2003/06/27 14:45:27 petere Exp $
+ *
+ *-------------------------------------------------------------------------
+ */
+#include "postgres.h"
+
+#include "access/htup.h"
+#include "catalog/catalog.h"
+#include "catalog/namespace.h"
+#include "catalog/pg_class.h"
+#include "commands/alter.h"
+#include "commands/conversioncmds.h"
+#include "commands/dbcommands.h"
+#include "commands/defrem.h"
+#include "commands/proclang.h"
+#include "commands/schemacmds.h"
+#include "commands/tablecmds.h"
+#include "commands/trigger.h"
+#include "commands/user.h"
+#include "miscadmin.h"
+#include "parser/parse_clause.h"
+#include "utils/acl.h"
+#include "utils/lsyscache.h"
+#include "utils/syscache.h"
+
+
+static void
+CheckOwnership(RangeVar *rel, bool noCatalogs)
+{
+	Oid			relOid;
+	HeapTuple	tuple;
+
+	relOid = RangeVarGetRelid(rel, false);
+	tuple = SearchSysCache(RELOID,
+						   ObjectIdGetDatum(relOid),
+						   0, 0, 0);
+	if (!HeapTupleIsValid(tuple))
+		elog(ERROR, "Relation \"%s\" does not exist", rel->relname);
+
+	if (!pg_class_ownercheck(relOid, GetUserId()))
+		aclcheck_error(ACLCHECK_NOT_OWNER, rel->relname);
+
+	if (noCatalogs)
+	{
+		if (!allowSystemTableMods &&
+			IsSystemClass((Form_pg_class) GETSTRUCT(tuple)))
+			elog(ERROR, "relation \"%s\" is a system catalog",
+				 rel->relname);
+	}
+
+	ReleaseSysCache(tuple);
+}
+
+
+void
+ExecRenameStmt(RenameStmt *stmt)
+{
+	switch (stmt->renameType)
+	{
+		case OBJECT_AGGREGATE:
+			RenameAggregate(stmt->object, (TypeName *) lfirst(stmt->objarg), stmt->newname);
+			break;
+
+		case OBJECT_CONVERSION:
+			RenameConversion(stmt->object, stmt->newname);
+			break;
+
+		case OBJECT_DATABASE:
+			RenameDatabase(stmt->subname, stmt->newname);
+			break;
+
+		case OBJECT_FUNCTION:
+			RenameFunction(stmt->object, stmt->objarg, stmt->newname);
+			break;
+
+		case OBJECT_GROUP:
+			RenameGroup(stmt->subname, stmt->newname);
+			break;
+
+		case OBJECT_LANGUAGE:
+			RenameLanguage(stmt->subname, stmt->newname);
+			break;
+
+		case OBJECT_OPCLASS:
+			RenameOpClass(stmt->object, stmt->subname, stmt->newname);
+			break;
+
+		case OBJECT_SCHEMA:
+			RenameSchema(stmt->subname, stmt->newname);
+			break;
+
+		case OBJECT_USER:
+			RenameUser(stmt->subname, stmt->newname);
+			break;
+
+		case OBJECT_TABLE:
+		case OBJECT_COLUMN:
+		case OBJECT_TRIGGER:
+		{
+			Oid			relid;
+
+			CheckOwnership(stmt->relation, true);
+
+			relid = RangeVarGetRelid(stmt->relation, false);
+
+			switch (stmt->renameType)
+			{
+				case OBJECT_TABLE:
+				{
+					/*
+					 * RENAME TABLE requires that we (still) hold
+					 * CREATE rights on the containing namespace, as
+					 * well as ownership of the table.
+					 */
+					Oid			namespaceId = get_rel_namespace(relid);
+					AclResult	aclresult;
+
+					aclresult = pg_namespace_aclcheck(namespaceId,
+													  GetUserId(),
+													  ACL_CREATE);
+					if (aclresult != ACLCHECK_OK)
+						aclcheck_error(aclresult,
+									   get_namespace_name(namespaceId));
+
+					renamerel(relid, stmt->newname);
+					break;
+				}
+				case OBJECT_COLUMN:
+					renameatt(relid,
+							  stmt->subname,		/* old att name */
+							  stmt->newname,		/* new att name */
+							  interpretInhOption(stmt->relation->inhOpt),		/* recursive? */
+							  false);		/* recursing already? */
+					break;
+				case OBJECT_TRIGGER:
+					renametrig(relid,
+							   stmt->subname,		/* old att name */
+							   stmt->newname);		/* new att name */
+					break;
+				default:
+					/*can't happen*/;
+			}
+			break;
+		}
+
+		default:
+			elog(ERROR, "invalid object type for RenameStmt: %d", stmt->renameType);
+	}
+}