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First batch of object rename commands.

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This commit is contained in:
Peter Eisentraut
2003-06-27 14:45:32 +00:00
parent 5bac7d11dd
commit b256f24264
60 changed files with 2018 additions and 442 deletions
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46
src/backend/commands/proclang.c
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@ -7,7 +7,7 @@
* Portions Copyright (c) 1994, Regents of the University of California
*
* IDENTIFICATION
* $Header: /cvsroot/pgsql/src/backend/commands/proclang.c,v 1.43 2002/09/21 18:39:25 tgl Exp $
* $Header: /cvsroot/pgsql/src/backend/commands/proclang.c,v 1.44 2003/06/27 14:45:27 petere Exp $
*
*-------------------------------------------------------------------------
*/
@ -231,3 +231,47 @@ DropProceduralLanguageById(Oid langOid)
heap_close(rel, RowExclusiveLock);
}
/*
* Rename language
*/
void
RenameLanguage(const char *oldname, const char *newname)
{
HeapTuple tup;
Relation rel;
rel = heap_openr(ShadowRelationName, RowExclusiveLock);
tup = SearchSysCacheCopy(LANGNAME,
CStringGetDatum(oldname),
0, 0, 0);
if (!HeapTupleIsValid(tup))
ereport(ERROR,
(errcode(ERRCODE_SYNTAX_ERROR_OR_ACCESS_RULE_VIOLATION),
errmsg("language \"%s\" does not exist", oldname)));
/* make sure the new name doesn't exist */
if (SearchSysCacheExists(LANGNAME,
CStringGetDatum(newname),
0, 0, 0))
{
ereport(ERROR,
(errcode(ERRCODE_SYNTAX_ERROR_OR_ACCESS_RULE_VIOLATION),
errmsg("language \"%s\" already exists", newname)));
}
/* must be superuser */
if (!superuser())
ereport(ERROR,
(errcode(ERRCODE_SYNTAX_ERROR_OR_ACCESS_RULE_VIOLATION),
errmsg("permission denied")));
/* rename */
namestrcpy(&(((Form_pg_language) GETSTRUCT(tup))->lanname), newname);
simple_heap_update(rel, &tup->t_self, tup);
CatalogUpdateIndexes(rel, tup);
heap_close(rel, NoLock);
heap_freetuple(tup);
}