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Add ALTER FOREIGN DATA WRAPPER / RENAME and ALTER SERVER / RENAME

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This commit is contained in:
Peter Eisentraut
2011-12-09 20:42:30 +02:00
parent 9f0d2bdc88
commit 5bcf8ede45
8 changed files with 183 additions and 1 deletions
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76
src/backend/commands/foreigncmds.c
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@ -200,6 +200,82 @@ GetUserOidFromMapping(const char *username, bool missing_ok)
}
/*
* Rename foreign-data wrapper
*/
void
RenameForeignDataWrapper(const char *oldname, const char *newname)
{
HeapTuple tup;
Relation rel;
rel = heap_open(ForeignDataWrapperRelationId, RowExclusiveLock);
tup = SearchSysCacheCopy1(FOREIGNDATAWRAPPERNAME, CStringGetDatum(oldname));
if (!HeapTupleIsValid(tup))
ereport(ERROR,
(errcode(ERRCODE_UNDEFINED_OBJECT),
errmsg("foreign-data wrapper \"%s\" does not exist", oldname)));
/* make sure the new name doesn't exist */
if (SearchSysCacheExists1(FOREIGNDATAWRAPPERNAME, CStringGetDatum(newname)))
ereport(ERROR,
(errcode(ERRCODE_DUPLICATE_OBJECT),
errmsg("foreign-data wrapper \"%s\" already exists", newname)));
/* must be owner of FDW */
if (!pg_foreign_data_wrapper_ownercheck(HeapTupleGetOid(tup), GetUserId()))
aclcheck_error(ACLCHECK_NOT_OWNER, ACL_KIND_FDW,
oldname);
/* rename */
namestrcpy(&(((Form_pg_foreign_data_wrapper) GETSTRUCT(tup))->fdwname), newname);
simple_heap_update(rel, &tup->t_self, tup);
CatalogUpdateIndexes(rel, tup);
heap_close(rel, NoLock);
heap_freetuple(tup);
}
/*
* Rename foreign server
*/
void
RenameForeignServer(const char *oldname, const char *newname)
{
HeapTuple tup;
Relation rel;
rel = heap_open(ForeignServerRelationId, RowExclusiveLock);
tup = SearchSysCacheCopy1(FOREIGNSERVERNAME, CStringGetDatum(oldname));
if (!HeapTupleIsValid(tup))
ereport(ERROR,
(errcode(ERRCODE_UNDEFINED_OBJECT),
errmsg("server \"%s\" does not exist", oldname)));
/* make sure the new name doesn't exist */
if (SearchSysCacheExists1(FOREIGNSERVERNAME, CStringGetDatum(newname)))
ereport(ERROR,
(errcode(ERRCODE_DUPLICATE_OBJECT),
errmsg("server \"%s\" already exists", newname)));
/* must be owner of server */
if (!pg_foreign_server_ownercheck(HeapTupleGetOid(tup), GetUserId()))
aclcheck_error(ACLCHECK_NOT_OWNER, ACL_KIND_FOREIGN_SERVER,
oldname);
/* rename */
namestrcpy(&(((Form_pg_foreign_server) GETSTRUCT(tup))->srvname), newname);
simple_heap_update(rel, &tup->t_self, tup);
CatalogUpdateIndexes(rel, tup);
heap_close(rel, NoLock);
heap_freetuple(tup);
}
/*
* Change foreign-data wrapper owner.
*