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Refactor ALTER some-obj RENAME implementation

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Remove duplicate implementations of catalog munging and miscellaneous
privilege checks.  Instead rely on already existing data in
objectaddress.c to do the work.

Author: KaiGai Kohei, changes by me
Reviewed by: Robert Haas, Álvaro Herrera, Dimitri Fontaine
This commit is contained in:
Alvaro Herrera
2013-01-21 12:06:41 -03:00
parent 8f0d8f481e
commit 765cbfdc92
19 changed files with 354 additions and 857 deletions
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87
src/backend/commands/foreigncmds.c
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@ -200,93 +200,6 @@ GetUserOidFromMapping(const char *username, bool missing_ok)
return get_role_oid(username, missing_ok);
}
/*
* Rename foreign-data wrapper
*/
Oid
RenameForeignDataWrapper(const char *oldname, const char *newname)
{
Oid fdwId;
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)));
fdwId = HeapTupleGetOid(tup);
/* 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);
return fdwId;
}
/*
* Rename foreign server
*/
Oid
RenameForeignServer(const char *oldname, const char *newname)
{
Oid srvId;
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)));
srvId = HeapTupleGetOid(tup);
/* 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);
return srvId;
}
/*
* Internal workhorse for changing a data wrapper's owner.
*