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mirror of https://github.com/postgres/postgres.git synced 2025-07-08 11:42:09 +03:00

Standardize get_whatever_oid functions for object types with

unqualified names.

- Add a missing_ok parameter to get_tablespace_oid.
- Avoid duplicating get_tablespace_od guts in objectNamesToOids.
- Add a missing_ok parameter to get_database_oid.
- Replace get_roleid and get_role_checked with get_role_oid.
- Add get_namespace_oid, get_language_oid, get_am_oid.
- Refactor existing code to use new interfaces.

Thanks to KaiGai Kohei for the review.
This commit is contained in:
Robert Haas
2010-08-05 14:45:09 +00:00
parent 641459f269
commit 2a6ef3445c
25 changed files with 259 additions and 437 deletions

View File

@ -9,7 +9,7 @@
*
*
* IDENTIFICATION
* $PostgreSQL: pgsql/src/backend/commands/opclasscmds.c,v 1.69 2010/07/16 00:13:23 tgl Exp $
* $PostgreSQL: pgsql/src/backend/commands/opclasscmds.c,v 1.70 2010/08/05 14:45:01 rhaas Exp $
*
*-------------------------------------------------------------------------
*/
@ -641,7 +641,6 @@ DefineOpFamily(CreateOpFamilyStmt *stmt)
char *opfname; /* name of opfamily we're creating */
Oid amoid, /* our AM's oid */
namespaceoid; /* namespace to create opfamily in */
HeapTuple tup;
AclResult aclresult;
/* Convert list of names to a name and namespace */
@ -654,20 +653,11 @@ DefineOpFamily(CreateOpFamilyStmt *stmt)
aclcheck_error(aclresult, ACL_KIND_NAMESPACE,
get_namespace_name(namespaceoid));
/* Get necessary info about access method */
tup = SearchSysCache1(AMNAME, CStringGetDatum(stmt->amname));
if (!HeapTupleIsValid(tup))
ereport(ERROR,
(errcode(ERRCODE_UNDEFINED_OBJECT),
errmsg("access method \"%s\" does not exist",
stmt->amname)));
amoid = HeapTupleGetOid(tup);
/* Get access method OID, throwing an error if it doesn't exist. */
amoid = get_am_oid(stmt->amname, false);
/* XXX Should we make any privilege check against the AM? */
ReleaseSysCache(tup);
/*
* Currently, we require superuser privileges to create an opfamily. See
* comments in DefineOpClass.
@ -1427,12 +1417,7 @@ RemoveOpClass(RemoveOpClassStmt *stmt)
/*
* Get the access method's OID.
*/
amID = GetSysCacheOid1(AMNAME, CStringGetDatum(stmt->amname));
if (!OidIsValid(amID))
ereport(ERROR,
(errcode(ERRCODE_UNDEFINED_OBJECT),
errmsg("access method \"%s\" does not exist",
stmt->amname)));
amID = get_am_oid(stmt->amname, false);
/*
* Look up the opclass.
@ -1488,12 +1473,7 @@ RemoveOpFamily(RemoveOpFamilyStmt *stmt)
/*
* Get the access method's OID.
*/
amID = GetSysCacheOid1(AMNAME, CStringGetDatum(stmt->amname));
if (!OidIsValid(amID))
ereport(ERROR,
(errcode(ERRCODE_UNDEFINED_OBJECT),
errmsg("access method \"%s\" does not exist",
stmt->amname)));
amID = get_am_oid(stmt->amname, false);
/*
* Look up the opfamily.
@ -1650,12 +1630,7 @@ RenameOpClass(List *name, const char *access_method, const char *newname)
Relation rel;
AclResult aclresult;
amOid = GetSysCacheOid1(AMNAME, CStringGetDatum(access_method));
if (!OidIsValid(amOid))
ereport(ERROR,
(errcode(ERRCODE_UNDEFINED_OBJECT),
errmsg("access method \"%s\" does not exist",
access_method)));
amOid = get_am_oid(access_method, false);
rel = heap_open(OperatorClassRelationId, RowExclusiveLock);
@ -1744,12 +1719,7 @@ RenameOpFamily(List *name, const char *access_method, const char *newname)
Relation rel;
AclResult aclresult;
amOid = GetSysCacheOid1(AMNAME, CStringGetDatum(access_method));
if (!OidIsValid(amOid))
ereport(ERROR,
(errcode(ERRCODE_UNDEFINED_OBJECT),
errmsg("access method \"%s\" does not exist",
access_method)));
amOid = get_am_oid(access_method, false);
rel = heap_open(OperatorFamilyRelationId, RowExclusiveLock);
@ -1835,12 +1805,7 @@ AlterOpClassOwner(List *name, const char *access_method, Oid newOwnerId)
char *opcname;
char *schemaname;
amOid = GetSysCacheOid1(AMNAME, CStringGetDatum(access_method));
if (!OidIsValid(amOid))
ereport(ERROR,
(errcode(ERRCODE_UNDEFINED_OBJECT),
errmsg("access method \"%s\" does not exist",
access_method)));
amOid = get_am_oid(access_method, false);
rel = heap_open(OperatorClassRelationId, RowExclusiveLock);
@ -1978,12 +1943,7 @@ AlterOpFamilyOwner(List *name, const char *access_method, Oid newOwnerId)
char *opfname;
char *schemaname;
amOid = GetSysCacheOid1(AMNAME, CStringGetDatum(access_method));
if (!OidIsValid(amOid))
ereport(ERROR,
(errcode(ERRCODE_UNDEFINED_OBJECT),
errmsg("access method \"%s\" does not exist",
access_method)));
amOid = get_am_oid(access_method, false);
rel = heap_open(OperatorFamilyRelationId, RowExclusiveLock);
@ -2108,3 +2068,22 @@ AlterOpFamilyOwner_internal(Relation rel, HeapTuple tup, Oid newOwnerId)
newOwnerId);
}
}
/*
* get_am_oid - given an access method name, look up the OID
*
* If missing_ok is false, throw an error if access method not found. If
* true, just return InvalidOid.
*/
Oid
get_am_oid(const char *amname, bool missing_ok)
{
Oid oid;
oid = GetSysCacheOid1(AMNAME, CStringGetDatum(amname));
if (!OidIsValid(oid) && !missing_ok)
ereport(ERROR,
(errcode(ERRCODE_UNDEFINED_OBJECT),
errmsg("access method \"%s\" does not exist", amname)));
return oid;
}