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Create the pg_namespace system catalog. Doesn't do much yet, but it's

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there and CREATE SCHEMA will make entries in it...
This commit is contained in:
Tom Lane
2002-03-22 21:34:44 +00:00
parent 48c9164901
commit a25b94c080
13 changed files with 285 additions and 35 deletions
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85
src/backend/catalog/pg_namespace.c Normal file
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/*-------------------------------------------------------------------------
*
* pg_namespace.c
* routines to support manipulation of the pg_namespace relation
*
* Portions Copyright (c) 1996-2001, PostgreSQL Global Development Group
* Portions Copyright (c) 1994, Regents of the University of California
*
*
* IDENTIFICATION
* $Header: /cvsroot/pgsql/src/backend/catalog/pg_namespace.c,v 1.1 2002/03/22 21:34:44 tgl Exp $
*
*-------------------------------------------------------------------------
*/
#include "postgres.h"
#include "access/heapam.h"
#include "catalog/catname.h"
#include "catalog/indexing.h"
#include "catalog/pg_namespace.h"
#include "miscadmin.h"
#include "utils/builtins.h"
#include "utils/syscache.h"
/* ----------------
* NamespaceCreate
* ---------------
*/
Oid
NamespaceCreate(const char *nspName)
{
Relation nspdesc;
HeapTuple tup;
Oid nspoid;
char nulls[Natts_pg_namespace];
Datum values[Natts_pg_namespace];
NameData nname;
TupleDesc tupDesc;
int i;
/* sanity checks */
if (!nspName)
elog(ERROR, "no namespace name supplied");
/* make sure there is no existing namespace of same name */
if (SearchSysCacheExists(NAMESPACENAME,
PointerGetDatum(nspName),
0, 0, 0))
elog(ERROR, "namespace \"%s\" already exists", nspName);
/* initialize nulls and values */
for (i = 0; i < Natts_pg_namespace; i++)
{
nulls[i] = ' ';
values[i] = (Datum) NULL;
}
namestrcpy(&nname, nspName);
values[Anum_pg_namespace_nspname - 1] = NameGetDatum(&nname);
values[Anum_pg_namespace_nspowner - 1] = Int32GetDatum(GetUserId());
nulls[Anum_pg_namespace_nspacl - 1] = 'n';
nspdesc = heap_openr(NamespaceRelationName, RowExclusiveLock);
tupDesc = nspdesc->rd_att;
if (!HeapTupleIsValid(tup = heap_formtuple(tupDesc,
values,
nulls)))
elog(ERROR, "NamespaceCreate: heap_formtuple failed");
nspoid = heap_insert(nspdesc, tup);
if (!OidIsValid(nspoid))
elog(ERROR, "NamespaceCreate: heap_insert failed");
if (RelationGetForm(nspdesc)->relhasindex)
{
Relation idescs[Num_pg_namespace_indices];
CatalogOpenIndices(Num_pg_namespace_indices, Name_pg_namespace_indices, idescs);
CatalogIndexInsert(idescs, Num_pg_namespace_indices, nspdesc, tup);
CatalogCloseIndices(Num_pg_namespace_indices, idescs);
}
heap_close(nspdesc, RowExclusiveLock);
return nspoid;
}