79 lines
2.1 KiB
C
79 lines
2.1 KiB
C
/*-------------------------------------------------------------------------
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*
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* pg_namespace.c
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* routines to support manipulation of the pg_namespace relation
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*
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* Portions Copyright (c) 1996-2004, PostgreSQL Global Development Group
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* Portions Copyright (c) 1994, Regents of the University of California
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*
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*
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* IDENTIFICATION
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* $PostgreSQL: pgsql/src/backend/catalog/pg_namespace.c,v 1.10 2004/08/29 04:12:29 momjian Exp $
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*
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*-------------------------------------------------------------------------
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*/
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#include "postgres.h"
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#include "access/heapam.h"
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#include "catalog/catname.h"
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#include "catalog/indexing.h"
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#include "catalog/pg_namespace.h"
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#include "utils/builtins.h"
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#include "utils/syscache.h"
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/* ----------------
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* NamespaceCreate
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* ---------------
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*/
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Oid
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NamespaceCreate(const char *nspName, int32 ownerSysId, Oid nspTablespace)
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{
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Relation nspdesc;
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HeapTuple tup;
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Oid nspoid;
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char nulls[Natts_pg_namespace];
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Datum values[Natts_pg_namespace];
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NameData nname;
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TupleDesc tupDesc;
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int i;
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/* sanity checks */
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if (!nspName)
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elog(ERROR, "no namespace name supplied");
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/* make sure there is no existing namespace of same name */
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if (SearchSysCacheExists(NAMESPACENAME,
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PointerGetDatum(nspName),
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0, 0, 0))
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ereport(ERROR,
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(errcode(ERRCODE_DUPLICATE_SCHEMA),
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errmsg("schema \"%s\" already exists", nspName)));
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/* initialize nulls and values */
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for (i = 0; i < Natts_pg_namespace; i++)
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{
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nulls[i] = ' ';
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values[i] = (Datum) NULL;
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}
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namestrcpy(&nname, nspName);
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values[Anum_pg_namespace_nspname - 1] = NameGetDatum(&nname);
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values[Anum_pg_namespace_nspowner - 1] = Int32GetDatum(ownerSysId);
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values[Anum_pg_namespace_nsptablespace - 1] = Int32GetDatum(nspTablespace);
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nulls[Anum_pg_namespace_nspacl - 1] = 'n';
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nspdesc = heap_openr(NamespaceRelationName, RowExclusiveLock);
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tupDesc = nspdesc->rd_att;
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tup = heap_formtuple(tupDesc, values, nulls);
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nspoid = simple_heap_insert(nspdesc, tup);
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Assert(OidIsValid(nspoid));
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CatalogUpdateIndexes(nspdesc, tup);
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heap_close(nspdesc, RowExclusiveLock);
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return nspoid;
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}
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