mirror of https://github.com/postgres/postgres
there and CREATE SCHEMA will make entries in it...ecpg_big_bison
Tom Lane
24 years ago
parent
48c9164901
commit
a25b94c080
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/*-------------------------------------------------------------------------
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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) 1996-2001, 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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* $Header: /cvsroot/pgsql/src/backend/catalog/pg_namespace.c,v 1.1 2002/03/22 21:34:44 tgl 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 "miscadmin.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) |
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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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elog(ERROR, "namespace \"%s\" already exists", nspName); |
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|
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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(GetUserId()); |
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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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if (!HeapTupleIsValid(tup = heap_formtuple(tupDesc, |
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values, |
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nulls))) |
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elog(ERROR, "NamespaceCreate: heap_formtuple failed"); |
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nspoid = heap_insert(nspdesc, tup); |
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if (!OidIsValid(nspoid)) |
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elog(ERROR, "NamespaceCreate: heap_insert failed"); |
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if (RelationGetForm(nspdesc)->relhasindex) |
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{ |
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Relation idescs[Num_pg_namespace_indices]; |
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CatalogOpenIndices(Num_pg_namespace_indices, Name_pg_namespace_indices, idescs); |
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CatalogIndexInsert(idescs, Num_pg_namespace_indices, nspdesc, tup); |
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CatalogCloseIndices(Num_pg_namespace_indices, idescs); |
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} |
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heap_close(nspdesc, RowExclusiveLock); |
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return nspoid; |
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} |
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@ -0,0 +1,79 @@ |
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/*-------------------------------------------------------------------------
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* |
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* pg_namespace.h |
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* definition of the system "namespace" relation (pg_namespace) |
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* along with the relation's initial contents. |
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* |
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* |
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* Portions Copyright (c) 1996-2001, 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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* $Id: pg_namespace.h,v 1.1 2002/03/22 21:34:44 tgl Exp $ |
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* |
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* NOTES |
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* the genbki.sh script reads this file and generates .bki |
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* information from the DATA() statements. |
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* |
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*------------------------------------------------------------------------- |
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*/ |
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#ifndef PG_NAMESPACE_H |
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#define PG_NAMESPACE_H |
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/* ----------------
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* postgres.h contains the system type definitions and the |
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* CATALOG(), BOOTSTRAP and DATA() sugar words so this file |
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* can be read by both genbki.sh and the C compiler. |
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* ---------------- |
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*/ |
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/* ----------------------------------------------------------------
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* pg_namespace definition. |
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* |
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* cpp turns this into typedef struct FormData_pg_namespace |
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* |
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* nspname name of the namespace |
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* nspowner owner (creator) of the namespace |
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* nspacl access privilege list |
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* ---------------------------------------------------------------- |
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*/ |
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CATALOG(pg_namespace) |
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{ |
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NameData nspname; |
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int4 nspowner; |
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aclitem nspacl[1]; /* VARIABLE LENGTH FIELD */ |
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} FormData_pg_namespace; |
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/* ----------------
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* Form_pg_namespace corresponds to a pointer to a tuple with |
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* the format of pg_namespace relation. |
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* ---------------- |
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*/ |
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typedef FormData_pg_namespace *Form_pg_namespace; |
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/* ----------------
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* compiler constants for pg_namespace |
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* ---------------- |
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*/ |
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#define Natts_pg_namespace 3 |
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#define Anum_pg_namespace_nspname 1 |
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#define Anum_pg_namespace_nspowner 2 |
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#define Anum_pg_namespace_nspacl 3 |
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/* ----------------
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* initial contents of pg_namespace |
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* --------------- |
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*/ |
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DATA(insert OID = 11 ( "pg_catalog" PGUID "{=r}" )); |
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DESCR("System catalog namespace"); |
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#define PG_CATALOG_NAMESPACE 11 |
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/*
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* prototypes for functions in pg_namespace.c |
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*/ |
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extern Oid NamespaceCreate(const char *nspName); |
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#endif /* PG_NAMESPACE_H */ |
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