greenplumn pg_namespace 源码
greenplumn pg_namespace 代码
文件路径：/src/include/catalog/pg_namespace.h
/*-------------------------------------------------------------------------
*
* pg_namespace.h
* definition of the "namespace" system catalog (pg_namespace)
*
*
* Portions Copyright (c) 1996-2019, PostgreSQL Global Development Group
* Portions Copyright (c) 1994, Regents of the University of California
*
* src/include/catalog/pg_namespace.h
*
* NOTES
* The Catalog.pm module reads this file and derives schema
* information.
*
*-------------------------------------------------------------------------
*/
#ifndef PG_NAMESPACE_H
#define PG_NAMESPACE_H
#include "catalog/genbki.h"
#include "catalog/pg_namespace_d.h"
/* ----------------------------------------------------------------
* pg_namespace definition.
*
* cpp turns this into typedef struct FormData_pg_namespace
*
* nspname name of the namespace
* nspowner owner (creator) of the namespace
* nspacl access privilege list
* ----------------------------------------------------------------
*/
CATALOG(pg_namespace,2615,NamespaceRelationId)
{
Oid oid; /* oid */
NameData nspname;
Oid nspowner;
#ifdef CATALOG_VARLEN /* variable-length fields start here */
aclitem nspacl[1];
#endif
} FormData_pg_namespace;
/* GPDB added foreign key definitions for gpcheckcat. */
FOREIGN_KEY(nspowner REFERENCES pg_authid(oid));
/* ----------------
* Form_pg_namespace corresponds to a pointer to a tuple with
* the format of pg_namespace relation.
* ----------------
*/
typedef FormData_pg_namespace *Form_pg_namespace;
#define IsBuiltInNameSpace(namespaceId) \
(namespaceId == PG_CATALOG_NAMESPACE || \
namespaceId == PG_TOAST_NAMESPACE || \
namespaceId == PG_BITMAPINDEX_NAMESPACE || \
namespaceId == PG_PUBLIC_NAMESPACE || \
namespaceId == PG_AOSEGMENT_NAMESPACE)
/*
* prototypes for functions in pg_namespace.c
*/
extern Oid NamespaceCreate(const char *nspName, Oid ownerId, bool isTemp);
#endif /* PG_NAMESPACE_H */
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