greenplumn pg_extension 源码
greenplumn pg_extension 代码
文件路径：/src/include/catalog/pg_extension.h
/*-------------------------------------------------------------------------
*
* pg_extension.h
* definition of the "extension" system catalog (pg_extension)
*
*
* Portions Copyright (c) 1996-2019, PostgreSQL Global Development Group
* Portions Copyright (c) 1994, Regents of the University of California
*
* src/include/catalog/pg_extension.h
*
* NOTES
* The Catalog.pm module reads this file and derives schema
* information.
*
*-------------------------------------------------------------------------
*/
#ifndef PG_EXTENSION_H
#define PG_EXTENSION_H
#include "catalog/genbki.h"
#include "catalog/pg_extension_d.h"
/* ----------------
* pg_extension definition. cpp turns this into
* typedef struct FormData_pg_extension
* ----------------
*/
CATALOG(pg_extension,3079,ExtensionRelationId)
{
Oid oid; /* oid */
NameData extname; /* extension name */
Oid extowner; /* extension owner */
Oid extnamespace; /* namespace of contained objects */
bool extrelocatable; /* if true, allow ALTER EXTENSION SET SCHEMA */
#ifdef CATALOG_VARLEN /* variable-length fields start here */
/* extversion may never be null, but the others can be. */
text extversion BKI_FORCE_NOT_NULL; /* extension version name */
Oid extconfig[1]; /* dumpable configuration tables */
text extcondition[1]; /* WHERE clauses for config tables */
#endif
} FormData_pg_extension;
/* GPDB added foreign key definitions for gpcheckcat. */
FOREIGN_KEY(extowner REFERENCES pg_authid(oid));
FOREIGN_KEY(extnamespace REFERENCES pg_namespace(oid));
/* ----------------
* Form_pg_extension corresponds to a pointer to a tuple with
* the format of pg_extension relation.
* ----------------
*/
typedef FormData_pg_extension *Form_pg_extension;
#endif /* PG_EXTENSION_H */
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