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/*-------------------------------------------------------------------------
*
* pg_shdepend.h
* definition of the "shared dependency" system catalog (pg_shdepend)
*
* pg_shdepend has no preloaded contents, so there is no pg_shdepend.dat
* file; dependencies for system-defined objects are loaded into it
* on-the-fly during initdb. Most built-in objects are pinned anyway,
* and hence need no explicit entries in pg_shdepend.
*
* NOTE: we do not represent all possible dependency pairs in pg_shdepend;
* for example, there's not much value in creating an explicit dependency
* from a relation to its database. Currently, only dependencies on roles
* are explicitly stored in pg_shdepend.
*
* Portions Copyright (c) 1996-2023, PostgreSQL Global Development Group
* Portions Copyright (c) 1994, Regents of the University of California
*
* src/include/catalog/pg_shdepend.h
*
* NOTES
* The Catalog.pm module reads this file and derives schema
* information.
*
*-------------------------------------------------------------------------
*/
#ifndef PG_SHDEPEND_H
#define PG_SHDEPEND_H
#include "catalog/genbki.h"
#include "catalog/pg_shdepend_d.h"
/* ----------------
* pg_shdepend definition. cpp turns this into
* typedef struct FormData_pg_shdepend
* ----------------
*/
CATALOG(pg_shdepend,1214,SharedDependRelationId) BKI_SHARED_RELATION
{
/*
* Identification of the dependent (referencing) object.
*
* Note that dbid can be zero to denote a shared object.
*/
Oid dbid BKI_LOOKUP_OPT(pg_database); /* OID of database
* containing object */
Oid classid BKI_LOOKUP(pg_class); /* OID of table containing
* object */
Oid objid; /* OID of object itself */
int32 objsubid; /* column number, or 0 if not used */
/*
* Identification of the independent (referenced) object. This is always
* a shared object, so we need no database ID field. We don't bother with
* a sub-object ID either.
*/
Oid refclassid BKI_LOOKUP(pg_class); /* OID of table containing
* object */
Oid refobjid; /* OID of object itself */
/*
* Precise semantics of the relationship are specified by the deptype
* field. See SharedDependencyType in catalog/dependency.h.
*/
char deptype; /* see codes in dependency.h */
} FormData_pg_shdepend;
/* ----------------
* Form_pg_shdepend corresponds to a pointer to a row with
* the format of pg_shdepend relation.
* ----------------
*/
typedef FormData_pg_shdepend *Form_pg_shdepend;
DECLARE_INDEX(pg_shdepend_depender_index, 1232, SharedDependDependerIndexId, on pg_shdepend using btree(dbid oid_ops, classid oid_ops, objid oid_ops, objsubid int4_ops));
DECLARE_INDEX(pg_shdepend_reference_index, 1233, SharedDependReferenceIndexId, on pg_shdepend using btree(refclassid oid_ops, refobjid oid_ops));
#endif /* PG_SHDEPEND_H */
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