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91 lines
2.8 KiB
C
91 lines
2.8 KiB
C
/*-------------------------------------------------------------------------
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*
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* pg_shdepend.h
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* definition of the system "shared dependency" relation (pg_shdepend)
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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) 1996-2015, 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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* src/include/catalog/pg_shdepend.h
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*
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* NOTES
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* the genbki.pl 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_SHDEPEND_H
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#define PG_SHDEPEND_H
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#include "catalog/genbki.h"
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/* ----------------
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* pg_shdepend definition. cpp turns this into
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* typedef struct FormData_pg_shdepend
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* ----------------
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*/
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#define SharedDependRelationId 1214
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CATALOG(pg_shdepend,1214) BKI_SHARED_RELATION BKI_WITHOUT_OIDS
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{
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/*
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* Identification of the dependent (referencing) object.
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*
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* These fields are all zeroes for a DEPENDENCY_PIN entry. Also, dbid can
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* be zero to denote a shared object.
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*/
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Oid dbid; /* OID of database containing object */
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Oid classid; /* OID of table containing object */
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Oid objid; /* OID of object itself */
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int32 objsubid; /* column number, or 0 if not used */
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/*
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* Identification of the independent (referenced) object. This is always
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* a shared object, so we need no database ID field. We don't bother with
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* a sub-object ID either.
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*/
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Oid refclassid; /* OID of table containing object */
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Oid refobjid; /* OID of object itself */
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/*
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* Precise semantics of the relationship are specified by the deptype
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* field. See SharedDependencyType in catalog/dependency.h.
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*/
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char deptype; /* see codes in dependency.h */
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} FormData_pg_shdepend;
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/* ----------------
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* Form_pg_shdepend corresponds to a pointer to a row with
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* the format of pg_shdepend relation.
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* ----------------
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*/
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typedef FormData_pg_shdepend *Form_pg_shdepend;
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/* ----------------
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* compiler constants for pg_shdepend
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* ----------------
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*/
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#define Natts_pg_shdepend 7
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#define Anum_pg_shdepend_dbid 1
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#define Anum_pg_shdepend_classid 2
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#define Anum_pg_shdepend_objid 3
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#define Anum_pg_shdepend_objsubid 4
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#define Anum_pg_shdepend_refclassid 5
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#define Anum_pg_shdepend_refobjid 6
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#define Anum_pg_shdepend_deptype 7
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/*
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* pg_shdepend has no preloaded contents; system-defined dependencies are
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* loaded into it during a late stage of the initdb process.
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*
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* NOTE: we do not represent all possible dependency pairs in pg_shdepend;
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* for example, there's not much value in creating an explicit dependency
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* from a relation to its database. Currently, only dependencies on roles
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* are explicitly stored in pg_shdepend.
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*/
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#endif /* PG_SHDEPEND_H */
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