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111 lines
4.1 KiB
C
111 lines
4.1 KiB
C
/*-------------------------------------------------------------------------
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*
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* pg_trigger.h
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* definition of the system "trigger" relation (pg_trigger)
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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) 1996-2008, 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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* $PostgreSQL: pgsql/src/include/catalog/pg_trigger.h,v 1.32 2008/03/28 00:21:56 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_TRIGGER_H
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#define PG_TRIGGER_H
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#include "catalog/genbki.h"
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/* ----------------
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* pg_trigger definition. cpp turns this into
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* typedef struct FormData_pg_trigger
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*
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* Note: when tgconstraint is nonzero, tgisconstraint must be true, and
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* tgconstrname, tgconstrrelid, tgdeferrable, tginitdeferred are redundant
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* with the referenced pg_constraint entry. The reason we keep these fields
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* is that we support "stand-alone" constraint triggers with no corresponding
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* pg_constraint entry.
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* ----------------
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*/
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#define TriggerRelationId 2620
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CATALOG(pg_trigger,2620)
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{
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Oid tgrelid; /* relation trigger is attached to */
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NameData tgname; /* trigger's name */
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Oid tgfoid; /* OID of function to be called */
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int2 tgtype; /* BEFORE/AFTER UPDATE/DELETE/INSERT
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* ROW/STATEMENT; see below */
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char tgenabled; /* trigger's firing configuration WRT
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* session_replication_role */
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bool tgisconstraint; /* trigger is a constraint trigger */
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NameData tgconstrname; /* constraint name */
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Oid tgconstrrelid; /* constraint's FROM table, if any */
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Oid tgconstraint; /* owning pg_constraint entry, if any */
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bool tgdeferrable; /* constraint trigger is deferrable */
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bool tginitdeferred; /* constraint trigger is deferred initially */
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int2 tgnargs; /* # of extra arguments in tgargs */
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/* VARIABLE LENGTH FIELDS: */
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int2vector tgattr; /* reserved for column-specific triggers */
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bytea tgargs; /* first\000second\000tgnargs\000 */
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} FormData_pg_trigger;
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/* ----------------
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* Form_pg_trigger corresponds to a pointer to a tuple with
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* the format of pg_trigger relation.
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* ----------------
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*/
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typedef FormData_pg_trigger *Form_pg_trigger;
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/* ----------------
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* compiler constants for pg_trigger
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* ----------------
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*/
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#define Natts_pg_trigger 14
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#define Anum_pg_trigger_tgrelid 1
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#define Anum_pg_trigger_tgname 2
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#define Anum_pg_trigger_tgfoid 3
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#define Anum_pg_trigger_tgtype 4
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#define Anum_pg_trigger_tgenabled 5
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#define Anum_pg_trigger_tgisconstraint 6
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#define Anum_pg_trigger_tgconstrname 7
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#define Anum_pg_trigger_tgconstrrelid 8
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#define Anum_pg_trigger_tgconstraint 9
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#define Anum_pg_trigger_tgdeferrable 10
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#define Anum_pg_trigger_tginitdeferred 11
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#define Anum_pg_trigger_tgnargs 12
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#define Anum_pg_trigger_tgattr 13
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#define Anum_pg_trigger_tgargs 14
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/* Bits within tgtype */
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#define TRIGGER_TYPE_ROW (1 << 0)
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#define TRIGGER_TYPE_BEFORE (1 << 1)
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#define TRIGGER_TYPE_INSERT (1 << 2)
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#define TRIGGER_TYPE_DELETE (1 << 3)
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#define TRIGGER_TYPE_UPDATE (1 << 4)
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#define TRIGGER_TYPE_TRUNCATE (1 << 5)
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/* Macros for manipulating tgtype */
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#define TRIGGER_CLEAR_TYPE(type) ((type) = 0)
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#define TRIGGER_SETT_ROW(type) ((type) |= TRIGGER_TYPE_ROW)
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#define TRIGGER_SETT_BEFORE(type) ((type) |= TRIGGER_TYPE_BEFORE)
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#define TRIGGER_SETT_INSERT(type) ((type) |= TRIGGER_TYPE_INSERT)
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#define TRIGGER_SETT_DELETE(type) ((type) |= TRIGGER_TYPE_DELETE)
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#define TRIGGER_SETT_UPDATE(type) ((type) |= TRIGGER_TYPE_UPDATE)
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#define TRIGGER_SETT_TRUNCATE(type) ((type) |= TRIGGER_TYPE_TRUNCATE)
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#define TRIGGER_FOR_ROW(type) ((type) & TRIGGER_TYPE_ROW)
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#define TRIGGER_FOR_BEFORE(type) ((type) & TRIGGER_TYPE_BEFORE)
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#define TRIGGER_FOR_INSERT(type) ((type) & TRIGGER_TYPE_INSERT)
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#define TRIGGER_FOR_DELETE(type) ((type) & TRIGGER_TYPE_DELETE)
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#define TRIGGER_FOR_UPDATE(type) ((type) & TRIGGER_TYPE_UPDATE)
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#define TRIGGER_FOR_TRUNCATE(type) ((type) & TRIGGER_TYPE_TRUNCATE)
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#endif /* PG_TRIGGER_H */
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