mirror of
https://github.com/simtactics/niotso.git
synced 2025-04-01 23:44:02 +00:00
139 lines
5.5 KiB
C
139 lines
5.5 KiB
C
/*-------------------------------------------------------------------------
|
|
*
|
|
* pg_trigger.h
|
|
* definition of the system "trigger" relation (pg_trigger)
|
|
* along with the relation's initial contents.
|
|
*
|
|
*
|
|
* Portions Copyright (c) 1996-2011, PostgreSQL Global Development Group
|
|
* Portions Copyright (c) 1994, Regents of the University of California
|
|
*
|
|
* src/include/catalog/pg_trigger.h
|
|
*
|
|
* NOTES
|
|
* the genbki.pl script reads this file and generates .bki
|
|
* information from the DATA() statements.
|
|
*
|
|
*-------------------------------------------------------------------------
|
|
*/
|
|
#ifndef PG_TRIGGER_H
|
|
#define PG_TRIGGER_H
|
|
|
|
#include "catalog/genbki.h"
|
|
|
|
/* ----------------
|
|
* pg_trigger definition. cpp turns this into
|
|
* typedef struct FormData_pg_trigger
|
|
*
|
|
* Note: when tgconstraint is nonzero, tgconstrrelid, tgconstrindid,
|
|
* tgdeferrable, and tginitdeferred are largely redundant with the referenced
|
|
* pg_constraint entry. However, it is possible for a non-deferrable trigger
|
|
* to be associated with a deferrable constraint.
|
|
* ----------------
|
|
*/
|
|
#define TriggerRelationId 2620
|
|
|
|
CATALOG(pg_trigger,2620)
|
|
{
|
|
Oid tgrelid; /* relation trigger is attached to */
|
|
NameData tgname; /* trigger's name */
|
|
Oid tgfoid; /* OID of function to be called */
|
|
int2 tgtype; /* BEFORE/AFTER/INSTEAD, UPDATE/DELETE/INSERT,
|
|
* ROW/STATEMENT; see below */
|
|
char tgenabled; /* trigger's firing configuration WRT
|
|
* session_replication_role */
|
|
bool tgisinternal; /* trigger is system-generated */
|
|
Oid tgconstrrelid; /* constraint's FROM table, if any */
|
|
Oid tgconstrindid; /* constraint's supporting index, if any */
|
|
Oid tgconstraint; /* associated pg_constraint entry, if any */
|
|
bool tgdeferrable; /* constraint trigger is deferrable */
|
|
bool tginitdeferred; /* constraint trigger is deferred initially */
|
|
int2 tgnargs; /* # of extra arguments in tgargs */
|
|
|
|
/* VARIABLE LENGTH FIELDS (note: tgattr and tgargs must not be null) */
|
|
int2vector tgattr; /* column numbers, if trigger is on columns */
|
|
bytea tgargs; /* first\000second\000tgnargs\000 */
|
|
pg_node_tree tgqual; /* WHEN expression, or NULL if none */
|
|
} FormData_pg_trigger;
|
|
|
|
/* ----------------
|
|
* Form_pg_trigger corresponds to a pointer to a tuple with
|
|
* the format of pg_trigger relation.
|
|
* ----------------
|
|
*/
|
|
typedef FormData_pg_trigger *Form_pg_trigger;
|
|
|
|
/* ----------------
|
|
* compiler constants for pg_trigger
|
|
* ----------------
|
|
*/
|
|
#define Natts_pg_trigger 15
|
|
#define Anum_pg_trigger_tgrelid 1
|
|
#define Anum_pg_trigger_tgname 2
|
|
#define Anum_pg_trigger_tgfoid 3
|
|
#define Anum_pg_trigger_tgtype 4
|
|
#define Anum_pg_trigger_tgenabled 5
|
|
#define Anum_pg_trigger_tgisinternal 6
|
|
#define Anum_pg_trigger_tgconstrrelid 7
|
|
#define Anum_pg_trigger_tgconstrindid 8
|
|
#define Anum_pg_trigger_tgconstraint 9
|
|
#define Anum_pg_trigger_tgdeferrable 10
|
|
#define Anum_pg_trigger_tginitdeferred 11
|
|
#define Anum_pg_trigger_tgnargs 12
|
|
#define Anum_pg_trigger_tgattr 13
|
|
#define Anum_pg_trigger_tgargs 14
|
|
#define Anum_pg_trigger_tgqual 15
|
|
|
|
/* Bits within tgtype */
|
|
#define TRIGGER_TYPE_ROW (1 << 0)
|
|
#define TRIGGER_TYPE_BEFORE (1 << 1)
|
|
#define TRIGGER_TYPE_INSERT (1 << 2)
|
|
#define TRIGGER_TYPE_DELETE (1 << 3)
|
|
#define TRIGGER_TYPE_UPDATE (1 << 4)
|
|
#define TRIGGER_TYPE_TRUNCATE (1 << 5)
|
|
#define TRIGGER_TYPE_INSTEAD (1 << 6)
|
|
|
|
#define TRIGGER_TYPE_LEVEL_MASK (TRIGGER_TYPE_ROW)
|
|
#define TRIGGER_TYPE_STATEMENT 0
|
|
|
|
/* Note bits within TRIGGER_TYPE_TIMING_MASK aren't adjacent */
|
|
#define TRIGGER_TYPE_TIMING_MASK \
|
|
(TRIGGER_TYPE_BEFORE | TRIGGER_TYPE_INSTEAD)
|
|
#define TRIGGER_TYPE_AFTER 0
|
|
|
|
#define TRIGGER_TYPE_EVENT_MASK \
|
|
(TRIGGER_TYPE_INSERT | TRIGGER_TYPE_DELETE | TRIGGER_TYPE_UPDATE | TRIGGER_TYPE_TRUNCATE)
|
|
|
|
/* Macros for manipulating tgtype */
|
|
#define TRIGGER_CLEAR_TYPE(type) ((type) = 0)
|
|
|
|
#define TRIGGER_SETT_ROW(type) ((type) |= TRIGGER_TYPE_ROW)
|
|
#define TRIGGER_SETT_STATEMENT(type) ((type) |= TRIGGER_TYPE_STATEMENT)
|
|
#define TRIGGER_SETT_BEFORE(type) ((type) |= TRIGGER_TYPE_BEFORE)
|
|
#define TRIGGER_SETT_AFTER(type) ((type) |= TRIGGER_TYPE_AFTER)
|
|
#define TRIGGER_SETT_INSTEAD(type) ((type) |= TRIGGER_TYPE_INSTEAD)
|
|
#define TRIGGER_SETT_INSERT(type) ((type) |= TRIGGER_TYPE_INSERT)
|
|
#define TRIGGER_SETT_DELETE(type) ((type) |= TRIGGER_TYPE_DELETE)
|
|
#define TRIGGER_SETT_UPDATE(type) ((type) |= TRIGGER_TYPE_UPDATE)
|
|
#define TRIGGER_SETT_TRUNCATE(type) ((type) |= TRIGGER_TYPE_TRUNCATE)
|
|
|
|
#define TRIGGER_FOR_ROW(type) ((type) & TRIGGER_TYPE_ROW)
|
|
#define TRIGGER_FOR_BEFORE(type) (((type) & TRIGGER_TYPE_TIMING_MASK) == TRIGGER_TYPE_BEFORE)
|
|
#define TRIGGER_FOR_AFTER(type) (((type) & TRIGGER_TYPE_TIMING_MASK) == TRIGGER_TYPE_AFTER)
|
|
#define TRIGGER_FOR_INSTEAD(type) (((type) & TRIGGER_TYPE_TIMING_MASK) == TRIGGER_TYPE_INSTEAD)
|
|
#define TRIGGER_FOR_INSERT(type) ((type) & TRIGGER_TYPE_INSERT)
|
|
#define TRIGGER_FOR_DELETE(type) ((type) & TRIGGER_TYPE_DELETE)
|
|
#define TRIGGER_FOR_UPDATE(type) ((type) & TRIGGER_TYPE_UPDATE)
|
|
#define TRIGGER_FOR_TRUNCATE(type) ((type) & TRIGGER_TYPE_TRUNCATE)
|
|
|
|
/*
|
|
* Efficient macro for checking if tgtype matches a particular level
|
|
* (TRIGGER_TYPE_ROW or TRIGGER_TYPE_STATEMENT), timing (TRIGGER_TYPE_BEFORE,
|
|
* TRIGGER_TYPE_AFTER or TRIGGER_TYPE_INSTEAD), and event (TRIGGER_TYPE_INSERT,
|
|
* TRIGGER_TYPE_DELETE, TRIGGER_TYPE_UPDATE, or TRIGGER_TYPE_TRUNCATE). Note
|
|
* that a tgtype can match more than one event, but only one level or timing.
|
|
*/
|
|
#define TRIGGER_TYPE_MATCHES(type, level, timing, event) \
|
|
(((type) & (TRIGGER_TYPE_LEVEL_MASK | TRIGGER_TYPE_TIMING_MASK | (event))) == ((level) | (timing) | (event)))
|
|
|
|
#endif /* PG_TRIGGER_H */
|