1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
|
/*-------------------------------------------------------------------------
*
* pg_trigger.h
* definition of the system "trigger" relation (pg_trigger)
* along with the relation's initial contents.
*
*
* Portions Copyright (c) 1996-2010, PostgreSQL Global Development Group
* Portions Copyright (c) 1994, Regents of the University of California
*
* $PostgreSQL: pgsql/src/include/catalog/pg_trigger.h,v 1.40 2010/09/03 01:34:55 tgl Exp $
*
* 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 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)
/* Macros for manipulating tgtype */
#define TRIGGER_CLEAR_TYPE(type) ((type) = 0)
#define TRIGGER_SETT_ROW(type) ((type) |= TRIGGER_TYPE_ROW)
#define TRIGGER_SETT_BEFORE(type) ((type) |= TRIGGER_TYPE_BEFORE)
#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_BEFORE)
#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)
#endif /* PG_TRIGGER_H */
|
