database/postgres
1
0
Fork 0
mirror of https://github.com/postgres/postgres.git synced 2025-07-18 17:42:25 +03:00
Code Activity

Fire non-deferred AFTER triggers immediately upon query completion,

Browse Source 
rather than when returning to the idle loop.  This makes no particular
difference for interactively-issued queries, but it makes a big difference
for queries issued within functions: trigger execution now occurs before
the calling function is allowed to proceed.  This responds to numerous
complaints about nonintuitive behavior of foreign key checking, such as
http://archives.postgresql.org/pgsql-bugs/2004-09/msg00020.php, and
appears to be required by the SQL99 spec.
Also take the opportunity to simplify the data structures used for the
pending-trigger list, rename them for more clarity, and squeeze out a
bit of space.
This commit is contained in:
Tom Lane
2004-09-10 18:40:09 +00:00
parent 856d1faac1
commit b339d1fff6
17 changed files with 967 additions and 631 deletions
Download Patch File Download Diff File Expand all files Collapse all files

28
src/include/commands/trigger.h
View File

@ -6,7 +6,7 @@
* Portions Copyright (c) 1996-2004, PostgreSQL Global Development Group
* Portions Copyright (c) 1994, Regents of the University of California
*
* $PostgreSQL: pgsql/src/include/commands/trigger.h,v 1.48 2004/08/29 05:06:56 momjian Exp $
* $PostgreSQL: pgsql/src/include/commands/trigger.h,v 1.49 2004/09/10 18:40:06 tgl Exp $
*
*-------------------------------------------------------------------------
*/
@ -45,11 +45,12 @@ typedef struct TriggerData
#define TRIGGER_EVENT_ROW 0x00000004
#define TRIGGER_EVENT_BEFORE 0x00000008
#define TRIGGER_DEFERRED_DONE 0x00000010
#define TRIGGER_DEFERRED_CANCELED 0x00000020
#define TRIGGER_DEFERRED_DEFERRABLE 0x00000040
#define TRIGGER_DEFERRED_INITDEFERRED 0x00000080
#define TRIGGER_DEFERRED_HAS_BEFORE 0x00000100
/* More TriggerEvent flags, used only within trigger.c */
#define AFTER_TRIGGER_DONE 0x00000010
#define AFTER_TRIGGER_IN_PROGRESS 0x00000020
#define AFTER_TRIGGER_DEFERRABLE 0x00000040
#define AFTER_TRIGGER_INITDEFERRED 0x00000080
#define TRIGGER_FIRED_BY_INSERT(event) \
(((TriggerEvent) (event) & TRIGGER_EVENT_OPMASK) == \
@ -151,14 +152,15 @@ extern void ExecARUpdateTriggers(EState *estate,
ItemPointer tupleid,
HeapTuple newtuple);
extern void DeferredTriggerBeginXact(void);
extern void DeferredTriggerEndQuery(void);
extern void DeferredTriggerEndXact(void);
extern void DeferredTriggerAbortXact(void);
extern void DeferredTriggerBeginSubXact(void);
extern void DeferredTriggerEndSubXact(bool isCommit);
extern void AfterTriggerBeginXact(void);
extern void AfterTriggerBeginQuery(void);
extern void AfterTriggerEndQuery(void);
extern void AfterTriggerEndXact(void);
extern void AfterTriggerAbortXact(void);
extern void AfterTriggerBeginSubXact(void);
extern void AfterTriggerEndSubXact(bool isCommit);
extern void DeferredTriggerSetState(ConstraintsSetStmt *stmt);
extern void AfterTriggerSetState(ConstraintsSetStmt *stmt);
/*