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This is part #1 for of the DEFERRED CONSTRAINT TRIGGER support.

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Implements the CREATE CONSTRAINT TRIGGER and SET CONSTRAINTS commands.

TODO:
    Generic builtin trigger procedures
    Automatic execution of appropriate CREATE CONSTRAINT... at CREATE TABLE
    Support of new trigger type in pg_dump
    Swapping of huge # of events to disk

Jan
This commit is contained in:
Jan Wieck
1999-09-29 16:06:40 +00:00
parent d810338d29
commit 1547ee017c
20 changed files with 1473 additions and 245 deletions
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49
src/include/commands/trigger.h
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@ -32,6 +32,13 @@ extern DLLIMPORT TriggerData *CurrentTriggerData;
#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
#define TRIGGER_DEFERRED_MASK 0x000001F0
#define TRIGGER_FIRED_BY_INSERT(event) \
(((TriggerEvent) (event) & TRIGGER_EVENT_OPMASK) == \
TRIGGER_EVENT_INSERT)
@ -68,4 +75,46 @@ extern void ExecARDeleteTriggers(EState *estate, ItemPointer tupleid);
extern HeapTuple ExecBRUpdateTriggers(EState *estate, ItemPointer tupleid, HeapTuple tuple);
extern void ExecARUpdateTriggers(EState *estate, ItemPointer tupleid, HeapTuple tuple);
/* ----------
* Deferred trigger stuff
* ----------
*/
typedef struct DeferredTriggerStatusData {
Oid dts_tgoid;
bool dts_tgisdeferred;
} DeferredTriggerStatusData;
typedef struct DeferredTriggerStatusData *DeferredTriggerStatus;
typedef struct DeferredTriggerEventItem {
Oid dti_tgoid;
int32 dti_state;
} DeferredTriggerEventItem;
typedef struct DeferredTriggerEventData {
int32 dte_event;
Oid dte_relid;
ItemPointerData dte_oldctid;
ItemPointerData dte_newctid;
int32 dte_n_items;
DeferredTriggerEventItem dte_item[1];
} DeferredTriggerEventData;
typedef struct DeferredTriggerEventData *DeferredTriggerEvent;
extern int DeferredTriggerInit(void);
extern void DeferredTriggerBeginXact(void);
extern void DeferredTriggerEndQuery(void);
extern void DeferredTriggerEndXact(void);
extern void DeferredTriggerAbortXact(void);
extern void DeferredTriggerSetState(ConstraintsSetStmt *stmt);
extern void DeferredTriggerSaveEvent(Relation rel, int event,
HeapTuple oldtup, HeapTuple newtup);
#endif /* TRIGGER_H */