mirror of
https://git.postgresql.org/git/postgresql.git
synced 2025-02-23 19:39:53 +08:00
Cleanups.
This commit is contained in:
Vadim B. Mikheev
parent
b6f348cd33
commit
a74613f478
@ -19,6 +19,7 @@
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#include "catalog/pg_trigger.h"
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#include "access/genam.h"
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#include "access/heapam.h"
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#include "access/valid.h"
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#include "access/xact.h"
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#include "storage/lmgr.h"
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#include "storage/bufmgr.h"
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@ -37,13 +38,16 @@ TriggerData *CurrentTriggerData = NULL;
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void RelationBuildTriggers(Relation relation);
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void FreeTriggerDesc(Relation relation);
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static void DescribeTrigger(TriggerDesc *trigdesc, Trigger *trigger);
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static void DescribeTrigger(TriggerDesc * trigdesc, Trigger * trigger);
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static HeapTuple
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GetTupleForTrigger(Relation relation, ItemPointer tid,
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bool before);
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extern void fmgr_info(Oid procedureId, func_ptr *function, int *nargs);
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extern void fmgr_info(Oid procedureId, func_ptr * function, int *nargs);
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extern GlobalMemory CacheCxt;
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void
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CreateTrigger(CreateTrigStmt *stmt)
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CreateTrigger(CreateTrigStmt * stmt)
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{
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int16 tgtype;
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int16 tgattr[8] = {0};
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@ -211,7 +215,7 @@ CreateTrigger(CreateTrigStmt *stmt)
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}
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void
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DropTrigger(DropTrigStmt *stmt)
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DropTrigger(DropTrigStmt * stmt)
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{
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Relation rel;
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Relation tgrel;
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@ -481,7 +485,7 @@ FreeTriggerDesc(Relation relation)
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}
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static void
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DescribeTrigger(TriggerDesc *trigdesc, Trigger *trigger)
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DescribeTrigger(TriggerDesc * trigdesc, Trigger * trigger)
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{
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uint16 *n;
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Trigger ***t,
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@ -555,21 +559,90 @@ DescribeTrigger(TriggerDesc *trigdesc, Trigger *trigger)
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}
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HeapTuple
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ExecBRInsertTriggers(Relation rel, HeapTuple tuple)
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ExecBRInsertTriggers(Relation rel, HeapTuple trigtuple)
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{
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TriggerData *SaveTriggerData;
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int ntrigs = rel->trigdesc->n_before_row[TRIGGER_EVENT_INSERT];
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Trigger **trigger = rel->trigdesc->tg_before_row[TRIGGER_EVENT_INSERT];
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HeapTuple newtuple = tuple;
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HeapTuple newtuple = trigtuple;
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HeapTuple oldtuple;
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int nargs;
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int i;
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CurrentTriggerData = (TriggerData *) palloc(sizeof(TriggerData));
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CurrentTriggerData->tg_event = TRIGGER_EVENT_INSERT | TRIGGER_EVENT_ROW;
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CurrentTriggerData->tg_relation = rel;
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CurrentTriggerData->tg_newtuple = NULL;
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SaveTriggerData = (TriggerData *) palloc(sizeof(TriggerData));
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SaveTriggerData->tg_event =
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TRIGGER_EVENT_INSERT | TRIGGER_EVENT_ROW | TRIGGER_EVENT_BEFORE;
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SaveTriggerData->tg_relation = rel;
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SaveTriggerData->tg_newtuple = NULL;
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for (i = 0; i < ntrigs; i++)
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{
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CurrentTriggerData->tg_trigtuple = newtuple;
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CurrentTriggerData = SaveTriggerData;
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CurrentTriggerData->tg_trigtuple = oldtuple = newtuple;
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CurrentTriggerData->tg_trigger = trigger[i];
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if (trigger[i]->tgfunc == NULL)
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fmgr_info(trigger[i]->tgfoid, &(trigger[i]->tgfunc), &nargs);
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newtuple = (HeapTuple) ((*(trigger[i]->tgfunc)) ());
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if (newtuple == NULL)
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break;
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else if (oldtuple != newtuple && oldtuple != trigtuple)
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pfree(oldtuple);
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}
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CurrentTriggerData = NULL;
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pfree(SaveTriggerData);
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return (newtuple);
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}
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void
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ExecARInsertTriggers(Relation rel, HeapTuple trigtuple)
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{
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TriggerData *SaveTriggerData;
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int ntrigs = rel->trigdesc->n_after_row[TRIGGER_EVENT_INSERT];
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Trigger **trigger = rel->trigdesc->tg_after_row[TRIGGER_EVENT_INSERT];
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int nargs;
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int i;
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SaveTriggerData = (TriggerData *) palloc(sizeof(TriggerData));
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SaveTriggerData->tg_event = TRIGGER_EVENT_INSERT | TRIGGER_EVENT_ROW;
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SaveTriggerData->tg_relation = rel;
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SaveTriggerData->tg_newtuple = NULL;
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for (i = 0; i < ntrigs; i++)
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{
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CurrentTriggerData = SaveTriggerData;
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CurrentTriggerData->tg_trigtuple = trigtuple;
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CurrentTriggerData->tg_trigger = trigger[i];
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if (trigger[i]->tgfunc == NULL)
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fmgr_info(trigger[i]->tgfoid, &(trigger[i]->tgfunc), &nargs);
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(void) ((*(trigger[i]->tgfunc)) ());
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}
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CurrentTriggerData = NULL;
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pfree(SaveTriggerData);
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return;
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}
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bool
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ExecBRDeleteTriggers(Relation rel, ItemPointer tupleid)
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{
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TriggerData *SaveTriggerData;
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int ntrigs = rel->trigdesc->n_before_row[TRIGGER_EVENT_DELETE];
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Trigger **trigger = rel->trigdesc->tg_before_row[TRIGGER_EVENT_DELETE];
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HeapTuple trigtuple;
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HeapTuple newtuple = NULL;
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int nargs;
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int i;
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trigtuple = GetTupleForTrigger(rel, tupleid, true);
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if (trigtuple == NULL)
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return (false);
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SaveTriggerData = (TriggerData *) palloc(sizeof(TriggerData));
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SaveTriggerData->tg_event =
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TRIGGER_EVENT_DELETE | TRIGGER_EVENT_ROW | TRIGGER_EVENT_BEFORE;
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SaveTriggerData->tg_relation = rel;
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SaveTriggerData->tg_newtuple = NULL;
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for (i = 0; i < ntrigs; i++)
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{
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CurrentTriggerData = SaveTriggerData;
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CurrentTriggerData->tg_trigtuple = trigtuple;
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CurrentTriggerData->tg_trigger = trigger[i];
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if (trigger[i]->tgfunc == NULL)
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fmgr_info(trigger[i]->tgfoid, &(trigger[i]->tgfunc), &nargs);
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@ -577,42 +650,158 @@ ExecBRInsertTriggers(Relation rel, HeapTuple tuple)
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if (newtuple == NULL)
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break;
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}
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pfree(CurrentTriggerData);
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CurrentTriggerData = NULL;
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return (newtuple);
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}
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pfree(SaveTriggerData);
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pfree(trigtuple);
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void
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ExecARInsertTriggers(Relation rel, HeapTuple tuple)
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{
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return;
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}
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bool
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ExecBRDeleteTriggers(Relation rel, ItemPointer tupleid)
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{
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return (true);
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return ((newtuple == NULL) ? false : true);
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}
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void
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ExecARDeleteTriggers(Relation rel, ItemPointer tupleid)
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{
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TriggerData *SaveTriggerData;
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int ntrigs = rel->trigdesc->n_after_row[TRIGGER_EVENT_DELETE];
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Trigger **trigger = rel->trigdesc->tg_after_row[TRIGGER_EVENT_DELETE];
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HeapTuple trigtuple;
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int nargs;
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int i;
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trigtuple = GetTupleForTrigger(rel, tupleid, false);
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Assert(trigtuple != NULL);
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SaveTriggerData = (TriggerData *) palloc(sizeof(TriggerData));
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SaveTriggerData->tg_event =
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TRIGGER_EVENT_DELETE | TRIGGER_EVENT_ROW;
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SaveTriggerData->tg_relation = rel;
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SaveTriggerData->tg_newtuple = NULL;
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for (i = 0; i < ntrigs; i++)
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{
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CurrentTriggerData = SaveTriggerData;
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CurrentTriggerData->tg_trigtuple = trigtuple;
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CurrentTriggerData->tg_trigger = trigger[i];
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if (trigger[i]->tgfunc == NULL)
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fmgr_info(trigger[i]->tgfoid, &(trigger[i]->tgfunc), &nargs);
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(void) ((*(trigger[i]->tgfunc)) ());
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}
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CurrentTriggerData = NULL;
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pfree(SaveTriggerData);
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pfree(trigtuple);
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return;
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}
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HeapTuple
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ExecBRUpdateTriggers(Relation rel, ItemPointer tupleid, HeapTuple tuple)
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ExecBRUpdateTriggers(Relation rel, ItemPointer tupleid, HeapTuple newtuple)
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{
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TriggerData *SaveTriggerData;
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int ntrigs = rel->trigdesc->n_before_row[TRIGGER_EVENT_UPDATE];
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Trigger **trigger = rel->trigdesc->tg_before_row[TRIGGER_EVENT_UPDATE];
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HeapTuple trigtuple;
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HeapTuple oldtuple;
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HeapTuple intuple = newtuple;
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int nargs;
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int i;
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return (tuple);
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trigtuple = GetTupleForTrigger(rel, tupleid, true);
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if (trigtuple == NULL)
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return (NULL);
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SaveTriggerData = (TriggerData *) palloc(sizeof(TriggerData));
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SaveTriggerData->tg_event =
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TRIGGER_EVENT_UPDATE | TRIGGER_EVENT_ROW | TRIGGER_EVENT_BEFORE;
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SaveTriggerData->tg_relation = rel;
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for (i = 0; i < ntrigs; i++)
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{
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CurrentTriggerData = SaveTriggerData;
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CurrentTriggerData->tg_trigtuple = trigtuple;
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CurrentTriggerData->tg_newtuple = oldtuple = newtuple;
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CurrentTriggerData->tg_trigger = trigger[i];
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if (trigger[i]->tgfunc == NULL)
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fmgr_info(trigger[i]->tgfoid, &(trigger[i]->tgfunc), &nargs);
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newtuple = (HeapTuple) ((*(trigger[i]->tgfunc)) ());
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if (newtuple == NULL)
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break;
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else if (oldtuple != newtuple && oldtuple != intuple)
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pfree(oldtuple);
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}
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CurrentTriggerData = NULL;
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pfree(SaveTriggerData);
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pfree(trigtuple);
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return (newtuple);
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}
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void
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ExecARUpdateTriggers(Relation rel, ItemPointer tupleid, HeapTuple tuple)
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ExecARUpdateTriggers(Relation rel, ItemPointer tupleid, HeapTuple newtuple)
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{
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TriggerData *SaveTriggerData;
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int ntrigs = rel->trigdesc->n_after_row[TRIGGER_EVENT_UPDATE];
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Trigger **trigger = rel->trigdesc->tg_after_row[TRIGGER_EVENT_UPDATE];
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HeapTuple trigtuple;
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int nargs;
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int i;
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trigtuple = GetTupleForTrigger(rel, tupleid, false);
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Assert(trigtuple != NULL);
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SaveTriggerData = (TriggerData *) palloc(sizeof(TriggerData));
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SaveTriggerData->tg_event =
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TRIGGER_EVENT_UPDATE | TRIGGER_EVENT_ROW;
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SaveTriggerData->tg_relation = rel;
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for (i = 0; i < ntrigs; i++)
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{
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CurrentTriggerData = SaveTriggerData;
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CurrentTriggerData->tg_trigtuple = trigtuple;
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CurrentTriggerData->tg_newtuple = newtuple;
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CurrentTriggerData->tg_trigger = trigger[i];
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if (trigger[i]->tgfunc == NULL)
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fmgr_info(trigger[i]->tgfoid, &(trigger[i]->tgfunc), &nargs);
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(void) ((*(trigger[i]->tgfunc)) ());
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}
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CurrentTriggerData = NULL;
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pfree(SaveTriggerData);
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pfree(trigtuple);
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return;
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}
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static HeapTuple
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GetTupleForTrigger(Relation relation, ItemPointer tid, bool before)
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{
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ItemId lp;
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HeapTuple tuple;
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PageHeader dp;
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Buffer b;
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b = ReadBuffer(relation, ItemPointerGetBlockNumber(tid));
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if (!BufferIsValid(b))
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elog(WARN, "GetTupleForTrigger: failed ReadBuffer");
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dp = (PageHeader) BufferGetPage(b);
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lp = PageGetItemId(dp, ItemPointerGetOffsetNumber(tid));
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Assert(ItemIdIsUsed(lp));
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tuple = (HeapTuple) PageGetItem((Page) dp, lp);
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if (before)
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{
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if (TupleUpdatedByCurXactAndCmd(tuple))
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{
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elog(NOTICE, "GetTupleForTrigger: Non-functional delete/update");
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ReleaseBuffer(b);
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return (NULL);
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}
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if (!(tuple = heap_tuple_satisfies(lp, relation, b, dp,
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NowTimeQual, 0, (ScanKey) NULL)))
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{
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ReleaseBuffer(b);
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elog(WARN, "GetTupleForTrigger: (am)invalid tid");
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}
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}
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tuple = heap_copytuple(tuple);
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ReleaseBuffer(b);
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return (tuple);
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}
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@ -39,18 +39,22 @@ typedef struct
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Oid *argtypes;
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} _SPI_plan;
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static int _SPI_execute(char *src, int tcount, _SPI_plan *plan);
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static int _SPI_pquery(QueryDesc *queryDesc, EState *state, int tcount);
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static int _SPI_execute(char *src, int tcount, _SPI_plan * plan);
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static int _SPI_pquery(QueryDesc * queryDesc, EState * state, int tcount);
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#if 0
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static void _SPI_fetch(FetchStmt *stmt);
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static void _SPI_fetch(FetchStmt * stmt);
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#endif
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static int
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_SPI_execute_plan(_SPI_plan *plan,
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_SPI_execute_plan(_SPI_plan * plan,
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char **Values, char *Nulls, int tcount);
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static _SPI_plan *_SPI_copy_plan(_SPI_plan *plan, bool local);
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#define _SPI_CPLAN_CURCXT 0
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#define _SPI_CPLAN_PROCXT 1
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#define _SPI_CPLAN_TOPCXT 2
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static _SPI_plan *_SPI_copy_plan(_SPI_plan * plan, int location);
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static int _SPI_begin_call(bool execmem);
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static int _SPI_end_call(bool procmem);
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@ -108,7 +112,7 @@ SPI_connect()
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if (_SPI_connected <= -1)
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elog(FATAL, "SPI_connect: some connection(s) expected");
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_SPI_stack = (_SPI_connection *) realloc(_SPI_stack,
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(_SPI_connected + 1) * sizeof(_SPI_connection));
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(_SPI_connected + 2) * sizeof(_SPI_connection));
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}
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/*
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@ -202,14 +206,16 @@ SPI_execp(void *plan, char **Values, char *Nulls, int tcount)
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if (plan == NULL || tcount < 0)
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return (SPI_ERROR_ARGUMENT);
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if (((_SPI_plan *) plan)->nargs > 0 &&
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(Values == NULL || Nulls == NULL))
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if (((_SPI_plan *) plan)->nargs > 0 && Values == NULL)
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return (SPI_ERROR_PARAM);
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res = _SPI_begin_call(true);
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if (res < 0)
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return (res);
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/* copy plan to current (executor) context */
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plan = (void *) _SPI_copy_plan(plan, _SPI_CPLAN_CURCXT);
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res = _SPI_execute_plan((_SPI_plan *) plan, Values, Nulls, tcount);
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_SPI_end_call(true);
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@ -217,7 +223,7 @@ SPI_execp(void *plan, char **Values, char *Nulls, int tcount)
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}
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void *
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SPI_prepare(char *src, int nargs, Oid *argtypes)
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SPI_prepare(char *src, int nargs, Oid * argtypes)
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{
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_SPI_plan *plan;
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@ -237,8 +243,8 @@ SPI_prepare(char *src, int nargs, Oid *argtypes)
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SPI_result = _SPI_execute(src, 0, plan);
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if (SPI_result >= 0) /* copy plan to local space */
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plan = _SPI_copy_plan(plan, true);
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if (SPI_result >= 0) /* copy plan to procedure context */
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plan = _SPI_copy_plan(plan, _SPI_CPLAN_PROCXT);
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else
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plan = NULL;
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@ -263,7 +269,7 @@ SPI_saveplan(void *plan)
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if (SPI_result < 0)
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return (NULL);
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newplan = _SPI_copy_plan((_SPI_plan *) plan, false);
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newplan = _SPI_copy_plan((_SPI_plan *) plan, _SPI_CPLAN_TOPCXT);
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_SPI_curid--;
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SPI_result = 0;
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@ -289,6 +295,27 @@ SPI_fnumber(TupleDesc tupdesc, char *fname)
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return (SPI_ERROR_NOATTRIBUTE);
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}
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char *
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SPI_fname(TupleDesc tupdesc, int fnumber)
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{
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SPI_result = 0;
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if (_SPI_curid + 1 != _SPI_connected)
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{
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SPI_result = SPI_ERROR_UNCONNECTED;
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return (NULL);
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}
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if (tupdesc->natts < fnumber || fnumber <= 0)
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{
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SPI_result = SPI_ERROR_NOATTRIBUTE;
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return (NULL);
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}
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return (nameout(&(tupdesc->attrs[fnumber - 1]->attname)));
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}
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char *
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SPI_getvalue(HeapTuple tuple, TupleDesc tupdesc, int fnumber)
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{
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@ -320,7 +347,7 @@ SPI_getvalue(HeapTuple tuple, TupleDesc tupdesc, int fnumber)
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}
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char *
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SPI_getbinval(HeapTuple tuple, TupleDesc tupdesc, int fnumber, bool *isnull)
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SPI_getbinval(HeapTuple tuple, TupleDesc tupdesc, int fnumber, bool * isnull)
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{
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char *val;
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@ -457,7 +484,7 @@ spi_printtup(HeapTuple tuple, TupleDesc tupdesc)
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*/
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static int
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_SPI_execute(char *src, int tcount, _SPI_plan *plan)
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_SPI_execute(char *src, int tcount, _SPI_plan * plan)
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{
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QueryTreeList *queryTree_list;
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List *planTree_list;
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@ -554,7 +581,7 @@ _SPI_execute(char *src, int tcount, _SPI_plan *plan)
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}
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static int
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_SPI_execute_plan(_SPI_plan *plan, char **Values, char *Nulls, int tcount)
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_SPI_execute_plan(_SPI_plan * plan, char **Values, char *Nulls, int tcount)
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{
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QueryTreeList *queryTree_list = plan->qtlist;
|
||||
List *planTree_list = plan->ptlist;
|
||||
@ -606,7 +633,7 @@ _SPI_execute_plan(_SPI_plan *plan, char **Values, char *Nulls, int tcount)
|
||||
{
|
||||
paramLI->kind = PARAM_NUM;
|
||||
paramLI->id = k + 1;
|
||||
paramLI->isnull = (Nulls[k] != 0);
|
||||
paramLI->isnull = (Nulls != NULL && Nulls[k] != 'n');
|
||||
paramLI->value = (Datum) Values[k];
|
||||
}
|
||||
paramLI->kind = PARAM_INVALID;
|
||||
@ -625,7 +652,7 @@ _SPI_execute_plan(_SPI_plan *plan, char **Values, char *Nulls, int tcount)
|
||||
}
|
||||
|
||||
static int
|
||||
_SPI_pquery(QueryDesc *queryDesc, EState *state, int tcount)
|
||||
_SPI_pquery(QueryDesc * queryDesc, EState * state, int tcount)
|
||||
{
|
||||
Query *parseTree;
|
||||
Plan *plan;
|
||||
@ -692,7 +719,7 @@ _SPI_pquery(QueryDesc *queryDesc, EState *state, int tcount)
|
||||
return (SPI_OK_CURSOR);
|
||||
}
|
||||
|
||||
ExecutorRun(queryDesc, state, EXEC_RUN, tcount);
|
||||
ExecutorRun(queryDesc, state, EXEC_FOR, tcount);
|
||||
|
||||
_SPI_current->processed = state->es_processed;
|
||||
if (operation == CMD_SELECT && queryDesc->dest == SPI)
|
||||
@ -723,7 +750,7 @@ _SPI_pquery(QueryDesc *queryDesc, EState *state, int tcount)
|
||||
|
||||
#if 0
|
||||
static void
|
||||
_SPI_fetch(FetchStmt *stmt)
|
||||
_SPI_fetch(FetchStmt * stmt)
|
||||
{
|
||||
char *name = stmt->portalname;
|
||||
int feature = (stmt->direction == FORWARD) ? EXEC_FOR : EXEC_BACK;
|
||||
@ -864,16 +891,16 @@ _SPI_checktuples(bool isRetrieveIntoRelation)
|
||||
}
|
||||
|
||||
static _SPI_plan *
|
||||
_SPI_copy_plan(_SPI_plan *plan, bool local)
|
||||
_SPI_copy_plan(_SPI_plan * plan, int location)
|
||||
{
|
||||
_SPI_plan *newplan;
|
||||
MemoryContext oldcxt;
|
||||
MemoryContext oldcxt = NULL;
|
||||
int i;
|
||||
|
||||
if (local)
|
||||
if (location == _SPI_CPLAN_PROCXT)
|
||||
oldcxt = MemoryContextSwitchTo((MemoryContext)
|
||||
PortalGetVariableMemory(_SPI_current->portal));
|
||||
else
|
||||
else if (location == _SPI_CPLAN_TOPCXT)
|
||||
oldcxt = MemoryContextSwitchTo(TopMemoryContext);
|
||||
|
||||
newplan = (_SPI_plan *) palloc(sizeof(_SPI_plan));
|
||||
@ -895,6 +922,7 @@ _SPI_copy_plan(_SPI_plan *plan, bool local)
|
||||
else
|
||||
newplan->argtypes = NULL;
|
||||
|
||||
if (location != _SPI_CPLAN_CURCXT)
|
||||
MemoryContextSwitchTo(oldcxt);
|
||||
|
||||
return (newplan);
|
||||
|
||||
@ -58,8 +58,8 @@ extern TriggerData *CurrentTriggerData;
|
||||
(!TRIGGER_FIRED_BEFORE (event))
|
||||
|
||||
|
||||
extern void CreateTrigger(CreateTrigStmt *stmt);
|
||||
extern void DropTrigger(DropTrigStmt *stmt);
|
||||
extern void CreateTrigger(CreateTrigStmt * stmt);
|
||||
extern void DropTrigger(DropTrigStmt * stmt);
|
||||
extern void RelationRemoveTriggers(Relation rel);
|
||||
|
||||
extern HeapTuple ExecBRInsertTriggers(Relation rel, HeapTuple tuple);
|
||||
|
||||
@ -28,6 +28,7 @@
|
||||
#include "utils/syscache.h"
|
||||
#include "utils/mcxt.h"
|
||||
#include "utils/portal.h"
|
||||
#include "utils/builtins.h"
|
||||
#include "catalog/pg_language.h"
|
||||
#include "access/heapam.h"
|
||||
#include "access/xact.h"
|
||||
@ -73,12 +74,13 @@ extern int SPI_connect(void);
|
||||
extern int SPI_finish(void);
|
||||
extern int SPI_exec(char *src, int tcount);
|
||||
extern int SPI_execp(void *plan, char **values, char *Nulls, int tcount);
|
||||
extern void *SPI_prepare(char *src, int nargs, Oid *argtypes);
|
||||
extern void *SPI_prepare(char *src, int nargs, Oid * argtypes);
|
||||
extern void *SPI_saveplan(void *plan);
|
||||
|
||||
extern int SPI_fnumber(TupleDesc tupdesc, char *fname);
|
||||
extern char *SPI_fname(TupleDesc tupdesc, int fnumber);
|
||||
extern char *SPI_getvalue(HeapTuple tuple, TupleDesc tupdesc, int fnumber);
|
||||
extern char *SPI_getbinval(HeapTuple tuple, TupleDesc tupdesc, int fnumber, bool *isnull);
|
||||
extern char *SPI_getbinval(HeapTuple tuple, TupleDesc tupdesc, int fnumber, bool * isnull);
|
||||
extern char *SPI_gettype(TupleDesc tupdesc, int fnumber);
|
||||
extern Oid SPI_gettypeid(TupleDesc tupdesc, int fnumber);
|
||||
extern char *SPI_getrelname(Relation rel);
|
||||
|
||||
Loading…
Reference in New Issue
Block a user