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Hope that execMain.c good merged.

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Fix for BEFORE ROW UPDATE triggers: result tuple may be different
(due to concurrent update) from one initially produced by top level plan.
This commit is contained in:
Vadim B. Mikheev
1999-01-29 11:56:01 +00:00
parent 1d41e88568
commit aaef7beb79
3 changed files with 51 additions and 43 deletions
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39
src/backend/executor/execMain.c
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@ -26,7 +26,7 @@
*
*
* IDENTIFICATION
* $Header: /cvsroot/pgsql/src/backend/executor/execMain.c,v 1.67 1999/01/29 10:15:09 vadim Exp $
* $Header: /cvsroot/pgsql/src/backend/executor/execMain.c,v 1.68 1999/01/29 11:56:00 vadim Exp $
*
*-------------------------------------------------------------------------
*/
@ -66,7 +66,7 @@ static void EndPlan(Plan *plan, EState *estate);
static TupleTableSlot *ExecutePlan(EState *estate, Plan *plan,
CmdType operation, int numberTuples, ScanDirection direction,
DestReceiver *destfunc);
static void ExecRetrieve(TupleTableSlot *slot,
static void ExecRetrieve(TupleTableSlot *slot,
DestReceiver *destfunc,
EState *estate);
static void ExecAppend(TupleTableSlot *slot, ItemPointer tupleid,
@ -170,11 +170,11 @@ ExecutorStart(QueryDesc *queryDesc, EState *estate)
TupleTableSlot *
ExecutorRun(QueryDesc *queryDesc, EState *estate, int feature, int count)
{
CmdType operation;
Plan *plan;
CmdType operation;
Plan *plan;
TupleTableSlot *result;
CommandDest dest;
void (*destination) ();
CommandDest dest;
DestReceiver *destfunc;
/******************
* sanity checks
@ -190,10 +190,19 @@ ExecutorRun(QueryDesc *queryDesc, EState *estate, int feature, int count)
operation = queryDesc->operation;
plan = queryDesc->plantree;
dest = queryDesc->dest;
destination = (void (*) ()) DestToFunction(dest);
destfunc = DestToFunction(dest);
estate->es_processed = 0;
estate->es_lastoid = InvalidOid;
/******************
* FIXME: the dest setup function ought to be handed the tuple desc
* for the tuples to be output, but I'm not quite sure how to get that
* info at this point. For now, passing NULL is OK because no existing
* dest setup function actually uses the pointer.
******************
*/
(*destfunc->setup) (destfunc, (TupleDesc) NULL);
switch (feature)
{
@ -203,7 +212,7 @@ ExecutorRun(QueryDesc *queryDesc, EState *estate, int feature, int count)
operation,
ALL_TUPLES,
ForwardScanDirection,
destination);
destfunc);
break;
case EXEC_FOR:
result = ExecutePlan(estate,
@ -211,7 +220,7 @@ ExecutorRun(QueryDesc *queryDesc, EState *estate, int feature, int count)
operation,
count,
ForwardScanDirection,
destination);
destfunc);
break;
/******************
@ -224,7 +233,7 @@ ExecutorRun(QueryDesc *queryDesc, EState *estate, int feature, int count)
operation,
count,
BackwardScanDirection,
destination);
destfunc);
break;
/******************
@ -238,7 +247,7 @@ ExecutorRun(QueryDesc *queryDesc, EState *estate, int feature, int count)
operation,
ONE_TUPLE,
ForwardScanDirection,
destination);
destfunc);
break;
default:
result = NULL;
@ -246,6 +255,8 @@ ExecutorRun(QueryDesc *queryDesc, EState *estate, int feature, int count)
break;
}
(*destfunc->cleanup) (destfunc);
return result;
}
@ -756,7 +767,7 @@ ExecutePlan(EState *estate,
CmdType operation,
int numberTuples,
ScanDirection direction,
DestReceiver *destfunc)
DestReceiver* destfunc)
{
JunkFilter *junkfilter;
@ -941,7 +952,7 @@ lmark:;
{
case CMD_SELECT:
ExecRetrieve(slot, /* slot containing tuple */
destfunc, /* print function */
destfunc, /* destination's tuple-receiver obj */
estate); /* */
result = slot;
break;
@ -1024,7 +1035,7 @@ ExecRetrieve(TupleTableSlot *slot,
* send the tuple to the front end (or the screen)
******************
*/
(*printfunc) (tuple, attrtype);
(*destfunc->receiveTuple) (tuple, attrtype, destfunc);
IncrRetrieved();
(estate->es_processed)++;
}