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Patch by: wieck@sapserv.debis.de (Jan Wieck)

   One  of  the design rules of PostgreSQL is extensibility. And
   to follow this rule means (at least for me) that there should
   not  only  be a builtin PL.  Instead I would prefer a defined
   interface for PL implemetations.
This commit is contained in:
PostgreSQL Daemon
1998-01-15 19:46:37 +00:00
parent 763ff8aef8
commit baef78d96b
37 changed files with 340 additions and 398 deletions
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47
src/backend/commands/trigger.c
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@ -43,7 +43,6 @@ static HeapTuple
GetTupleForTrigger(Relation relation, ItemPointer tid,
bool before);
extern void fmgr_info(Oid procedureId, func_ptr * function, int *nargs);
extern GlobalMemory CacheCxt;
void
@ -413,8 +412,7 @@ RelationBuildTriggers(Relation relation)
build->tgname = nameout(&(pg_trigger->tgname));
build->tgfoid = pg_trigger->tgfoid;
build->tgfunc = NULL;
build->tgplfunc = NULL;
build->tgfunc.fn_addr = NULL;
build->tgtype = pg_trigger->tgtype;
build->tgnargs = pg_trigger->tgnargs;
memcpy(build->tgattr, &(pg_trigger->tgattr), 8 * sizeof(int16));
@ -598,48 +596,17 @@ static HeapTuple
ExecCallTriggerFunc(Trigger * trigger)
{
if (trigger->tgfunc != NULL)
if (trigger->tgfunc.fn_addr == NULL)
{
return (HeapTuple) ((*(trigger->tgfunc)) ());
fmgr_info(trigger->tgfoid, &trigger->tgfunc);
}
if (trigger->tgplfunc == NULL)
{
HeapTuple procTuple;
HeapTuple langTuple;
Form_pg_proc procStruct;
Form_pg_language langStruct;
int nargs;
procTuple = SearchSysCacheTuple(PROOID,
ObjectIdGetDatum(trigger->tgfoid),
0, 0, 0);
if (!HeapTupleIsValid(procTuple))
{
elog(ERROR, "ExecCallTriggerFunc(): Cache lookup for proc %ld failed",
ObjectIdGetDatum(trigger->tgfoid));
}
procStruct = (Form_pg_proc) GETSTRUCT(procTuple);
langTuple = SearchSysCacheTuple(LANOID,
ObjectIdGetDatum(procStruct->prolang),
0, 0, 0);
if (!HeapTupleIsValid(langTuple))
{
elog(ERROR, "ExecCallTriggerFunc(): Cache lookup for language %ld failed",
ObjectIdGetDatum(procStruct->prolang));
}
langStruct = (Form_pg_language) GETSTRUCT(langTuple);
if (langStruct->lanispl == false)
{
fmgr_info(trigger->tgfoid, &(trigger->tgfunc), &nargs);
return (HeapTuple) ((*(trigger->tgfunc)) ());
}
fmgr_info(langStruct->lanplcallfoid, &(trigger->tgplfunc), &nargs);
if (trigger->tgfunc.fn_plhandler != NULL) {
return (HeapTuple) (*(trigger->tgfunc.fn_plhandler))
(&trigger->tgfunc);
}
return (HeapTuple) ((*(trigger->tgplfunc)) (trigger->tgfoid));
return (HeapTuple) ((*fmgr_faddr(&trigger->tgfunc)) ());
}
HeapTuple