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Second round of fmgr changes: triggers are now invoked in new style,

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CurrentTriggerData is history.
This commit is contained in:
Tom Lane
2000-05-29 01:59:17 +00:00
parent 147ccf5c80
commit 18952f6744
41 changed files with 666 additions and 674 deletions
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32
contrib/lo/lo.c
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@ -1,7 +1,7 @@
/*
* PostgreSQL type definitions for managed LargeObjects.
*
* $Id: lo.c,v 1.2 1999/05/25 16:05:45 momjian Exp $
* $Id: lo.c,v 1.3 2000/05/29 01:59:02 tgl Exp $
*
*/
@ -37,7 +37,7 @@ Blob *lo_in(char *str); /* Create from String */
char *lo_out(Blob * addr);/* Output oid as String */
Oid lo_oid(Blob * addr);/* Return oid as an oid */
Blob *lo(Oid oid); /* Return Blob based on oid */
HeapTuple lo_manage(void); /* Trigger handler */
Datum lo_manage(PG_FUNCTION_ARGS); /* Trigger handler */
/*
* This creates a large object, and set's its OID to the value in the
@ -139,9 +139,10 @@ lo(Oid oid)
/*
* This handles the trigger that protects us from orphaned large objects
*/
HeapTuple
lo_manage(void)
Datum
lo_manage(PG_FUNCTION_ARGS)
{
TriggerData *trigdata = (TriggerData *) fcinfo->context;
int attnum; /* attribute number to monitor */
char **args; /* Args containing attr name */
TupleDesc tupdesc; /* Tuple Descriptor */
@ -150,28 +151,25 @@ lo_manage(void)
HeapTuple newtuple = NULL;/* The new value for tuple */
HeapTuple trigtuple; /* The original value of tuple */
if (!CurrentTriggerData)
elog(ERROR, "lo: triggers are not initialized");
if (!CALLED_AS_TRIGGER(fcinfo))
elog(ERROR, "lo: not fired by trigger manager");
/*
* Fetch some values from CurrentTriggerData
* Fetch some values from trigdata
*/
newtuple = CurrentTriggerData->tg_newtuple;
trigtuple = CurrentTriggerData->tg_trigtuple;
tupdesc = CurrentTriggerData->tg_relation->rd_att;
args = CurrentTriggerData->tg_trigger->tgargs;
newtuple = trigdata->tg_newtuple;
trigtuple = trigdata->tg_trigtuple;
tupdesc = trigdata->tg_relation->rd_att;
args = trigdata->tg_trigger->tgargs;
/* tuple to return to Executor */
if (TRIGGER_FIRED_BY_UPDATE(CurrentTriggerData->tg_event))
if (TRIGGER_FIRED_BY_UPDATE(trigdata->tg_event))
rettuple = newtuple;
else
rettuple = trigtuple;
/* Are we deleting the row? */
isdelete = TRIGGER_FIRED_BY_DELETE(CurrentTriggerData->tg_event);
/* Were done with it */
CurrentTriggerData = NULL;
isdelete = TRIGGER_FIRED_BY_DELETE(trigdata->tg_event);
/* Get the column were interested in */
attnum = SPI_fnumber(tupdesc, args[0]);
@ -214,5 +212,5 @@ lo_manage(void)
}
}
return (rettuple);
return PointerGetDatum(rettuple);
}