Function afterTriggerCheckState

src/backend/commands/trigger.c:3708–3744

---------- * afterTriggerCheckState() * * Returns true if the trigger event is actually in state DEFERRED. * ---------- */

 * ----------
 */
static bool
afterTriggerCheckState(AfterTriggerShared evtshared)
{
	Oid			tgoid = evtshared->ats_tgoid;
	SetConstraintState state = afterTriggers.state;
	int			i;

	/*
	 * For not-deferrable triggers (i.e. normal AFTER ROW triggers and
	 * constraints declared NOT DEFERRABLE), the state is always false.
	 */
	if ((evtshared->ats_event & AFTER_TRIGGER_DEFERRABLE) == 0)
		return false;

	/*
	 * If constraint state exists, SET CONSTRAINTS might have been executed
	 * either for this trigger or for all triggers.
	 */
	if (state != NULL)
	{
		/* Check for SET CONSTRAINTS for this specific trigger. */
		for (i = 0; i < state->numstates; i++)
		{
			if (state->trigstates[i].sct_tgoid == tgoid)
				return state->trigstates[i].sct_tgisdeferred;
		}

		/* Check for SET CONSTRAINTS ALL. */
		if (state->all_isset)
			return state->all_isdeferred;
	}

	/*
	 * Otherwise return the default state for the trigger.
	 */
	return ((evtshared->ats_event & AFTER_TRIGGER_INITDEFERRED) != 0);
}


/* ----------