Function view_has_instead_trigger

src/backend/rewrite/rewriteHandler.c:2540–2564

* view_has_instead_trigger - does view have an INSTEAD OF trigger for event? * * If it does, we don't want to treat it as auto-updatable. This test can't * be folded into view_query_is_auto_updatable because it's not an error * condition. */

 * condition.
 */
static bool
view_has_instead_trigger(Relation view, CmdType event)
{
	TriggerDesc *trigDesc = view->trigdesc;

	switch (event)
	{
		case CMD_INSERT:
			if (trigDesc && trigDesc->trig_insert_instead_row)
				return true;
			break;
		case CMD_UPDATE:
			if (trigDesc && trigDesc->trig_update_instead_row)
				return true;
			break;
		case CMD_DELETE:
			if (trigDesc && trigDesc->trig_delete_instead_row)
				return true;
			break;
		default:
			elog(ERROR, "unrecognized CmdType: %d", (int) event);
			break;
	}
	return false;
}


/*