SchedulerEventTable::isSubscribed

static function isSubscribed($workflowId, $handler, $eventModule, $eventType, $entityId = null)
{
	$filter = array(
		'=WORKFLOW_ID' => (string)$workflowId,
		'=HANDLER' => (string)$handler,
		'=EVENT_MODULE' => (string)$eventModule,
		'=EVENT_TYPE' => (string)$eventType
	);

	if ($entityId !== null)
		$filter['=ENTITY_ID'] = (string)$entityId;

	$row = static::getList(array(
		'select' => array('ID'),
		'filter' => $filter
	))->fetch();

	return (is_array($row));
}