public function onResult(\pq\Result $result = null) {
		if ($result && $result->status != \pq\Result::TUPLES_OK) {
			return $result;
		}
		
		$rowset = $this->getRowsetPrototype();
		if (is_callable($rowset)) {
			return $rowset($result);
		} elseif ($rowset) {
			return new $rowset($this, $result);
		}
		
		return $result;
	}