public function fetchAll($limit = null, $offset = null){
		$limit = $limit === null ? -1 : (int) $limit;
		if($offset !== null)
			$this->seek((int) $offset);

		$row = $this->fetch();
		if(!$row)
			return array();

		$rows = array();
		do{
			if($limit === 0)
				break;
			$rows[] = $row;
			$limit--;
		} while($row = $this->fetch());

		return $rows;
	}