private function parseQuery($query)
	{
		$string = '';
		if (is_array($query))
		{
			foreach ($query as $index => $value)
			{
				$string .= !empty($string) ? ' AND ' : '';
				$string .= $index . ':' . $value;
			}
		}
		else
		{
			$string = 'id:' . $query;
		}
		return $string;
	}