/**
* @param string $preparedUrl
* @return null|string
*/
private static function buildWhere($preparedUrl)
{
$criteria = new Criteria();
$andList = explode('|', $preparedUrl);
$andList = array_filter($andList);
foreach ($andList as $condition) {
$criteria->andWhere(self::buildOR($condition));
}
return $criteria->getWhere();
}