public function getAliasedTableFromDQL($field)
 {
     $results = array();
     if (preg_match_all('/([A-Za-z_\\.0-9]+?) AS ' . preg_quote($field, "/") . '/i', $this->currentQuery->getDql(), $results)) {
         return $results[1][0];
     } else {
         return $field;
     }
 }