public static function getPromocionesFirmaFamilia($idFirma, $idFamilia, $soloVigentes = true)
 {
     $rows = array();
     $promo = new Promociones();
     $database = $promo->getDataBaseName();
     $table = $promo->getTableName();
     $promo->conecta();
     if (is_resource($promo->_dbLink)) {
         $query = "SELECT p.Id " . "FROM {$database}.{$table} p, {$database}.AgtArticulos a " . "WHERE p.IdArticulo=a.Id AND " . " a.IdFirma='{$idFirma}' AND " . " a.IdFamilia='{$idFamilia}'";
         //echo $query,"<br/>";
         $promo->_em->query($query);
         $rows = $promo->_em->fetchResult();
     }
     return $rows;
 }