private function getDao($db_hostname, $db_username, $db_pass, $db_name)
 {
     if (is_null(self::$instance)) {
         self::$instance = new DaoPedidos($db_hostname, $db_username, $db_pass, $db_name);
     }
     return self::$instance;
 }
 public function get($user = "")
 {
     if ($user != "") {
         $res = DaoPedidos::getDb()->getResultsFromQuery("SELECT id,nombre,usuario,password, null email FROM [SAVX].[dbo].[Usuario] WHERE borrado = 'N' AND usuario = '{$user}'");
         foreach ($res as $user) {
             $this->id = $user['id'];
             $this->name = $user['nombre'];
             $this->user_name = $user['usuario'];
             $this->password = $user['password'];
             $this->email = $user['email'];
         }
         if ($this->id != "") {
             $res = DaoPedidos::getDb()->getResultsFromQuery("select top 1 id,nombre from UsuarioXRol ur inner join Rol r on ur.rol_id = r.id where ur.usuario_id = {$this->id}");
             foreach ($res as $rol) {
                 $this->rol = $rol;
             }
         }
     }
 }