public function __construct()
{
// $connection = array(
// 'dbms'=>'mysql',
// 'hostname'=>(C('SEARCHD_HOST') ? C('SEARCHD_HOST') : $this->host),
// 'hostport'=>(C('SEARCHD_PORT') ? C('SEARCHD_PORT') : $this->port)
// );
// $this->sdb = new Db($connection);
}