protected function setUp()
 {
     $db_util = DbTestUtil::instance();
     $db_util->emptyTable('member');
     $this->_dao = DAOFactory::getDAOFactory(DAOFactory::DB);
     $this->_member_dao = $this->_dao->getMemberDAO();
 }
 public function instance()
 {
     if (!self::$_instance) {
         self::$_instance = new self();
     }
     return self::$_instance;
 }