/**
  * 添加资源
  * 
  * @param array $data
  * @return integer
  */
 public function insert($data)
 {
     foreach ($data as $key => $value) {
         if (!is_scalar($value)) {
             $data[$key] = Zend_Json::encode($value);
         }
     }
     return $this->_resourceDAO->insert($data);
 }