code: func (s *XormLogger) Level() core.LogLevel {
  	switch s.level {
  	case glog.LvlError:
  		return core.LOG_ERR
  	case glog.LvlWarn:
  		return core.LOG_WARNING
  	case glog.LvlInfo:
  		return core.LOG_INFO
  	case glog.LvlDebug:
  		return core.LOG_DEBUG
  	default:
  		return core.LOG_ERR
  	}
  }
docs: // Level implement core.ILogger