private function operateDeleteLog($sql, $params)
 {
     $this->setParams($params);
     $sign = ACloudSysCoreCommon::getSiteSign();
     setcookie('_ac_' . $sign, intval(ACloudVerDataFlowAggregate::getDeleteSig()), time() + 60);
     $sqlLogService = ACloudSysCoreCommon::loadSystemClass('sql.log', 'config.service');
     $fields = array('log' => $this->buildSql($sql));
     return $sqlLogService->addSqlLog($fields);
 }