private WhereSql buildWhereSql(NodeOnOfflineLogPaginationReq request){
        return new WhereSql()
                .andOnNotEmpty("identity = ?", request.getIdentity())
                .andOnNotEmpty("group = ?", request.getGroup())
                .andOnNotEmpty("event = ?", request.getEvent())
                .andBetween("log_time", request.getStartLogTime(), request.getEndLogTime());
    }
@author Robert HG (254963746@qq.com) on 3/9/16.
lts-admin/src/main/java/com/github/ltsopensource/admin/access/mysql/MysqlBackendNodeOnOfflineLogAccess.java