appendJson("user-session-id", entity.getUserSessionId(), buf).append(',');
                appendJson("user", entity.getUser(), buf).append(',');
                appendJson("search-word", entity.getSearchWord(), buf).append(',');
                appendJson("hit-count", entity.getHitCount(), buf).append(',');
                appendJson("query-page-size", entity.getQueryPageSize(), buf).append(',');