if (str == null) {
            return null;
        }
        return new String[] { str };
    }

    protected LocalDateTime toLocalDateTime(Object value) {
        return DfTypeUtil.toLocalDateTime(value);
    }

    protected Date toDate(Object value) {
        return DfTypeUtil.toDate(value);
    }

                clickLog.setUrl(url);
                clickLog.setRequestedAt(systemHelper.getCurrentTimeAsLocalDateTime());
                clickLog.setQueryRequestedAt(DfTypeUtil.toLocalDateTime(Long.parseLong(form.rt)));
                clickLog.setUserSessionId(userSessionId);
                clickLog.setDocId(form.docId);
                clickLog.setQueryId(form.queryId);

        if (str == null) {
            return null;
        }
        return new String[] { str };
    }

    protected LocalDateTime toLocalDateTime(Object value) {
        return DfTypeUtil.toLocalDateTime(value);
    }

    protected Date toDate(Object value) {
        return DfTypeUtil.toDate(value);
    }

        if (str == null) {
            return null;
        }
        return new String[] { str };
    }

    protected LocalDateTime toLocalDateTime(Object value) {
        return DfTypeUtil.toLocalDateTime(value);
    }

    protected Date toDate(Object value) {
        return DfTypeUtil.toDate(value);
    }

        // search log
        if (fessConfig.isSearchLog()) {
            ComponentUtil.getSearchLogHelper()
                    .addSearchLog(params, DfTypeUtil.toLocalDateTime(requestedTime), queryId, query, params.getStartPosition(),
                            params.getPageSize(), queryResponseList);
        }

        // favorite
        if (fessConfig.isUserFavorite()) {