crudMode = CrudMode.CREATE;
        boost = 1.0f;
        sortOrder = 0;
        createdBy = ComponentUtil.getSystemHelper().getUsername();
        createdTime = ComponentUtil.getSystemHelper().getCurrentTimeAsLong();
        permissions = ComponentUtil.getFessConfig().getSearchDefaultDisplayPermission();
    }

            final Integer timeToLive = config.getTimeToLive();
            if (timeToLive != null) {
                // timeToLive minutes
                final long now = ComponentUtil.getSystemHelper().getCurrentTimeAsLong();
                return new Date(now + timeToLive.longValue() * 1000 * 60);
            }
        }
        return documentExpires != null ? new Date(documentExpires) : null;
    }

    /**

        final SystemHelper systemHelper = ComponentUtil.getSystemHelper();
        systemHelper.calibrateCpuLoad();

        final long startTime = systemHelper.getCurrentTimeAsLong();
        final FessConfig fessConfig = ComponentUtil.getFessConfig();
        final SearchEngineClient searchEngineClient = ComponentUtil.getSearchEngineClient();

        if (logger.isDebugEnabled()) {

                } catch (final Exception e) {
                    logger.warn("Failed to stop job: {}", jobLog, e);
                }
            }
            jobLog.setEndTime(ComponentUtil.getSystemHelper().getCurrentTimeAsLong());
            if (logger.isDebugEnabled()) {
                logger.debug("jobLog={}", jobLog);
            }
            if (scheduledJob.isLoggingEnabled()) {
                jobHelper.store(jobLog);

        if (ComponentUtil.getFessConfig().isIncrementalCrawling()) {

            final SystemHelper systemHelper = ComponentUtil.getSystemHelper();
            final long startTime = systemHelper.getCurrentTimeAsLong();

            final FessConfig fessConfig = ComponentUtil.getFessConfig();
            final CrawlingConfigHelper crawlingConfigHelper = ComponentUtil.getCrawlingConfigHelper();

                            systemHelper.getCurrentTimeAsLong() - execTime, MemoryUtil.byteCountToDisplaySize(docList.getContentSize()),
                            MemoryUtil.getMemoryUsageLog());
                } else {
                    logger.info("Sent {} documents (send={}ms, {})", docList.size(), systemHelper.getCurrentTimeAsLong() - execTime,
                            MemoryUtil.getMemoryUsageLog());

        intervalTime = Constants.DEFAULT_INTERVAL_TIME_FOR_FS;
        sortOrder = 0;
        createdBy = ComponentUtil.getSystemHelper().getUsername();
        createdTime = ComponentUtil.getSystemHelper().getCurrentTimeAsLong();
        permissions = fessConfig.getSearchDefaultDisplayPermission();
    }

        final StringBuilder resultBuf = new StringBuilder();

        // purge crawling sessions
        try {
            crawlingInfoService.deleteBefore(systemHelper.getCurrentTimeAsLong());
        } catch (final Exception e) {
            logger.error("Failed to purge crawling sessions.", e);
            resultBuf.append(e.getMessage()).append("\n");
        }

        // purge search logs

                final Long expiredTime = accessToken.getExpiredTime();
                if (expiredTime != null && expiredTime.longValue() > 0
                        && expiredTime.longValue() < ComponentUtil.getSystemHelper().getCurrentTimeAsLong()) {
                    throw new InvalidAccessTokenException("invalid_token",
                            "The token is expired(" + FessFunctions.formatDate(FessFunctions.date(expiredTime)) + ").");
                }

            final long tokenExpiryTime = authResult.expiresOnDate().getTime(); // milliseconds since epoch
            final long currentTime = ComponentUtil.getSystemHelper().getCurrentTimeAsLong(); // milliseconds since epoch
            if (tokenExpiryTime < currentTime) {
                if (logger.isDebugEnabled()) {