final SystemHelper systemHelper = ComponentUtil.getSystemHelper();

        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");
        }

import org.codelibs.fess.helper.SystemHelper;

public class UserInfoService {

    @Resource
    private UserInfoBhv userInfoBhv;

    @Resource
    private SystemHelper systemHelper;

    public void deleteBefore(final int days) {
        userInfoBhv.queryDelete(cb -> {
            cb.query().setUpdatedAt_LessEqual(systemHelper.getCurrentTimeAsLocalDateTime().minusDays(days));
        });
    }

        // setup condition
        cb.query().addOrderBy_StartTime_Desc();
        cb.query().addOrderBy_EndTime_Desc();

        // search

    }

    public void deleteBefore(final int days) {
        final long oneday = 24 * 60 * 60 * 1000L;
        final long targetTime = ComponentUtil.getSystemHelper().getCurrentTimeAsLong() - days * oneday;
        jobLogBhv.queryDelete(cb -> {

            });
            csvWriter.flush();
        } catch (final IOException e) {
            logger.warn("Failed to write a crawling session info.", e);
        }
    }

    public void deleteBefore(final long date) {
        crawlingInfoBhv.selectBulk(cb -> cb.query().setExpiredTime_LessThan(date), list -> {
            final List<String> idList = list.stream().map(CrawlingInfo::getId).collect(Collectors.toList());

    @Resource
    private UserInfoBhv userInfoBhv;

    @Resource
    private SystemHelper systemHelper;

    @Resource
    protected FessConfig fessConfig;

    public void deleteBefore(final int days) {
        searchLogBhv.queryDelete(cb -> {
            cb.query().setRequestedAt_LessEqual(systemHelper.getCurrentTimeAsLocalDateTime().minusDays(days));
        });
    }