* .UrlQueue)
     */
    @Override
    public void insert(final UrlQueueImpl<Long> urlQueue) {
        final Queue<UrlQueueImpl<Long>> urlQueueList = dataHelper.getUrlQueueList(urlQueue.getSessionId());
        synchronized (urlQueueList) {
            urlQueueList.add(urlQueue);
        }
    }

    /*
     * (non-Javadoc)
     *

                    uq.setSessionId(crawlerContext.getSessionId());
                    uq.setUrl(d.getUrl());
                    uq.setMetaData(d.getMetaData());
                    return uq;
                }).collect(Collectors.toList());

        if (!childList.isEmpty()) {
            CrawlingParameterUtil.getUrlQueueService().offerAll(crawlerContext.getSessionId(), childList);
        }
    }

            }
            accessResultData.setId(accessResult.getId());

            final Map<String, AccessResultImpl<Long>> arMap = dataHelper.getAccessResultMap(accessResult.getSessionId());
            if (arMap.containsKey(accessResult.getUrl())) {
                throw new CrawlerSystemException(accessResult.getUrl() + " already exists.");
            }

            final String url = urlQueue.getUrl();
            ResponseData responseData = null;
            try {
                final CrawlingConfig crawlingConfig = crawlingConfigHelper.get(crawlerContext.getSessionId());
                final Map<String, Object> dataMap = new HashMap<>();
                dataMap.put(fessConfig.getIndexFieldUrl(), url);
                final List<String> roleTypeList = new ArrayList<>();

                if (sessionId.equals(urlQueue.getSessionId()) && url.equals(urlQueue.getUrl())) {
                    return true;
                }
            }
            for (final UrlQueue<String> urlQueue : waitingQueue) {
                if (sessionId.equals(urlQueue.getSessionId()) && url.equals(urlQueue.getUrl())) {
                    return true;
                }

    @Override
    public void setId(final IDTYPE id) {
        this.id = id;
    }

    /*
     * (non-Javadoc)
     *
     * @see org.codelibs.fess.crawler.entity.AccessResult#getSessionId()
     */
    @Override
    public String getSessionId() {
        return sessionId;
    }

    /*
     * (non-Javadoc)
     *
     * @see org.codelibs.fess.crawler.entity.AccessResult#setSessionId(java.lang.String)
     */

    @Override
    public void setId(final IDTYPE id) {
        this.id = id;
    }

    /*
     * (non-Javadoc)
     *
     * @see org.codelibs.fess.crawler.entity.UrlQueue#getSessionId()
     */
    @Override
    public String getSessionId() {
        return sessionId;
    }

    /*
     * (non-Javadoc)
     *
     * @see org.codelibs.fess.crawler.entity.UrlQueue#setSessionId(java.lang.String)
     */

                    RenderDataUtil.register(data, "crawlingInfoParamItems", crawlingInfoService.getCrawlingInfoParamList(id));
                    RenderDataUtil.register(data, "running", processHelper.isProcessRunning(entity.getSessionId()));
                })).orElseGet(() -> {
                    throwValidationError(messages -> messages.addErrorsCrudCouldNotFindCrudTable(GLOBAL, id), this::asListHtml);
                    return null;

    /** a max depth for crawling. -1 is no depth check. */
    protected int maxDepth = -1;

    /** a max count to access urls. 0 is no limit to access it. */
    protected long maxAccessCount = 0;

    public String getSessionId() {
        return sessionId;
    }

    public void setSessionId(final String sessionId) {
        this.sessionId = sessionId;
    }

    public Integer getActiveThreadCount() {

            file.deleteOnExit();
            fileTransformer.setPath(file.getAbsolutePath());

            final Crawler crawler1 = crawlerContainer.getComponent("crawler");
            crawler1.setSessionId(crawler1.getSessionId() + "1");
            crawler1.setBackground(true);
            ((UrlFilterImpl) crawler1.urlFilter).setIncludeFilteringPattern("$1$2$3.*");
            crawler1.addUrl(url1);