urlQueueMap.put(sessionId, uqList);
    }

    public synchronized void removeUrlQueueList(final String sessionId) {
        urlQueueMap.remove(sessionId);
    }

    public synchronized void clearUrlQueueList() {
        urlQueueMap.clear();
    }

    public synchronized Map<String, AccessResultImpl<Long>> getAccessResultMap(final String sessionId) {

    }

    /*
     * (non-Javadoc)
     *
     * @see org.codelibs.fess.crawler.service.DataService#deleteAll()
     */
    @Override
    public void deleteAll() {
        dataHelper.clearUrlQueueList();
    }

    /*
     * (non-Javadoc)
     *
     * @see
     * org.codelibs.fess.crawler.service.DataService#getAccessResult(java.lang.String,
     * java.lang.String)
     */
    @Override

    }

    /*
     * (non-Javadoc)
     *
     * @see org.codelibs.fess.crawler.service.UrlQueueService#deleteAll()
     */
    @Override
    public void deleteAll() {
        dataHelper.clearUrlQueueList();
    }

    /*
     * (non-Javadoc)
     *
     * @see org.codelibs.fess.crawler.service.UrlQueueService#offerAll(java.lang.String,
     * java.util.List)
     */
    @Override