crawler2.getCrawlerContext().setNumOfThread(numOfThread);

            final String sessionId1 = crawler1.execute();
            final String sessionId2 = crawler2.execute();

            assertNotSame(sessionId1, sessionId2);
            assertNotSame(crawler1.crawlerContext, crawler2.crawlerContext);

            Thread.sleep(1000);

        }
    }

    @Override
    public void delete(final String sessionId) {
        deleteBySessionId(sessionId);
    }

    @Override
    public void offerAll(final String sessionId, final List<OpenSearchUrlQueue> urlQueueList) {
        if (logger.isDebugEnabled()) {
            logger.debug("Offering URL: Session ID: {}, UrlQueue: {}", sessionId, urlQueueList);
        }

    public void setId(final String id) {
        this.id = id;
    }

    public String getSessionId() {
        return sessionId;
    }

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

    public String getFilterType() {
        return filterType;
    }

    public void setFilterType(final String filterType) {
        this.filterType = filterType;
    }

            crawler2.getCrawlerContext().setNumOfThread(numOfThread);

            final String sessionId1 = crawler1.execute();
            final String sessionId2 = crawler2.execute();

            assertNotSame(sessionId1, sessionId2);
            assertNotSame(crawler1.crawlerContext, crawler2.crawlerContext);

            Thread.sleep(1000);

        final JobProcess jobProcess = runningProcessMap.remove(sessionId);
        return destroyProcess(sessionId, jobProcess);
    }

    public boolean isProcessRunning() {
        return !runningProcessMap.isEmpty();
    }

    public boolean isProcessRunning(final String sessionId) {
        final JobProcess jobProcess = runningProcessMap.get(sessionId);

    public void addIncludeUrlFilter(final String sessionId, final String url) {
        dataHelper.addIncludeUrlPattern(sessionId, url);
    }

    /*
     * (non-Javadoc)
     *
     * @see
     * org.codelibs.fess.crawler.service.impl.UrlFilterService#addIncludeUrlFilter(java
     * .lang.String, java.util.List)
     */
    @Override
    public void addIncludeUrlFilter(final String sessionId, final List<String> urlList) {

        if (sessionId == null) { // create session id
            sessionId = RandomStringUtils.randomAlphabetic(15);
        }
        resultBuf.append("Session Id: ").append(sessionId).append("\n");
        if (jobExecutor != null) {
            jobExecutor.addShutdownListener(() -> ComponentUtil.getProcessHelper().destroyProcess(sessionId));
        }

        final Object sessionId = sessionIdProp.getValue(target);
        return sessionId == null ? null : sessionId.toString();
    }

    private String getSessionId(final Object target) {
        final BeanDesc beanDesc = BeanDescFactory.getBeanDesc(target.getClass());
        final PropertyDesc sessionIdProp = beanDesc.getPropertyDesc(SESSION_ID);
        final Object sessionId = sessionIdProp.getValue(target);

        cachedExcludeSet.clear();
        if (sessionId != null) {
            getUrlFilterService().delete(sessionId);
        }
    }

    /*
     * (non-Javadoc)
     *
     * @see org.codelibs.fess.crawler.filter.UrlFilter#init(java.lang.String)
     */
    @Override
    public void init(final String sessionId) {
        this.sessionId = sessionId;
        if (!cachedIncludeSet.isEmpty()) {

        this.name = value;
    }

    public String getSessionId() {
        checkSpecifiedProperty("sessionId");
        return convertEmptyToNull(sessionId);
    }

    public void setSessionId(String value) {
        registerModifiedProperty("sessionId");
        this.sessionId = value;
    }