* @param metadataMap the map for metadata extraction
     * @param depth the current depth in the JSON structure
     */
    protected void extractContent(final JsonNode node, final String parentKey, final StringBuilder textBuilder,
            final Map<String, List<String>> metadataMap, final int depth) {
        if (node == null || depth > maxDepth) {
            return;
        }

        if (node.isObject()) {

     */
    @Override
    public Integer getDepth() {
        return depth;
    }

    /*
     * (non-Javadoc)
     *
     * @see org.codelibs.fess.crawler.entity.UrlQueue#setDepth(java.lang.Integer)
     */
    @Override
    public void setDepth(final Integer depth) {
        this.depth = depth;
    }

    /*
     * (non-Javadoc)
     *

        this.maxThreadCheckCount = maxThreadCheckCount;
    }

    /**
     * Returns the maximum depth.
     * @return The maximum depth.
     */
    public int getMaxDepth() {
        return maxDepth;
    }

    /**
     * Sets the maximum depth.
     * @param maxDepth The maximum depth.
     */
    public void setMaxDepth(final int maxDepth) {
        this.maxDepth = maxDepth;
    }

                }
                final int depth = urlQueue.getDepth() == null ? 1 : urlQueue.getDepth() + 1;
                if (crawlerContext.getMaxDepth() < 0 || depth <= crawlerContext.getMaxDepth()) {
                    // add and filter urls
                    storeChildUrls(crawlerContext, resultData.getChildUrlSet(), urlQueue.getUrl(), depth, resultData.getEncoding());
                }

    public static final String URL = "url";

    /**
     * Field name for parent URL.
     */
    public static final String PARENT_URL = "parentUrl";

    /**
     * Field name for depth.
     */
    public static final String DEPTH = "depth";

    /**
     * Field name for last modified timestamp.
     */
    public static final String LAST_MODIFIED = "lastModified";

    /**
     * Field name for creation time.

            final int depth) {
        if (logger.isDebugEnabled()) {
            logger.debug("[processParentGroup] Processing parent groups for id: {}, depth: {}/{}", id, depth, maxGroupDepth);
        }
        if (depth >= maxGroupDepth) {
            if (logger.isDebugEnabled()) {
                logger.debug("[processParentGroup] Maximum group depth {} reached for group {}", maxGroupDepth, id);
            }

                                    </tr>
                                    <tr>
                                        <th><la:message key="labels.depth"/></th>
                                        <td>${f:h(depth)}<la:hidden property="depth"/></td>
                                    </tr>
                                    <tr>

                                    </tr>
                                    <tr>
                                        <th><la:message key="labels.depth"/></th>
                                        <td>${f:h(depth)}<la:hidden property="depth"/></td>
                                    </tr>
                                    <tr>

                                    <label for="depth" class="col-sm-3 text-sm-right col-form-label"><la:message
                                            key="labels.depth"/></label>
                                    <div class="form-inline col-sm-9">
                                        <la:errors property="depth"/>
                                        <input type="number" name="depth" id="depth"

         * @param url the URL to crawl
         * @param depth the depth of this URL in the crawling hierarchy
         */
        CrawlRequest(final String url, final int depth) {
            this.url = url;
            this.depth = depth;
        }

        /**
         * Gets the URL of this crawl request.
         *
         * @return the URL to be crawled
         */
        public String getUrl() {