* @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());
                }

            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);
            }

    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.

      "nested2": { "nested2arr": [0,1,2], "nested3": {
        "nested4": { "depth": "recursion" }}
			}
		}
  },
  "2": {
    "nullfield": null,
    "id": -2
  }
}`
	)

	decoder := NewDecoder(mkReader(body), 2)

	for mv = range decoder.Stream() {
		counter++
		t.Logf("depth=%d offset=%d len=%d (%v)", mv.Depth, mv.Offset, mv.Length, mv.Value)
	}

	if err := decoder.Err(); err != nil {

			Length:    int(d.pos - offset),
			Depth:     d.depth,
			Value:     i,
			ValueType: t,
		}
	}
	return i, err
}

// return whether, at the current depth, the value being decoded will
// be emitted to stream
func (d *Decoder) willEmit() bool {
	if d.emitRecursive {
		return d.depth >= d.emitDepth
	}
	return d.depth == d.emitDepth
}

                                    </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>