}

    /**
     * Gets the not modified HTTP codes.
     *
     * @return the not modified HTTP codes
     */
    public int[] getNotModifiedHttpCodes() {
        return notModifiedHttpCodes;
    }

    /**
     * Sets the not modified HTTP codes.
     * @param notModifiedHttpCodes The not modified HTTP codes to set.
     */

    /**
     * Returns the last modified time of the accessed resource.
     *
     * @return the last modified time
     */
    Long getLastModified();

    /**
     * Sets the last modified time of the accessed resource.
     *
     * @param lastModified the last modified time
     */
    /**
     * Sets the last modified time of the accessed resource.
     *

    CLEANUP_CRAWLING,
    /** Indicates an unsupported URL was encountered when crawling started. */
    UNSUPPORTED_URL_AT_CRAWLING_STARTED,
    /** Indicates checking the last modified date of a resource. */
    CHECK_LAST_MODIFIED,
    /** Indicates the resource has not been modified. */
    NOT_MODIFIED,
    /** Indicates getting content from a resource. */
    GET_CONTENT,
    /** Indicates a redirect location was found. */
    REDIRECT_LOCATION,

 * and processing of Sitemap data.
 * </p>
 *
 * <p>
 * The {@code loc} attribute specifies the URL of the Sitemap, while the {@code lastmod} attribute
 * indicates the last time the Sitemap file was modified.  The {@code lastmod} attribute is used by crawlers
 * to incrementally fetch sitemaps that have been updated since a certain date.
 * </p>
 *
 * <p>

        final UrlQueue<?> urlQueue = (UrlQueue<?>) objs[1];
        if (logger.isInfoEnabled()) {
            logger.info("Not modified URL: {}", urlQueue.getUrl());
        }
    }

    /**
     * Processes check last modified log events.
     *
     * @param objs the log objects (should contain UrlQueue)
     */
    protected void processCheckLastModified(final Object... objs) {

     */
    void setDepth(Integer depth);

    /**
     * Returns the last modified timestamp of the URL in the queue.
     *
     * @return the last modified timestamp as a Long value.
     */
    Long getLastModified();

    /**
     * Sets the last modified timestamp for the URL queue entry.
     *

<map version="0.7.1">
<node TEXT="&#12479;&#12452;&#12488;&#12523;">
<node TEXT="&#12486;&#12473;&#12488;" MODIFIED="1237874353965" STYLE="fork"/>
</node>

     */
    public static final int OK_STATUS = 0;

    /**
     * The status code for Not Modified.
     */
    public static final int NOT_MODIFIED_STATUS = 304;

    /**
     * The HTTP status code for OK.
     */
    public static final int OK_STATUS_CODE = 200;

    /**
     * The HTTP status code for Not Modified.
     */
    public static final int NOT_MODIFIED_STATUS_CODE = 304;

    /**

    }

    /**
     * Gets the last modified date of the resource.
     *
     * @return the last modified date, or null if not available
     */
    public Date getLastModified() {
        return lastModified;
    }

    /**
     * Sets the last modified date of the resource.
     *
     * @param lastModified the last modified date to set
     */

/**
 * Implementation of the {@link UrlQueue} interface.
 * This class represents a URL to be crawled, storing its ID, session ID,
 * HTTP method, URL, metadata, encoding, parent URL, depth, last modified time,
 * creation time, and weight.
 *
 * @param <IDTYPE> the type of the identifier for the URL queue entry
 */
public class UrlQueueImpl<IDTYPE> implements UrlQueue<IDTYPE> {