* <p>
     * If the object is null, an empty list is returned.
     * If the object is a string, a list containing that string is returned.
     * If the object is a list, it is cast to a list of strings and returned.
     * </p>
     *
     * @param value the object to be converted to a list of strings
     * @return a list of strings representing the given object

 * It uses a ConcurrentMap to store the last access time for each host.
 * The delayBeforeProcessing method is overridden to introduce a delay before processing a URL,
 * ensuring that requests to the same host are not made too frequently.
 * The delay is calculated based on the configured delayMillisBeforeProcessing parameter.
 * If the time since the last request to the host is less than the configured delay,

        this.loc = loc;
    }

    /**
     * Returns the last modification date of this sitemap entry.
     * @return the last modification date
     */
    @Override
    public String getLastmod() {
        return lastmod;
    }

    /**
     * Sets the last modification date of this sitemap entry.
     * @param lastmod the last modification date 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.
     *

     * @see org.codelibs.fess.crawler.entity.Sitemap#getLastmod()
     */
    @Override
    public String getLastmod() {
        return lastmod;
    }

    /**
     * Sets the last modification time of the sitemap.
     * @param lastmod the last modification time in W3C Datetime format
     */
    public void setLastmod(final String lastmod) {
        this.lastmod = lastmod;
    }

    /**

                if (logger.isDebugEnabled()) {
                    logger.warn("[{}][{}] Failed to analyze a last text(size:{}).", field, lang, buf.length(), e);
                } else {
                    logger.warn("[{}][{}] Failed to analyze a last text(size:{}). {}", field, lang, buf.length(), e.getMessage());
                }
            }
        }
        return tokens;
    }

        } finally {
            FileUtil.deleteInBackground(tempFile);
        }
    }

    /**
     * Marks the current position in this input stream. A subsequent call to the reset method repositions this stream at the last marked position so that subsequent reads re-read the same bytes.
     * This method delegates to {@link FileInputStream#mark(int)}.
     *

 * </p>
 * <ul>
 *   <li>Starting and finishing threads</li>
 *   <li>Starting and cleaning up crawling</li>
 *   <li>Handling unsupported URLs</li>
 *   <li>Checking last modified dates</li>
 *   <li>Getting content</li>
 *   <li>Handling redirects</li>
 *   <li>Processing responses</li>
 *   <li>Handling exceptions during crawling and child URL processing</li>

    }

    /**
     * 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
     */

package org.codelibs.fess.crawler.entity;

/**
 * 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> {