return new byte[0];
    }

    @Override
    public void tearDown() throws IOException {}
  }

  private abstract static class FileFactory {

    private static final Logger logger = Logger.getLogger(FileFactory.class.getName());

    private final ThreadLocal<File> fileThreadLocal = new ThreadLocal<>();

    File createFile() throws IOException {

 *
 * Character mapping files contain mapping rules in the format:
 * input1,input2,... => output
 */
public class CharMappingFile extends DictionaryFile<CharMappingItem> {
    /** Logger instance for this class. */
    private static final Logger logger = LogManager.getLogger(CharMappingFile.class);

    /** Type identifier for character mapping dictionaries. */
    private static final String MAPPING = "mapping";

 *   crawler.addUrl("http://example.com/");
 *   crawler.execute();
 *   crawler.close();
 * </pre>
 */
public class Crawler implements Runnable, AutoCloseable {

    private static final Logger logger = LogManager.getLogger(Crawler.class);

    /**
     * Service for managing URL queues during crawling.
     */
    @Resource
    protected UrlQueueService<UrlQueue<?>> urlQueueService;

    /**

                        logger.warn("Terminating process {} is timed out.", p);
                    } else if (logger.isDebugEnabled()) {
                        logger.debug("Terminated process {}.", p);
                    }
                } catch (final Exception e) {
                    logger.warn("Failed to stop destroyer.", e);
                }
            } else {
                if (logger.isDebugEnabled()) {

 * @author koichik
 */
public abstract class ZipInputStreamUtil {

    private static final Logger logger = Logger.getLogger(ZipInputStreamUtil.class);

    /**
     * Do not instantiate.
     */
    protected ZipInputStreamUtil() {
    }

    /**
     * A method that wraps the exception handling of {@link ZipInputStream#getNextEntry()}.
     *
     * @param zis

 * the stored file path as a File object.
 * </p>
 */
public class FileTransformer extends HtmlTransformer {
    /** Logger instance for this class */
    private static final Logger logger = LogManager.getLogger(FileTransformer.class);

    /**
     * Constructs a new FileTransformer.
     */
    public FileTransformer() {
        // Default constructor
    }

import org.dbflute.util.DfTypeUtil;

/**
 * @author FreeGen
 */
public class SearchLogBhv extends BsSearchLogBhv {
    private static final Logger logger = LogManager.getLogger(SearchLogBhv.class);

    private String indexName = null;

    @Override
    protected String asEsIndex() {
        if (indexName == null) {
            final String name = ComponentUtil.getFessConfig().getIndexLogIndex();

            } else if (logger.isInfoEnabled()) {
                logger.info("IndexUpdater is terminated.");
            }
            forceStop();
        } catch (final Throwable t) {
            if (ComponentUtil.available()) {
                logger.error("IndexUpdater is terminated.", t);
            } else if (logger.isDebugEnabled()) {
                logger.error("IndexUpdater is terminated.", t);

        if (e.isDebugEnabled()) {
            logger.debug("Crawling Access Exception at {}", urlQueue.getUrl(), e);
        } else if (e.isInfoEnabled()) {
            logger.info(e.getMessage());
        } else if (e.isWarnEnabled()) {
            logger.warn("Crawling Access Exception at " + urlQueue.getUrl(), e);
        } else if (e.isErrorEnabled()) {
            logger.error("Crawling Access Exception at " + urlQueue.getUrl(), e);

 * It collects and logs information about the operating system, process,
 * JVM, and search engine.
 */
public class SystemMonitorTarget extends MonitorTarget {
    private static final Logger logger = LogManager.getLogger(SystemMonitorTarget.class);

    /**
     * Constructs a new system monitor target.
     */
    public SystemMonitorTarget() {
        super();
    }

    @Override