assertArgumentNotNull("clazz", clazz);

        if (!initialized) {
            initialize();
        }
        Logger logger = loggers.get(clazz);
        if (logger == null) {
            logger = new Logger(clazz);
            loggers.put(clazz, logger);
        }
        return logger;
    }

    /**
     * フォーマットされたメッセージ文字列を返します。
     *
     * @param messageCode

 * @see ResourceTraversalUtil
 */
public abstract class TraversalUtil {

    /** 空の{@link Traverser}の配列です。 */
    protected static final Traverser[] EMPTY_ARRAY = new Traverser[0];

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

    /** URLのプロトコルをキー、{@link TraverserFactory}を値とするマッピングです。 */
    protected static final ConcurrentMap<String, TraverserFactory> traverserFactories = newConcurrentHashMap();
    static {

labels.popular_word_word_enabled	=	Réponse de mot populaire
labels.supported_search_web	=	Web
labels.supported_search_none	=	Indisponible
labels.purge_search_log_day	=	Purger le journal de recherche avant
labels.purge_job_log_day	=	Purger le journal des tâches avant
labels.purge_user_info_day	=	Purger le journal utilisateur avant
labels.purge_by_bots	=	Nom des robots pour la purge
labels.log_level	=	Niveau de journalisation

            while (current >= percent) {
                if (logger.isInfoEnabled()) {
                    logger.info("Cpu Load {}% is greater than {}%. {} waiting thread(s).", current, percent, waitingThreadNames.size());
                }
                if (logger.isDebugEnabled()) {
                    logger.debug("Waiting threads: {}", waitingThreadNames);
                }

                logger.info("Copying from {} to {}", oldIndex, index);
                if (!client.reindex(oldIndex, index, false)) {
                    logger.warn("Failed to copy from {} to {}", oldIndex, index);
                }
            } else if (logger.isDebugEnabled()) {
                if (!client.existsIndex(oldIndex)) {
                    logger.debug("{} does not exist.", oldIndex);