if (validationError != null) {
            throw new IllegalArgumentException("Validation error: " + validationError);
        }

        if (logger.isDebugEnabled()) {
            logger.debug("Adding bad word: index={}, word={}", arraySettings.arraySettingsIndexName, badWord);
        }
        arraySettings.add(BAD_WORD_SETTINGS_KEY, badWord);
    }

    /**

     * @param url The URL to add.
     */
    public void addUrl(final String url) {
        try {
            urlQueueService.add(crawlerContext.sessionId, url);
            if (logger.isDebugEnabled()) {
                logger.debug("Added URL to queue: url={}, sessionId={}", url, crawlerContext.sessionId);
            }
        } catch (final Exception e) {

        final FessConfig fessConfig = ComponentUtil.getFessConfig();
        final SystemHelper systemHelper = ComponentUtil.getSystemHelper();
        final long execTime = systemHelper.getCurrentTimeAsLong();
        if (logger.isDebugEnabled()) {
            logger.debug("Sending {} documents to a server.", docList.size());
        }
        try {
            if (fessConfig.isThumbnailCrawlerEnabled()) {

    /**
     * Initializes the transformer after dependency injection.
     * Sets up the Fess configuration and data serializer components.
     */
    @PostConstruct
    public void init() {
        if (logger.isDebugEnabled()) {
            logger.debug("Initializing {}", this.getClass().getSimpleName());
        }
        fessConfig = ComponentUtil.getFessConfig();
        dataSerializer = ComponentUtil.getComponent("dataSerializer");
    }

    }

    @Override
    public void debug(String message, Throwable throwable) {
        setMdc();
        logger.debug(message, throwable);
    }

    @Override
    public boolean isDebugEnabled() {
        return logger.isDebugEnabled();
    }

    @Override
    public void info(String message) {
        setMdc();
        logger.info(message);
    }

    @Override

    public void close() {
        if (httpClient == null) {
            return;
        }
        if (logger.isDebugEnabled()) {
            logger.debug("Closing HTTP client...");
        }
        if (connectionMonitorTask != null) {
            connectionMonitorTask.cancel();
            if (logger.isDebugEnabled()) {
                logger.debug("Connection monitor task cancelled");
            }
        }

            try {
                final String line = br.readLine();
                if (line == null) {
                    running = false;
                } else {
                    if (logger.isDebugEnabled()) {
                        logger.debug(line);
                    }
                    if (bufferSize > 0) {
                        list.add(line);
                    }

     * @throws ChildUrlsException if the URI represents a directory with child URLs
     */
    protected ResponseData getResponseData(final String uri, final boolean includeContent) {
        if (logger.isDebugEnabled()) {
            logger.debug("Accessing S3 object: uri={}, includeContent={}", uri, includeContent);
        }
        final ResponseData responseData = new ResponseData();
        try {

            try (CurlResponse response = Curl.post(url).header("Content-Type", "application/json").body(body).execute()) {
                if (response.getHttpStatusCode() == 200) {
                    if (logger.isDebugEnabled()) {
                        logger.debug("Sent {} to {}.", body, url);
                    }
                } else {

        error.printStackTrace(pWriter);

        System.err.println("[error] " + sWriter);
    }

    /**
     * @see org.apache.maven.plugin.logging.Log#isDebugEnabled()
     */
    @Override
    public boolean isDebugEnabled() {
        // TODO Not sure how best to set these for this implementation...
        return false;
    }

    /**