if (fessConfig.isWebApiPopularWord()) {
            final List<String> tagList = new ArrayList<>();
            final String key = ComponentUtil.getVirtualHostHelper().getVirtualHostKey();
            if (StringUtil.isNotBlank(key)) {
                tagList.add(key);
            }
            runtime.registerData("popularWords", popularWordHelper.getWordList(SearchRequestType.SEARCH, null,

                if (b == '\n' || b == '\r' || buf.size() >= MAX_LEN) {
                    try {
                        final String msg = buf.toString(Constants.UTF_8);
                        if (StringUtil.isNotBlank(msg)) {
                            if (logger.isTraceEnabled()) {
                                logger.trace(msg);
                            } else if (logger.isDebugEnabled()) {

        });
        if (list.isEmpty()) {
            return Collections.emptyList();
        }

        Pattern pattern = null;
        if (StringUtil.isNotBlank(ignoreFailureType)) {
            pattern = Pattern.compile(ignoreFailureType);
        }
        final List<String> urlList = new ArrayList<>();
        for (final FailureUrl failureUrl : list) {

            if (form.doc != null) {
                docId = (String) form.doc.get(fessConfig.getIndexFieldDocId());
            } else {
                docId = null;
            }
            if (StringUtil.isNotBlank(docId)) {
                return searchEngineClient.getDocument(fessConfig.getIndexDocumentUpdateIndex(), builder -> {
                    builder.setQuery(QueryBuilders.termQuery(fessConfig.getIndexFieldDocId(), docId));

            if (SpnegoHttpFilter.Constants.LOGGER_LEVEL.equals(name)) {
                final String logLevel = getProperty(SPNEGO_LOGGER_LEVEL, StringUtil.EMPTY);
                if (StringUtil.isNotBlank(logLevel)) {
                    return logLevel;
                }
                if (logger.isDebugEnabled()) {
                    return "3";
                }
                if (logger.isInfoEnabled()) {

     *
     * @param str
     *            the string to check
     * @return {@literal true} if the string is not blank
     * @see #isBlank(String)
     */
    public static boolean isNotBlank(final String str) {
        return !isBlank(str);
    }

    /**
     * Returns true if the string contains the specified character.
     *
     * @param str
     *            the string to check

     */
    public FesenClient() {
        address = System.getProperty(HTTP_ADDRESS, "localhost:9200").trim();
        final String targets = System.getProperty(TARGET_INDICES);
        if (StringUtil.isNotBlank(targets)) {
            targetIndices = Arrays.stream(targets.split(",")).map(String::trim).toArray(n -> new String[n]);
        }
    }

    /**
     * Sets the address of the OpenSearch instance.

            availableSearcherNameSet = Collections.emptySet();
        } else {
            availableSearcherNameSet = StreamUtil.split(value, ",")
                    .get(stream -> stream.map(String::trim).filter(StringUtil::isNotBlank).collect(Collectors.toUnmodifiableSet()));
        }
        if (logger.isDebugEnabled()) {
            logger.debug("availableSearcherNameSet={}", availableSearcherNameSet);
        }
    }

    @Override

        }
        final String[] values = value.split("[\r\n]");
        final List<String> list = new ArrayList<>(values.length);
        for (final String line : values) {
            if (StringUtil.isNotBlank(line)) {
                list.add(line.trim());
            }
        }
        return list.toArray(new String[list.size()]);
    }

                            }
                        }
                    }

                    parent = parent.getParentNode();
                }
            }

            if (StringUtil.isNotBlank(namespace)) {
                return namespace;
            }
            return "http://crawler.codelibs.org/namespace/" + prefix;
        }

        @Override