protected String commandOutputEncoding = Charset.defaultCharset().displayName();

    /** The maximum number of lines to buffer from command output. */
    protected int maxOutputLine = 1000;

    /** Whether to redirect standard output to a file. */
    protected boolean standardOutput = false;

    /**
     * Constructs a new CommandExtractor.
     */
    public CommandExtractor() {

        private final Map<String, Object> dataMap = new HashMap<>();

        private String fieldName;

        private final StringBuilder buffer = new StringBuilder(1000);

        @Override
        public void startDocument() {
            dataMap.clear();
        }

        @Override

        }

        final MimeTypeHelper mimeTypeHelper = getMimeTypeHelper();
        final ExtractorFactory extractorFactory = getExtractorFactory();
        final StringBuilder buf = new StringBuilder(1000);

        File tempFile = null;
        LhaFile lhaFile = null;
        try {
            tempFile = createTempFile("crawler-", ".lzh", null);
            try (FileOutputStream fos = new FileOutputStream(tempFile)) {

     * @return the extracted body text
     * @throws ExtractException if extraction fails
     */
    protected String getBodyText(final MimeMessage message) {
        final StringBuilder buf = new StringBuilder(1000);
        try {
            final Object content = message.getContent();
            if (content instanceof final Multipart multipart) {
                final int count = multipart.getCount();

            throw new CrawlingAccessException("Could not parse " + responseData.getUrl(), e);
        }
        final Document document = parser.getDocument();

        final StringBuilder buf = new StringBuilder(1000);
        buf.append(getResultDataHeader());
        for (final Map.Entry<String, String> entry : fieldRuleMap.entrySet()) {
            final String path = entry.getValue();
            try {

            } else {
                LogStream.setLevel(0);
            }
        }

        LogStream.setInstance(new PrintStream(new OutputStream() {
            private static final int MAX_LEN = 1000;

            private final ByteArrayOutputStream buf = new ByteArrayOutputStream(MAX_LEN);

            @Override
            public void write(final int b) throws IOException {

    /**
     * Test edge cases for rule ID
     */
    public void test_ruleId_edgeCases() {
        // Very long rule ID
        StringBuilder longId = new StringBuilder();
        for (int i = 0; i < 1000; i++) {
            longId.append("verylongruleid");
        }
        testRule.setRuleId(longId.toString());
        assertEquals(longId.toString(), testRule.getRuleId());

        // Special characters in rule ID

            final DocumentBuilder builder = factory.newDocumentBuilder();

            final Document doc = builder.parse(is);

            final StringBuilder buf = new StringBuilder(1000);
            buf.append(getResultDataHeader());
            for (final Map.Entry<String, String> entry : fieldRuleMap.entrySet()) {
                final List<String> nodeStrList = new ArrayList<>();
                try {

    }

    /**
     * Test thread safety of enum
     */
    public void test_threadSafety() throws Exception {
        final int threadCount = 100;
        final int iterationsPerThread = 1000;
        final Set<Exception> exceptions = new HashSet<>();

        Thread[] threads = new Thread[threadCount];
        for (int i = 0; i < threadCount; i++) {
            threads[i] = new Thread(new Runnable() {

     */
    protected Map<String, QueueHolder> sessionCache = new ConcurrentHashMap<>();

    /**
     * The number of URLs to fetch when polling.
     */
    protected int pollingFetchSize = 1000;

    /**
     * The maximum size of the crawling queue.
     */
    protected int maxCrawlingQueueSize = 100;

    /**
     * Creates a new instance of OpenSearchUrlQueueService.