String cmd = "";
        final Map<String, String> params = new HashMap<String, String>();
        List<String> list = extractor.parseCommand(cmd, params);
        assertEquals(0, list.size());

        cmd = "test.sh";
        params.clear();
        list = extractor.parseCommand(cmd, params);
        assertEquals(1, list.size());
        assertEquals("test.sh", list.get(0));

     * Constructor with configurable delay parameters.
     *
     * @param params map containing delay parameters
     */
    public DefaultIntervalController(final Map<String, Long> params) {
        Long millis = params.get("delayMillisAfterProcessing");
        if (millis != null) {
            delayMillisAfterProcessing = millis;
        }

        millis = params.get("delayMillisAtNoUrlInQueue");
        if (millis != null) {

    /**
     * Sets the initialization parameters for the crawler client.
     *
     * @param params a map containing the initialization parameters
     */
    void setInitParameterMap(Map<String, Object> params);

    /**
     * Executes a request and returns the response data.
     *
     * @param data the request data to be executed
     * @return the response data from the executed request
     */

        return new Extractor() {
            @Override
            public ExtractData getText(final InputStream in, final Map<String, String> params) {
                for (final Extractor extractor : extractors) {
                    try {
                        return extractor.getText(in, params);
                    } catch (final UnsupportedExtractException e) {
                        if (logger.isDebugEnabled()) {

        final Map<String, String> params = new HashMap<>();
        params.put(ExtractData.RESOURCE_NAME_KEY, filename);
        return getContentType(is, params);
    }

    @Override
    public String getContentType(final InputStream is, final Map<String, String> params) {
        final String filename = params.get(ExtractData.RESOURCE_NAME_KEY);

    /**
     * Returns the password for the given parameters.
     * @param params The parameters.
     * @return The password.
     */
    protected String getPassword(final Map<String, String> params) {
        final String url = params != null ? params.get(ExtractData.URL) : null;
        if (!passwordMap.isEmpty()) {
            final String resourceName = params != null ? params.get(ExtractData.RESOURCE_NAME_KEY) : null;

        super();
    }

    /**
     * Extracts text from the PowerPoint input stream.
     * @param in The input stream.
     * @param params The parameters.
     * @return The extracted data.
     */
    @Override
    public ExtractData getText(final InputStream in, final Map<String, String> params) {
        if (in == null) {
            throw new CrawlerSystemException("The inputstream is null.");
        }

     * These parameters will be applied to the wrapped factory upon calling initParameterMap().
     * @param params The map of parameters.
     */
    @Override
    public void setInitParameterMap(final Map<String, Object> params) {
        this.params.putAll(params);
    }

    /**
     * Initializes the parameter map of the wrapped factory with the parameters stored in this wrapper.
     */

        final ExtractorFactory extractorFactory = new ExtractorFactory();
        final Extractor extractor = new Extractor() {
            public ExtractData getText(final InputStream in, final Map<String, String> params) {
                return null;
            }
        };

        assertNull(extractorFactory.getExtractor("test"));
        extractorFactory.addExtractor("test", extractor);

     *
     * @param builder The XContentBuilder to write to.
     * @param params Additional parameters for the conversion.
     * @return The XContentBuilder with the access result data.
     * @throws IOException if the conversion fails.
     */
    @Override
    public XContentBuilder toXContent(final XContentBuilder builder, final Params params) throws IOException {
        builder.startObject();