* is serviced. The alternative complicates things
             * more than I think is worth it.
             */

            if( socket != null ) {
                socket.close();
                socket = null;
            }
            thread = null;
            responseTable.clear();
        }
    }
    public void run() {
        int nameTrnId;
        NameServicePacket response;

     * @param model The model to wrap, may be {@code null}.
     */
    ModelData(Source source, Model model) {
        this.source = source;
        this.model = model;
    }

    /**
     * Creates a new container for the specified model.
     *
     * @param model The model to wrap, may be {@code null}.
     * @param groupId The effective group identifier of the model, may be {@code null}.

     * @param profile The (read-only) profile whose values should be injected, may be <code>null</code>.
     * @param request The model building request that holds further settings, must not be {@code null}.
     * @param problems The container used to collect problems that were encountered, must not be {@code null}.
     */

        Objects.requireNonNull(output, "output cannot be null");
        Objects.requireNonNull(model, "model cannot be null");

        String encoding = model.getModelEncoding();
        if (encoding == null || encoding.isEmpty()) {
            encoding = "UTF-8";
        }

        try (Writer out = new OutputStreamWriter(output, encoding)) {
            write(out, options, model);

            throws GraphConflictResolutionException {
        if (policy == null) {
            throw new GraphConflictResolutionException("no GraphConflictResolutionPolicy injected");
        }

        if (graph == null) {
            return null;
        }

        final MetadataGraphVertex entry = graph.getEntry();
        if (entry == null) {
            return null;
        }

        if (graph.isEmpty()) {

    @Override
    public boolean isAvailable() {
        if (available != null) {
            return available;
        }
        if (generatorList != null && !generatorList.isEmpty()) {
            String path = System.getenv("PATH");
            if (path == null) {
                path = System.getenv("Path");
            }
            if (path == null) {
                path = System.getenv("path");
            }

     * @return 削除されたエントリ。キーに対応するエントリがなかった場合は{@literal null}
     */
    protected Entry<K, V> removeMap(final Object key) {
        int hashCode = 0;
        int index = 0;

        if (key != null) {
            hashCode = key.hashCode();
            index = (hashCode & 0x7FFFFFFF) % mapTable.length;
            for (Entry<K, V> e = mapTable[index], prev = null; e != null; prev = e, e = e.next) {

        final String requestsPerSecond = getReindexRequestsPerSecound(fessConfig);
        final String scroll = StringUtil.isNotBlank(fessConfig.getIndexReindexScroll()) ? fessConfig.getIndexReindexScroll() : null;
        final String maxDocs = StringUtil.isNotBlank(fessConfig.getIndexReindexMaxDocs()) ? fessConfig.getIndexReindexMaxDocs() : null;

        super(
            domain != null ? domain : tc.getConfig().getDefaultDomain(),
            username != null ? username : ( tc.getConfig().getDefaultUsername() != null ? tc.getConfig().getDefaultUsername() : "GUEST" ),
            password != null ? password : ( tc.getConfig().getDefaultPassword() != null ? tc.getConfig().getDefaultPassword() : "" ),
            (AuthenticationType) null);
        this.context = tc;
    }

    public ExtractData getText(final InputStream in, final Map<String, String> params) {
        if (in == null) {
            throw new CrawlerSystemException("The inputstream is null.");
        }

        final String password = getPassword(params);
        try (PDDocument document = PDDocument.load(in, password == null ? null : password)) {
            final StringWriter writer = new StringWriter();