DirContextHolder holder = contextLocal.get();
        if (holder != null) {
            holder.inc();
            return holder;
        }
        final Hashtable<String, String> env = envSupplier.get();
        try {
            holder = new DirContextHolder(new InitialDirContext(env));
            contextLocal.set(holder);
            return holder;
        } catch (final NamingException e) {

    protected static final String CACHE_MSG = "cache_msg";

    protected static final Pattern LOCAL_PATH_PATTERN = Pattern.compile("^file:/+[a-zA-Z]:");

    protected static final Pattern SHARED_FOLDER_PATTERN = Pattern.compile("^file:/+[^/]\\.");

    protected static final String ELLIPSIS = "...";

    protected boolean encodeUrlLink = false;

    protected String urlLinkEncoding = Constants.UTF_8;

    /** The key of the message: File */
    public static final String LABELS_storage_file = "{labels.storage_file}";

    /** The key of the message: Folder Name */
    public static final String LABELS_storage_folder_name = "{labels.storage_folder_name}";

    /** The key of the message: Download */
    public static final String LABELS_storage_button_download = "{labels.storage_button_download}";

        exp = "index.html";
        assertEquals(exp, transformer.getFileName(url, Constants.UTF_8));

        url = "http://example.com/" + encodeUrl("#") + "/@@folder/test.txt";
        exp = "test.txt";
        assertEquals(exp, transformer.getFileName(url, Constants.UTF_8));

        url = "http://example.com/test%20+%2B.txt";
        exp = "test  +.txt";