} else {
            stopwordPath = null;
        }

        ignoreCase = settings.getAsBoolean("ignore_case", false);
        reloadInterval = settings.getAsTime("reload_interval", TimeValue.timeValueMinutes(1)).getMillis();
    }

    @Override
    public TokenStream create(final TokenStream tokenStream) {
        if (stopwordPath == null) {
            return tokenStream;