delimiters = settings.get("delimiters", NGramSynonymTokenizer.DEFAULT_DELIMITERS);
        expand = settings.getAsBoolean("expand", true);

        settings.getAsBoolean("expand_ngram", false); // TODO remove

        synonymLoader = new SynonymLoader(env, settings, expand, SynonymLoader.getAnalyzer(ignoreCase));
        if (synonymLoader.getSynonymMap() == null) {

    private final Settings settings;

    private final boolean expand;

    private long reloadInterval = 0;

    private final Environment env;

    private volatile long lastModified;

    private volatile long lastChecked;

    private volatile SynonymMap synonymMap;

    public SynonymLoader(final Environment env, final Settings settings, final boolean expand, final Analyzer analyzer) {
        this.env = env;

    protected NGramSynonymTokenizer(final int n, final String delimiters, final boolean expand, final boolean ignoreCase,
            final SynonymLoader synonymLoader) {
        this.n = n;
        this.delimiters = delimiters;
        this.expand = expand;
        this.ignoreCase = ignoreCase;
        if (synonymLoader != null) {
            if (synonymLoader.isReloadable()) {

    /**
     * If true, the parser will convert CDATA nodes to Text nodes and append them to the adjacent Text node.
     */
    protected boolean coalescing;

    /**
     * If true, the parser will expand entity reference nodes.
     */
    protected boolean expandEntityRef = false;

    /**
     * If true, the parser will ignore comments.
     */
    protected boolean ignoringComments;

    /**