Java - Lucene in RAM - withpit tokenizer

gistfile1.java

        RAMDirectory ramDirectory = new RAMDirectory();
        Analyzer analyzer = new SimpleAnalyzer(Version.LUCENE_36);
        IndexWriterConfig config = new IndexWriterConfig(Version.LUCENE_36, analyzer);
        int processed = 0;
        try {
            IndexWriter writer = new IndexWriter(ramDirectory, config);
            writer.commit();

            ......

            IndexReader reader = IndexReader.open(ramDirectory);
            IndexSearcher searcher = new IndexSearcher(reader);
            TopDocs docs = searcher.search(new FuzzyQuery(new Term(ALIAS, alias), 0.8f), 10);

            if (docs.totalHits > 0) {
                 for (int q = 0; q < docs.scoreDocs.length; q++) {
                      String synonym = searcher.doc(docs.scoreDocs[q].doc).get(ALIAS);
            ......            

            Document document = new Document();
            document.add(new Field(ALIAS, alias, Field.Store.YES, Field.Index.NOT_ANALYZED_NO_NORMS));
            writer.addDocument(document);
            writer.commit();