private void index() {
DatabaseUtil dbUtil = DatabaseUtil.getSingleton();
try {
DatabaseUtil.getSingleton().beginTransaction(SystemPrincipal.getCredentials());
LiusConfig lc = LiusConfigBuilder.getSingletonInstance().getLiusConfig(IndexerServlet.getIndexConfigFilePath());
JCRIndexer indexer = new JCRIndexer();
indexer.setUp(lc);
List folders = FolderDao.createInstance().list();