/** It is invoked for JUnit test */ @Atomic(mode = TxMode.WRITE) public static void initDatabase() { if (LdoD.getInstance() == null) { new LdoD(); populateDatabaseUsersAndRoles(); // clean Lucene Indexer indexer = new Indexer(); indexer.cleanLucene(); // clean Mallet directory TopicModeler topicModeler = new TopicModeler(); topicModeler.cleanDirectory(); } }