public void test() throws Exception { Database db = getJDOManager(DBNAME, MAPPING).getDatabase(); db.begin(); LOG.info("Begin transaction to query log entries"); OQLQuery oql = db.getOQLQuery("SELECT e FROM " + LogEntry.class.getName() + " e"); QueryResults results = oql.execute(); while (results.hasMore()) { LogEntry entry = (LogEntry) results.next(); int id = entry.getId().intValue(); boolean isRefering = (entry instanceof ReferingLogEntry); boolean isException = (entry.getException() != null); if (LOG.isDebugEnabled()) { LOG.debug(id + "/" + isRefering + "/" + isException); } switch (id) { case 1: case 2: case 7: case 9: case 10: case 12: case 15: assertFalse(isRefering); assertFalse(isException); break; case 3: case 4: case 8: case 13: assertFalse(isRefering); assertTrue(isException); break; case 5: case 6: case 11: case 14: assertTrue(isRefering); assertFalse(isException); break; default: fail(); } } LOG.info("End transaction to query log entries"); db.commit(); db.close(); }