public void test() { transport = Transport.example6(); UnitOfWork uow = getSession().acquireUnitOfWork(); uow.registerObject(transport); uow.commit(); transportId = transport.getId(); DatabaseSession session = (DatabaseSession) getSession(); ExpressionBuilder exp = new ExpressionBuilder(); Expression expression = exp.get("id").equal(transportId); transport = (Transport) session.readObject(Transport.class, expression); }