Object idf = PersistenceSessionUtil.createSession();
EntityManager session = PersistenceSessionUtil.getSession();
EntityTransaction tx = session.getTransaction();
tx.begin();
flvRecordingMetaDelta = session.merge(flvRecordingMetaDelta);
Long flvRecordingMetaDeltaId = flvRecordingMetaDelta.getFlvRecordingMetaDeltaId();
tx.commit();
PersistenceSessionUtil.closeSession(idf);