使用Hibernate的session执行任意SQL语句以及整个事务

Session session =  getSession();
        session.beginTransaction();
        Query query = session.createQuery("update Useraccount set meeting=meeting+1,useMeeting=useMeeting-1 where userId=(select userId from Signup where id="+signupID+") and chargesbasis=(select a.chargesbasis  from Signup as s,Activities as a where s.id="+signupID+" and s.activitiesId=a.id)");
        query.executeUpdate();
        query=session.createQuery("delete from Signup where id="+signupID);
        query.executeUpdate();
        session.beginTransaction().commit();
        if(session!=null){
            session.close();
        }
很简单的哈