Coherent usage of Hibernate's session and DAO

Question

public void something()
{
 Session session = HibernateUtil.newSession();
 AModelDAO amd = new AModelDAO(session);
 BModelDAO bmd = new BModelDAO(session);
 Transaction tx = session.beginTransaction();
 amd.savesomething(object);
 bmd.savesomething(object2);
 tx.commit();
 session.close();
}

I would like to know if my coding here is good enough or if there is a better method to produce the same result.

• Kinjal: I do not know hibernate. This is a general guideline that you should handle exception here and also think of the case where the transaction fails and how you revert back the state.
• devpadak: of course I handled exception... In my example code, I skipped exception.

Answer 1

Instead of working with Hibernate sessions, I encourage you to use the JPA API. I think this is the most common way to work with Hibernate now. (http://www.theserverside.com/news/2240186700/The-JPA-20-EntityManager-vs-the-Hibernate-Session-Which-one-to-use)

For the transaction aspects and the initialization of your DAOs, I also think that a solution like Spring (http://projects.spring.io/spring-framework/) would help to simplify the code of your application.

Your code would look more like the following (with annotations stuff):

public class MyService {
 @Resource
 private AModelDAO aDao;
 @Transactional
 public void something(object) {
 // no need to manage transactions or sessions here
 aDao.save(object);
 }
}