Question

I have decided to use Spring, Hibernate, and Restlet to create a web service. I am new to all of these three technologies. My question is this: How do I decide whether to use JPA’s EntityManager or Hibernate’s HibernateTemplate?

Code snippet for JPA’s EntityManager:

protected EntityManager entityManager;

@PersistenceContext
public void setEngityManager(EntityManager entityManger) {
    this.entityManager = entityManager;
}

Code snippet for Hibernate’s HibernateTemplate:

private SessionFactory sessionFactory;
private HibernateTemplate hibernateTemplate;

@Autowired
public void setSessionFactory(SessionFactory sessionFactory) {
    this.sessionFactory = sessionFactory;
    this.hibernateTemplate = new HibernateTemplate(sessionFactory);
}

Answer 1

If you are someone who like interface-based-implementation, then JPA is the interface definition and Hibernate is one of the implementations. We decided to use JPA semantics in our project (with a very long term plan to replace Hibernate with something similar and light-weight probably).