GWT Gilead (JPA configuration)

问题

From the Gilead official site:

Note that you still have to properly initialize PersistentBeanManager with associated PersistenceUtil, proxy store and possibly class mapper. This must be done before any remote call, in Remote Service constructor or in inherited "init" method (do not forget to call super.init() !):

public UserRemoteImpl()
{
HibernateUtil hibernateUtil = new HibernateUtil(MyApplicationHibernateUtil.getSessionFactory());

PersistentBeanManager persistentBeanManager = GwtConfigurationHelper.initGwtStatelessBeanManaer(hibernateUtil);

setBeanManager(persistentBeanManager);
}

I Use JPA, do i have to do something different?

回答1:

If you're using JPA with Hibernate, you can use HibernateJpaUtil like this:

String PERSISTENCE_UNIT_NAME = "...";
EntityManagerFactory emf = 
    Persistence.createEntityManagerFactory(PERSISTENCE_UNIT_NAME);

HibernateJpaUtil hibernateJpaUtil = new HibernateJpaUtil();
hibernateJpaUtil.setEntityManagerFactory(emf);

PersistentBeanManager persistentBeanManager =
    GwtConfigurationHelper.initGwtStatelessBeanManager(hibernateJpaUtil);

setBeanManager(persistentBeanManager);

If you're using JPA with another implementation than Hibernate, you're probably currently out of luck - or you'd have to implement IPersistenceUtil yourself.

http://noon.gilead.free.fr/gilead/index.php?page=overview :

even if Hibernate is the only one currently supported, OpenJPA and EclipseLink supports is planned

来源：https://stackoverflow.com/questions/5567444/gwt-gilead-jpa-configuration