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Hibernate version:
3.2

Hello,

I want to retrieve a proxy object of an entity using hibernate session and 'get(Class)'. Is it possible and how ?
Actually, when I use 'session.get(MyEntity.class)', it return an instance of MyEntity and not a proxy. So, when I change the entity using a setter, nothing is updated into the database or cache. I must use 'flush' or call an other method to synchronize the dirty object to the database.

When I use the same code in EJB3, it is the same trouble. The returned object is the entity, not the proxy so when I want to use a remote client, it don't work because it don't know the Entity class, only its interface.

Generally, you want to use transactions.
You can either start them yourself :


Better (more clean) is to configure your session to use JTA and let the EJB container take care of the transactions (using CMT).
At transaction commit time, the updates should happen (or earlier when needed, or when you call flush(), but this all depends on what you do, what your mappings are, etc.).

See http://www.hibernate.org/42.html

Thanks

Ok, JTA is available only in the JBoss context, not in standalone one with tomcat. So, in this last configuration (hibernate + tomcat), I must use the session methods to flush or commit all the changes ?

Use the session to get a transaction, and commit that transaction when you are done.
Flush can be used within the transaction to force SQL statements to be executed (but not committed).
Committing is not the same as flushing!

Thanks