On Mar 25, 2008, at 8:57 AM, <[EMAIL PROTECTED]> <[EMAIL PROTECTED]
> wrote:
Hi,
I have want to test some internal used beans which access entity
beans.
The problem is now, that the unit test wants to test a service which
return an entity. This entity has a colelction member, something like
this:
@Entity
Class A {
Private List<B> bs;
public List<B> getBs() {
return bs;
}
...
}
The collection bs is lazy initialized and should be. So, if I want to
access the bs from the returned entity instance A, I get a
LazyInitializationException. How can I test internal used services? Is
there a godd way to do this? Until now I have only tested Beans which
return transfer objects, but know this would be necessary.
Hi Karsten,
I'm not too sure what an org.hibernate.LazyInitializationException
is. I checked out the online api docs and it mentions that's what you
get when a "session" is closed. Not sure how a hibernate session
relates to JPA concepts.
In your @PersistenceContext ref, are you using
PersistenceContextType.EXTENDED or
PersistenceContextType.TRANSACTION? (TRANSACTION is the default if
unspecified)
In your persistence.xml is your unit declared as transaction-
type="RESOURCE_LOCAL" or transaction-type="TRANSACTION"? (TRANSACTION
is the default if unspecified)
Before I get the answers to those questions I'll make an uninformed
guess that you're using TRANSACTION for both of the above and what's
happening is your transaction is starting and completing around the
ejb method that calls "getBs()" and returns the list. By the time you
test case (which isn't in a transaction) gets the List<B> the
transaction has completed and all the refs in it are considered
Detached in JPA terms. That's just a guess, but if I'm right you
could try switching to PersistenceContextType.EXTENDED and use an
@Stateful bean, or you could run your unit test in a transaction which
will widen the transactional scope from just the bean method to
encompassing the while test method (http://openejb.apache.org/3.0/unit-testing-transactions.html
).
Let me know if my guess is right or wrong, the question is likely to
come up again.
-David
