Persistence context scope and @EJB injection

[horst21]

Hello,

I got a Problem with ejb3 stateless-session beans, @ejb injection and the persistence context.
The setup is this:
1) a stateless-session-bean that is a session-facade
2) a stateless-session-bean that is a dao
3) the session-fascade uses the dao (includes it with a @EJB annotation)

no transaction annotations are used

The problem is as follows:
1) a call to the session-fascade is made
2) the session fascade makes a call on the dao, in order to load an ejb3-entity-bean. this entity bean includes a collection that is lazy loaded.
3) the entity bean is loaded an returned to the session fascade
4) the session fascade tries to access the lazy-collection of the entity-bean -> this results in a org.hibernate.LazyInitializationException

this looks like the persistent-context is not the same in the session-fascade and the dao. but since no transaction annotations are used in the session beans, I think the persistent context should be the same, shouldn't it?

when i do not use the @EJB injection, but look up the dao in jndi myself, i can access the lazy-collection. I thought that these two option should result in the same behaviour, shouldn't they?

thanks for your help, cheers.

[epbernard]

if you can provide a minimal test case, post it to JIRA

[horst21]

while trying to create a simple testcase I found out what the problem is:
if the dao interface contains a @Remote annotation(regardless whether @Local is there too), it does not work. if there is only a @Local annotation it works.
it seems, that the @ejb injection uses always the remote interface if available and calls to the remote interface start a new transaction (and create a new hibernatesession / entitymanager), doesn't it?

[epbernard]

cool thanks for tracking it down. Open a ira issue, while this might not be a bug per se, that's interesting to track down this remote preference :-)

[horst21]

jira issue created an testcase attached:
http://jira.jboss.com/jira/browse/EJBTHREE-577