This week's book giveaway is in the General Computing forum. We're giving away four copies of Arduino in Action and have Martin Evans, Joshua Noble, and Jordan Hochenbaum on-line! See this thread for details.
I'm developing a JavaEE6 application, and I need to communicate two EJBs, one in the business tier and the other in the persistence tier. The persistence EJB doesn't deal with a model, it just queries a chaotic database running on SQL Server 2005, but I use an EntityManager so I don't have to worry about transactions anyway ;) So the code is something like this:
Persistence EJB (Local interface):
Persistence EJB (implementation):
I've checked it's not a problem with the connection between the EJBs adding a method with no persistence access and it works like a charm. And it shouldn't be a problem with the persistence unit configuracion 'cause when I turned the LogReader class into a @ManagedBean it also works.
But this way, when it gets to the 'em.createNamedQuery' statement it shows the following error: 'javax.ejb.EJBException: Unable to complete container-managed transaction.'
And the stack trace is:
Sorry for the stack trace's length, but I guess it is better for it to be too long than too short
Does somebody have any idea? Thanks in advance.