I getting things clear.
Scenario is:
I have one server, and need to deploy same application twice, but one
should not access database information from another.
So, when I "build" application on NetBeans, I have a custom ANT build
step that changes all .XML files to point to correct database - but I
would not change .java files (where PU is defined).
About point 1 you highlited, I think is exactly problem I'm facing
(since I have two applications using a static PersistenceManager it's
being tied up to one classloader !?).
About point 2, my expectation is two applications having same PU name
access different databases (and have own cache - so they don't trows
ClassCastException when loading a Customer from Database).
So, the point is: is possible to load PersistenceContext from JNDI in
either Tomcat and Glassfish, so I don't need two different pieces of
code for each server?
Thanks for help!
Edson Richter
glassfish_at_javadesktop.org escreveu:
> Whether TopLink will work in your scenario or not, will depend on 2 things - your expectations and the class loader.
>
> 1. The class loader. In the same class loader, there can be only one PU with a particular name. I think there is an open issue to allow the same name but different overrides as specified in the map that you pass to Persistence.createEMF() call.
>
> 2. Expectations. Do you expect those two apps to share a PU or have their own copies? Depending on how Tomcat handles class loaders (GF uses a separate class loader for each application), you'll get a different answer to your original question.
>
> Regards,
> -marina
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