6:13 p.m.
Scott,
The Enterprise OSGi spec defines the roles of
* JPA Provider - An implementation of JPA, providing the Persistence
Provider and JPA Services
* Persistence Bundle - A bundle that includes, a Meta-Persistence
header, one or more Persistence Descriptor resources, and the entity
classes specified by the Persistence Units in those resources.
* Client Bundle - The bundle that uses the Persistence Bundle to
retrieve and store objects.
in the context of a pure OSGi Runtime (i.e. Felix, Equinox). What we
need to do in the context of AS7 is to make sure that client bundles
developed against the this spec run on AS7. We are not trying to build
an OSGi JPA Provider that runs on a pure OSGi Runtime - so integration
rather than implementation.
This essentially means that the JPA subsubsystem and its associated OSGi
extension can handle OSGi JPA deployments and make the
EntityManagerFactory/EntityManagerFactoryBuilder services available.
I took a first hit on this task and filed #2992
<https://github.com/jbossas/jboss-as/pull/2992> which would resolve
[AS7-5405] Initial Enterprise OSGi JPA implementation
<https://issues.jboss.org/browse/AS7-5405>;. As the name suggests this is
an initial implementation which supports the deployment of an
persistence/client bundle, registers EntityManagerFactory and exercises
entity persistence on the default provider.
Additionally, I filed [AS7-5476] Complete support for OSGi JPA
<https://issues.jboss.org/browse/AS7-5476> which outlines missing
functionality that I'm aware of.
The HHH-7527 effort can be done in parallel, but is not a prerequisite
for Enterprise OSGi JPA in AS7.
cheers
--thomas
On 08/31/2012 03:42 PM, Scott Marlow wrote:
Thomas,
I see that AS7-5465 is targeted for AS 7.2 but 7.2 doesn't package a
OSGI enabled persistence provider. That will change when we add OSGI
support to Hibernate (via HHH-7527 & anything else that is needed).
Its not yet clear which version of AS, will be aligned with the
Hibernate version that includes the OSGi support.
I believe that the EclipseLink persistence provider has OSGi support.
Not sure yet about the others. We will soon have the ability to
(globally) configure the default persistence provider (module name).
So, it should be less pain to choose an OSGi enabled provider of the
users choice.
So, until we have a OSGi enabled version of Hibernate in AS, how can
we test with another OSGi enabled persistence provider? I heard that
we have some unit tests that download Maven artifacts via the
ShrinkWrap Maven resolver but I have yet to see that in action in the
AS7 tests that I have looked at.
What do you suggest for testing this OSGi Enterprise JPA stuff...
Scott
On 08/31/2012 07:16 AM, Thomas Diesler wrote:
> Hi Paul,
>
> could you possibly provide a javax.persistence API bundle?
>
> https://issues.jboss.org/browse/AS7-5465
>
> cheers
> --thomas
>
--
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Thomas Diesler
JBoss OSGi Lead
JBoss, a division of Red Hat
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