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https://issues.apache.org/jira/browse/OPENJPA-1593?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12978244#action_12978244
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Wolfgang Glas commented on OPENJPA-1593:
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The way to go here is to register a service listener for a
javax.transaction.TransactionManager inside
org.apache.openjpa.persistence.osgi.PersistenceActivator.start(BundleContext)
with a filter expression of
"(objectClass=javax.transaction.TransactionManager)"
The best solution would be to let OSGiManagedRuntime implement OSGi's
ServiceListener and openjpa's ManagedRuntime interfaces and maintain
a synchronized copy of the TransactionManager inside OSGiManagedRuntime.
And yes, I would really like to have this feature in openjpa-2.1.0 ;-)
Best regards,
Wolfgang
> Create an OSGiManagedRuntime
> ----------------------------
>
> Key: OPENJPA-1593
> URL: https://issues.apache.org/jira/browse/OPENJPA-1593
> Project: OpenJPA
> Issue Type: Sub-task
> Components: osgi
> Affects Versions: 2.0.0-beta
> Reporter: Donald Woods
> Assignee: Donald Woods
> Fix For: 2.1.0
>
>
> Follow-on to OPENJPA-1524 to create a generic OSGiManagedRuntime class that
> would work for vendors/frameworks other than Apache Aries.
> Tim's original suggestion was - One implementation suggestion would be to use
> a ServiceTracker to keep track of the JTA services. This would allow for lazy
> lookup and also provide a notification if the service is unregistered.
> This should then be possible to implement as a relatively simple subclass of
> RegistryManagedRuntime that overrides getTransactionManager(). I don't know
> if you have a nice mechanism to pass a BundleContext yet, but I don't think
> that should pose a significant problem.
> Now that we have a BundleUtils.java to require OSGi classes in our runtime,
> we should be able to lookup
> "javax.transaction.TransactionSynchronizationRegistry" from the
> ServiceRegistry to use, instead of relying on the current JNDI lookup which
> is Aries specific.
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