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https://issues.apache.org/jira/browse/OPENJPA-2766?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16739481#comment-16739481
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Matt Pavlovich commented on OPENJPA-2766:
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[~romain.manni-bucau] What am I misunderstanding?
Single Classloader:
https://docs.oracle.com/javaee/7/api/javax/persistence/spi/PersistenceUnitInfo.html#getClassLoader--
Classes listed by (String) name (not Class<?>):
https://docs.oracle.com/javaee/7/api/javax/persistence/spi/PersistenceUnitInfo.html#getManagedClassNames--
> Modularity support
> ------------------
>
> Key: OPENJPA-2766
> URL: https://issues.apache.org/jira/browse/OPENJPA-2766
> Project: OpenJPA
> Issue Type: New Feature
> Reporter: Matt Pavlovich
> Priority: Major
>
> Support modular organization of entities so that all entities do not need to
> be contained in the same jar, or referenced in a single persistence.xml
> <class> listing.
> Use cases:
> 1. Jar A contains entityA, Jar B contains entityB. (EntityB may or may not
> extend from entityA.)
> 2. Jar X contains persistence.xml defining the PU
> 3. Jar C contains entityC and a list of classes that extend entityA. Jar X
> persistence unit should be able to persist entityC and its collection of
> entityA, entityB.. etc
> Features:
> 1. Auto-classpath scanning (perhaps for persistence-fragment.xml.. then
> enumerate)
> 2. Support manual registration and unregistration of entity classes (not just
> class names) to support OSGi environments that have per-bundle classloaders
> and deploy/undeploy support.
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