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https://issues.apache.org/jira/browse/GERONIMO-5606?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12909067#action_12909067
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Jarek Gawor commented on GERONIMO-5606:
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This actually gets pretty tricky. OpenJPA uses the classloader to discover all
META-INF/orm.xml files and tries to compare them against persistenceUnitRoot of
the PU to make sure that given orm.xml belongs to the right PU. The URLs
returned by classloader.getResources() are "bundle" type of URLs as generated
by the framework. Now, in PersistenceUnitGBean we know which embedded jar file
contains the PU but there is no easy way to generate a proper "bundle" type of
url using the Bundle API. And if we can't generate a proper persistenceUnitRoot
URL, OpenJPA will fail to discover the orm.xml and possibly other resources.
> Bad persistenceUnitRoot for PUs in jars embedded in WARs
> --------------------------------------------------------
>
> Key: GERONIMO-5606
> URL: https://issues.apache.org/jira/browse/GERONIMO-5606
> Project: Geronimo
> Issue Type: Bug
> Security Level: public(Regular issues)
> Components: persistence
> Affects Versions: 3.0
> Reporter: Jarek Gawor
> Assignee: Jarek Gawor
> Fix For: 3.0
>
>
> The persistenceUnitRoot for PUs in jars embedded in WARs is computed
> incorrectly which for example causes the META-INF/orm.xml files not to be
> discovered by OpenJPA.
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