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https://issues.apache.org/jira/browse/OPENJPA-2405?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13695657#comment-13695657
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Mark Struberg commented on OPENJPA-2405:
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> Managed entities are also provided by find/query operations (though it would
> return a detached entity if it's a CMTS entitymanager invocation outside of a
> transaction.)
Well, this is not quite what I do read from the JPA and JTA specs. The spec
says that in such cases all query operations must succeed (thus also lacy
loading shall work) but all write operations must get queued until the
EntityManager joins a transaction.
And this mechanism is lacking in OpenJPA I fear. At least I'm not aware that we
can do this somehow.
> EntityManager.merge does not work for entity that is managed by another
> EntityManager
> -------------------------------------------------------------------------------------
>
> Key: OPENJPA-2405
> URL: https://issues.apache.org/jira/browse/OPENJPA-2405
> Project: OpenJPA
> Issue Type: Bug
> Affects Versions: 2.2.3
> Reporter: Arne Limburg
> Attachments: OPENJPA-2405.patch
>
>
> EntityManager.merge does not work for entity that is managed by another
> EntityManager. Instead of updating that entity OpenJPA tries to persist the
> entity a second time
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