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https://issues.apache.org/jira/browse/GERONIMO-5553?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12903006#action_12903006
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Kevan Miller commented on GERONIMO-5553:
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jpa.jar didn't contain any classes. Instead, MANIFEST.MF pointed to
lib/geronimo-transformer-2.1.6.jar
So, I believe same basic structure is used in 2.x and 3.0. The OpenJPA
javaagent still needs to get registered with the TransformerAgent. That may not
be working properly in 3.0. Or there's some more fundamental issue...
> Fail to enchance entities on Geronimo
> -------------------------------------
>
> Key: GERONIMO-5553
> URL: https://issues.apache.org/jira/browse/GERONIMO-5553
> Project: Geronimo
> Issue Type: Bug
> Security Level: public(Regular issues)
> Components: persistence
> Affects Versions: 3.0
> Environment: OS:win xp
> Geronimo :3.0 20100824 build
> Reporter: Lu Jiang
> Assignee: Rick McGuire
> Fix For: 3.0
>
> Attachments: booknew.war
>
>
> I tried to deploy a simple jpa sample on geronimo.But when persist data into
> database.
> Following exception will occur.
> <openjpa-2.0.0-r422266:935683 nonfatal user error>
> org.apache.openjpa.persistence.ArgumentException: Attempt to cast instance
> "org.apache.sample.entities.b...@97781f" to PersistenceCapable failed.
> Ensure that it has been enhanced.
> FailedObject: org.apache.sample.entities.b...@97781f
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