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https://issues.apache.org/jira/browse/GERONIMO-5553?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12902980#action_12902980
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Donald Woods commented on GERONIMO-5553:
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I decompiled your org.apache.sample.entities.Book.class and did not see that it
had been enhanced.
In OpenJPA 2.0, we have turned RuntimeUnenhancedClasses off/unsupported by
default (it was enabled in 1.0 and 1.2) -
http://openjpa.apache.org/builds/2.0.0/apache-openjpa-2.0.0/docs/manual/manual.html#openjpa.RuntimeUnenhancedClasses
To enable runtime enhancement (which we strongly discourage for production
applications), you need to update your persistence.xml to set the following
property -
<properties>
<property name="openjpa.RuntimeUnenhancedClasses" value="supported"/>
. . .
</properties>
The better solution, is to use build time enhancement, which can be done via
ANT, Maven plugin or Eclipse plugin -
http://openjpa.apache.org/entity-enhancement.html
> 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
> 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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