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From "Donald Woods (JIRA)" <j...@apache.org>
Subject [jira] Commented: (GERONIMO-5553) Fail to enchance entities on Geronimo
Date Thu, 26 Aug 2010 18:50:53 GMT

    [ https://issues.apache.org/jira/browse/GERONIMO-5553?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12902980#action_12902980
] 

Donald Woods commented on GERONIMO-5553:
----------------------------------------

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.Book@97781f" to PersistenceCapable failed.
 Ensure that it has been enhanced.
> FailedObject: org.apache.sample.entities.Book@97781f

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