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https://issues.apache.org/jira/browse/OPENJPA-1778?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Albert Lee closed OPENJPA-1778.
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Close issue in preparation for 2.2.0 release.
> Improved error information for unenhanced classes.
> ---------------------------------------------------
>
> Key: OPENJPA-1778
> URL: https://issues.apache.org/jira/browse/OPENJPA-1778
> Project: OpenJPA
> Issue Type: Improvement
> Components: Enhance, jpa
> Affects Versions: 2.0.0
> Reporter: Rick McGuire
> Assignee: Rick Curtis
> Priority: Minor
> Fix For: 2.1.1, 2.2.0
>
>
> The exception message issued by openjpa 2.0 for the use of an unenhanced
> class is not as useful as the message issued by the 1.x versions. In 2.0,
> the following message is received:
> <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
> While the same application run using openjpa 1.x gives this message:
> <openjpa-1.2.1-r752877:753278 fatal user error>
> org.apache.openjpa.persistence.ArgumentException: No metadata was found for
> type "class org.apache.sample.entities.Book". The class does not appear in
> the list of persistent types: [org.apache.geronimo.sample.entities.Book].
> The 2.0 message no longer points to the persistence.xml definition as the
> potential source of error. It should give some possible solutions to "Ensure
> that is has been enhanced". Perhaps something like "Ensure that the class is
> included in the list of persistent types or enhanced as part of the
> application build".
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