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https://issues.apache.org/jira/browse/OPENJPA-207?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Pinaki Poddar resolved OPENJPA-207.
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Resolution: Fixed
Fix Version/s: 2.0.0
> failure when composite ID has another composite ID as a field
> --------------------------------------------------------------
>
> Key: OPENJPA-207
> URL: https://issues.apache.org/jira/browse/OPENJPA-207
> Project: OpenJPA
> Issue Type: Bug
> Affects Versions: 0.9.6
> Environment: derby
> jdk 1.5.0_07
> Reporter: Jeffrey Blattman
> Assignee: Pinaki Poddar
> Fix For: 2.0.0
>
> Attachments: book.zip
>
>
> see attached test case: entities Library, Book, and Page. there is a one-many
> bidirectional relationship between Library and Book, and Book and Page. a
> Library's ID is simply it's name. a Book's ID is it's name, plus it's owning
> library's ID. A Page's ID is it's number, plus it's owning Book's ID.
> this arrangement results in composite IDs for Book and Page. and moreover,
> Page's composite ID, PageId, contains a page number field plus a BookId.
> however, this arrangement results in an exception at runtime w/ the included
> test case ...
> ...
> Caused by: java.lang.ClassCastException: org.apache.openjpa.util.ObjectId
> at com.mycompany.book.Page.pcCopyKeyFieldsToObjectId(Page.java)
> at org.apache.openjpa.util.ApplicationIds.create(ApplicationIds.java:383)
> at org.apache.openjpa.kernel.BrokerImpl.persist(BrokerImpl.java:2349)
> note that if i remove the bookId field from PageId, the test case succeeds.
> also note that this problem is also observed against a trunk field from march
> 3 (0.9.7 snapshot).
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