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https://issues.apache.org/jira/browse/OPENJPA-2305?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13643480#comment-13643480
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ASF subversion and git services commented on OPENJPA-2305:
----------------------------------------------------------
Commit 1476467 from hthomann
[ https://svn.apache.org/r1476467 ]
OPENJPA-2305: Canonical MetaModel class generation should not use inhertence -
back-ported to 2.2.x Pinaki Poddar's commit to trunk.
> Canonical MetaModel class generation should not use inhertence
> --------------------------------------------------------------
>
> Key: OPENJPA-2305
> URL: https://issues.apache.org/jira/browse/OPENJPA-2305
> Project: OpenJPA
> Issue Type: Bug
> Components: criteria
> Affects Versions: 2.2.1.1
> Reporter: Pinaki Poddar
> Assignee: Pinaki Poddar
> Fix For: 2.3.0, 2.2.1.1
>
>
> The generated source code for canonical metamodel classes mirrored the same
> inheritance hierarchy of the domain classes. This strategy exposed an error
> that resulted in wrong target SQL query under the following domain model
> a) A @MappedSuperClass M defined a primary key field x
> b) The primary key field x is an @EmbeddedId E
> c) An @Entity class D derived from M and navigated to the fields of E via x
> The solution is to generate canonical class D_.java as a flattened structure
> instead of inheriting from M_.java (as is done currently).
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