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From "Pinaki Poddar (JIRA)" <j...@apache.org>
Subject [jira] [Created] (OPENJPA-2305) Canonical MetaModel class generation should not use inhertence
Date Tue, 11 Dec 2012 18:21:21 GMT
Pinaki Poddar created OPENJPA-2305:
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             Summary: 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: 2.2.1.1


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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