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https://issues.apache.org/jira/browse/OPENJPA-1361?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Matthew T. Adams updated OPENJPA-1361:
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Attachment: case-sandbox.zip
Test case.
> Enhancer fails when using OneToMany.mappedBy on bidi one-to-many relationship
> when using interface references on many side
> --------------------------------------------------------------------------------------------------------------------------
>
> Key: OPENJPA-1361
> URL: https://issues.apache.org/jira/browse/OPENJPA-1361
> Project: OpenJPA
> Issue Type: Bug
> Affects Versions: 1.2.1
> Reporter: Matthew T. Adams
> Attachments: case-sandbox.zip
>
>
> Synopsis: bidirectional one-to-many relationship where the one side
> references the objects on the many side using a concrete class reference and
> the many side references the object on the one side using an interface
> reference. When specifying the mappedBy property of the @OneToMany
> annotation, the OpenJPA enhancer throws the error:
> Collection field "example.model.Concrete.pebbles" declares that it is mapped
> by "example.model.Pebble.buildingMaterial", but this is not a valid inverse
> relation.
> When I remove the mappedBy property, everything works fine, except that
> OpenJPA creates an extra join table (Concrete_Pebble) where it shouldn't,
> IMHO. I have two questions, an answer to either one of which will suffice:
> 1. Why can't I use mappedBy in this scenario?
> 2. How do I annotate things with @JoinColumn or similar that will allow me to
> not have a join table and only the reference from Pebble back to its
> BuildingMaterial?
> I'll attach test case next.
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