[jira] Updated: (OPENJPA-1361) Enhancer fails when using OneToMany.mappedBy on bidi one-to-many relationship when using interface references on many side

["Matthew T. Adams (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/OPENJPA-1361?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

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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