Enhancer fails when using OneToMany.mappedBy on bidi one-to-many relationship
when using interface references on many side
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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
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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