Roland Szabó created CAY-2704:
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Summary: Vertical inheritance with Embeddedables looses
ObjAttribute information
Key: CAY-2704
URL: https://issues.apache.org/jira/browse/CAY-2704
Project: Cayenne
Issue Type: Bug
Components: Core Library
Affects Versions: 4.2.M3
Reporter: Roland Szabó
I tried to implement a simple vertical inheritance with two object entities.
The super entity has an Embeddable as one of its object attribute with no
attribute overrides.
I noticed the problem when trying to #validateForSave in the child entity. The
ObjEntity#getAttributes call collect all the attributes, and also consults the
super entity, but in ObjEntity#appendAttributes it creates a copy of the
attribute descriptor. When doing this, it creates a uniform ObjAttribute,
independent of the original type (eg. EmbeddedAttribute).
Later, the validation method makes an exception for embedded attributes, but in
my case, this exception does not get triggered and results in a
CayenneRuntimeException thrown because the "ObjAttribute does not have a
corresponding DbAttribute".
I also get this error in the Modeler, and this seems for me a bug.
Also, I'm using 4.2.M2, but there is no such version here in Jira... :)
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