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From Andrus Adamchik <and...@objectstyle.org>
Subject Re: Cayenne Modeler Inheritance Warning
Date Fri, 09 Jun 2017 05:48:45 GMT
Does Facility.exhibit point to a sublcass of Exhibit?

Some background:

https://issues.apache.org/jira/browse/CAY-1600
https://lists.apache.org/thread.html/01f69b73b99651f6ecf96fc24176b0e2d4f63d5af08e2f764e6f12bf@1332798063@%3Cuser.cayenne.apache.org%3E

Andrus


> On Jun 8, 2017, at 6:30 PM, Michael Gentry <blacknext@gmail.com> wrote:
> 
> In converting an application from 3.0 to 3.1, have a validation warning in
> CM regarding a "Facility" abstract superclass which defines an "exhibit"
> relationship which is used by the subclasses.  The warning is:
> 
> Usage of super entity's relationships 'Facility.exhibit' as reversed
> relationships for sub entity is discouraged
> 
> The concrete subclasses have qualifiers similar to:
> 
> exhibit.itemExhibit.code = "foo"
> 
> They all utilize the "exhibit" relationship defined in the superclass to
> identify the correct subclass.  Why is inheriting and using an abstract
> superclass relationship a warning and discouraged, but inheriting and using
> the abstract superclass attributes are OK and no warning?  I could, of
> course, re-define these relationships in each subclass, but I'm wondering
> why this warning is in place and if I'm overlooking something.
> 
> Thanks,
> 
> mrg


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