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From "Armin Waibel (JIRA)" <j...@apache.org>
Subject [jira] Created: (OJB-82) Declare 'extent' which is not a subclass or implements interface
Date Fri, 16 Dec 2005 01:53:48 GMT
Declare 'extent' which is not a subclass or implements interface

         Key: OJB-82
         URL: http://issues.apache.org/jira/browse/OJB-82
     Project: OJB
        Type: Bug
  Components: ODMG-API, PB-API  
    Versions: 1.0.3    
    Reporter: Armin Waibel

In documentation section 'Extents' the following feature is listed
Why is it necessary to explicitely declare which classes implement an interface and which
classes are derived from a baseclass?
In other cases it may be neccessary to treat certain classes as implementors of an interface
or as derived from a base even if they are not.
As an example, you will find that the ClassDescriptor for class org.apache.ojb.broker.Article
in the repository.xml contains an entry declaring class CdArticle as a derived class:

Currently this doesn't work because of a workaround in QueryReferenceBroker#getCollectionByQuery
which is used to filter out 'wrong' objects returned by queries including a "table per class
hierarchy" (using ojbConcreteClass column).

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