Re: [OJB-developers] extents and class hierarchy

[Thomas M. <tho...@ho...>]

Hi Jakob,

Jakob Braeuchi wrote:

> hi ,
> 
> while working on a test case for ProductGroup i found that the ProductGroup
> only contains articles of classes Article and BokArticle although an query
> is successfully executed for CdArticle .
> in the repository CdArticle is defined as an extent of Article but it does
> not inherit from it, but CdArticle implements InterfaceArticele.
> 
> PersistenceBrokerImpl#getCollectionByQuery() does not accept CdArticle for
> Article:
> 
> // only add candidates with matching class
> if (itemClass.isAssignableFrom(candidateClass))
> {
> tmpMap.add(candidate);
> }
> 
> i now have two questions:
> 1) is it acceptable to have an extent definition that does not match the
> class hierarchy ?


I once build it this way out of fancy. I found it a cool feature. But I 
don't think that it is useful at all. It also may confuse people. So the 
best thing will be to drop it.


> 2) shouldn't the above check be made based on the interface ?


ACK!

cu,

Thomas


> 
> jakob
> 
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