Aggregation on _DataObjects_ works only for 1-1 relationship.
For 1-n, you may want to look at _ValueObject_ (only in cvs and not
fully tested).  It is a kind of _DataObject_ but more sophiticated.  We
introduced there  1-n relationships (as well as multiple VO per entity
bean with bean's attributes matching facility, aggregation/composition,
...)  Have a look if you want.  I'll appreciate feedback :)

Vincent

--- [EMAIL PROTECTED] wrote:
> Hi,
>  
> I'm also interested in knowing more about this. From what I
> understand is
> you can put an ejb:aggregate task in the javadocs for a method: eg.
> for
> public abstract Collection getAddresses() in a person entity bean and
> then I
> would get a method in my person value object as follows: public void
> setAddresses(Collection addresses) and public Collection
> getAddresses().
>  
> If I include ejb:aggregate as such I get the following error:
>  
> [ejbdoclet] Running XDoclet failed:
> [ejbdoclet] <<The bean implementation class for interface
> 'java.util.Collection'
>  not found!>>
> [ejbdoclet] 1 error
> [ejbdoclet] 100 warnings
> [ejbdoclet] javadoc: In doclet class xdoclet.DocletTask$DocletMain, 
> method
> star
> t has thrown an exception java.lang.reflect.InvocationTargetException
>  
> BUILD FAILED
>  
> What is wrong here?
>  
> Thanks :)
> Bernie
> 
> -----Urspr�ngliche Nachricht-----
> Von: Steve Knight [mailto:[EMAIL PROTECTED]]
> Gesendet: Samstag, 23. Februar 2002 19:15
> An: [EMAIL PROTECTED]
> Betreff: [Xdoclet-user] Aggregate DataObjects
> 
> 
> Hello,
> Can someone please explain how to use XDoclet to make Aggregate
> DataObjects.
> I realize there is a ejb:aggregate tag, but I'm not sure how to use
> it
> properly.  And what gets generated?
>  
> Thanks,
>  
> Steve
>  
>  
> 
> 


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