[webbeans-dev] Re: Patterns of reuse

[Ted Stockwell]

How embarassing, the first time I send a message to this list I accidently send it before I was done writing, sorry....
---------------
 
I would maybe call the third case a 'subBean".
 
I have also run into a problem regarding decorators of 'subBeans'.
The problem is that if I create a decorator of a subBean then I currently have no way of calling methods in the 'superBean'.
 
I imagine that the spec may have to be extended with a DI annotation like @SuperBean (@SuperBean like the @Decorates annotation only it is set to a reference that delegates calls to the superBean instead of the the next method in the current stack of interceptors for the subBean).
@SuperBean would be used somelike this this...
 
public interface BaseType {
    public String getDescription();
}
public class SubType extends BaseType {
}
@Decorator public BaseTypeImpl implements BaseType {
     public String getDescription() { return "BaseType"; }
}

@Decorator public SubTypeImpl implements SubType {
     @SuperBean superBean;
     public String getDescription() { return superBean.getDescription()+":SubType";
}
 
So, the following expressions should be true...
 
Bean baseTypeBean= ....;
Bean superTypeBean= ....
 
baseTypeBean.create().getDescription().equals("BaseType");
superTypeBean.create().getDescription().equals("BaseType:SubType");
 
  
 

--- On Thu, 11/27/08, Gavin King <gavin at hibernate.org> wrote:

From: Gavin King <gavin at hibernate.org>
Subject: [webbeans-dev] Re: Patterns of reuse
To: "Java Community Process JSR #299 Expert List" <JSR-299-EG at jcp.org>, "Matt Drees" <matt.drees at gmail.com>, "Scott Ferguson" <ferg at caucho.com>, "webbeans-dev at lists.jboss.org" <webbeans-dev at lists.jboss.org>
Date: Thursday, November 27, 2008, 4:34 PM

On Thu, Nov 27, 2008 at 4:09 PM, Gavin King <gavin at hibernate.org> wrote:

> In case 1, it doesn't really make sense to inherit any web beans
> metadata to the subtype. In cases 2 and 3, it makes sense to inherit
> everything that is not explicitly overridden.

Minor clarification: in case 3, it does not make sense to inherit
binding types - rather, the user should be forced to *explicitly*
redeclare the binding types.

In case 2, binding types are inherited.



-- 
Gavin King
gavin.king at gmail.com
http://in.relation.to/Bloggers/Gavin
http://hibernate.org
http://seamframework.org
_______________________________________________
webbeans-dev mailing list
webbeans-dev at lists.jboss.org
https://lists.jboss.org/mailman/listinfo/webbeans-dev



      
-------------- next part --------------
An HTML attachment was scrubbed...
URL: http://lists.jboss.org/pipermail/weld-dev/attachments/20081128/c0f7dddb/attachment.html