[webbeans-dev] Re: Bean.getInjectionPoints()

[Gurkan Erdogdu]

Just my comment:

For adding the new API for this complicates the specification.
I think, specification provides the necessary API related with Bean creation. As I said, these concerns are left to the implementations.

Gurkan




________________________________
From: Gavin King <gavin at hibernate.org>
To: Scott Ferguson <ferg at caucho.com>
Cc: Michael Keith <michael.keith at oracle.com>; WebBeans <webbeans-dev at lists.jboss.org>; Java Community Process JSR #299 Expert List <JSR-299-EG at jcp.org>
Sent: Friday, January 2, 2009 7:19:20 AM
Subject: Re: [webbeans-dev] Re: Bean.getInjectionPoints()

On Fri, Jan 2, 2009 at 3:42 PM, Gavin King <gavin at hibernate.org> wrote:

> Actually I think there is a better way to solve the problem, but I
> need to talk it over with Pete.

The alternate solution is something like:

   interface CreationalContext {
       void add(Bean<X> bean, X instance); //registers an "incomplete" instance
   }

   interface Contextual<T> {
       public abstract T create(CreationalContext ctx);
       ...
   }

   interface Context {
       public <T> T get(Contextual<T> bean); //get any existing instance
       public <T> T get(Contextual<T> bean, CreationalContext ctx);
//get or create an instance

       public Class<? extends Annotation> getScopeType();
       boolean isActive();
   }

   interface Manager {
       Object getInstanceToInject(CreationalContext ctx,
InjectionPoint ij, Type type, Annotation... bindings);
       ...
   }

And getInstanceToInject() would be smart enough to return any object
that had already been registered with the CreationalContext.

Note that this solution addresses the problem of circular references,
and also fixes a hole in how the Manager knows about the
InjectionPoint.

-- 
Gavin King
gavin.king at gmail.com
http://in.relation.to/Bloggers/Gavin
http://hibernate.org
http://seamframework.org
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