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From: "Howard M. Lewis Ship" <hlship@comcast.net>
To: "'Jakarta Commons Developers List'" <commons-dev@jakarta.apache.org>
Subject: RE: [HiveMind] Initializable
Date: Thu, 9 Oct 2003 13:45:32 -0400
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> 
> I would strongly encourage using the proxy. For my taste a 
> Service should 
> nearly never give out this. That's because in my mind a 
> Service is not just 
> the implementation but the implementation plus the Interceptors (and 
> ServiceModel proxies) and the implementation does not know 
> about the other. 
> Think of an interceptor which never calls the actual Service 
> but has some 
> replacement etc.

I agree, which means nothing needs to be passed; if the core implementation needs to vend out the
proxy, it can use the BuilderFactory to assign the proxy to a property.  Perhaps another attribute
of <contruct> to specify which property it should be assigned to.

> 
> Concerning Threaded model: I'd rather see if 
> ServiceImplementations which 
> can be used for Threaded must implement a marker interface (as in old 
> Servlet-spec). There are just too many implementation 
> differences between 
> the Singleton and the Threaded. HiveMind should than check that such 
> Threaded marked ServiceImpl is never used as Singleton and 
> vice-versa. 

I think that's an interesting idea; threaded core impls must implement a Threadable marker
interface; pooled implementations must implement a Poolable interface.

Hm.  Marker interfaces as a precurser to JD 1.5 code attributes.

--
Howard M. Lewis Ship
Creator, Tapestry: Java Web Components
http://jakarta.apache.org/tapestry
http://jakarta.apache.org/commons/sandbox/hivemind/
http://javatapestry.blogspot.com


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