[jboss-user] [EJB 3.0 Development] New message: "Re: Proxy SPI"

[jaikiran pai]

User development,

A new message was posted in the thread "Proxy SPI":

http://community.jboss.org/message/526048#526048

Author  : jaikiran pai
Profile : http://community.jboss.org/people/jaikiran

Message:
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> jaikiran wrote:
>  
> Based on our discussion yesterday about a need for a proxy-spi, here's what my initial thoughts are. The following SPI keeps in mind both nointerface view (which uses Javassist) and the other business view (which use j.l.r.Proxy).
>  
> My initial thoughts around this were, to have a ProxyFactory which at the minimum has this:
>  
> *public* *interface* ProxyFactory
> {
>  
>   /**
>    * Creates a proxy which is castable to the interfaces passed and associates
>    * the passed invocationHanlder with the proxy
>    */
>    Object createProxy(Class[] interfaces, InvocationHandler invocationHandler);
>    ...
>    
> }
> 
> 
>  
> 
> With this, we could then have had a JavaReflectProxyFactory which would return Proxy.newInstance(...) and a JavassistProxyFactory which would do its own proxy creation logic. Note that currently the Javassist proxy factory for nointerface view uses a j.l.r.InvocationHandler, but that's a implementation detail, and as such should not be exposed through the SPI. i.e. the createProxy shouldn't ideally be expecting a j.l.r.InvocationHandler as a param.
After discussing this with Carlo over IRC, i realize that expecting InvocationHandler isn't a bad deal after all. Infact the above SPI looks much simpler and better compared to what i came up with, in the rest of my previous post.

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