From: Trans <transfire@...>
Date: 2005-10-25T05:47:02+09:00
Subject: Re: Cut-based AOP


Christian Neukirchen wrote:
> "Trans" <transfire@gmail.com> writes:
>
> > itsme213@hotmail.com wrote:
> >> Does this also provide a quite general form of dependency injection,
> >> very different in nature and weight compared to something like Needle?
> >
> > Had to give this some thought. Mu immediate conjecture is that it must
> > since DI and AOP are closely related. But I'm no DI expert like Jim
> > Weirich. But in giving it some conosideration, I imagine there's not
> > much more to it than:
> >
> >   class App
> >
> >     def logger
> >       nil  # no logger available
> >     end
> >
> >   end
> >
> >   cut AppContainer < App
> >
> >     def logger
> >       Logger.new
> >     end
> >
> >   end
>
> Which will make you want "multiple-inheritance" for cutpoints. :-)

I thought about this some but I don't understand what you mean. How ill
it make you want MI? Aren't mixins enough?

> It's not that trivial, but it certainly can be used to implement DI.

I realize that it's a trivialized rendition, but could you provided
some pointers on improving?
 
Thanks,
T.