[TransWarp] New interfaces

[Oleg Broytmann]

On Wed, May 14, 2003 at 01:12:46PM -0400, Phillip J. Eby wrote:
> At 06:33 PM 5/14/03 +0400, Oleg Broytmann wrote:
> >     if _factory.__dict__.has_key("__implements__"):
> >         _provides = _factory.__implements__
> >
> >   How can I do this now?
> 
> You don't.  We're specifically deprecating interface introspection.  Use 
> adaptation instead.  In other words, every place in PEAK where we used to 
> do this:
> 
> if IFoo.isImplementedBy(ob):
>     spamFoo(ob)
> elif IBar.isImplementedBy(ob):
>     spamBar(ob)
> ...
> 
> We now do this:
> 
> adapt(ob,ISpam).spam()
[skip]
> If you have code that accesses __implements__ in order to examine an 
> object's interfaces as metadata

   No, I did it to register the object as a provider:

                    if _factory.__dict__.has_key("__implements__"):
                        _provides = _factory.__implements__
[skip]
            # if the component provides something, register provider
            if _provides:
                self.__class_provides__.register(_provides, _cname)

   Now confg.findUtility() can find the object by its interface. How should I
register providers now?

Oleg.
-- 
     Oleg Broytmann            http://phd.pp.ru/            phd at phd.pp.ru
           Programmers don't die, they just GOSUB without RETURN.