[Zope] Changing Contexts (Was: [Zope] Acquisition? Did I just lose my Zen?)

[Jay R. Ashworth]

On Thu, Sep 30, 1999 at 02:29:43AM +0100, Toby Dickenson wrote:
> >> Paulo Eduardo Neves wrote:
> >> > "Jay R. Ashworth" wrote:
> >> > > Got it.  Then, I agree with the other folks.  How can you override the
> >> > > context of the place where you acquired it _from_ with the context of
> >> > > the place where you acquired it _to_?  That would seem to be a very
> >> > > important ability...
> 
> I had been working with Zope for six months before realising that
> acquisition did not work that way already, and I was relieved. Maybe I
> can persuade you that it would be a bad thing.....
> 
> With the rules as they are, an object can always rely on acquisition
> to source its containers first. Think of an object's containers as
> part of it's implementation, and the rules feel right.
> 
> Under the rules suggested by Martjin, acquisition would source
> attributes from an object's customers in preference to its containers
> (As Jay wrote, the place where you acquired it _to_, rather than the
> place where you acquired it _from_). I don't think you could use that
> kind of acquistion to build a robust application, because of the
> unbounded number of potential clients each object might encounter.

Ok, now I'm really confused.

Acquisition differs from inheritance precisely _because_ what the
acquirer "acquires" things from depends on where you _use_ it, rather
than where you _created_ it, no?

I think it's time for ASCII art.

Cheers,
-- jra
-- 
Jay R. Ashworth                                                jra@baylink.com
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