[Zope-dev] Re: proxies

[Chris Withers]

Philipp von Weitershausen wrote:
>> - can these proxies be used to keep track of a traversal path in much 
>> the same way (although no seperate containment and context chains 
>> needed) as the old Zope 2 acquisition wrappers did?
> 
> We generally assign a __parent__ attribute to objects that have a 
> hierarchical parent object. 

Okay, but I'm talking about a context-based chain, ie: keeping track of 
what objects were traversed through to obtain the current object.
Traversed here does *not* mean Zope 3 url traversal which si why I'm 
looking for something akin to Zope 2's acquisition wrappers, but without 
the weird containment/context dual wrapping.

>> - once a proxy has been created, the the object it's proxying for be 
>> replaced?
> 
> I don't understand this question.

 >>> x = proxy(y)
 >>> a.x = x
 >>> b.x = x

I now want to do something like:

 >>> x.replace(y,z)

...so a and b will still keep their references, but the object being 
proxied for has been changed.

cheers,

Chris

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