[Zope3-dev] Backward-incompatible bug fix to zope.proxy

[Roger Ineichen]

Jim Fulton schrieb:
[...]
>> Hi Jim,
>>
>> We just use a IContainer location proxy adapter.
>> But since this adapter isn't persistent I don't think this
>> is a problem.
>>
>> def proxify(container, item):
>>     if IContainer.providedBy(item):
>>         proxy = ContainerLocationProxy(item)
>>     else:
>>         proxy = LocationProxy(item)
>>     proxy.__name__ = item.__name__
>>     proxy.__parent__ = container
>>     return proxy
>>
>> class ContainerLocationProxy(LocationProxy):
>>     """Proxy the location of a container an its items."""
>>
>>     # zope.app.conatiner.interfaces.IReadContainer
>>     def __getitem__(self, key):
>>         return proxify(self, getProxiedObject(self).__getitem__(key))
>>
>>     ...
> 
> Well, with the fix, your __getitem__ won't be called. Is that a
> problem? ;)
> 
> You will need to use the @non_overridable decorator on your __getitem__
> function.

If I understand this correctly, then we only have to update the methods 
with decorators? If so, this will be fine for me.

> Jim
> 

-- 
Regards
Roger Ineichen
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