[Zope3-Users] Re: Utility Local to an Annotation?

[Derek Richardson]

Derek Richardson wrote:
> Derek Richardson wrote:
>> Benji York wrote:
>>> Derek Richardson wrote:
>>>> The specific case is uuids for atom feed entries. We have 
>>>> annotations representing feeds and I would like my uuid utility to 
>>>> be local to the feed annotation, thus recording and making available 
>>>> uuids only for entries in that feed.
>>>
>>> How about a multi-adapter from content and feed to UUID?
>>
>> Hmmm, to do that I have to be able to annotate an annotation, right? 
>> As the feed is an annotation and that is where I want to store the 
>> UUIDs. I tried this tonight and was unable to make it work - I got the 
>> following:
>>
>> blah, blah, blah
>>   File 
>> "/Users/dkr/Zope-3.3.1/build/lib.darwin-8.8.1-i386-2.4/zope/security/adapter.py", 
>> line 84, in __call__
>>     adapter = self.factory(*args)
>>   File 
>> "/Users/dkr/Zope-3.3.1/build/lib.darwin-8.8.1-i386-2.4/zope/annotation/factory.py", 
>> line 38, in getAnnotation
>>     annotations = IAnnotations(context)
>> TypeError: ('Could not adapt', 
>> <plone.syndication.syndication.Syndication object at 0x3741530>, 
>> <InterfaceClass zope.annotation.interfaces.IAnnotations>)
> 
> I've made it further and am now getting a TraversalError. It seems the 
> cause is that the annotation lacks __parent__, so I can't adapt it to 
> IAnnotations using:
> 
> zope.app.keyreference.persistent.connectionOfPersistent
> 
> Any ideas about how I can give a __parent__ to an annotation?

Debugging error. Please disregard.

Sorry,

Derek