[Zope3-dev] UniqueIdUtility question

[Jim Fulton]

Jim Fulton wrote:
> Dominik Huber wrote:
> 
>> If nested objects are deleted, only the most parental
>> deletion is notified by a IObjectRemovedEvent.
> 
> 
> Wrong.
> 
>> Therefore only the most parental is deregistered from the
>> UniqueIdUtility.
>> Its sub-objects are orphans and still registered. Bug or feature?
> 
> 
> Bug.  The unique id utility's subscribers aren't set up to get the
> proper notifications.  Unfortunately, the uniqueid utility also defines
> an event framework for notifying catalogs that reflects a lack of
> understanding of how location events are handled. (I'm sure that
> this missunderstanding is widespread.)
> 
> When a location relevent event is dispatched for an object, it is
> redispatched to the object and each of it's subobjects. A subscriber that
> wants to be called for objects and subsobjects should be of the form:
> 
> def foo(ob, event):
>    ....
> 
> and should be registered for ILocation and the event type.
> The first argument will be different than the second argument's
> 'object' attribute if first argument is a subobject.
> 
> I'll fix this.

Done.

Dominik,

Please back out your change.

Jim

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