[Zope-dev] ObjectManagers and their children

[Toby Dickenson]

> -----Original Message-----
> From: gtk [mailto:gtk@well.com]
> Subject: [Zope-dev] Pointer-to-Object Properties, 
> ObjectManagers and Z2 Conflicts
> 
> Oh, wierd! I just figured out why it's so hard to untangle 
> the relationship
> between ObjectManagers and their children. The children are stored as
> attributes of the ObjectManager itself, NOT in a dict. This 
> makes some sense
> from an acquisition point of view, but probably means that 
> there are a whole
> bunch of "reserved ids" like manage_beforeDelete.
> 
>     Error Type: Bad Request
>     Error Value: The id manage_beforeDelete is invalid - it 
> is already in
> use.

I also feel a little worried that a future version of a class
might add a class attribute which clashes with a pre-existing
instance attribute added by the user.

The protection you describe won't help if the attribute is added
in an earlier version, before that class attribute was added.

Has anyone else explored this potential problem?