[Zope-dev] ZPatterns: External Attribute Provider question

[Phillip J. Eby]

At 07:48 PM 3/11/01 +0000, Steve Alexander wrote:
>
>Is there a good reason that ExternalAttributeProvider sets up a 
>dictionary to put its attributes into, rather than a PersistentMapping?

It's mainly to avoid a proliferation of persistent objects, based on the
assumption that if you're using a PEAP, you probably don't have that much
else in the PersistentMapping.


>If an External Attribute Provider instead set up a new PersistentMapping 
>in its slot, only that PersistentMapping would change in the ZODB on 
>updates.
>
>Do you think this is a reasonable change for the External Attribute 
>Provider class? Or, should I write my own provider, derived from 
>External Attribute Provider, that uses a PersistentMapping instead of a 
>dict?

I would suggest creating your own provider(s).