[Zope-dev] Re: Converting from old-style BTreess

[Chris McDonough]

On Mon, 2003-12-15 at 02:47, Jim Fulton wrote:
> Chris McDonough wrote:
> ...
> 
> > Out of curiosity, could you explain why it matters in this context
> > whether it's an extensionclass or not?  Is it because there might be a
> > set of people using PersistentMapping objects for whom its important
> > that they be able to use extenionclass semantics against them?  I'd just
> > never thought of using __of__ or inheritedAttribute or any of the other
> > EC-specific stuff on a PersistentMapping.
> 
> <shrug>  Who knows. I'd rather be safe.  It's not that hard.
> In any case, we would have needed the fix to handle old pickles
> correctly.

Gotcha.

Can you answer a question about the features we're allowed now?  If we
don't use extensionclass, is it possible to persist instances of
new-style classes in ZODB now (ie. is persistent.Persistent really a
new-style type/class)?

- C