[ZODB-Dev] StandaloneZODB future plans

[Jeremy Hylton]

>>>>> "TD" == Toby Dickenson <tdickenson@geminidataloggers.com> writes:

  TD> On Friday 07 Jun 2002 5:23 pm, Jeremy Hylton wrote:
  >> I imagine that users will be able to install ZODB 3.0 on top of
  >> an existing Zope version and upgrade just the ZODB core.  I think
  >> this will be useful for people who want some core improvements
  >> without worrying about a full upgrade.

  TD> I dont think it is that easy. The new cache changes the layout
  TD> of the Persistent C struct header, and Zope has some persistent
  TD> C classes that are not part of (Standalone-)ZODB.

Which C classes?  I wasn't aware of any Python extension types that
rely on cPersistence except BTrees.

IIRC, we did upgrade an internal Zope Corp. using this approach and
didn't discover any problems.

Jeremy