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On 14 Feb 2007, at 22:18, Geoff Gerrietts wrote:
1. Last time I talked to anyone from Zope Corp, the plan was to
quiesce Zope 2 in favor of Zope 3. At that time, I think I remember
people saying 2.9 would be the last in the Zope 2 series. Now
there's a 2.10, so clearly it wasn't. How long does a business like
mine have before there is no clear upgrade path in the Zope 2
series? Is 2.10 now the final Zope 2 release, or will there be a
2.11 and 2.12?
Zope Corp ceased to be a determining factor in Zope's future a long
time ago. You should ask developers and Jim Fulton in his capacity as
the Zope czar, not some company.
2. Whenever someone asks about moving an existing application from
Zope 2 to Zope 3, there's a round of flip "oh you'll hafta start
over" responses. I understand that the two architectures are
fundamentally different, and that I'll need to rebuild my object
database, etcetera. Am I also correct in believing that all
products must be completely rewritten, and that DTML is no longer a
supported templating language? Has the users/roles/permissions
security structure disappeared or been supplanted? I am trying to
ascertain at a glance how much we will need to rebuild for
ourselves; if it's enough then the problems we have had with Zope
(poor scaling, poor integration with source control) may outweigh
the advantages of remaining on the platform.
You must rewrite your application. DTML still exists, but ZPT is
encouraged. The upgrade path is made less "catastrophic" by the fact
that you can already integrate more and more Zope 3 technologies into
your Zope 2 product now. Zope 2 does not have any defined "end of
life", but you can make your application more future-proof by getting
acquanted with those Zope 3 bits that are usable from within Zope 2
today.
jens
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