[Zope] problem migrating ZClasses from Zope 2.6.1 to Zope 2.9.8

[Jens Vagelpohl]

On Mar 26, 2008, at 12:59 , Allen Schmidt Sr. wrote:
> That sounds so easy. We have one ZClass but it is the basis of  
> almost our entire newspaper website. The news ZClass was built in  
> 2000 and put into production when we went live on Zope in Feb 2001  
> (just before the guys at Zope Corp said that ZClasss were bad). Over  
> 7 full years of daily news as ZClass objects. We are in the same  
> boat as we want to move from 2.7.5 to a later version. We could  
> switch to SQL articles but then we would have to make sure all the  
> old URLs still functioned as our content is all over the search  
> engines...and convert everywhere there are tools to manage story  
> creation, importing, editing, etc. Yuck. We could just make the  
> cutover one day and just keep an instance running for the old stuff  
> and all new stuff runs from SQL.

When you build a "real" Zope product to replace the ZClasses it is no  
problem to make it behave like the old instances and put them in the  
same place as the old instance so the URL remains the same. Switching  
away from ZClasses does not mean you must change instance URLs etc.

jens