[Zope3-dev] Re: Zope 3 as a reliable platform?!?

[Martijn Faassen]

Martijn Faassen wrote:
> Chris Withers wrote:
>> Lennart Regebro wrote:
>>> I agree. And as long as you move from one version to the next, it's
>>> not a problems, since we have BBB-code. 
>>
>> I'm sorry, I don't buy this. BBB code goes away, that means you have 
>> to deal with the churn at some point. It's the churn that's the 
>> problem...
> 
> Just to give some real data on this from someone who actually spent time 
> updating applications: the churn is there, but it's like this causes 
> absolutely massive amounts of work, and the deprecation warnings are 
> usually pretty helpful.

I meant to write "it's *not* like this causes absolutely massive amounts 
of work".

That said, in my case I didn't have to worry about upgrading content 
very much. Upgrading a ZODB is probably the most painful of it all - 
this is what Christian Theune seems to refer to with his reply 
mentioning generations.

Upgrading content is also the most painful part of any Silva upgrade. I 
imagine it may be similarly difficult for upgrading, say, Plone, too.

Regards,

Martijn