Re: RFC: Schema Refactoring, first steps

Rob Miller wrote:
> On Thu, 13 Jul 2006 15:24:55 -0400, whit wrote:
> 
>> I added rocky's requested clarifications. feel free to add language (or
>> proprosals):
>>
>> https://svn.plone.org/svn/archetypes/proposal/schemaproprosal.txt
> 
> i've read all of this, and, while i agree in general with the design
> sentiments, i'm not quite convinced that it's the right way to go. 
> honestly, my thought is that i'm not sure we should be investing this much
> energy in making AT better.  as you all know from my other posts, i'm
> strongly in support of making the Z3 stuff and the AT stuff both play
> together well within the Plone UI and within the same content objects. 
> but that's specifically so that we can ease the transition off of AT.  i'm
> quite content to change AT just enough so that we can make this happen
> smoothly, and i'm suspicious of any major efforts that go toward improving
> AT rather than toward improving the Z3 story.

Whilst I agree with this, I think we need to be careful about the 
proverbial "stop energy". I don't think that's what you're saying here, 
but if we say "we can't do any innovation in Archetypes", we are cutting 
off a valuable source of use cases for future work, and we are choking 
off innovation in the framework that still supports 90% of the solution 
out there (and on which core Plone depends heavily).

It's purely a balance thing. For example, I wouldn't accept that we 
couldn't do the simple schema-by-interface work (which is mostly done, 
and would be a huge boost to certain use cases where all you want to do 
is to extend or modify the field of a particular type but keep the rest 
of its logic in place) if the only reason was "we don't want to spend 
time on AT" (which again, I don't think is what you're saying). On the 
other hand, I fully agree that we don't want to fundamentally refactor 
AT if it means it re-invents many things that already exist in Z3 land.

The better-interoperbility argument you make is really good (though I 
can't envisage how it'd work right now), and probably what will allow us 
to strike that balance in the end. All I'm saying is, let's be pragmatic 
about what we can achieve with AT in the short term, to the greatest 
cost-benefit, as well as where want to go in the future.

Martin



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