Re: Re: What does Five and Z3 mean for Archetypes?

On Fri, 2005-11-18 at 17:53 +0100, Martijn Faassen wrote:
> Do annotations fit in somewhere? Zope 3 doesn't have a storage framework 
> yet, so I think Zope 3 has some work to do here. ZPatterns gurus speak 
> up.. :)

Well Zope 3 really has a storage framework - the ZODB :-) Even Philip
based PEAK's storage layer (which is a much simpler incarnation of
ZPatterns) on ZODB's DataManager and he evens calls it a DataManager
(not SpecialistRackThingyMajig ;-) ). It should be entirely possible to
adapt a container in Zope3 to a SQLDataManager or a
LDAPplusSQLDataManager or WhateverYouLikeDatamanager.

Look at IDataManager and all the interfaces that subclass it in:
http://svn.eby-sarna.com/PEAK/src/peak/storage/interfaces.py?rev=2060&view=markup

> Okay, and to avoid confusing, Z3 does use the word "field", but for 
> that's for the attribute declaration on the schema/interface, i.e. we 
> have Text fields, Int fields and the like.
> 
> > a reffield    nothing currently
> 
> What do reffields do in AT?

I once tried to work out something like references (called Associations)
with Shane Hathaway for Zope3 but it never became anything:
http://www.zope.org/Wikis/DevSite/Projects/ComponentArchitecture/AssociationService

The one thing that was interesting about it was that it was based on
associations in the OMG's MOF (Meta Object Facility) model. It might be
worth considering some of these ideas when building a reference engine
for Zope3.

-- 
Roché Compaan
Upfront Systems                 http://www.upfrontsystems.co.za



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