[Zope] zope.schema: association vs. containment in Object, List

[Fred Drake]

On Fri, Jun 6, 2008 at 8:08 PM, Sean Upton <sdupton at gmail.com> wrote:
> mechanism or implementation details underneath, so I think I'll
> continue to use custom field types marked with an IRelationshipField
> interface, and assume the built-in Object, List fields are only used
> for containment.  The only thing I do not like about my direction is

I'd rather not make any assumption at all; use two interfaces: one
that indicates references, and one that indicates containment.  That
allows you to raise an exception for fields that don't specify, which
would be useful during testing and debugging.  For each such field
found, you'll get to decide how to handle it and stamp the appropriate
interface on the field.


 -Fred

-- 
Fred L. Drake, Jr. <fdrake at gmail.com>
"Chaos is the score upon which reality is written." --Henry Miller