[Zope-CMF] Topics and (sub)topics

[marc lindahl]

> From: Tres Seaver <tseaver@palladion.com>

> 
> - "And"-ing the acquired query with the local one seems "natural"
> to me only where the acquired query uses different indices than
> the local one.  Where the two use the same index, I would expect
> the local one to "override" the acquired one (which is, in fact,
> what happens now in containment-based, 'acquireCriteria==1' cases).
> Again, we would likely need a knob to allow the owner to configure
> whether to extend or to replace conflicting acquired criteria.

The counterexample where ANDing on the same index is natural is on
Subject.... since it's intended as a multiple-select index, this is the
perfect way to get progressively refined (narrowed) topic lists, like
Yahoo's organizational structure.

my $0.0002...