[Zope-CMF] Improvement of CMFTopic?

[marc lindahl]

I was playing around with CMFTopic, trying to figure out how best to utilize
it, and it occurred to me that:

Since 'list criteria' seems to do an OR match of things on the list, perhaps
either there could be a way to have an AND list to refine a search, or, be
able to add multiple instances of the same search field id which would
AND...

This to avoid having to build a pile of subtopics just to get an AND
search...

This in the context of the 'subject' field, used as a multiple-select list
as outlined in the DublinCore docs (and applicable to other similar field).

Allowing multiple instances of the same id shouldn't be to hard (something
to do with listAvailableFields?)... adding a radio button set to list
criterion to tag them as AND or OR would be more of a pain (another property
to look after?)

Thoughts anyone?