I think you can't achive that without postprocessing. The indexes themselves only know about 'or' and 'and' but not about 'xor'. -aj --On Mittwoch, 30. Juni 2004 15:27 Uhr -0400 Paul Winkler <pw_lists@slinkp.com> wrote:

Hi,

I have a bunch of objects (CMF content but I don't think that's relevant to the question) which are conceptually closely related - they are different versions of the same content. I want to be able to ensure that a search returns at most one of the related objects. I can't think of any way to do this with stock ZCatalog, and I've been looking at Dieter's AdvancedQuery but can't quite sort it out there either. The semantics I want are like this:

given a FieldIndex F, an object o, and a query parameter foo, o is a match if o's value for F is foo or o's value for F is "default" AND there are no relatives of o whose value for F is foo

I think I could implement this with a bunch of post-processing of the query results, but that seems likely to be slowwww.

any ideas?

--

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