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https://issues.apache.org/jira/browse/LUCENE-4748?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13584399#comment-13584399
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Nicola Buso commented on LUCENE-4748:
-------------------------------------
I have this case (I'm sure I'm not alone):
http://markmail.org/search/?q=FacetRequest%20include%20residue#query:FacetRequest%20include%20residue%20list%3Aorg.apache.lucene.java-user+page:1+mid:2qgovhht5miqmhlk+state:results
I implemented this creating a facetcollector that take count of the selection
the user has done. I've not the 4.2 version where you introduced
FacetsCollector.create(..) method; I will check there if I find something
interesting.
> Add DrillSideways helper class to Lucene facets module
> ------------------------------------------------------
>
> Key: LUCENE-4748
> URL: https://issues.apache.org/jira/browse/LUCENE-4748
> Project: Lucene - Core
> Issue Type: Improvement
> Components: modules/facet
> Reporter: Michael McCandless
> Assignee: Michael McCandless
> Fix For: 4.2, 5.0
>
> Attachments: DrillSideways-alternative.tar.gz, LUCENE-4748.patch,
> LUCENE-4748.patch, LUCENE-4748.patch, LUCENE-4748.patch, LUCENE-4748.patch,
> LUCENE-4748.patch, LUCENE-4748.patch, LUCENE-4748.patch
>
>
> This came out of a discussion on the java-user list with subject
> "Faceted search in OR": http://markmail.org/thread/jmnq6z2x7ayzci5k
> The basic idea is to count "near misses" during collection, ie
> documents that matched the main query and also all except one of the
> drill down filters.
> Drill sideways makes for a very nice faceted search UI because you
> don't "lose" the facet counts after drilling in. Eg maybe you do a
> search for "cameras", and you see facets for the manufacturer, so you
> drill into "Nikon".
> With drill sideways, even after drilling down, you'll still get the
> counts for all the other brands, where each count tells you how many
> hits you'd get if you changed to a different manufacturer.
> This becomes more fun if you add further drill-downs, eg maybe I next drill
> down into Resolution=10 megapixels", and then I can see how many 10
> megapixel cameras all other manufacturers, and what other resolutions
> Nikon cameras offer.
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