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From "Michael McCandless (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (LUCENE-4748) Add DrillSideways helper class to Lucene facets module
Date Fri, 22 Feb 2013 16:02:12 GMT

    [ https://issues.apache.org/jira/browse/LUCENE-4748?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13584372#comment-13584372
] 

Michael McCandless commented on LUCENE-4748:
--------------------------------------------

bq. can you change DrillSideways class so that accept optionally some kind of factory for
the facet collector?

Hmm you mean instead of calling FacetsCollector.create?  Can you describe the use case behind
this?  (Hmm maybe FacetSearchParams already exposes a way to control which collector is created?).
                
> 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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