You may also want to take a look at how AnalyticsQueries can be plugged in. This won't show you how to do the implementation but it will show you how you can plugin a custom collector.
http://heliosearch.org/solrs-new-analyticsquery-api/ http://heliosearch.org/solrs-mergestrategy/ Joel Bernstein Search Engineer at Heliosearch On Tue, Jan 13, 2015 at 4:45 PM, Alexandre Rafalovitch <arafa...@gmail.com> wrote: > Sounds like: > > https://cwiki.apache.org/confluence/display/solr/Collapse+and+Expand+Results > > http://heliosearch.org/the-collapsingqparserplugin-solrs-new-high-performance-field-collapsing-postfilter/ > > The main issue is your multi-field criteria. So you may need to > extend/overwrite the comparison method. Plus you'd need to keep the > counts. Which you should know since you are doing the filtering. > > Is this the right direction for what you need? > > Regards, > Alex. > ---- > Sign up for my Solr resources newsletter at http://www.solr-start.com/ > > > On 13 January 2015 at 16:29, tedsolr <tsm...@sciquest.com> wrote: > > I have a complicated problem to solve, and I don't know enough about > > lucene/solr to phrase the question properly. This is kind of a shot in > the > > dark. My requirement is to return search results always in completely > > "collapsed" form, rolling up duplicates with a count. Duplicates are > defined > > by whatever fields are requested. If the search requests fields A, B, C, > > then all matched documents that have identical values for those 3 fields > are > > "dupes". The field list may change with every new search request. What I > do > > know is the super set of all fields that may be part of the field list at > > index time. > > > > I know this can't be done with configuration alone. It doesn't seem > > performant to retrieve all 1M+ docs and post process in Java. A very > smart > > person told me that a custom hit collector should be able to do the > > filtering for me. So, maybe I create a custom search handler that somehow > > exposes this custom hit collector that can use FieldCache or DocValues to > > examine all the matches and filter the results in the way I've described > > above. > > > > So assuming this is a viable solution path, can anyone suggest some > helpful > > posts, code fragments, books for me to review? I admit to being out of my > > depth, but this requirement isn't going away. I'm grasping for straws > right > > now. > > > > thanks > > (using Solr 4.9) > > > > > > > > > > > > -- > > View this message in context: > http://lucene.472066.n3.nabble.com/Engage-custom-hit-collector-for-special-search-processing-tp4179348.html > > Sent from the Solr - User mailing list archive at Nabble.com. >
