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Mahesh commented on LUCENE-7493: -------------------------------- Thanks Michael McCandless for helping out. Followed your steps and attached patch file. Hope its what you expect. > Support of TotalHitCountCollector for FacetCollector.search api if numdocs > passed as zero. > ------------------------------------------------------------------------------------------ > > Key: LUCENE-7493 > URL: https://issues.apache.org/jira/browse/LUCENE-7493 > Project: Lucene - Core > Issue Type: Improvement > Reporter: Mahesh > Attachments: LUCENE-7493.patch > > > Hi, > I want to do drill down search using FacetCollection below is the code > FacetsCollector facetCollector = new FacetsCollector(); > TopDocs topDocs = FacetsCollector.search(st.searcher, filterQuery, limit, > facetCollector); > I just want facet information so I pass limit as zero but I get error > "numHits must be > 0; please use TotalHitCountCollector if you just need the > total hit count". > For FacetCollector there is no way to initialize 'TotalHitCountCollector'. > Internally it always create either 'TopFieldCollector' or > 'TopScoreDocCollector' which does not allow limit as 0. > So if limit should be zero then there should be a way that > 'TotalHitCountCollector' should be initialized. > Better way would be to provide an api which takes query and collector as > inputs just like 'drillSideways.search(filterQuery, totalHitCountCollector)'. -- This message was sent by Atlassian JIRA (v6.3.4#6332) --------------------------------------------------------------------- To unsubscribe, e-mail: dev-unsubscr...@lucene.apache.org For additional commands, e-mail: dev-h...@lucene.apache.org