One addition: In general, your way how to get a scorer from a query is not supported (and does not work correct for all queries), the right way is *not* to use query.createWeight(searcher) but instead searcher.createNormalizedWeight(query).
But that has nothing to do with the null scorer, which is a valid return value if the term does not exist and no docs can ever match. > You are creating a TermScorer on a composite (non atomic IndexReader like > SegmentReader). That's still supported in 3.x, but no longer allowed in 4.0. > The backwards layer in 3.x had a bug before Lucene 3.5, so theoretically your > code should work on 3.5: > https://issues.apache.org/jira/browse/LUCENE-3442 > > But still: null is a valid return value for scorer()!!! It may return null, if no > document can match this query. Means the term does not exist at all. > > Uwe > > ----- > Uwe Schindler > H.-H.-Meier-Allee 63, D-28213 Bremen > http://www.thetaphi.de > eMail: u...@thetaphi.de > > > > -----Original Message----- > > From: Michael Kazekin [mailto:michael.kaze...@mediainsight.info] > > Sent: Friday, January 27, 2012 4:39 PM > > To: java-user@lucene.apache.org > > Subject: Null scorer constructed by TermQuery > > > > Hi! > > > > I have a Solr-constructed index, which I read with this code: > > > > Directory directory = FSDirectory.open(file); IndexReader reader = > > IndexReader.open(directory, true); IndexSearcher searcher = new > > IndexSearcher(reader); > > > > I try to get a Scorer with this TermQuery ("lang" field is indexed and > stored and > > all data is available) > > > > TermQuery atomQuery = new TermQuery(new Term("lang", "ru")); > > > > Weight weight = atomQuery.createWeight(searcher); Scorer scorer = > > weight.scorer(reader, true, false); > > > > > > > > after this scorer is null. > > > > > > > > Does anyone know, what could be the problem here? > > > > I tried it with Solr. 3.4 and with Solr 3.5, results are the same. > > > > --------------------------------------------------------------------- > > To unsubscribe, e-mail: java-user-unsubscr...@lucene.apache.org > > For additional commands, e-mail: java-user-h...@lucene.apache.org > > > --------------------------------------------------------------------- > To unsubscribe, e-mail: java-user-unsubscr...@lucene.apache.org > For additional commands, e-mail: java-user-h...@lucene.apache.org --------------------------------------------------------------------- To unsubscribe, e-mail: java-user-unsubscr...@lucene.apache.org For additional commands, e-mail: java-user-h...@lucene.apache.org
