You have to rewrite the wrapper query. ----- Uwe Schindler H.-H.-Meier-Allee 63, D-28213 Bremen http://www.thetaphi.de eMail: u...@thetaphi.de
> -----Original Message----- > From: Carsten Schnober [mailto:schno...@ids-mannheim.de] > Sent: Tuesday, August 14, 2012 10:59 AM > To: java-user > Subject: UnsupportedOperationException: Query should have been rewritten > > Dear list, > I am trying to combine a WildcardQuery and a SpanQuery because I need to > extract spans from the index for further processing. I realise that there have > been a few public discussions about this topic around, but I still fail to get what I > am missing here. My code is this (Lucene 3.6.0): > > ================================================================ > ====== > WildcardQuery wildcard = new WildcardQuery(new Term("field", "bro*")); > SpanQuery query = new > SpanMultiTermQueryWrapper<WildcardQuery>(wildcard); > // query = query.rewrite(reader); > Spans luceneSpans = query.getSpans(reader); > ================================================================ > ====== > > This throws the following exception: > ================================================================ > ====== > Exception in thread "main" java.lang.UnsupportedOperationException: > Query should have been rewritten at > org.apache.lucene.search.spans.SpanMultiTermQueryWrapper.getSpans(Span > MultiTermQueryWrapper.java:114) > ================================================================ > ====== > > I am basically aware of the problem that I cannot apply a MultiTermQuery > instance (like a WildcardQuery) without calling rewrite(), but on the other > hand, rewrite() returns a Query object that I cannot use as a SpanQuery > instance. > > I'm almost sure that there is a reasonable solution for this problem that I am > not able to spot. Or do I have to migrate either to Lucene 4 or use a > SpanRegexQuery instead which I do not really want to because it is marked as > deprecated. > > Thank you very much! > Carsten > > -- > Institut für Deutsche Sprache | http://www.ids-mannheim.de > Projekt KorAP | http://korap.ids-mannheim.de > Tel. +49-(0)621-43740789 | schno...@ids-mannheim.de > Korpusanalyseplattform der nächsten Generation Next Generation Corpus > Analysis Platform > > --------------------------------------------------------------------- > 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
