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From Clemens Wyss <clemens...@mysign.ch>
Subject AW: negative wildcard query
Date Thu, 30 Jun 2011 08:51:07 GMT
Thx!

> -----Ursprüngliche Nachricht-----
> Von: Uwe Schindler [mailto:uwe@thetaphi.de]
> Gesendet: Donnerstag, 30. Juni 2011 10:32
> An: java-user@lucene.apache.org
> Betreff: RE: negative wildcard query
> 
> Pure negative queries do not work, you have to add a MUST clause that hits
> all documents, e.g. MatchAllDocsQuery:
> 
> query = new BooleanQuery();
> query.add(new MatchAllDocsQuery(), Occur.MUST) query.add(new
> WildcardQuery(new Term( "f", "*test*" )), Occur.MUST_NOT );
> 
> Uwe
> 
> -----
> Uwe Schindler
> H.-H.-Meier-Allee 63, D-28213 Bremen
> http://www.thetaphi.de
> eMail: uwe@thetaphi.de
> 
> 
> > -----Original Message-----
> > From: Clemens Wyss [mailto:clemensdev@mysign.ch]
> > Sent: Thursday, June 30, 2011 9:44 AM
> > To: java-user@lucene.apache.org
> > Subject: AW: negative wildcard query
> >
> > My testcase/context:
> >
> > query = new BooleanQuery();
> > query.add( new WildcardQuery( new Term( "f", "*test*" ) ),
> > Occur.MUST_NOT ); filter = new QueryWrapperFilter( query ); result =
> > indexSearcher.search( new WildcardQuery( new Term( "description",
> > "*happy*" ) ), filter, 10 );
> >
> > The filter never ever lets any documents through...when calling
> >
> > result = indexSearcher.search( new WildcardQuery( new Term(
> > "description", "*happy*" ) ), 10 );
> >
> > I have hits...
> >
> > > -----Ursprüngliche Nachricht-----
> > > Von: Clemens Wyss [mailto:clemensdev@mysign.ch]
> > > Gesendet: Donnerstag, 30. Juni 2011 05:37
> > > An: java-user@lucene.apache.org
> > > Betreff: AW: negative wildcard query
> > >
> > > Karl, I just saw, that I had a typo in my initial post. It should be:
> > >
> > > Say I have a document with a single field "f". How can I search
> > > Documents which have not "test" in field "f"
> > > I tried:
> > > -f: *test*
> > > f: -*test*
> > > f: NOT *test*
> > >
> > > but no luck. Using WildCardQuery class...
> > > Any advices?
> > >
> > > Thx
> > > Clemens
> > >
> > > > -----Ursprüngliche Nachricht-----
> > > > Von: Karl Wettin [mailto:karl.wettin@gmail.com]
> > > > Gesendet: Mittwoch, 29. Juni 2011 22:36
> > > > An: java-user@lucene.apache.org
> > > > Betreff: Re: negative wildcard query
> > > >
> > > > You'll also need things to exclude from, eg a MatchAllDocsQuery.
> > > >
> > > > 	karl
> > > >
> > > > 29 jun 2011 kl. 17.25 skrev Clemens Wyss:
> > > >
> > > > > Say I have a document with field "f1". How can I search
> > > > > Documents which
> > > > have not "test" in field "f"
> > > > > I tried:
> > > > > -f: *test*
> > > > > f: -*test*
> > > > > f: NOT *test*
> > > > >
> > > > > but no luck. Using WildCardQuery class...
> > > > > Any advices?
> > > > >
> > > > > Thx
> > > > > Clemens
> > > > >
> > > > > ----------------------------------------------------------------
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> 
> 
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