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From "Uwe Schindler" <...@thetaphi.de>
Subject RE: PrefixQuery returning 0 results
Date Wed, 17 Feb 2010 16:01:28 GMT
How is "subject indexed"?

I fit is indexed with ANALYZED not as keyword only, StandardAnalyzer will remove <, lowercase
and so on.

-----
Uwe Schindler
H.-H.-Meier-Allee 63, D-28213 Bremen
http://www.thetaphi.de
eMail: uwe@thetaphi.de


> -----Original Message-----
> From: AlisonCallahan [mailto:alison.callahan@gmail.com]
> Sent: Wednesday, February 17, 2010 4:39 PM
> To: java-user@lucene.apache.org
> Subject: PrefixQuery returning 0 results
> 
> 
> I have indexed RDF in N-triple format (with three fields -- "subject",
> "predicate", "object") and now am trying to query the index with a
> PrefixQuery on the "subject" field. My test case is to get back all
> documents whose subject field starts with the prefix "<http", and I
> would
> expect to get back all documents. Instead, the PrefixQuery returns 0
> documents. I have read and can't see why the PrefixQuery is returning 0
> results.
> 
> Here is the relevant code:
> 
> 	IndexReader n3reader = IndexReader.open(FSDirectory.open(new
> File(index)),
> true);
> 	Searcher searcher = new IndexSearcher(n3reader);
> 	Analyzer analyzer = new StandardAnalyzer(Version.LUCENE_CURRENT);
> 
> 	String test = "<http";
> 
> 	Query nsQuery = new PrefixQuery(new Term("subject", test));
> 
> 	TopDocs hits = searcher.search(nsQuery, 10);
> 
> 	System.out.println("Hits: "+hits.totalHits);
> 
> This code prints out '0' hits ... Any suggestions for why this isn't
> working?? Thanks,
> 
> Alison Callahan
> --
> View this message in context: http://old.nabble.com/PrefixQuery-
> returning-0-results-tp27625646p27625646.html
> Sent from the Lucene - Java Users mailing list archive at Nabble.com.
> 
> 
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