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From AlisonCallahan <alison.calla...@gmail.com>
Subject RE: PrefixQuery returning 0 results
Date Wed, 17 Feb 2010 16:21:03 GMT

Nevermind ... I wrote too soon ... It works!! Thank you Uwe Schindler!

Alison Callahan

AlisonCallahan wrote:
> 
> Originally "subject" was indexed with ANALYZED ... I changed it to
> NOT_ANALYZED (there was no "keyword" option for indexing in Lucene 3.0.0),
> and I am still having the same problem.
> 
> Thanks,
> 
> Alison Callahan
> 
> 
> Uwe Schindler wrote:
>> 
>> 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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>> 
>> 
>> 
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>> 
>> 
> 
> 

-- 
View this message in context: http://old.nabble.com/PrefixQuery-returning-0-results-tp27625646p27626321.html
Sent from the Lucene - Java Users mailing list archive at Nabble.com.


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