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Posted to dev@lucene.apache.org by "Mark Miller (JIRA)" <ji...@apache.org> on 2009/07/29 18:48:14 UTC
[jira] Resolved: (LUCENE-1752) incorrect snippet returned with
SpanScorer
[ https://issues.apache.org/jira/browse/LUCENE-1752?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Mark Miller resolved LUCENE-1752.
---------------------------------
Resolution: Fixed
Lucene Fields: [New, Patch Available] (was: [New])
Thanks Koji!
> incorrect snippet returned with SpanScorer
> ------------------------------------------
>
> Key: LUCENE-1752
> URL: https://issues.apache.org/jira/browse/LUCENE-1752
> Project: Lucene - Java
> Issue Type: Bug
> Components: contrib/highlighter
> Affects Versions: 2.9
> Reporter: Koji Sekiguchi
> Assignee: Mark Miller
> Priority: Minor
> Fix For: 2.9
>
> Attachments: LUCENE-1752.patch
>
>
> This problem was reported by my customer. They are using Solr 1.3 and uni-gram, but it can be reproduced with Lucene 2.9 and WhitespaceAnalyzer.
> {panel:title=Query}
> (f1:"a b c d" OR f2:"a b c d") AND (f1:"b c g" OR f2:"b c g")
> {panel}
> The snippet we expected is:
> {panel}
> x y z <B>a</B> <B>b</B> <B>c</B> <B>d</B> e f g <B>b</B> <B>c</B> <B>g</B>
> {panel}
> but we got:
> {panel}
> x y z <B>a</B> b c <B>d</B> e f g <B>b</B> <B>c</B> <B>g</B>
> {panel}
> Program to reproduce the problem:
> {code}
> public class TestHighlighter {
> static final String CONTENT = "x y z a b c d e f g b c g";
> static final String PH1 = "\"a b c d\"";
> static final String PH2 = "\"b c g\"";
> static final String F1 = "f1";
> static final String F2 = "f2";
> static final String F1C = F1 + ":";
> static final String F2C = F2 + ":";
> static final String QUERY_STRING =
> "(" + F1C + PH1 + " OR " + F2C + PH1 + ") AND ("
> + F1C + PH2 + " OR " + F2C + PH2 + ")";
> static Analyzer analyzer = new WhitespaceAnalyzer();
>
> public static void main(String[] args) throws Exception {
> QueryParser qp = new QueryParser( F1, analyzer );
> Query query = qp.parse( QUERY_STRING );
> CachingTokenFilter stream = new CachingTokenFilter( analyzer.tokenStream( F1, new StringReader( CONTENT ) ) );
> Scorer scorer = new SpanScorer( query, F1, stream, false );
> Highlighter h = new Highlighter( scorer );
> System.out.println( "query : " + QUERY_STRING );
> System.out.println( h.getBestFragment( analyzer, F1, CONTENT ) );
> }
> }
> {code}
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