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From "Robert Muir (JIRA)" <j...@apache.org>
Subject [jira] Commented: (LUCENE-2014) position increment bug: smartcn
Date Thu, 29 Oct 2009 09:48:59 GMT

    [ https://issues.apache.org/jira/browse/LUCENE-2014?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12771365#action_12771365
] 

Robert Muir commented on LUCENE-2014:
-------------------------------------

bq. I also merged the BaseTokenStreamTestcase back, because the bogus values setter was missing
in 2.9. Now the tests produce same results. 

good deal... i didnt test the bug with the JUnit test against 2.9, but my IndexWriter threw
the exception if i used Version.LUCENE_29, so i knew it was affected.


> position increment bug: smartcn
> -------------------------------
>
>                 Key: LUCENE-2014
>                 URL: https://issues.apache.org/jira/browse/LUCENE-2014
>             Project: Lucene - Java
>          Issue Type: Bug
>          Components: contrib/analyzers
>            Reporter: Robert Muir
>            Assignee: Robert Muir
>             Fix For: 3.0
>
>         Attachments: LUCENE-2014.patch, LUCENE-2014.patch, LUCENE-2014_branch.patch
>
>
> If i use LUCENE_VERSION >= 2.9 with smart chinese analyzer, it will crash indexwriter
with any reasonable amount of chinese text.
> its especially annoying because it happens in 2.9.1 RC as well.
> this is because the position increments for tokens after stopwords are bogus:
> Here's an example (from test case), where the position increment should be 2, but is
instead 91975314!
> {code}
>   public void testChineseStopWords2() throws Exception {
>     Analyzer ca = new SmartChineseAnalyzer(Version.LUCENE_CURRENT); /* will load stopwords
*/
>     String sentence = "Title:San"; // : is a stopword
>     String result[] = { "titl", "san"};
>     int startOffsets[] = { 0, 6 };
>     int endOffsets[] = { 5, 9 };
>     int posIncr[] = { 1, 2 };
>     assertAnalyzesTo(ca, sentence, result, startOffsets, endOffsets, posIncr);
>   }
> {code}
> junit.framework.AssertionFailedError: posIncrement 1 expected:<2> but was:<91975314>
> 	at junit.framework.Assert.fail(Assert.java:47)
> 	at junit.framework.Assert.failNotEquals(Assert.java:280)
> 	at junit.framework.Assert.assertEquals(Assert.java:64)
> 	at junit.framework.Assert.assertEquals(Assert.java:198)
> 	at org.apache.lucene.analysis.BaseTokenStreamTestCase.assertTokenStreamContents(BaseTokenStreamTestCase.java:83)
> 	...

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