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From "Alexei Dets (JIRA)" <j...@apache.org>
Subject [jira] Commented: (LUCENE-1140) NPE in StopFilter caused by StandardAnalyzer(boolean replaceInvalidAcronym) constructor
Date Fri, 18 Jan 2008 21:31:36 GMT

    [ https://issues.apache.org/jira/browse/LUCENE-1140?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12560554#action_12560554
] 

Alexei Dets commented on LUCENE-1140:
-------------------------------------

Yes, patch fixes the issue.

> NPE in StopFilter caused by StandardAnalyzer(boolean replaceInvalidAcronym) constructor
> ---------------------------------------------------------------------------------------
>
>                 Key: LUCENE-1140
>                 URL: https://issues.apache.org/jira/browse/LUCENE-1140
>             Project: Lucene - Java
>          Issue Type: Bug
>          Components: Analysis
>    Affects Versions: 2.3
>            Reporter: Alexei Dets
>            Assignee: Grant Ingersoll
>            Priority: Blocker
>             Fix For: 2.3
>
>         Attachments: LUCENE-1140.patch
>
>
> I think that I found a problem with the new code (https://issues.apache.org/jira/browse/LUCENE-1068).
> Usage of the new constructor StandardAnalyzer(boolean replaceInvalidAcronym) causes NPE
in
> StopFilter:
> java.lang.NullPointerException
>         at org.apache.lucene.analysis.StopFilter.<init>(StopFilter.java:74)
>         at org.apache.lucene.analysis.StopFilter.<init>(StopFilter.java:86)
>         at
> org.apache.lucene.analysis.standard.StandardAnalyzer.tokenStream(StandardAnalyzer.java:151)
>         at
> org.apache.lucene.queryParser.QueryParser.getFieldQuery(QueryParser.java:452)
>         at
> org.apache.lucene.queryParser.QueryParser.Term(QueryParser.java:1133)
>         at
> org.apache.lucene.queryParser.QueryParser.Clause(QueryParser.java:1020)
>         at
> org.apache.lucene.queryParser.QueryParser.Query(QueryParser.java:948)
>         at
> org.apache.lucene.queryParser.QueryParser.Clause(QueryParser.java:1024)
>         at
> org.apache.lucene.queryParser.QueryParser.Query(QueryParser.java:948)
>         at
> org.apache.lucene.queryParser.QueryParser.TopLevelQuery(QueryParser.java:937)
>         at
> org.apache.lucene.queryParser.QueryParser.parse(QueryParser.java:147)
> The reason is that new constructor forgets to initialize the stopSet field:
>   public StandardAnalyzer(boolean replaceInvalidAcronym) {
>     this.replaceInvalidAcronym = replaceInvalidAcronym;
>   }
> I guess this should be changed to something like this:
>   public StandardAnalyzer(boolean replaceInvalidAcronym) {
>     this(STOP_WORDS);
>     this.replaceInvalidAcronym = replaceInvalidAcronym;
>   }
> The bug is present in RC3. Fix is one line, it'll be great to have it in 2.3
> release.

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