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https://issues.apache.org/jira/browse/LUCENE-3431?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Chris Male resolved LUCENE-3431.
--------------------------------

       Resolution: Fixed
    Fix Version/s: 4.0
                   3.5
         Assignee: Chris Male

3x:
Committed revision 1170423.

Trunk:
Committed revision 1170424.

I will tackle proper reusability along with the other remaining Analyzers.

> Make QueryAutoStopWordAnalyzer immutable and reusable
> -----------------------------------------------------
>
>                 Key: LUCENE-3431
>                 URL: https://issues.apache.org/jira/browse/LUCENE-3431
>             Project: Lucene - Java
>          Issue Type: Improvement
>          Components: modules/analysis
>            Reporter: Chris Male
>            Assignee: Chris Male
>             Fix For: 3.5, 4.0
>
>         Attachments: LUCENE-3431-3x.patch, LUCENE-3431-trunk.patch
>
>
> Currently QueryAutoStopWordAnalyzer allows its list of stop words to be 
> changed after instantiation through its addStopWords() methods.  This stops 
> the Analyzer from being reusable since it must instantiate its StopFilters 
> every time.
> Having these methods means that although the Analyzer can be instantiated 
> once and reused between IndexReaders, the actual analysis stack is not 
> reusable (which is probably the more expensive part).
> So lets change the Analyzer so that its stop words are set at instantiation 
> time, facilitating reuse.

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