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https://issues.apache.org/jira/browse/LUCENE-3392?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Olivier Favre updated LUCENE-3392:
----------------------------------

    Attachment: ComboAnalyzer-lucene3x.patch

Patch for lucene-3x.
Tested with Sun's Java 1.6.0_26-b03.
Uses a special factory for cloning Readers, some implementation use reflection 
to gain access to private fields in order to reduce the need to read and copy a 
Readers' content.

> Combining analyzers output
> --------------------------
>
>                 Key: LUCENE-3392
>                 URL: https://issues.apache.org/jira/browse/LUCENE-3392
>             Project: Lucene - Java
>          Issue Type: New Feature
>            Reporter: Olivier Favre
>            Priority: Minor
>              Labels: analysis
>             Fix For: 3.4
>
>         Attachments: ComboAnalyzer-lucene3x.patch
>
>   Original Estimate: 48h
>  Remaining Estimate: 48h
>
> It should be easy to combine the output of multiple Analyzers, or 
> TokenStreams.
> A ComboAnalyzer and a ComboTokenStream class would take multiple instances, 
> and multiplex their output, keeping a rough order of tokens like increasing 
> position then increasing start offset then increasing end offset.

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