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From "Simon Willnauer (JIRA)" <>
Subject [jira] [Commented] (LUCENE-3396) Make TokenStream Reuse Mandatory for Analyzers
Date Mon, 05 Sep 2011 09:07:10 GMT


Simon Willnauer commented on LUCENE-3396:

this patch looks good to me! I like the reuse strategy and how you factored out the thread
local stuff. 
I think we should commit and let bake this in?

> Make TokenStream Reuse Mandatory for Analyzers
> ----------------------------------------------
>                 Key: LUCENE-3396
>                 URL:
>             Project: Lucene - Java
>          Issue Type: Improvement
>          Components: modules/analysis
>            Reporter: Chris Male
>         Attachments: LUCENE-3396-rab.patch, LUCENE-3396-rab.patch, LUCENE-3396-rab.patch,
> In LUCENE-2309 it became clear that we'd benefit a lot from Analyzer having to return
reusable TokenStreams.  This is a big chunk of work, but its time to bite the bullet.
> I plan to attack this in the following way:
> - Collapse the logic of ReusableAnalyzerBase into Analyzer
> - Add a ReuseStrategy abstraction to Analyzer which controls whether the TokenStreamComponents
are reused globally (as they are today) or per-field.
> - Convert all Analyzers over to using TokenStreamComponents.  I've already seen that
some of the TokenStreams created in tests need some work to be reusable (even if they aren't
> - Remove Analyzer.reusableTokenStream and convert everything over to using .tokenStream
(which will now be returning reusable TokenStreams).

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