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From "Chris Male (JIRA)" <>
Subject [jira] [Created] (LUCENE-3396) Make TokenStream Reuse Mandatory for Analyzers
Date Tue, 23 Aug 2011 07:52:29 GMT
Make TokenStream Reuse Mandatory for Analyzers

                 Key: LUCENE-3396
             Project: Lucene - Java
          Issue Type: Improvement
          Components: modules/analysis
            Reporter: Chris Male

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 reused).
- Remove Analyzer.reusableTokenStream and convert everything over to using .tokenStream (which
will now be returning reusable TokenStreams).

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