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https://issues.apache.org/jira/browse/LUCENE-1794?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12741835#action_12741835
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DM Smith commented on LUCENE-1794:
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If CachingTokenFilter.reset() means rewind, then how does one reset it?
Without that, it is not reusable.
When I did the prior token/filter changes, IIRC, some were not reusable. Maybe
reset needs to be documented that for reuse, the common case, it means reset
(or no-op) and otherwise means rewind. And then document which classes are not
reusable.
Or should these single use classes be made reusable? This would argue for a
rewind() method. IMHO it is a bug that reset does not follow the contract.
> implement reusableTokenStream for all contrib analyzers
> -------------------------------------------------------
>
> Key: LUCENE-1794
> URL: https://issues.apache.org/jira/browse/LUCENE-1794
> Project: Lucene - Java
> Issue Type: Improvement
> Components: contrib/analyzers
> Reporter: Robert Muir
> Assignee: Robert Muir
> Priority: Minor
> Fix For: 2.9
>
> Attachments: LUCENE-1794.patch, LUCENE-1794.patch, LUCENE-1794.patch
>
>
> most contrib analyzers do not have an impl for reusableTokenStream
> regardless of how expensive the back compat reflection is for indexing speed,
> I think we should do this to mitigate any performance costs. hey, overall it
> might even be an improvement!
> the back compat code for non-final analyzers is already in place so this is
> easy money in my opinion.
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