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https://issues.apache.org/jira/browse/LUCENE-1794?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12741337#action_12741337
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Uwe Schindler commented on LUCENE-1794:
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{quote}
different things need to happen here: for example Thai and Smart Chinese have
filters that keep state and require a reset(). But i don't know, seems like it
could be factored into Analyzer and reset() called on both tokenizer and
filters...
I am trying to imagine a situation where refactoring this kind of thing would
prevent some flexibility, but i think if tokenstreams keep state in some wierd
way they should implement reset() for this purpose.
{quote}
reset() is always called by IndexWriter before consuming the TokenStream; end()
is called as last operation on the TokenStream.
> 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
>
>
> 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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