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https://issues.apache.org/jira/browse/LUCENE-1794?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12741334#action_12741334
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Robert Muir commented on LUCENE-1794:
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{quote}
Robert - wouldn't it make sense to pull SavedStreams (maybe call it
ReusableStreams?) up to Analyzer, and have all the extensions use it? I
couldn't help but notice that this code is duplicated in all the Analyzers.
{quote}
Shai, it would be great if somehow this could be factored. its not complete
duplication: 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}
Also, and I don't know if it's a matter for a different issue - the fact that
reusableTokenStream accepts a field name is misleading.
{quote}
probably to support PerFieldAnalyzerWrapper is my first thought. how would
PerFieldAnalyzerWrapper work correctly if field is not supplied???
> 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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