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https://issues.apache.org/jira/browse/LUCENE-3233?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Robert Muir updated LUCENE-3233:
--------------------------------

    Attachment: LUCENE-3233.patch

Updated patch: 
* renamed to SynonymFilter
* added not-so-sophisticated backwards layer
* added tests
* added parser for format="wordnet"
* removed contrib/wordnet

but i found some bugs (well one, surely is) in the new tests, so i added 
nocommits here.

> HuperDuperSynonymsFilterâ„¢
> -------------------------
>
>                 Key: LUCENE-3233
>                 URL: https://issues.apache.org/jira/browse/LUCENE-3233
>             Project: Lucene - Java
>          Issue Type: Improvement
>            Reporter: Robert Muir
>         Attachments: LUCENE-3223.patch, LUCENE-3233.patch, LUCENE-3233.patch, 
> LUCENE-3233.patch, LUCENE-3233.patch, LUCENE-3233.patch, LUCENE-3233.patch, 
> LUCENE-3233.patch, LUCENE-3233.patch, LUCENE-3233.patch, LUCENE-3233.patch, 
> LUCENE-3233.patch, LUCENE-3233.patch, LUCENE-3233.patch, LUCENE-3233.patch, 
> synonyms.zip
>
>
> The current synonymsfilter uses a lot of ram and cpu, especially at build 
> time.
> I think yesterday I heard about "huge synonyms files" three times.
> So, I think we should use an FST-based structure, sharing the inputs and 
> outputs.
> And we should be more efficient with the tokenStream api, e.g. using 
> save/restoreState instead of cloneAttributes()

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