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https://issues.apache.org/jira/browse/LUCENE-3801?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13220915#comment-13220915
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Robert Muir commented on LUCENE-3801:
-------------------------------------

yeah as an example use case we could use Pair<weight,originalText> as an 
'output' but 
store the kuromoji-generated readings as the input side for japanese text, we 
would
just analyze the japanese input to a reading at query-time too and I think it 
would work...

                
> Generify FST shortestPaths() to take a comparator
> -------------------------------------------------
>
>                 Key: LUCENE-3801
>                 URL: https://issues.apache.org/jira/browse/LUCENE-3801
>             Project: Lucene - Java
>          Issue Type: Improvement
>          Components: core/FSTs
>    Affects Versions: 3.6, 4.0
>            Reporter: Robert Muir
>            Assignee: Robert Muir
>         Attachments: LUCENE-3801.patch, LUCENE-3801.patch, LUCENE-3801.patch
>
>
> Not sure we should do this, it costs 5-10% performance for WFSTSuggester.
> But maybe we can optimize something here, or maybe its just no big deal to us.
> Because in general, this could be pretty powerful, e.g. if you needed to 
> store 
> some custom stuff in the suggester, you could use pairoutputs, or whatever.
> And the possibility we might need shortestPaths for other cool things... at 
> the
> least I just wanted to have the patch up here.
> I haven't tested this on pairoutputs... but i've tested it with e.g. 
> FloatOutputs
> and other things and it works fine.
> I tried to minimize the generics violations, there is only 1 (cannot create 
> generic array).

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