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https://issues.apache.org/jira/browse/LUCENE-1229?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Hiroaki Kawai updated LUCENE-1229:
----------------------------------

    Attachment: NGramTokenFilter.patch

Added a patch NGramTokenFilter.patch. This patch includes LUCENE-1224 .

> NGramTokenFilter optimization in query phase
> --------------------------------------------
>
>                 Key: LUCENE-1229
>                 URL: https://issues.apache.org/jira/browse/LUCENE-1229
>             Project: Lucene - Java
>          Issue Type: Improvement
>          Components: contrib/*
>            Reporter: Hiroaki Kawai
>         Attachments: NGramTokenFilter.patch
>
>
> I found that NGramTokenFilter-ed token stream could be optimized in query.
> A standard 1,2 NGramTokenFilter will generate a token stream from "abcde" as 
> follows:
> a ab b bc c cd d de e
> When we index "abcde", we'll use all of the tokens.
> But when we query, we only need:
> ab cd de

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