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From "Grant Ingersoll (JIRA)" <j...@apache.org>
Subject [jira] Commented: (LUCENE-1306) CombinedNGramTokenFilter
Date Tue, 17 Jun 2008 20:09:45 GMT

    [ https://issues.apache.org/jira/browse/LUCENE-1306?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12605704#action_12605704
] 

Grant Ingersoll commented on LUCENE-1306:
-----------------------------------------

Note, also, that one could use the "flags" to indicate what the token is.  I know that's a
little up in the air just yet, but it does exist.  This would mean that no stripping of special
chars is required.

> CombinedNGramTokenFilter
> ------------------------
>
>                 Key: LUCENE-1306
>                 URL: https://issues.apache.org/jira/browse/LUCENE-1306
>             Project: Lucene - Java
>          Issue Type: New Feature
>          Components: contrib/analyzers
>            Reporter: Karl Wettin
>            Assignee: Karl Wettin
>            Priority: Trivial
>         Attachments: LUCENE-1306.txt
>
>
> Alternative NGram filter that produce tokens with composite prefix and suffix markers.
> {code:java}
> ts = new WhitespaceTokenizer(new StringReader("hello"));
> ts = new CombinedNGramTokenFilter(ts, 2, 2);
> assertNext(ts, "^h");
> assertNext(ts, "he");
> assertNext(ts, "el");
> assertNext(ts, "ll");
> assertNext(ts, "lo");
> assertNext(ts, "o$");
> assertNull(ts.next());
> {code}

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