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From "Michael Ludwig (JIRA)" <j...@apache.org>
Subject [jira] Commented: (SOLR-1204) Enhance SpellingQueryConverter to handle UTF-8 instead of ASCII only
Date Thu, 18 Jun 2009 15:52:07 GMT

    [ https://issues.apache.org/jira/browse/SOLR-1204?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12721323#action_12721323
] 

Michael Ludwig commented on SOLR-1204:
--------------------------------------

The patch has been ready for a week now, but before supplying it, I'd like to understand what
is the rationale behind treating a sequence of digits - \d+ - as a separate token in the original
regular expression - (?:(?!(\w+:|\d+)))\w+ to be found in SpellingQueryConverter.java?

> Enhance SpellingQueryConverter to handle UTF-8 instead of ASCII only
> --------------------------------------------------------------------
>
>                 Key: SOLR-1204
>                 URL: https://issues.apache.org/jira/browse/SOLR-1204
>             Project: Solr
>          Issue Type: Improvement
>          Components: spellchecker
>    Affects Versions: 1.3
>            Reporter: Michael Ludwig
>            Assignee: Shalin Shekhar Mangar
>            Priority: Trivial
>             Fix For: 1.4
>
>         Attachments: SpellingQueryConverter.java.diff, SpellingQueryConverter.java.diff
>
>
> Solr - User - SpellCheckComponent: queryAnalyzerFieldType
> http://www.nabble.com/SpellCheckComponent%3A-queryAnalyzerFieldType-td23870668.html
> In the above thread, it was suggested to extend the SpellingQueryConverter to cover the
full UTF-8 range instead of handling US-ASCII only. This might be as simple as changing the
regular expression used to tokenize the input string to accept a sequence of one or more Unicode
letters ( \p{L}+ ) instead of a sequence of one or more word characters ( \w+ ).
> See http://java.sun.com/j2se/1.4.2/docs/api/java/util/regex/Pattern.html for Java regular
expression reference.

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