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From "Robert Muir (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (LUCENE-4254) ICUCollationKeyAnalyzer fail to tokenize Thai word
Date Wed, 25 Jul 2012 13:52:35 GMT

    [ https://issues.apache.org/jira/browse/LUCENE-4254?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13422271#comment-13422271
] 

Robert Muir commented on LUCENE-4254:
-------------------------------------

{quote}
If a field that i required must be both tokenized and using ICUCollationKeyAnalyzer, do i
have to use method Field.setTokenStream() only
{quote}

If you have a field "title" that you want tokenized (for search) but collated (for sort),
I think its best
to create "title" and "title_sort". 

In general sort really only works if the field has a single value, so you dont want to mix
the two. You can
then optimize the sort field: disable storing (Field.Store.NO) for "title_sort" since its
already stored
in "title", and usually also omitNorms(), and set the index options to DOCS_ONLY.

                
> ICUCollationKeyAnalyzer fail to tokenize Thai word
> --------------------------------------------------
>
>                 Key: LUCENE-4254
>                 URL: https://issues.apache.org/jira/browse/LUCENE-4254
>             Project: Lucene - Core
>          Issue Type: Bug
>          Components: modules/analysis
>    Affects Versions: Realtime Branch
>         Environment: Windows 7 SP1.
> Java 1.7.0-b147
>            Reporter: Nattapong Sirilappanich
>            Assignee: Uwe Schindler
>
> Current implementation is:
> KeywordTokenizer tokenizer = new KeywordTokenizer(factory, reader, KeywordTokenizer.DEFAULT_BUFFER_SIZE);
> return new TokenStreamComponents(tokenizer, tokenizer);
> I tried change tokenizer from KeywordTokenizer to ICUTokenizer. It return a proper tokenized
word.

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