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From "Steven Rowe (JIRA)" <j...@apache.org>
Subject [jira] Commented: (LUCENE-1435) CollationKeyFilter: convert tokens into CollationKeys encoded using IndexableBinaryStringTools
Date Mon, 03 Nov 2008 19:00:44 GMT

    [ https://issues.apache.org/jira/browse/LUCENE-1435?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12644780#action_12644780
] 

Steven Rowe commented on LUCENE-1435:
-------------------------------------

Robert Muir wrote:

bq. One alternative is that the ICU implementation has versioning specifically for this purpose.


I'll look into using RegexQuery as a model here (it enables use of either java.util.regex
or Jakarta Regexp, defaulting to java.util.regex), and try to add CollatorCapable/CollatorCapabilities,
so that ICU's Collator implementation will be usable.

> CollationKeyFilter: convert tokens into CollationKeys encoded using IndexableBinaryStringTools
> ----------------------------------------------------------------------------------------------
>
>                 Key: LUCENE-1435
>                 URL: https://issues.apache.org/jira/browse/LUCENE-1435
>             Project: Lucene - Java
>          Issue Type: New Feature
>    Affects Versions: 2.4
>            Reporter: Steven Rowe
>            Priority: Minor
>             Fix For: 2.9
>
>         Attachments: LUCENE-1435.patch
>
>
> Converts each token into its CollationKey using the provided collator, and then encodes
the CollationKey with IndexableBinaryStringTools, to allow it to be stored as an index term.
> This will allow for efficient range searches and Sorts over fields that need collation
for proper ordering.

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