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From "Steven Rowe (JIRA)" <j...@apache.org>
Subject [jira] Commented: (LUCENE-1279) RangeQuery and RangeFilter should use collation to check for range inclusion
Date Sat, 01 Nov 2008 05:03:44 GMT

    [ https://issues.apache.org/jira/browse/LUCENE-1279?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12644492#action_12644492
] 

Steven Rowe commented on LUCENE-1279:
-------------------------------------

Hoss wrote:

bq. 4) when i first saw the thread that spawned this issue, my first reaction was to wonder
if it would make sense to start allowing a Collator to be specified when indexing, and to
use the raw bytes from the CollationKey as the indexed value - I haven't thought it through
very hard, but i wonder if that would be feasible (it seems like it would certainly faster
at query time, since it would allow more traditional term skipping.

See LUCENE-1435, which is an implementation of this idea.

> RangeQuery and RangeFilter should use collation to check for range inclusion
> ----------------------------------------------------------------------------
>
>                 Key: LUCENE-1279
>                 URL: https://issues.apache.org/jira/browse/LUCENE-1279
>             Project: Lucene - Java
>          Issue Type: Improvement
>          Components: Search
>    Affects Versions: 2.3.1
>            Reporter: Steven Rowe
>            Assignee: Grant Ingersoll
>            Priority: Minor
>             Fix For: 2.4
>
>         Attachments: LUCENE-1279.patch, LUCENE-1279.patch, LUCENE-1279.patch, LUCENE-1279.patch
>
>
> See [this java-user discussion|http://www.nabble.com/lucene-farsi-problem-td16977096.html]
of problems caused by Unicode code-point comparison, instead of collation, in RangeQuery.
> RangeQuery could take in a Locale via a setter, which could be used with a java.text.Collator
and/or CollationKey's, to handle ranges for languages which have alphabet orderings different
from those in Unicode.

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