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From "ASF GitHub Bot (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (PHOENIX-4237) Allow sorting on (Java) collation keys for non-English locales
Date Tue, 17 Oct 2017 20:23:00 GMT

    [ https://issues.apache.org/jira/browse/PHOENIX-4237?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16208269#comment-16208269
] 

ASF GitHub Bot commented on PHOENIX-4237:
-----------------------------------------

Github user snakhoda-sfdc commented on the issue:

    https://github.com/apache/phoenix/pull/275
  
    @JamesRTaylor thanks for the feedback and support! So we have the i18n-util jar on maven
now, but not the icu4j jars. Once the icu4j jars are published to maven, i18n-util will have
to change to upgrade its dependency to the new version. I'm hoping that change will be in
next week.
    
    Once that happens, I was thinking of creating a new PR that removes the outside code and
introduces the external dependency.


> Allow sorting on (Java) collation keys for non-English locales
> --------------------------------------------------------------
>
>                 Key: PHOENIX-4237
>                 URL: https://issues.apache.org/jira/browse/PHOENIX-4237
>             Project: Phoenix
>          Issue Type: Improvement
>            Reporter: Shehzaad Nakhoda
>             Fix For: 4.12.0
>
>
> Strings stored via Phoenix can be composed from a subset of the entire set of Unicode
characters. The natural sort order for strings for different languages often differs from
the order dictated by the binary representation of the characters of these strings. Java provides
the idea of a Collator which given an input string and a (language) locale can generate a
Collation Key which can then be used to compare strings in that natural order.
> Salesforce has recently open-sourced grammaticus. IBM has open-sourced ICU4J some time
ago. These technologies can be combined to provide a robust new Phoenix function that can
be used in an ORDER BY clause to sort strings according to the user's locale.



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