[jira] [Commented] (LUCENE-5369) Add an UpperCaseFilter

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[jira] [Commented] (LUCENE-5369) Add an UpperCaseFilter

JIRA jira@apache.org

    [ https://issues.apache.org/jira/browse/LUCENE-5369?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13865911#comment-13865911 ]

Uwe Schindler commented on LUCENE-5369:
---------------------------------------

Yes Character.toUpperCase is fine and locale invariant.

> Add an UpperCaseFilter
> ----------------------
>
>                 Key: LUCENE-5369
>                 URL: https://issues.apache.org/jira/browse/LUCENE-5369
>             Project: Lucene - Core
>          Issue Type: New Feature
>            Reporter: Ryan McKinley
>            Assignee: Ryan McKinley
>            Priority: Minor
>         Attachments: LUCENE-5369-uppercase-filter.patch
>
>
> We should offer a standard way to force upper-case tokens.  I understand that lowercase is safer for general search quality because some uppercase characters can represent multiple lowercase ones.
> However, having upper-case tokens is often nice for faceting (consider normalizing to standard acronyms)



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Re: [jira] [Commented] (LUCENE-5369) Add an UpperCaseFilter

Ryan McKinley
fixing now... sorry


On Wed, Jan 8, 2014 at 1:28 PM, Uwe Schindler (JIRA) <[hidden email]> wrote:

    [ https://issues.apache.org/jira/browse/LUCENE-5369?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13865911#comment-13865911 ]

Uwe Schindler commented on LUCENE-5369:
---------------------------------------

Yes Character.toUpperCase is fine and locale invariant.

> Add an UpperCaseFilter
> ----------------------
>
>                 Key: LUCENE-5369
>                 URL: https://issues.apache.org/jira/browse/LUCENE-5369
>             Project: Lucene - Core
>          Issue Type: New Feature
>            Reporter: Ryan McKinley
>            Assignee: Ryan McKinley
>            Priority: Minor
>         Attachments: LUCENE-5369-uppercase-filter.patch
>
>
> We should offer a standard way to force upper-case tokens.  I understand that lowercase is safer for general search quality because some uppercase characters can represent multiple lowercase ones.
> However, having upper-case tokens is often nice for faceting (consider normalizing to standard acronyms)



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