[jira] Commented: (LUCENE-2399) Add support for ICU's Normalizer2

["Uwe Schindler (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/LUCENE-2399?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12858104#action_12858104 ] 

Uwe Schindler commented on LUCENE-2399:
---------------------------------------

Hurra! You used the StringBuilder as buffer to not create a new String instance each time and only need to copy the buffer. This could also be a good trick for the PatternReplaceFilter from Solr.

bq. i made this filter final, to avoid a ticket from the policeman. 

How did you get the filter through the assert statement without final? Strange...

> Add support for ICU's Normalizer2
> ---------------------------------
>
>                 Key: LUCENE-2399
>                 URL: https://issues.apache.org/jira/browse/LUCENE-2399
>             Project: Lucene - Java
>          Issue Type: New Feature
>          Components: contrib/*
>    Affects Versions: 3.1
>            Reporter: Robert Muir
>            Assignee: Robert Muir
>             Fix For: 3.1
>
>         Attachments: LUCENE-2399.patch, LUCENE-2399.patch
>
>
> While there are separate Case Folding, Normalization, and Ignorable-removal filters in LUCENE-1488,
> the new ICU Normalizer2 API does this all at once with nfkc_cf (based on the new NFKC_Casefold property in Unicode).
> This is great, because it provides a ton of unicode functionality that is really needed.
> And the new Normalizer2 API takes CharSequence and writes to Appendable...

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