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From "Michael McCandless (JIRA)" <j...@apache.org>
Subject [jira] Commented: (LUCENE-2094) Prepare CharArraySet for Unicode 4.0
Date Mon, 30 Nov 2009 22:45:20 GMT

    [ https://issues.apache.org/jira/browse/LUCENE-2094?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12783913#action_12783913
] 

Michael McCandless commented on LUCENE-2094:
--------------------------------------------

I personally don't like that StopFilter can discard the holes.  It
loses information, that you can never get back, once indexed.

That said, it's clearly not black & white -- enough people feel it's a
feature (not a bug), and should be preserved, so I think we should
preserve it as a standalone option.

But I think we should keep the default as "don't discard the holes".

{quote}
Hello, my proposal is still the same:
  * we use Version to control StopFilter's default behavior
  * we deprecate the static getDefault... method and the setter
  * we add an explicit, even "expert" if you want, ctor that still uses Version, but also
has this boolean param.
{quote}

I think this is a good approach!


> Prepare CharArraySet for Unicode 4.0
> ------------------------------------
>
>                 Key: LUCENE-2094
>                 URL: https://issues.apache.org/jira/browse/LUCENE-2094
>             Project: Lucene - Java
>          Issue Type: Bug
>          Components: Analysis
>    Affects Versions: 3.0
>            Reporter: Simon Willnauer
>            Assignee: Uwe Schindler
>             Fix For: 3.1
>
>         Attachments: LUCENE-2094.patch, LUCENE-2094.patch, LUCENE-2094.patch, LUCENE-2094.patch,
LUCENE-2094.patch, LUCENE-2094.patch, LUCENE-2094.txt, LUCENE-2094.txt, LUCENE-2094.txt
>
>
> CharArraySet does lowercaseing if created with the correspondent flag. This causes that
 String / char[] with uncode 4 chars which are in the set can not be retrieved in "ignorecase"
mode.

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