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From "Robert Muir (JIRA)" <j...@apache.org>
Subject [jira] Issue Comment Edited: (LUCENE-2019) map unicode process-internal codepoints to replacement character
Date Fri, 30 Oct 2009 22:31:59 GMT

    [ https://issues.apache.org/jira/browse/LUCENE-2019?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12772128#action_12772128
] 

Robert Muir edited comment on LUCENE-2019 at 10/30/09 10:30 PM:
----------------------------------------------------------------

Yonik, no. this is how i see it.

process-internal means just that, internal to processing. 
So if I want to use U+FDDF in some lucene process, say as a syllable delimiter or something
like that, i should not have to worry about it being stored in a *portable index* as an abstract
character (inside some term text)

again this is my interpretation, so if you guys disagree, please mark the issue as not fix,
but i enjoy the discussion.

<edit addition>

here is an example use case, perhaps i want to make a Query that needs to do some fuzzy matching
or something crazy for a difficult language.
i should be able to internally use any of these process-internal codepoints as delimiters
in my processing (process-internal)
without worrying that they will be in the Term text from TermEnum. 

      was (Author: rcmuir):
    Yonik, no. this is how i see it.

process-internal means just that, internal to processing. 
So if I want to use U+FDDF in some lucene process, say as a syllable delimiter or something
like that, i should not have to worry about it being stored in a *portable index* as an abstract
character (inside some term text)

again this is my interpretation, so if you guys disagree, please mark the issue as not fix,
but i enjoy the discussion.

  
> map unicode process-internal codepoints to replacement character
> ----------------------------------------------------------------
>
>                 Key: LUCENE-2019
>                 URL: https://issues.apache.org/jira/browse/LUCENE-2019
>             Project: Lucene - Java
>          Issue Type: Improvement
>          Components: Index
>            Reporter: Robert Muir
>            Priority: Minor
>         Attachments: LUCENE-2019.patch
>
>
> A spinoff from LUCENE-2016.
> There are several process-internal codepoints in unicode, we should not store these in
the index.
> Instead they should be mapped to replacement character (U+FFFD), so they can be used
process-internally.
> An example of this is how Lucene Java currently uses U+FFFF process-internally, it can't
be in the index or will cause problems. 

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