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Date: Mon, 28 Feb 2011 18:27:37 +0000 (UTC)
From: "Robert Muir (JIRA)" <jira@apache.org>
To: dev@lucene.apache.org
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Subject: [jira] Updated: (LUCENE-2942) toString() methods on
 term/queries/etc are wrong: assume utf-8 encoded bytes.
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     [ https://issues.apache.org/jira/browse/LUCENE-2942?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Robert Muir updated LUCENE-2942:
--------------------------------

    Attachment: LUCENE-2942.patch

here's a patch, i only converted the really safe stuff over: toString()s and assertions and some tools in contrib/misc such as HighFreqTerms.

> toString() methods on term/queries/etc are wrong: assume utf-8 encoded bytes.
> -----------------------------------------------------------------------------
>
>                 Key: LUCENE-2942
>                 URL: https://issues.apache.org/jira/browse/LUCENE-2942
>             Project: Lucene - Java
>          Issue Type: Bug
>    Affects Versions: 4.0
>            Reporter: Robert Muir
>         Attachments: LUCENE-2942.patch
>
>
> In Lucene's trunk, a Term is just a Bytesref.
> In a lot of cases this is a UTF-8 encoded string, but in some cases its not (e.g. collation fields).
> The problem is that the toString methods all currently call utf8ToString().
> This is wrong, though from a practical point of view i think just printing the bytes won't be very helpful for debugging most cases where the bytes really are utf-8 encoded.
> So i think in these cases we should use the following technique: if the bytes are a valid utf-8 sequence, use BytesRef.utf8tostring(), otherwise just print the bytes: BytesRef.toString()
> its no problem for performance because toString is only for debugging anyway.

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