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From "Knut Anders Hatlen (JIRA)" <j...@apache.org>
Subject [jira] Commented: (DERBY-3991) Clob.truncate(0) throws exception
Date Mon, 20 Apr 2009 07:50:47 GMT

    [ https://issues.apache.org/jira/browse/DERBY-3991?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12700687#action_12700687
] 

Knut Anders Hatlen commented on DERBY-3991:
-------------------------------------------

Do we actually need to mention that truncate(0) no longer throws an exception? We don't normally
write release notes for that kind of changes ("something that didn't work now works"). Mentioning
the changed SQLState is sufficient, in my opinion.

> Clob.truncate(0) throws exception
> ---------------------------------
>
>                 Key: DERBY-3991
>                 URL: https://issues.apache.org/jira/browse/DERBY-3991
>             Project: Derby
>          Issue Type: Bug
>          Components: JDBC
>    Affects Versions: 10.3.3.1, 10.4.2.1, 10.5.1.0, 10.6.0.0
>            Reporter: Kristian Waagan
>            Assignee: Yun Lee
>            Priority: Minor
>             Fix For: 10.6.0.0
>
>         Attachments: derby-3991-1a-ClobTruncateZeroTest.diff, derby-3991-2a.diff, derby-3991-3.diff,
derby-3991-3.releaseNote.html, derby-3991-3.stat, releaseNote.html
>
>
> Truncating a Clob to zero length is allowed according to the JDBC specification, which
says the following about the len argument (in the @throws tag):
> "SQLException - if there is an error accessing the CLOB value or if len is less than
0 "
> Derby throws an exception if zero is passed to truncate.
> A quick inspection of the code suggests that truncating a Clob to the empty string is
easy to support.

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