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From "Kristian Waagan (JIRA)" <j...@apache.org>
Subject [jira] Resolved: (DERBY-3977) Clob.truncate with a value greater than the Clob length raises different exceptions in embedded and client driver
Date Mon, 05 Jan 2009 11:31:46 GMT

     [ https://issues.apache.org/jira/browse/DERBY-3977?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel

Kristian Waagan resolved DERBY-3977.

    Resolution: Fixed
    Derby Info: [Release Note Needed]  (was: [Release Note Needed, Patch Available])

Issue has been fixed.
Thanks for the feedback on the release notes, Knut Anders.

> Clob.truncate with a value greater than the Clob length raises different exceptions in
embedded and client driver
> -----------------------------------------------------------------------------------------------------------------
>                 Key: DERBY-3977
>                 URL: https://issues.apache.org/jira/browse/DERBY-3977
>             Project: Derby
>          Issue Type: Bug
>          Components: JDBC
>    Affects Versions:,,
>            Reporter: Kristian Waagan
>            Assignee: Kristian Waagan
>            Priority: Minor
>             Fix For:
>         Attachments: derby-3977-1a-change_emb_exception.diff, derby-3977-2a-error_message_typo_fix.diff,
derby-3977-2a-error_message_typo_fix.stat, releaseNote.html, releaseNote.html
> Calling Clob.truncate with a value that is greater then the Clob length raises different
SQLExceptions in the client and the embedded driver.
>  o Client: SQLState.BLOB_LENGTH_TOO_LONG - XJ079
>  o Embedded: SQLState.BLOB_POSITION_TOO_LARGE - XJ076
> I believe the fix is simple enough  - change one of the exceptions.
> Which one most closely describes the situation?
> A release note is needed for this fix.
> Also note the following from the Java API docs:
> "void truncate(long len)
>               throws SQLException
>     Truncates the CLOB value that this Clob designates to have a length of len characters.
>     Note: If the value specified for pos is greater then the length+1 of the CLOB value
then the behavior is undefined. Some JDBC drivers may throw a SQLException while other drivers
may support this operation.
> "
> This opens for a change of behavior as well.
> There seems to an inconsistency in the docs, possibly due to rephrasing - it references
both len and pos. The latter isn't used anywhere else in the JavaDoc for truncate.
> And what should the result of truncate(length+1) be?

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