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From "Rick Hillegas (JIRA)" <j...@apache.org>
Subject [jira] Commented: (DERBY-4491) The network client changes UDTs into Strings and returns their type as LONGVARBINARY.
Date Tue, 02 Mar 2010 16:57:27 GMT

    [ https://issues.apache.org/jira/browse/DERBY-4491?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12840236#action_12840236
] 

Rick Hillegas commented on DERBY-4491:
--------------------------------------

Thanks for catching this, Kristian. This may indicate that there is a missing compatibility
test case. I will re-run the compatibility tests after you check in this fix.

> The network client changes UDTs into Strings and returns their type as LONGVARBINARY.
> -------------------------------------------------------------------------------------
>
>                 Key: DERBY-4491
>                 URL: https://issues.apache.org/jira/browse/DERBY-4491
>             Project: Derby
>          Issue Type: Bug
>          Components: JDBC
>    Affects Versions: 10.0.2.0, 10.0.2.1, 10.1.1.0, 10.1.2.1, 10.1.3.1, 10.2.1.6, 10.2.2.0,
10.3.1.4, 10.3.2.1, 10.3.3.0, 10.4.1.3, 10.4.2.0, 10.5.1.1, 10.5.2.0, 10.5.3.0
>            Reporter: Rick Hillegas
>            Assignee: Rick Hillegas
>         Attachments: derby-4491-01-ab-networkTransport.diff, derby-4491-01-ad-networkTransport.diff,
derby-4491-02-aa-supportsUDTs.diff
>
>
> This is a pre-existing bug which seems to have been with Derby since the beginning. Some
of the columns in the system tables (e.g., SYS.SYSALIASES.ALIASINFO) contain objects. If you
select these columns:
> 1) In the embedded client you will get the correct results. You will get the objects
in these columns. In addition, the ResultSetMetaData for these columns will correctly report
that the columns have type JAVA_OBJECT and will give a reasonable type name (the class name
for the object in the column).
> 2) However, in the network client, you will get the wrong results. ResultSet.getObject()
will return Strings rather than the original objects. In addition, the ResultSetMetaData for
these columns will incorrectly report that their type is LONGVARBINARY.

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