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From "Kathey Marsden (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (DERBY-5236) Client driver silently truncates strings that exceed 32KB
Date Wed, 24 Aug 2011 17:18:29 GMT

    [ https://issues.apache.org/jira/browse/DERBY-5236?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13090350#comment-13090350
] 

Kathey Marsden commented on DERBY-5236:
---------------------------------------

Knut said So the current state is:

0-65514 bytes: OK
65515 - 65535 bytes: StringIndexOutOfBoundsException
>=65536: Truncated result 

Is that the current state of trunk or the current state of the patch? It seems it would be
good to get these improvements into 10.8.2 for the release as the extension to 65514 would
be a good improvement even if the StringIndexOutOfBounds is not understood.


> Client driver silently truncates strings that exceed 32KB
> ---------------------------------------------------------
>
>                 Key: DERBY-5236
>                 URL: https://issues.apache.org/jira/browse/DERBY-5236
>             Project: Derby
>          Issue Type: Bug
>          Components: Network Client
>    Affects Versions: 10.8.1.2
>            Reporter: Knut Anders Hatlen
>            Assignee: Knut Anders Hatlen
>         Attachments: repro.diff, write-full-string.diff
>
>
> Can be seen with this JUnit test case that retrieves a VARCHAR value with 20000 characters.
With the client driver, the string is truncated to 10900 characters (32700 bytes when encoded
in UTF-8).
>     public void testLongColumn() throws SQLException {
>         PreparedStatement ps = prepareStatement(
>                 "values cast(? as varchar(20000))");
>         char[] chars = new char[20000];
>         Arrays.fill(chars, '\u4e10');
>         String str = new String(chars);
>         ps.setString(1, str);
>         JDBC.assertSingleValueResultSet(ps.executeQuery(), str);
>     }

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