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From "Craig Russell (JIRA)" <derby-...@db.apache.org>
Subject [jira] Updated: (DERBY-1516) Inconsistent behavior for getBytes and getSubString for embedded versus network
Date Sun, 16 Jul 2006 20:12:14 GMT
     [ http://issues.apache.org/jira/browse/DERBY-1516?page=all ]

Craig Russell updated DERBY-1516:
---------------------------------

    Attachment: DERBY-1516.patch

The attached patch is against Derby 10.1. A similar patch should work for the current code
base.

> Inconsistent behavior for getBytes and getSubString for embedded versus network
> -------------------------------------------------------------------------------
>
>                 Key: DERBY-1516
>                 URL: http://issues.apache.org/jira/browse/DERBY-1516
>             Project: Derby
>          Issue Type: Bug
>            Reporter: Craig Russell
>            Priority: Minor
>         Attachments: DERBY-1516.patch
>
>
> org.apache.derby.client.am.Clob.getSubString(pos, length) and org.apache.derby.client.am.Blob.getBytes(pos,
length) check the length for less than zero. 
>             if ((pos <= 0) || (length < 0)) {
>                 throw new SqlException(agent_.logWriter_, "Invalid position " + pos +
" or length " + length);
> But org.apache.derby.impl.jdbc.EmbedClob(pos, length) and org.apache.derby.impl.jdbc.EmbedBlob(pos,
length) check the length for less than or equal to zero.
>        if (length <= 0)
>             throw Util.generateCsSQLException(
>                 SQLState.BLOB_NONPOSITIVE_LENGTH, new Integer(length));
> The specification does not disallow length of zero, so zero length should be allowed.
I believe that the implementation in org.apache.derby.client.am is correct, and the implementation
in org.apache.derby.impl.jdbc is incorrect. 

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