[jira] Commented: (DERBY-562) Derby incorrectly throws Exception when streaming to BLOB field

["Sunitha Kambhampati (JIRA)" <de...@db.apache.org>]

    [ http://issues.apache.org/jira/browse/DERBY-562?page=comments#action_12331393 ] 

Sunitha Kambhampati commented on DERBY-562:
-------------------------------------------

I merged this fix to 10.1 codeline. All tests passed ok with jdk142/win2k.

The merge command is 
svn merge -r 292829:292830 https://svn.apache.org/repos/asf/db/derby/code/trunk

I would like this to go in 10.1. I'd appreciate if someone could commit this.  Thanks.

> Derby incorrectly throws Exception when streaming to BLOB field
> ---------------------------------------------------------------
>
>          Key: DERBY-562
>          URL: http://issues.apache.org/jira/browse/DERBY-562
>      Project: Derby
>         Type: Bug
>     Versions: 10.1.1.0
>     Reporter: Holger Rehn
>  Attachments: Derby562.diff.txt, Derby562.stat.txt
>
> Derby incorrectly throws an Exception when streaming to a BLOB in case the used InputStream actually could provide more data than I want to write to the BLOB field.
>    PreparedStatement statement = connection.prepareStatement( "insert into FOO(ID,DATA) values(?, ?)" );
>    statement.setLong( 1, someValue );
>    statement.setBinaryStream( 2, someInputStream, amountOfData ); // amountOfData < amount of data readable from someInputStream
>    statement.executeUpdate();
> executeUpdate() throws an SQLException with detail message: "Input stream held less data than requested length.: java.io.IOException"
> In my case this was first caused by writing an internal buffer (byte[]) to the data base through a ByteArrayInputStream while not limiting the ByteArrayInputStream to the useful data within the buffer but setting amountOfData to the number of useful bytes. So the 2 problems are:
> 1. the error text is definitly incorrect since I provide more data than neccessary, not less
> 2. in my opinion this shouldn't throw an exception at all (I checked against 4 other DBMS, all of them worked as intended)

-- 
This message is automatically generated by JIRA.
-
If you think it was sent incorrectly contact one of the administrators:
   http://issues.apache.org/jira/secure/Administrators.jspa
-
For more information on JIRA, see:
   http://www.atlassian.com/software/jira