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MQSeries.net Forum Index » WebSphere Message Broker (ACE) Support » Convert BLOB to String in JavaCompute Node

Convert BLOB to String in JavaCompute Node

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kayhansefat

Posted: Thu Mar 08, 2007 2:21 am Post subject: Convert BLOB to String in JavaCompute Node

Acolyte

Joined: 18 Oct 2006
Posts: 65

I am trying to convert the BLOB data in an incoming message to a String within the Java Compute Node. I create the incoming message on a previous flow and attach the string as a byte array (the "data" variable is the String to be inserted):

Code:

byte[] byteData = data.getBytes();
MbElement blobData = blob.createElementAsFirstChild(MbElement.TYPE_NAME_VALUE, "BLOB", byteData);

That all seems to work fine but using the following code to get the String out from the byte array comes up with a cast exception:

Code:

MbElement inRoot = inMessage.getRootElement();
MbElement blob = inRoot.getLastChild();
MbElement blobData = blob.getLastChild();
byte[] dataByteArray = (byte[])(blobData.getValue());
String dataString = new String(dataByteArray);

The message gets parsed out of the Failure terminal of the JavaCompute Node, I am pretty sure it is caused by line 4 of the code above.

I am not sure this is the best way to do it, any ideas?

au@kosa

Posted: Thu Mar 08, 2007 3:05 am Post subject:

Centurion

Joined: 04 Jan 2007
Posts: 103
Location: pune

Check the below url

http://www.mqseries.net/phpBB2/viewtopic.php?t=33857&highlight=
_________________
Regards,
au@kosa
IBM Certified SOA Solution Designer/Associate

kayhansefat

Posted: Thu Mar 08, 2007 7:22 am Post subject:

Acolyte

Joined: 18 Oct 2006
Posts: 65

Ok thanks but my code was correct in the casting aspect, the problem was that the "MbElement blobData = blob.getLastChild()" did not contain the last child of the BLOB node. It had to be replaced with:

Code:

MbElement blobData = blob.getLastChild().getNextSibling();

Getting the last child, then its next sibling to me doesnt make much sense but there we go!

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