Lightweight JMS

[kiwisurfer <uk...@yahoo.co.uk>]

I have managed to get a simple ServiceMix config sort of working:

JMS -> NMR-> Bean

My bean is hosted by the servicemix-bean component, and implements the
MessageExchangeListener interface, and also uses the @Resource annotations
to store the DeliveryChannel instance. It is deployed as part of a SA/SU,
and I can see the endpoints, queues and SA/SUs registered via MC4J.


public class CatalogServiceEngineImpl implements MessageExchangeListener {

	private static final Log log =
LogFactory.getLog(CatalogServiceEngineImpl.class);
	private ExternalCatalog catalogProvider;
	
	@Resource
	private DeliveryChannel channel;	

        public void onMessageExchange(MessageExchange exchange) throws
MessagingException 
	{
		if (exchange.getStatus() == ExchangeStatus.ACTIVE) 
		{
			log.info("Received message " + exchange);
			NormalizedMessage message = exchange.getMessage("in");
			ExchangeStatus outgoingStatus = ExchangeStatus.DONE;
			
			log.info("About to get operation id ");
			Integer operationId = (Integer) message.getProperty("operationId");
			log.info("Checking operation Id ");
			
			if (operationId != null)
			{
				log.info("OperationId= " + operationId);
			}
			
			exchange.setStatus(outgoingStatus);
			channel.send(exchange);
		}
	}
}
	
I am trying to invoke the Bean service through a JMSClient (taken from 
loans-broker-bpel), with a simple message that has only one property called
operationId.

However, i get the following stack trace:

ERROR - MultiplexingConsumerProcessor  - Error while handling jms message
java.lang.NullPointerException
        at
org.apache.servicemix.jms.AbstractJmsProcessor.toNMS(AbstractJmsProce
ssor.java:172)
        at
org.apache.servicemix.jms.multiplexing.MultiplexingConsumerProcessor.
access$300(MultiplexingConsumerProcessor.java:40)
        at
org.apache.servicemix.jms.multiplexing.MultiplexingConsumerProcessor$
1.run(MultiplexingConsumerProcessor.java:93)
        at
edu.emory.mathcs.backport.java.util.concurrent.ThreadPoolExecutor$Wor
ker.runTask(ThreadPoolExecutor.java:665)
        at
edu.emory.mathcs.backport.java.util.concurrent.ThreadPoolExecutor$Wor
ker.run(ThreadPoolExecutor.java:690)
        at java.lang.Thread.run(Thread.java:595)

Any ideas?

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Re: Lightweight JMS

[kiwisurfer <uk...@yahoo.co.uk>]

Found the error. It appears that the example code from the loans-broker-bpel
JMSClient is missing the following on the request string:

String request ="<?xml version='1.0' encoding='UTF-8'?>String request =
....... "


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