[jboss-user] [jBPM] - NullPointerException - on taskclient.complete

[Odelya Holiday]

Odelya Holiday [http://community.jboss.org/people/odelyaholiday] created the discussion

"NullPointerException - on taskclient.complete"

To view the discussion, visit: http://community.jboss.org/message/582570#582570

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Hi!

I am working on tomcat 6

When the application starts - I start the taskserver:


server = new MinaTaskServer(taskService);
Thread thread = new Thread(server);


When the user logs in to my application,  I start a taskclient like this:

TaskClient client = new TaskClient(new MinaTaskClientConnector("client 1", new MinaTaskClientHandler(
SystemEventListenerFactory.getSystemEventListener())));
boolean connected = client.connect("127.0.0.1", 9123);



I am using this taskclient in the code to start and complete it:

BlockingTaskOperationResponseHandler responseHandler = new BlockingTaskOperationResponseHandler();
taskClient.start(taskId, userName, responseHandler);
BlockingTaskOperationResponseHandler blockingTaskOperationResponseHandler = new BlockingTaskOperationResponseHandler();
taskClient.complete(taskId, userName, result, blockingTaskOperationResponseHandler);
 



However, once it passes the taskClient.complete I get the exception:
org.apache.mina.filter.codec.ProtocolEncoderException: java.lang.NullPointerException
     at org.apache.mina.filter.codec.ProtocolCodecFilter.filterWrite(ProtocolCodecFilter.java:313)
     at org.apache.mina.core.filterchain.DefaultIoFilterChain.callPreviousFilterWrite(DefaultIoFilterChain.java:506)
     at org.apache.mina.core.filterchain.DefaultIoFilterChain.access$1400(DefaultIoFilterChain.java:46)



What could be the problem?
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