[axis2 - 1.0] blocking dual client help

[Diego]

Hi everybody,

I get this exception:

Exception in thread "main" java.lang.NullPointerException
        at 
org.apache.axis2.description.OutInAxisOperationClient.execute(OutInAxisOperation.java:260)
        at 
org.astrodas.ws.peer.AstrodasPeerStub.insertMappingAnnotations(AstrodasPeerStub.java:123)
        at 
org.astrodas.ws.peer.AstrodasPeerProxy.insertMappingAnnotations(AstrodasPeerProxy.java:36)
        at org.astrodas.test.Populate.populateLocal(Populate.java:239)
        at org.astrodas.test.Populate.main(Populate.java:350)


when trying to invoke a blocking dual client with the following code, 
that I have modified from the generated stub.

Thanks a lot for any help!

Diego


public org.astrodas.ws.model.InsertMappingAnnotationsResponseDocument 
insertMappingAnnotations(
    org.astrodas.ws.model.InsertMappingAnnotationsDocument param4)
    throws java.rmi.RemoteException {
    try {
        org.apache.axis2.client.OperationClient _operationClient = 
_serviceClient.createClient(_operations[0].getName());

_operationClient.getOptions().setAction("insertMappingAnnotations");

_operationClient.getOptions().setExceptionToBeThrownOnSOAPFault(true);

        // Dual client

_operationClient.getOptions().setTransportInProtocol(Constants.TRANSPORT_HTTP);
        _operationClient.getOptions().setUseSeparateListener(true);
        _operationClient.getOptions().setAction("urn:echo");
        _serviceClient.engageModule(new 
javax.xml.namespace.QName(Constants.MODULE_ADDRESSING));

        // create SOAP envelope with that payload
        org.apache.axiom.soap.SOAPEnvelope env = null;

        //Style is Doc.
        env = toEnvelope(getFactory(_operationClient.getOptions()
                                                    .getSoapVersionURI()),
                param4,
                optimizeContent(
                    new javax.xml.namespace.QName("",
                        "insertMappingAnnotations")));

        // create message context with that soap envelope
        org.apache.axis2.context.MessageContext _messageContext = new 
org.apache.axis2.context.MessageContext();
        _messageContext.setEnvelope(env);

        // add the message contxt to the operation client
        _operationClient.addMessageContext(_messageContext);

        //execute the operation client
        _operationClient.execute(true);

        org.apache.axis2.context.MessageContext _returnMessageContext = 
_operationClient.getMessageContext(org.apache.axis2.wsdl.WSDLConstants.MESSAGE_LABEL_IN_VALUE);
        org.apache.axiom.soap.SOAPEnvelope _returnEnv = 
_returnMessageContext.getEnvelope();

        java.lang.Object object = fromOM(getElement(_returnEnv, 
"document"),

org.astrodas.ws.model.InsertMappingAnnotationsResponseDocument.class,
                getEnvelopeNamespaces(_returnEnv));

_messageContext.getTransportOut().getSender().cleanup(_messageContext);

        return 
(org.astrodas.ws.model.InsertMappingAnnotationsResponseDocument) object;
    } catch (org.apache.axis2.AxisFault f) {
        org.apache.axiom.om.OMElement faultElt = f.getDetail();

        if (faultElt != null) {
          ...
        } 


    }
}