Examples of org.apache.axis2.engine.MessageReceiver

org.apache.axis2.engine.MessageReceiver
An instance of MessageReceiver can be setup to receive messages. The application logic has no impact on the Axis Engine iself. It is upto the application logic to do whatever it needs. For e.g. the MessageReceiver can handle a message, send a response back and/or send other messages.

            // setting the mep of the operation
            // loading the message recivers
            OMElement receiverElement = operation.getFirstChildWithName(new QName(TAG_MESSAGE_RECEIVER));


            if (receiverElement != null) {
                MessageReceiver messageReceiver =
                        loadMessageReceiver(module.getModuleClassLoader(), receiverElement);


                op_descrip.setMessageReceiver(messageReceiver);
            } else {


                // setting default message receiver
                MessageReceiver msgReceiver = loadDefaultMessageReceiver(mepURL, null);


                op_descrip.setMessageReceiver(msgReceiver);
            }


            // Process Module Refs

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                    axisOp.setMessageExchangePattern(WSDL2Constants.MEP_URI_IN_ONLY);
                } else {
                    axisOp.setMessageExchangePattern(WSDL2Constants.MEP_URI_IN_OUT);
                }


                MessageReceiver msgrec = null;
                if (op.isNonBlocking()) {
                    msgrec = new Axis2ServiceInMessageReceiver(this, op);
                } else {
                    msgrec = new Axis2ServiceInOutSyncMessageReceiver(this, op);
                }

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                // client. Should / would be ignored by any transport other than
                // nhttp. For example, JMS would not send a reply message for one-way
                // operations.
                MessageContext outMsgCtx =
                    (MessageContext) context.getAttribute(OUTGOING_MESSAGE_CONTEXT);
                MessageReceiver mr = outMsgCtx.getAxisOperation().getMessageReceiver();


                try {
                    MessageContext responseMsgCtx = outMsgCtx.getOperationContext().
                        getMessageContext(WSDL2Constants.MESSAGE_LABEL_IN);
                    if (responseMsgCtx == null) {
                        // to support Sandesha.. however, this means that we received a 202 accepted
                        // for an out-only , for which we do not need a dummy message anyway
                        return;
                    }
                    responseMsgCtx.setServerSide(true);
                    responseMsgCtx.setDoingREST(outMsgCtx.isDoingREST());
                    responseMsgCtx.setProperty(MessageContext.TRANSPORT_IN,
                        outMsgCtx.getProperty(MessageContext.TRANSPORT_IN));
                    responseMsgCtx.setTransportIn(outMsgCtx.getTransportIn());
                    responseMsgCtx.setTransportOut(outMsgCtx.getTransportOut());


                    responseMsgCtx.setAxisMessage(outMsgCtx.getAxisOperation().
                        getMessage(WSDLConstants.MESSAGE_LABEL_IN_VALUE));
                    responseMsgCtx.setOperationContext(outMsgCtx.getOperationContext());
                    responseMsgCtx.setConfigurationContext(outMsgCtx.getConfigurationContext());
                    responseMsgCtx.setTo(null);


                    if (!outMsgCtx.isDoingREST() && !outMsgCtx.isSOAP11()) {
                        responseMsgCtx.setEnvelope(new SOAP12Factory().getDefaultEnvelope());
                    } else {
                        responseMsgCtx.setEnvelope(new SOAP11Factory().getDefaultEnvelope());
                    }
                    responseMsgCtx.setProperty(AddressingConstants.DISABLE_ADDRESSING_FOR_OUT_MESSAGES, Boolean.TRUE);
                    responseMsgCtx.setProperty(NhttpConstants.SC_ACCEPTED, Boolean.TRUE);
                    mr.receive(responseMsgCtx);


                } catch (org.apache.axis2.AxisFault af) {
                    log.error("Unable to report back 202 Accepted state to the message receiver", af);
                }

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                // client. Should / would be ignored by any transport other than
                // nhttp. For example, JMS would not send a reply message for one-way
                // operations.
                MessageContext outMsgCtx =
                    (MessageContext) context.getAttribute(OUTGOING_MESSAGE_CONTEXT);
                MessageReceiver mr = outMsgCtx.getAxisOperation().getMessageReceiver();


                try {
                    MessageContext responseMsgCtx = outMsgCtx.getOperationContext().
                        getMessageContext(WSDL2Constants.MESSAGE_LABEL_IN);
                    if (responseMsgCtx == null) {
                        // to support Sandesha.. however, this means that we received a 202 accepted
                        // for an out-only , for which we do not need a dummy message anyway
                        return;
                    }
                    responseMsgCtx.setServerSide(true);
                    responseMsgCtx.setDoingREST(outMsgCtx.isDoingREST());
                    responseMsgCtx.setProperty(MessageContext.TRANSPORT_IN,
                        outMsgCtx.getProperty(MessageContext.TRANSPORT_IN));
                    responseMsgCtx.setTransportIn(outMsgCtx.getTransportIn());
                    responseMsgCtx.setTransportOut(outMsgCtx.getTransportOut());


                    responseMsgCtx.setAxisMessage(outMsgCtx.getAxisOperation().
                        getMessage(WSDLConstants.MESSAGE_LABEL_IN_VALUE));
                    responseMsgCtx.setOperationContext(outMsgCtx.getOperationContext());
                    responseMsgCtx.setConfigurationContext(outMsgCtx.getConfigurationContext());
                    responseMsgCtx.setTo(null);


                    responseMsgCtx.setEnvelope(
                        ((SOAPFactory)outMsgCtx.getEnvelope().getOMFactory()).getDefaultEnvelope());
                    responseMsgCtx.setProperty(AddressingConstants.DISABLE_ADDRESSING_FOR_OUT_MESSAGES, Boolean.TRUE);
                    responseMsgCtx.setProperty(NhttpConstants.SC_ACCEPTED, Boolean.TRUE);
                    mr.receive(responseMsgCtx);


                } catch (org.apache.axis2.AxisFault af) {
                    log.error("Unable to report back 202 Accepted state to the message receiver", af);
                }

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            IllegalAccessException,
            AxisFault {
        HashMap messageReciverMap = new HashMap();
        Class inOnlyMessageReceiver = Loader.loadClass(
                "org.apache.axis2.rpc.receivers.RPCInOnlyMessageReceiver");
        MessageReceiver messageReceiver =
                (MessageReceiver) inOnlyMessageReceiver.newInstance();
        messageReciverMap.put( WSDL2Constants.MEP_URI_IN_ONLY,
                                        messageReceiver);
        Class inoutMessageReceiver = Loader.loadClass(
                "org.apache.axis2.rpc.receivers.RPCMessageReceiver");
        MessageReceiver inOutmessageReceiver =
                (MessageReceiver) inoutMessageReceiver.newInstance();
        messageReciverMap.put(WSDL2Constants.MEP_URI_IN_OUT,
                                        inOutmessageReceiver);
        messageReciverMap.put(WSDL2Constants.MEP_URI_ROBUST_IN_ONLY,
                                                      inOutmessageReceiver);

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                    if (WSDLConstants.WSDL20_2006Constants.MEP_URI_IN_ONLY.equals(MEP)
                            || WSDLConstants.WSDL20_2004_Constants.MEP_URI_IN_ONLY.equals(MEP)
                            || WSDL2Constants.MEP_URI_IN_ONLY.equals(MEP)) {
                        Class inOnlyMessageReceiver = Loader.loadClass(
                                "org.apache.axis2.rpc.receivers.RPCInOnlyMessageReceiver");
                        MessageReceiver messageReceiver =
                                (MessageReceiver) inOnlyMessageReceiver.newInstance();
                        operation.setMessageReceiver(messageReceiver);
                    } else {
                        Class inoutMessageReceiver = Loader.loadClass(
                                "org.apache.axis2.rpc.receivers.RPCMessageReceiver");
                        MessageReceiver inOutmessageReceiver =
                                (MessageReceiver) inoutMessageReceiver.newInstance();
                        operation.setMessageReceiver(inOutmessageReceiver);
                    }
                } catch (ClassNotFoundException e) {
                    log.error(e.getMessage(), e);

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     *                can be null
     * @param service :
     *                This can be null <code>AxisService</code>
     */
    protected MessageReceiver loadDefaultMessageReceiver(String mepURL, AxisService service) {
        MessageReceiver messageReceiver;
        if (mepURL == null) {
            mepURL = WSDL2Constants.MEP_URI_IN_OUT;
        }
        if (service != null) {
            messageReceiver = service.getMessageReceiver(mepURL);

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        Iterator msgReceivers = messageReceivers.getChildrenWithName(new QName(
                TAG_MESSAGE_RECEIVER));
        while (msgReceivers.hasNext()) {
            OMElement msgReceiver = (OMElement) msgReceivers.next();
            final OMElement tempMsgReceiver = msgReceiver;
            MessageReceiver receiver = null;
            try {
                receiver = (MessageReceiver) org.apache.axis2.java.security.AccessController
                        .doPrivileged(new PrivilegedExceptionAction() {
                            public Object run()
                                    throws org.apache.axis2.deployment.DeploymentException {

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        HashMap meps = new HashMap();
        Iterator iterator = element.getChildrenWithName(new QName(
                TAG_MESSAGE_RECEIVER));
        while (iterator.hasNext()) {
            OMElement receiverElement = (OMElement) iterator.next();
            MessageReceiver receiver = loadMessageReceiver(loader,
                                                           receiverElement);
            OMAttribute mepAtt = receiverElement
                    .getAttribute(new QName(TAG_MEP));
            meps.put(mepAtt.getAttributeValue(), receiver);
        }

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    protected MessageReceiver loadMessageReceiver(ClassLoader loader,
                                                  OMElement element) throws DeploymentException {
        OMAttribute receiverName = element.getAttribute(new QName(
                TAG_CLASS_NAME));
        String className = receiverName.getAttributeValue();
        MessageReceiver receiver = null;


        try {
            Class messageReceiver;


            if ((className != null) && !"".equals(className)) {

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