Example of using Component Binding in Mule2 (part 2)

<service name="OrderPostService">
  <inbound>
    <vm:inbound-endpoint path="order-post-service" synchronous="true"/>
  </inbound>
  <component class="net.pascalalma.mule.OrderAppInvoker">
    <binding interface="net.pascalalma.mule.InboundOrderBinding" method="process">
      <http:outbound-endpoint address="http://app-server:8090/order-in" synchronous="true">
        <response-transformers>
          <byte-array-to-string-transformer />
        </response-transformers>
      </http:outbound-endpoint>
    </binding>
  </component>
  <default-service-exception-strategy>
    <vm:outbound-endpoint path="handle-error" />
  </default-service-exception-strategy>
</service>

package net.pascalalma.mule;
 
public interface InboundOrderBinding {
 
    String process(String o);
}

package net.pascalalma.mule;
 
import org.mule.api.lifecycle.Callable;
import ...;
 
public class OrderAppInvoker implements Callable {
 
    private InboundOrderBinding binding;
 
    public InboundOrderBinding getBinding() {
        return binding;
    }
    public void setBinding(InboundOrderBinding binding) {
        this.binding = binding;
    }
 
    public Object onCall(MuleEventContext ctx) throws Exception
    {
        MuleMessage msg = ctx.getMessage();
 
        //Get the original XML message
        String orgMessageString = (String) msg.getPayload();
 
        // Call the bound method and get the response message
        String responseString = binding.process(orgMessageString);
 
        //Deserialize the String messages to JAXB Objects so it's easier to combine the
        // two to my new message type
        InboundOrderType it = unmarshal(InboundOrderType.class, orgMessageString);
        OrderResponseType or = unmarshal(OrderResponseType.class, responseString);
 
        // Now construct the new response containing both the original and the orderResponse
        // message
        ObjectFactory of = new ObjectFactory();
        MyResponseType responseType = of.createMyResponseType();
        responseType.setOrderResponse(or);
        responseType.setOriginalMsg(it);
        JAXBElement<myResponseType> response = of.createMyResponse(responseType);
 
        // Put the newly constructed as payload on the message and return that message
        msg.setPayload( marshal(response));
        return msg;
    }
 
    private <t> T unmarshal(Class<t> docClass, String input)
            throws JAXBException {
       ...
    }
 
    public String marshal(JAXBElement el) throws JAXBException {
        ...
    }
}