ESB MULE passing the parameters to the java method

Question

I use MULE version 3.3.0 CE, I want to get some value from header in inbound and then pass it to a java method, in java method making some changes on passed value, finally again I pass it from java method to the outbound????

Answer 1

Instead of tying your Java beans to the Mule API (with Callable), you can do this using MEL only, for example with:

<invoke object-ref="yourBean"
        method="yourMethod"
        methodArguments="#[message.inboundProperties['inboundPropertyName']]" />

<set-property propertyName="outboundPropertyName"
              value="#[payload]" />

This has the caveat that the message payload is affected by the invoke element. If this is a problem then you can go with:

<expression-component>
    propVal = app.registry.yourBean.yourMethod(message.inboundProperties['inboundPropertyName']);
    message.outboundProperties['outboundPropertyName'] = propVal;
</expression-component>