Access flow variable in java code mule

Question

I stored some information in a variable, but I do not know how to access it in my java code...

Example:

<sub-flow name="EnrichMessage" doc:name="EnrichMessage">
    <component doc:name="Scenario01" class="Class01"/>
    <set-variable variableName="Parameters" value="#[payload]" doc:name="Variable"/>
    <flow-ref name="SubFlow01" doc:name="SubFlow01"/>
    <component doc:name="Scenario02" class="Class02"/>
</sub-flow>

I already saw some incomplete answers, but still don't know how to do that. Anyone can post a complete answer?

Thanks.

Answer 1

In java there are a few ways to access variables depending the type of java class you are using:

onCall event class

 public Object onCall(MuleEventContext eventContext, @Payload String payload)
 throws Exception {
    String returnPath = eventContext.getMessage().getProperty("myReturnPath", PropertyScope.OUTBOUND);

If the MuleMessage is passed:

 public void process(@Payload MuleMessage payload ){
 String returnPath = messge.getProperty("myReturnPath", PropertyScope.OUTBOUND);

Using an OutboundHeader annotation

  public void process(@Payload String payload, @OutboundHeaders Map headers ){
    String prop = headers.get("propname");