How to Call Another Flow From Dataweave

This is a simple example showing how to call another flow and include that result in the resultant xml file. The opertaion "lookup" should be used in dataweave.

<?xml version="1.0" encoding="UTF-8"?>

<mule xmlns:http="http://www.mulesoft.org/schema/mule/http" xmlns:vm="http://www.mulesoft.org/schema/mule/vm" xmlns:metadata="http://www.mulesoft.org/schema/mule/metadata" xmlns:dw="http://www.mulesoft.org/schema/mule/ee/dw" xmlns="http://www.mulesoft.org/schema/mule/core" xmlns:doc="http://www.mulesoft.org/schema/mule/documentation"
 xmlns:spring="http://www.springframework.org/schema/beans" 
 xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
 xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-current.xsd
http://www.mulesoft.org/schema/mule/core http://www.mulesoft.org/schema/mule/core/current/mule.xsd
http://www.mulesoft.org/schema/mule/ee/dw http://www.mulesoft.org/schema/mule/ee/dw/current/dw.xsd
http://www.mulesoft.org/schema/mule/vm http://www.mulesoft.org/schema/mule/vm/current/mule-vm.xsd
http://www.mulesoft.org/schema/mule/http http://www.mulesoft.org/schema/mule/http/current/mule-http.xsd">
    <http:listener-config name="HTTP_Listener_Configuration" host="0.0.0.0" port="8081" doc:name="HTTP Listener Configuration"/>
    <flow name="dataweaveexampleFlow">
        <!-- <http:listener config-ref="HTTP_Listener_Configuration" path="/ab" doc:name="HTTP"/> -->
        <poll doc:name="Poll">
            <fixed-frequency-scheduler frequency="1000" />
            <expression-component doc:name="Expression">
             <![CDATA[
     dataweaveexample.User u1 = new dataweaveexample.User();
     u1.setName("DataWeave");
     u1.setEmail("contact@javaroots.com");
     u1.setRate(148.3385);
     dataweaveexample.User u2 = new dataweaveexample.User();
     u2.setName("Example");
     u2.setEmail("contact@javaroots.com");
     u2.setRate(28.3385);
     List list = new java.util.ArrayList();
     list.add(u1);
     list.add(u2);
     payload =  list;
   ]]>
            </expression-component> 
        </poll>
         <logger level="INFO" message="payload is :#[payload]" doc:name="Logger"/>
         <dw:transform-message doc:name="Transform Message">
         <dw:input-payload mimeType="application/java"/>
            <dw:set-payload><![CDATA[%dw 1.0
%output application/xml
---
{
  users:{(payload map {
   user:{
    name:$.name,
    email:$.email,
    count:$$+1,
    rate: $.rate as :string {format :"###,00"},
    flowValue:lookup("callFromAnotherFlow",$)
   }  
  })   
  }
}]]></dw:set-payload>
</dw:transform-message>
        <logger level="INFO" message="payload lodis is :#[payload]" doc:name="Logger"/>
    </flow>
    <flow name="callFromAnotherFlow">
        <set-payload value="Javaroots.com Mule ESB DataWeave Example" doc:name="Set Payload"/>
    </flow>
</mule>

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