How to add new tag in xml structure payload using MEL (mule)

Question

I'm new to Mule, please guide me how to insert new tag inside the XML structure using Mule Expression Language (MEL).Need to insert B tag in the below XML structure

<Test>
<A>table 1</A>
<C>table 3</C>
</Test> 

Thanks in Advance.

Answer 1

My dom4j fu is limited but here is what I came up with:

<mulexml:xml-to-dom-transformer returnClass="org.dom4j.Document" />

<expression-component><![CDATA[
  bNode = message.payload.rootElement.addElement('B');
  bNode.text = 'table 2';
  message.payload.rootElement.elements().add(1, bNode.detach());
]]></expression-component>

<mulexml:dom-to-xml-transformer />

This works fine with Mule 3.4.0.

Answer 2

Use a Data Weave component as below:

%dw 1.0
%output application/xml
%var myValue='MyValue'
%var B=''
---

myoutput:{
    data: payload.Test ++ B:myValue

}