Copying a message using a JavaCompute node

The incoming message and message assembly are read-only. In order to modify a message, a copy of the incoming message must be made. The Modifying Message Class template in the JavaCompute node wizard generates this copy. The following copy constructors are called:
 MbMessage outMessage = new MbMessage(inAssembly.getMessage);
 MbMessageAssembly outAssembly = new MbMessageAssembly(inAssembly, outMessage); 
The new outAssembly object is propagated to the next node.
Related tasks
Accessing elements in a message tree from a JavaCompute node
Related reference
JavaCompute node