WS-BPEL 2.0 Beginner's Guide

Time for action – copying variable parts

Let's now copy the BookstoreBResponse variable to the BookStoreWithLowestQuantity variable. Because the BookstoreBResponse variable is of a different message type than the BookStoreWithLowestQuantity variable, we cannot copy variables directly.

However, both message variables use the same XML element, namely BookDataResponse as payload. Therefore, we can copy the payloads of both variables:

1. Open the BookWarehousingBPEL.bpel window.
2. Scroll to the <if> activity and locate the elseifBookstoreBLowerOrEqual branch.
3. Drag-and-drop the Assign activity from the right-hand side BPEL Constructs / Basic Activities toolbar and place it after the existing AssignBookstoreB assign.
4. Double-click on the assign activity and the ...