WS-BPEL 2.0 Beginner's Guide

Time for action – waiting for callback

To wait for the callback using the <pick> activity, we will do the following:

1. Add the <pick> activity by dragging-and-dropping it to the BookWarehousingBPEL process. Place it immediately after the <invoke> activity within the WarehousingConfirmationInvocation scope. We should see the <pick> activity with a single OnMessage branch:
   
2. Double-clicking on the OnMessage icon opens the dialog box, where we need to specify the Partner Link, Port Type, and Operation:
   
3. Similarly, we will create the variable on the fly, using ...