WS-BPEL 2.0 Beginner's Guide

Time for action – adding the <while> loop

Let us start with the <while> loop:

1. Before adding the <while> loop, construct the BPEL flow. We will add two variables: NoOrders and i, both of the type xsd:int. We can add variables using the big green plus sign in the lower left window:
   

   Alternatively, we can write source code directly:

   
2. Then we will need to know how many items we have in our list of book orders. We will use the XPath count() function to achieve this. Alternatively, we could use an Oracle extension function ora:countNodes(), but this would make ...