WS-BPEL 2.0 Beginner's Guide

Time for action – adding fault handlers

The steps for adding fault handlers are as follows:

1. We check the content of the input message before preparing the request to the query services. The <if> activity can be used to check the content of input and get an action based on the result. So let's drag-and-drop a new <if> activity in between the <receive> and <assign> activities that prepare the request message to the query service:
   
2. Now, let's add the content verification logic as the condition in the <if> activity. Click on the if case in the <if> activity and use XPath Expression Builder to generate the expression in the box named Condition:
3. Now, if the ...