Invoking third-party libraries from BPEL 1.1 process

This recipe explains how to include the code for invoking third-party libraries via the <bpelx:exec> tag in the source view.

Getting ready

We will amend the JDeveloper project from the Adding third-party libraries to JDeveloper projects recipe. We create an empty BPEL 1.1 process and leave the request and response messages unchanged.

How to do it…

To invoke a third-party library from the <bpelx:exec> tag, perform the following steps:

1. Open the empty BPEL 1.1 process. Since the output variable is not initialized yet, add the assign activity first. The following is the code for the assign activity:

   <assign name="Assign1" xml:id="id_11">
     <copy xml:id="id_12">
       <from expression="string('')" xml:id="id_13"/>
       <to variable="outputVariable" part="payload" query="/client:processResponse/client:result" xml:id="id_14"/>
     </copy>
   </assign>

2. Simply initialize the output part with an empty string.

3. Further...