Book Image

Oracle SOA BPEL Process Manager 11gR1 - A Hands-on Tutorial

Book Image

Oracle SOA BPEL Process Manager 11gR1 - A Hands-on Tutorial

Overview of this book

BPEL, Business Process Execution Language is the definitive standard in writing and defining actions within business processes. Oracle BPEL Process Manager R1 is Oracle's latest offering, providing you with a complete end-to-end platform for the creation, implementation, and management of your BPEL business processes that are so important to your service-oriented architecture."Oracle SOA BPEL Process Manager 11gR1 – A Hands-on Tutorial" is your guide to BPEL design and development, SOA Suite platform troubleshooting, and engineering in a detailed step-by-step guide working real-world examples and case studies. Using industry-leading practices you will start by creating your first BPEL process and move onto configuring your processes, then invoking, orchestrating, and testing them. You will then learn how to use architect and design services using BPEL, performance tuning, integration, and security, as well as high availability, troubleshooting, and modeling for the future. "Oracle SOA BPEL Process Manager 11gR1 – A Hands-on Tutorial" is your complete hands-on guide to Oracle SOA BPEL Process Manager 11g.
Table of Contents (20 chapters)
Oracle SOA BPEL Process Manager 11gR1 – A Hands-on Tutorial
Credits
About the Authors
Acknowledgement
About the Reviewers
www.PacktPub.com
Preface
Index

BPEL variables


Similar to Java, BPEL Variables are used to contain temporary data. A variable can either contain an XSD value or a WSDL message.

Oracle BPEL Process Manager has the following types of variables:

  • XML schema type (Type)

  • WSDL message type (Message Type)

  • XML schema element (Element)

Message Type variables are used to hold data in interactions between the process and its partner services.

The BPEL variable holds the message data between a BPEL client, external services, and local data used by the BPEL process. The sample code for declaring a variable in BPEL is given as follows:

<variables>
  <variable   name="hello_world" 
              messageType="Type" />
</variables>

Each variable can be declared as a messageType or an element. As shown in the following screenshot, select an activity and click on (x) to edit the output and input variables.

Double-click on the input, output, or OnMessage variable to enter the details of the variable:

One kind of variable type can...