Book Image

BPEL and Java Cookbook

By : Jurij Laznik
Book Image

BPEL and Java Cookbook

By: Jurij Laznik

Overview of this book

The Business Process Execution Language (BPEL) has become the de-facto standard for orchestrating web services. BPEL and web services are both clamped into Service-oriented Architecture (SOA). Development of efficient SOA composites too often requires usage of other technologies or languages, like Java. This Cookbook explains through the use of examples how to efficiently integrate BPEL with custom Java functionality.If you need to use BPEL programming to develop web services in SOA development, this book is for you.BPEL and Java Cookbook will show you how to efficiently integrate custom Java functionality into BPEL processes. Based on practical examples, this book shows you the solutions to a number of issues developers come across when designing SOA composite applications. The integration between the two technologies is shown two-fold; the book focuses on the ways that Java utilizes the BPEL and vice-versa.With this book, you will take a journey through a number of recipes that solve particular problems with developing SOA composite applications. Each chapter works on a different set of recipes in a specific area. The recipes cover the whole lifecycle of developing SOA composites: from specification, through design, testing and deployment. BPEL and Java Cookbook starts off with recipes that cover initiation of BPEL from Java and vice-versa. It then moves on to logging and tracing facilities, validation and transformation of BPEL servers, embedding of third-party Java libraries into BPEL. It also covers manipulation with variables in BPEL different techniques of Java code wrapping for web service usage and utilization of XML fa?ßades. After reading BPEL and Java Cookbook you will be able to circumvent many of the issues that developers experience during SOA composite application development.  
Table of Contents (18 chapters)
BPEL and Java Cookbook
Credits
About the Author
About the Reviewers
www.PacktPub.com
Preface
Index

Generating the XSLT map with the XSLT mapper


This recipe will explore how to configure the Transform activity. We will create an XSLT transformation file and use it to map the output variable of a web service to the response variable of the BPEL process. In this recipe, we will convert the semicolon delimited result text into an XML-formatted result.

Getting ready

If we now run the BPEL process we created in the previous recipe without the Transform activity, we will get a simple string response as shown in the following screenshot:

The response can be read well from the screen; however, if we need to process the response any further, we need to split the response by the delimiter and process the result. A more applicable solution is to use the XML format, which is easy to process.

We will extend the example from the previous recipe by adding additional elements to the response message. We open the XML_Mapping.xsd file and add the following lines to the processResponse element as follows:

&lt...