Oracle Service Bus 11g Development Cookbook

Using the Java Callout action to invoke Java code

In this recipe, we will show how we can use a Java Callout action to invoke Java code, which might already exist. This is an easy way to extend the standard functionality of the service bus.

We will use the Java Callout action to call a Java method which returns the Checksum of the message passed as the parameter. The functionality of calculating a checksum is not available as an XPath/XQuery function and adding it through a Java Callout action is of course much simpler and more efficient than using a real web service.

Getting ready

You can import the OSB project containing the base setup for this recipe ...