Sometimes the default XSLT-mapper in the SOA Suite just is not enough. You want a little bit more or you want something that is re-usable for other components. The answer lies in writing your own XPath function.
The first thing we need is to create a jar file which contains our functionality. Say we want a function which creates a displayname based on a few parameters. We will use Maven to create our jar. Start of with your basic maven structure and your default pom file.