This year at the IBM Innovate conference we presented several topics. One of which was on HATS web services and RDBMS integration points with the product. In the presentation we cover details on creating a web service from a System i 5250 application using nothing but the HATS macro and web service wizards.
As you can see creation, of SOAP and REST web services is very easy with the product. You also see how it creates the Java code, from which you can extend and enhance the out of the box functionality. Labels: HATS, rational