This is a very interesting area that I've also been working on for 20+ years. I've found that using a standard POJO makes high level productivity for medium to high complexity applications not possible. Here is an example of actual code less development. 8 minute overview video:

http://www.planetjavainc.com/videos/WOW_WAS/WOW_WAS.html (takes a minute to load with camtasia). -Paul