In 2008 I have been working on the TenderNed project at ICTU foundation for several months. We started off developing the system on an industry wide accepted platform based on Java, JEE, JBoss Seam, and a relational database.
Sadly and rather sudden, the project was hijacked by an ICTU employed group of astronaut architects unfortunately backed by ICTU management: Java was thrown out and replaced by a highly unrealistic XML-everywhere architecture. I left.
I hope some people got a little wiser out of this and learned something. I know I did.