I decided finally to switch to Java Shindig from PHP Shindig due to the better support and development of the first one. I had my working shindig installation for PHP with my own social database. I wanted to have the same with Java Shindig. It turned out to be much harder to set it up in Java maybe because of my java and maven ignorance. In PHP I only changed the database settings and added my own PersonService, AppDataService implementations. In Java the concept is the same but the way it is done was not that obvious for me. So, here is what I did

via Software for Web: Java Shindig: how to connect to real database.