After many weeks of work we finally have integrated the work done by Guillaume, Alan and Oliver back to master. To run the mongodb module, make sure to activate the mongodb profile mvn clean install -Pmongodb If like me you have installed MongoDB in a different host / port, you can use the following environment variables export MONGODB_HOST=mongodb-machine export MONGODB_PORT=1234 mvn clean install -Pmongodb Many thanks guys. Not everything is done and polished (I have left OGM-132 and OGM-147 opened for that) but that will simplify a lot future works. Emmanuel