[hibernate-dev] OGM cassandra backend

The first part of the cassandra backend work is ready for review. I've backed out the incomplete association support, leaving the basic framework for the backend module with enough functionality to support entities that don't have relations. It's still larger than an average PR, but the module design follows an established pattern so it shouldn't cause too much problem. Unfortunately the plugin that runs cassandra embedded is a bit stale and won't play nice with the newer cassandra release that is required for some bug fixes. Until it catches up, you (and the CI cluster) will need to bring up a db server manually before running the tests. Fortunately it's not hard: http://www.apache.org/dyn/closer.cgi?path=/cassandra/2.1.4/apache-cassand... untar, then run bin/cassandra -f I has intended to roll straight into the association support functionality whist the PR on this first part was being reviewed, but I think I'll context switch to some infinispan stuff and return to OGM aligned with the next sprint starting in a couple of weeks. Jonathan. -- Registered in England and Wales under Company Registration No. 03798903 Directors: Michael Cunningham (USA), Matt Parson (USA), Charlie Peters (USA), Michael O'Neill(Ireland)