I am recently trying to implement my own database adapter with Cassandra database, I am using Yacassandrapdo as driver. The only document I could find is just a couple of lines from here
With the sample code from incubator, it makes sense about adapter, but not very helpful in terms of a fully new adapter.
The example from fishjerky is good one,
But I think it will be good with more documents/tutorial of what are necessory steps (adapter methods) need to be done to build a new adapter