JsonObject is really common in most applications today and it would be really helpful to have support for PostgreSQL's JSON data type natively in PGSQL. There is already a sample code here that achieves this, but it would be better if this were a supported feature of the PGSQL driver in NHibernate.

Over time, additional JSON support could be added including the ability to query JSON properties using the PGSQL native SQL functions dealing with JSON data types.