This tempting tidbit is used in one of the OpenNTF demo ExtLib databases (Dojo grid calling the 'JSON' JDBC Query REST services) to show JDBC being used as a data source for a dojox grid via the REST service control, but the parms and runtime environment  requirements are still undocumented.  

It works using the Derby local database in the demo, but I have found no joy in trying to use it with any other jdbc connection.

Was this rigged up specially to work with the local Derby demo source? If it's ready for general use, can anybody explain all the requirements to get this to work, for instance with DomSQL?