I have doubt using jpa. I defined the datanucleus connection for MYSQL as follows.
datanucleus.ConnectionDriverName=com.mysql.jdbc.Driver
datanucleus.ConnectionURL=jdbc:mysql://localhost/myDB
datanucleus.ConnectionUserName=...
datanucleus.ConnectionPassword=..
My constraint is if I want to connect to google app engine datastore(ie Big table) via jpa how to give the above connection for bigtable.