Initializes driver properties that come from a JNDI reference (in the
case of a javax.sql.DataSource bound into some name service that doesn't
handle Java objects directly).
Proxies method invocation on the java.sql.Connection interface, trapping
"close", "isClosed" and "commit/rollback" (to switch connections for load
balancing).
This method is called to determine if the resource manager instance
represented by the target object is the same as the resouce manager
instance represented by the parameter xares.
Can the column be used in a WHERE clause? Basically for this, I split the
functions into two types: recognised types (which are always useable),
and OTHER types (which may or may not be useable).