David W. Van Couvering wrote:
Hi, all. I would like to know exactly what are the
approved/documented ways to get a connection.
My reason for asking this is, I want to understand what all touch
points there are in JDBC that allow you to get access to the first
implementation class for a given driver. If I have it right,
everything hangs off of a Connection, so what are the ways in which
you get a Connection?
I know one way is to load the driver class and then use
DriverManager.getConnection().
Another way is, in a managed environment, use JNDI or some other
mechanism to load a registered DataSource and then use that to get a
connection.
Are there other ways? Can, for instance, a user directly create an
driver specific DataSource instance (rather than going through JNDI)
and then use that to create connections? Or is that not a supported
mechanism?
You can directly create an instance of a given DataSource in leiu of
using DriverManager. There are a required number of setters and any
additional properties must all be available via a setter.
Thanks,
David
