if (cf == null) {
try {
DriverManager.registerDriver((Driver)
Class.forName(driverCN).newInstance());
setConnectionFactory(
new ConnectionSpecJDBC(url, driverCN, userName, password));
} catch (Exception e) {
logger.log(BasicLevel.ERROR,
"Impossible to configure the jdbc access: ", e);
throw new RuntimeException(
"Impossible to configure the jdbc access: "