class UnpooledDataSource implements DataSource {

    @Override
    public Connection getConnection() throws SQLException {
        return doGetConnection(username, password);
    }

    public  UnpooledDataSource();
    public  UnpooledDataSource(String driver, String url, String username, String password);
    public  UnpooledDataSource(String driver, String url, Properties driverProperties);
    public  UnpooledDataSource(ClassLoader driverClassLoader, String driver, String url, String username, String password);
    public  UnpooledDataSource(ClassLoader driverClassLoader, String driver, String url, Properties driverProperties);

}