public class Database
{
    public void allowed()
    {
        // This should NOT trigger a pattern test violation as this is a
        // class allowed to perform JDBC access.
        DatabaseManager manager = new DatabaseManager();
    }        

    public void forbidden() throws Exception
    {
        InitialContext context = new InitialContext();
        DataSource dataSource = (DataSource) context.lookup("data source name");

        // This should trigger a pattern test violation.
        Connection connection = dataSource.getConnection();

        // This should trigger a pattern test violation.
        PreparedStatement statement = connection.prepareStatement("some SQL");

        // This should trigger a pattern test violation.
        statement.execute();
    }        
}