* @return The mapped Customer from the current row of the given ResultSet.
* @throws SQLException
* If something fails at database level.
*/
private static Customer mapCustomer(ResultSet resultSet) throws SQLException {
return new Customer(resultSet.getLong("id"), resultSet.getString("firstName"), resultSet.getString("lastName"),
resultSet.getString("email"), resultSet.getString("phone"), resultSet.getString("address"),
resultSet.getLong("CreditCard_number"));
}