Как конвертировать XML в объект класса?

public class EmployeeDAO 
{
	private Connection myCon;
	public static EmployeeDAO empDao;
	public EmployeeDAO()
	{
		try {
			myCon=DriverManager.getConnection("jdbc:mysql://localhost:3306/xml_test","root","");
		} catch (SQLException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}
	}
	
	public List<Employee> getAllEmployees() throws SQLException, JAXBException
	{
		List<Employee> list=new ArrayList<>();
		Statement statement=myCon.createStatement();
		ResultSet result=statement.executeQuery("SELECT * FROM employees");
		while(result.next())
		{
			Employee emp=convertXMLToEmployee(result);
			list.add(emp);
		}
		return list;
	}
	private Employee convertXMLToEmployee(ResultSet result) throws SQLException, JAXBException
	{
	 
		int id=result.getInt("id");
		String data=result.getString("data");
		int positionId=result.getInt("position_id");		
		StringReader sr = new StringReader(data);
		JAXBContext jaxbContext = JAXBContext.newInstance(Employee.class);
		Unmarshaller unmarshaller = jaxbContext.createUnmarshaller();
		Employee employee = (Employee) unmarshaller.unmarshal(sr);
		employee.setId(id);
		employee.setPositionId(positionId);
		return employee;
	}
}