trouble binding value from request->Object

[nyker]

Hi I am having some trouble binding request parameters to an Interfaced Object. Here's my setup:

Note: All this code works fine when Type is just a class and not an interface. What's wrong here?

public interface Type {
    String getBrand();

    void setBrand(String brand);

    String getMake();

    void setMake(String make);
}

public interface Car {
    String getColor();

    void setColor(String color);

    Type getType();

    void setType(Type type);
}

Next 2 concrete implmentation of these 2 Interfaces: CarImpl and TypeImpl which I will not show.

Below is the TypePropertyEditor I defined that converts say String "Honda,Accord" to a TypeImpl object.

public class TypePropertyEditor extends PropertyEditorSupport {

    @Override
    public void setAsText(String text) throws IllegalArgumentException {
        if (text==null || !text.matches("\\s*\\w+\\s*,\\s*\\w+\\s*")) throw new IllegalArgumentException();
        String[] sa = text.split(",");
        Type type = new TypeImpl(sa[0].trim(),sa[1].trim());
        setValue(type);
    }

    @Override
    public String getAsText() {
        Type type = (Type)getValue();
        return type.getBrand()+","+type.getMake();
    }

}

Finally here is a failed test I wrote:

public void testB() {
        MockHttpServletRequest request = new MockHttpServletRequest();
        request.addParameter("color","red");
        request.addParameter("type","Honda,Accord");
        Car car = new CarImpl(new TypeImpl(),null);
        ServletRequestDataBinder binder = new ServletRequestDataBinder(car);
        binder.registerCustomEditor(Type.class, new TypePropertyEditor());
        binder.bind(request);

        System.out.println(car);
        assertEquals(new CarImpl(new TypeImpl("Honda","Accord"), "red"), car);
    }

[nyker]

found the problem in my ApplicationContext xml file. All works now.