Attribute.java

public class Attribute {

    private final String mAttributeName;

    private final Method mSetter;

    public Attribute(String attributeName, Method setter) {
        mAttributeName = attributeName;
        mSetter = setter;
    }

    public void setValue(Object target, Object value)
            throws InvocationTargetException, IllegalAccessException {
        mSetter.invoke(target, value);
    }

    public String getName() {
        return mAttributeName;
    }

    public static class CompoundAttribute extends Attribute {

        private final SubParser mSubParser;


        public CompoundAttribute(String attributeName, Method setter, SubParser subParser) {
            super(attributeName, setter);
            mSubParser = subParser;
        }

        @Override
        public void setValue(Object target, Object value)
                throws InvocationTargetException, IllegalAccessException {
            super.setValue(target, mSubParser.parse(value));
        }
    }

    public interface SubParser {

        public Object parse(Object jsonObject);
    }

}