Accessing object B properties outisde of object A's getter method

I am trying to implement an object with dependent properties and therefore have a getter method to dynamically access these properties. However, I am having trouble with implementation once the properties are dependent on properties of objects outside of the particular class. EX

classdef objA

properties (Dependent)

   propA

end

methods

    propA = get.propA(objA)
    propA = objA.propA * propB.value;

end

Answer 1

[Alex Taylor]

Sounds like your class objA should define a property that holds the object(s) you need to define your get operation.

classdef objA

properties (Dependent)

     propA
     propB

end

methods

      propA = get.propA(objA)
      propA = objA.propA * propB.value;
  end

http://en.wikipedia.org/wiki/Object_composition

[gareth]

Thank you for the response. I had previously considered your suggestion however, what if propB is truly a property of some other uniquely different class. Ex: if objA.propA = tire.weight & objB.propB = door.weight. ( This is probably a bad example compared to the early given code)