How to define a shared SetMethod for multiple dynamic properties?

I am implementing a class which must allow dynamic properties to be added and their values modified at will by the user. There is no way to tell what the name of the property will be beforehand, or how many dynamic properties will be added, so I want to use the same SetMethod for all dynamic properties.

Here's the problem: when the SetMethod is invoked, its only input arguments are the object and the value that I'm trying to set the dynamic property to - I can't find any way to pass the name of the property to the SetMethod. I've tried passing the name of the dynamic property into the SetMethod via the function handle, but Matlab complains that there are "Too many input arguments" whenever I do this.

The documentation alludes to shared access methods for dynamic properties in this page, but unfortunately there are no examples: http://www.mathworks.com/help/matlab/matlab_oop/access-methods-for-dynamic-properties.html

This code demonstrates the issue:

classdef MyClass < dynamicprops

    properties
    end

    methods
        function mc = MyClass(prop_name,prop_data)

            % Return if no arguments
            narginchk(0,2);
            if nargin < 2
                return;
            end

            % Add a dynamic property
            p = addprop(mc,prop_name);
            p.SetMethod = @(x)dataSetter(prop_name); % Trying to pass in the property name, so that the "dataSetter" method can be used to set more than one dynamic property

            % Set the property value
            mc.(prop_name) = prop_data; % This calls the SetMethod "dataSetter"

        end

        function dataSetter(mc,prop_name,prop_data)
            % Do some data validation here
            % 

            % Do some fancy stuff here
            % 

            % Set the property value
            mc.(prop_name) = prop_data;

            % Do some other stuff here
            % 
        end
    end

end

With that class implemented, I get this:

>> mc = MyClass('tmp','test')
Error using MyClass>@(x)dataSetter(prop_name)
Too many input arguments.
Error in MyClass (line 20)
            mc.(prop_name) = prop_data; % This calls the SetMethod "dataSetter" 
20              mc.(prop_name) = prop_data; % This calls the SetMethod "dataSetter"

I'm using Matlab r2013b.

Thanks!!!

Answer 1

[Andrew Joslin]

Found the answer here: http://www.mathworks.com/matlabcentral/answers/266684-how-do-i-write-setter-methods-for-properties-with-unknown-names?s_tid=answers_rc1-2_p2

I thought I combed the Q/A area well enough, but I guess not!