How to add set/get methods methods in class constructor

I have a class with some properties that are linked to a registry. I would like the class to automatically retrieve values from the registry anytime one of those properties is accessed; conversely, I would like to push those values to a registry anytime a value is modified by the program. Rather than define each set/get method individually, I would like to set these set/get methods during the class constuctor. Some pseduocode is defined below:

classdef ExampleClass < handle
    properties(SetObservable,GetObservable)
        prop1;
        prop2;
        prop3; %etc.
    end
    methods
        function obj = ExampleClass(varargin)
            obj.registry = Registry(); %Defined elsewhere
            proplist = fields(obj);
            for ii = 1:length(proplist), SomeFuntionToAddSetMethod(obj,proplist{ii}, @obj.ListenerPullValues); end
            for ii = 1:length(proplist), SomeFuntionToAddGetMethod(obj,proplist{ii}, @obj.ListenerPushValues); end
        end
    end
    
    methods(Access = private)
        function ListenerPushValues(obj,eventData,~)
            obj.registry.WriteValue(eventData.Name,obj.(eventData.Name)); %write value in registry
        end
        
        function ListenerPullValues(obj,eventData,~)
            obj.(eventData.Name) = obj.registry.ReadValue(eventData.Name); %read value in registry
        end
    end
end

Question

Is it possible to assign set/get functions in the class constructor?

Answer 1

[Sean de Wolski]

You want dependent properties: Set and Get Methods for Dependent Properties - MATLAB & Simulink (mathworks.com)

[Collin Smith]

Hi Sean, thank you for taking the time to respond.

The properties are definately dependent; I just don't want to explicitly write the set and get methods for each property of the class. I was hoping to assign them to a single handle in the class constructor.

Answer 2

[Collin Smith]

I'd be interested if someone had a better solution to this, but I found a work-around by using listeners

classdef ExampleClass < handle
    properties(SetObservable,GetObservable)
        prop1;
        prop2;
        prop3; %etc.
    end
    properties(Access = private)
        disablelistener=0; %used to prevent recursive calling of the set/get listener functions
    end
    
    methods
        function obj = ExampleClass(varargin)
            obj.registry = Registry(); %Defined elsewhere
            proplist = fields(obj);
            for ii = 1:length(proplist), addlistener(obj,proplist{ii},'PreGet',  @obj.ListenerPullValues); end
            for ii = 1:length(proplist), addlistener(obj,proplist{ii},'PostSet', @obj.ListenerPushValues); end
        end
    end
    
    methods(Access = private)
        function ListenerPushValues(obj,eventData,~)
            if(~obj.disablelistener)
                obj.disablelistener=1; %Disable listener function to prevent recursive calling of get/set functions
                obj.registry.WriteValue(eventData.Name,obj.(eventData.Name)); %write value in registry
                obj.disablelistener=0; %Reenable listner function
            end
        end
        
        function ListenerPullValues(obj,eventData,~)
            if(~obj.disablelistener)
                obj.disablelistener=1; %Disable listener function to prevent recursive calling of get/set functions
                obj.(eventData.Name) = obj.registry.ReadValue(eventData.Name); %read value in registry
                obj.disablelistener=0; %Reenable listner function
            end
        end
    end
end

Answer 3

[Steven Lord]

If prop1, prop2, prop3, etc. are properties in this Registry object that you want to expose as properties of the ExampleClass class, take a look at dynamic properties.