Suppressing superclass methods/events
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Daniel Dolan
il 9 Dic 2011
Modificato: Hamid Ramezani
il 7 Giu 2021
Is there a way to suppress super class methods and events? For example, a class based on handle:
classdef my_class < handle
inherits methods (addlistener, isvalid, etc.) that users of my_class don't need. I want to preserve a clean interface that prevents access to things defined outside of my_class.
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Walter Roberson
il 9 Dic 2011
Would it be enough to hide them somehow, so they don't show up in a normal methods listing? Or do they have to be gone?
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Hamid Ramezani
il 16 Set 2019
Modificato: Hamid Ramezani
il 7 Giu 2021
This is the best you can do to hide the methods which are relared to handle (here superclass). All te methods are hidden except 'isvalid' which is a sealed method of 'handle' class.
classdef myClass < handle
methods
function O = myClass()
end
end
methods (Hidden)
function varargout = findobj(O,varargin)
varargout = findobj@handle(O,varargin{:});
end
function varargout = findprop(O,varargin)
varargout = findprop@handle(O,varargin{:});
end
function varargout = addlistener(O,varargin)
varargout = addlistener@handle(O,varargin{:});
end
function varargout = notify(O,varargin)
varargout = notify@handle(O,varargin{:});
end
function varargout = listener(O,varargin)
varargout = listener@handle(O,varargin{:});
end
function varargout = delete(O,varargin)
varargout = delete@handle(O,varargin{:});
end
end
end
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Più risposte (1)
Daniel Shub
il 10 Dic 2011
I don't think so. I think this would violate the idea that an object of a subclass is also an object of the superclass. Maybe you do not want to subclass the handle class, this will reduce the number of inherited methods.
You also could switch to the old OOP system where you had to roll your own methods for nearly everything and hence had more control.
It is unclear why isvalid, and the like, would give individuals access to things outside your class.
You also could overload subsref to prevent calls to addlistener and isvalid. This could get ugly though.
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