MATLAB Programming Fundamentals - MathWorks

Save and Load System Object

This example shows how to load and save a System object.

Save System Object and Child Object

Define a saveObjectImpl method to specify that more than just public properties

should be saved when the user saves a System object. Within this method, use the default

[email protected] to save public properties to the struct, s. Use the

saveObject method to save child objects. Save protected and dependent properties, and

finally, if the object has been called and not released, save the object state.

methods (Access = protected)

function s = saveObjectImpl(obj)

s = [email protected](obj);

s.child = matlab.System.saveObject(obj.child);

s.protectedprop = obj.protectedprop;

s.pdependentprop = obj.pdependentprop;

if isLocked(obj)

s.state = obj.state;

end

end

end

Load System Object and Child Object

Define a loadObjectImpl method to load a previously saved System object. Within this

method, use the loadObject to load the child System object, load protected and private

properties, load the state if the object was called and not released, and use

loadObjectImpl from the base class to load public properties.

methods (Access = protected)

function loadObjectImpl(obj,s,isInUse)

obj.child = matlab.System.loadObject(s.child);

obj.protectedprop = s.protectedprop;

obj.pdependentprop = s.pdependentprop;

if isInUse

obj.state = s.state;

end

34 System object Usage and Authoring