Matlab命令模式

命令模式(command)将命令封装为对象，实现命令发送者和命令接收者的解耦。线程池、mvc框架用到了命令模式，本文根据以下类图，用matlab实现命令模式。

 

invoker.m (传递命令对象invoker：持有命令对象，要求命令对象执行请求)

classdef invoker < handle
    properties
        command
    end
    methods
        function setorder(obj,command)
            obj.command = command;
        end
        function execute(obj)
           obj.command.execute();
        end
    end
end

command.m (抽象命令接口command：定义命令的接口，声明执行的方法)

classdef command < handle
    methods(abstract)
        execute(obj);
    end
end

concretecommand.m (具体的命令对象concretecommand：持有具体的接受者对象，完成具体的具体的命令)

classdef concretecommand < command
    properties
        receiver
    end
    methods
        function obj = concretecommand(receiver)
           obj.receiver = receiver;
        end        
        function execute(obj)
            obj.receiver.execute();
        end
    end
end

receiver.m (接受者对象receiver：接受者对象，真正执行命令的对象)

classdef receiver < handle
    methods
        function execute(~)
           disp("receiver execute");
        end
    end
end

test.m

r = receiver();
c = concretecommand(r);
i = invoker();
i.setorder(c);
i.execute();

参考资料：