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 endCommand.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 endConcreteCommand.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 endReceiver.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 endtest.m
r = Receiver(); c = ConcreteCommand(r); i = Invoker(); i.setOrder(c); i.execute();参考资料:
https://blog.csdn.net/wsh622827/article/details/4759368
https://blog.csdn.net/zhwyj1019/article/details/79758057