【设计模式】之装饰器模式-PHP

最新推荐文章于 2023-04-25 15:16:56 发布

原创最新推荐文章于 2023-04-25 15:16:56 发布 · 282 阅读

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CC 4.0 BY-SA版权

本文介绍了一种基于PHP的装饰者模式实现，通过不同装饰类的组合来增强主进程的功能，包括日志记录、用户验证和结构化请求等步骤。

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<?php

/**
 * 需求基类
 * Class RequestHelper
 */
class RequestHelper{}

/**
 * 接口
 * Class RequestProcess
 */
abstract class RequestProcess extends RequestHelper
{
    abstract function process(RequestHelper $requestHelper);
}


/**
 * 主进程
 * Class MainProcess
 */
class MainProcess extends RequestProcess
{
    public function process(RequestHelper $requestHelper){
        print  __CLASS__."：doing something useful  request \n";
    }
}

/**
 * 进程装饰器 （委托类）
 * Class DecorateProcess
 */
abstract class DecorateProcess extends RequestProcess
{
    protected $requestProcess;

    public function __construct(RequestProcess $requestProcess){
        $this->requestProcess = $requestProcess;
    }
}

/**
 * 日志请求进程继承装饰器实现装饰器继承的抽象类的抽象方法
 * Class LogRequest
 */
class LogRequest extends DecorateProcess
{
    public function process(RequestHelper $requestHelper){
        print __CLASS__."：logging request\n";
        $this->requestProcess->process($requestHelper);
    }
}

/**
 * 用户验证请求进程继承装饰器实现装饰器继承的抽象类的抽象方法
 * Class AuthenticateRequest
 */
class AuthenticateRequest extends  DecorateProcess
{
    public function process(RequestHelper $requestHelper){
        print __CLASS__."：authenticate request \n";
        $this->requestProcess->process($requestHelper);
    }
}

/**
 *
 * Class StructureRequest
 */
class StructureRequest extends DecorateProcess
{
    public function process(RequestHelper $requestHelper){
        print __CLASS__."：structure request\n";
        $this->requestProcess->process($requestHelper);
    }
}

//client

$process = new LogRequest(new AuthenticateRequest(new StructureRequest(new MainProcess())));

$process->process(new RequestHelper());

/**
LogRequest：logging request
AuthenticateRequest：authenticate request
StructureRequest：structure request
MainProcess：doing something useful  request
 */