八. .PHP模式设计企业模式(1)

(*暂时未拆分前端控制器和应用控制器,全部集成在Command类实现)

magento(麦进斗)

Magento是一套专业开源的PHP电子商务系统。Magento设计得非常灵活，具有模块化架构体系和丰富的功能。易于与第三方应用系统无缝集成。Magento开源网店系统的特点主要分以下几大类，网站管理促销和工具国际化支持SEO搜索引擎优化结账方式运输快递支付方式客户服务用户帐户目录管理目录浏览产品展示分析和报表Magento 1.6 主要包含以下新特性：•持久性购物 - 为不同的

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1 注册表模式//注册表模式//注册表模式用于提供一个系统级别对象,在任何地方都方便访问(可以使用单例模式)class Registry{    private static $instance;    private $request;    private function __construct(){}    static function instance(){        if(!isset(self::$instance)){            self::$instance=new self();        }        return self::$instance;    }    function getRequest(){        $this->request;    }    function setRequest(Request $request){        $this->request=$request;    }}class Request{}  2 三种作用域下的注册表namespace woo\controller;class Request{}class Complex{}//创建一个具有作用域的注册表模式//请求级别注册表namespace woo\base;use woo;abstract class Registry{    abstract protected function get($key);    abstract protected function set($key,$val); }class RequestRegistry extends Registry{    private $values=array();    private static $instance;    private function __construct(){}    //返回唯一实例    static function instance(){        if(!isset(self::$instance)){            self::$instance=new self();        }        return self::$instance;    }    protected function get($key){        if(isset($this->values[$key])){            return isset($this->values[$key]);        }        return null;    }    protected function set($key, $val){        $this->values[$key]=$val;    }    static function getRequest(){        return self::instance()->get('request');    }    static function setRequest(woo\controller\Request $request){        return self::instance()->set('request', $request);    }}//会话级别的注册表class SessionRegistry extends Registry{    private static $instance;    private function __construct(){        session_start();    }    //返回唯一实例    static function instance(){        if(!isset(self::$instance)){            self::$instance=new self();        }        return self::$instance;    }    protected function get($key){        if( isset($_SESSION[__CLASS__][$key]) ){            return isset($_SESSION[__CLASS__][$key]);        }        return null;    }    protected function set($key, $val){        $_SESSION[__CLASS__][$key]=$val;    }    static function getComplex(){        return self::instance()->get('complex');    }    static function setRequest(woo\controller\Complex $request){        return self::instance()->set('complex', $request);    }}//应用程序级别的注册表class ApplicationRegistry extends Registry{    private static $instance;    private $freezedir='Data';    private $values=array();    private $mtimes=array();    private function __construct(){        session_start();    }    //返回唯一实例    static function instance(){        if(!isset(self::$instance)){            self::$instance=new self();        }        return self::$instance;    }    //get,set都是单独保存一个$key到文件中    protected function get($key){        $path=$this->freezedir.DIRECTORY_SEPARATOR.$key;        if(file_exists($path)){            clearstatcache();            //获取文件修改时间            $mtime=filemtime($path);            if(!isset($this->mtimes[$key])){                $this->mtimes[$key]=0;            }            //如果文件被修改            if($mtime > $this->mtimes[$key]){                $data=file_get_contents($path);                $this->mtimes[$key]=$mtime;                return ($this->values[$key]=unserialize($data));            }        }        if(isset($this->values[$key])){            return $this->values[$key];        }        return null;    }    protected function set($key, $val){        $this->values[$key]=$val;        $path=$this->freezedir.DIRECTORY_SEPARATOR.$key;        //文件不存在会自动创建        file_put_contents($path, serialize($val));        $this->mtimes[$key]=time();    }    static function getDSN(){        return self::$instance()->get('DSN');    }    static function setDSN($dsn){        return self::$instance()->set('DSN',$dsn);    }}3 前端控制器Controller----结合注册表模式与命令模式打造统一入口框架doExecute($request);    }    function disPlay($request){        //获取cmd,用于决定调取那个页面        $cmd=$request->getProperty('cmd');        //写法不是很好....截取command之前的字符        print $cmd;        $viewUrl="./Woo/View/".substr($cmd,0,strlen($cmd)-(7))."View.html";        include_once($viewUrl);    }    abstract function doExecute(\Woo\Controller\Request $request);} getProperty('cmd');        $sep=DIRECTORY_SEPARATOR;        //找不到指定cmd数据时,返回默认cmd实例        if(!$cmd){            return clone self::$default_cmd;        }        $cmd=str_replace(array('.',$sep), "", $cmd);        $filePath=".\Woo{$sep}Command{$sep}{$cmd}.php";        $className="\Woo\\Command\\{$cmd}";        if(file_exists($filePath)){            require_once("$filePath");            //判断传入的类是否存在,是否是base_cmd的子类            if(class_exists($className)){                $cmd_class=new \ReflectionClass($className);                if($cmd_class->isSubclassOf(self::$base_cmd)){                    return $cmd_class->newInstance();                }else{                    //解析失败,跳转到默认页面                    $request->addFeedback("command '$cmd' is not a command");                    return clone self::$default_cmd;                }            }        }else{            $request->addFeedback("command '$cmd' is not found");            return clone self::$default_cmd;        }    }}addFeedback("Welcome to WOO!");        $feedbacks=$request->getFeedback();        foreach ($feedbacks as $key=>$val){            print $val;            print "
";        }        include_once("Woo/View/main.html");    }}addFeedback("Welcome to WOO!");        $feedbacks=$request->getFeedback();        foreach ($feedbacks as $key=>$val){            print $val;            print "
";        }        $this->disPlay($request);    }}freezedir.DIRECTORY_SEPARATOR.$key;        if(file_exists($path)){            clearstatcache();            //获取文件修改时间            $mtime=filemtime($path);            if(!isset($this->mtimes[$key])){                $this->mtimes[$key]=0;            }            //如果文件被修改            if($mtime > $this->mtimes[$key]){                $data=file_get_contents($path);                $this->mtimes[$key]=$mtime;                return ($this->values[$key]=unserialize($data));            }        }        if(isset($this->values[$key])){            return $this->values[$key];        }        return null;    }    protected function set($key, $val){        $this->values[$key]=$val;        $path=$this->freezedir.DIRECTORY_SEPARATOR.$key;        if(!is_dir($this->freezedir)){            mkdir($this->freezedir);        }        //文件不存在会自动创建        file_put_contents($path, serialize($val));        $this->mtimes[$key]=time();    }    static function getDSN(){        return self::instance()->get('DSN');    }    static function setDSN($dsn){        return self::instance()->set('DSN',$dsn);    }}values[$key])){            return isset($this->values[$key]);        }        return null;    }    protected function set($key, $val){        $this->values[$key]=$val;    }    static function getRequest(){        return self::instance()->get('request');    }    static function setRequest(\Woo\Controller\Request $request){        return self::instance()->set('request', $request);    }}get('complex');    }    static function setRequest(Woo\Controller\Complex $request){        return self::instance()->set('complex', $request);    }}getOptions();    }    //只有缓存数据不存在时才会调用该方法    private function getOptions(){        $this->ensure(file_exists($this->config),                "Could not find options file!");        $options=simplexml_load_file($this->config);        print get_class($options);        $dsn=$options->dsn;        $this->ensure($dsn, "No DSN found!");        //获取值之后,将其存放进应用程序级别注册表中,方便缓存使用        //先转化成数组,方便序列化        \Woo\Base\ApplicationRegistry::setDSN(array($dsn->__toString()));        //设置其他值        //...    }    private function ensure($expr,$message){        if(!$expr){            throw new \Exception($message);        }    }}init();        //理论上讲handleRequest需要在每次请求到来时运行        $instance->handleRequest();    }    function init(){        //获取一个单例,用于做全局配置        $applicationHelper=ApplicationHelper::instance();        $applicationHelper->init();    }    //每次请求都需要调用一次    function handleRequest(){        $request=new Request();        $cmd_r=new \Woo\Command\CommandResolver();        //根据request生成对应command抽象类(接口)的子类实例        //之后要利用command执行相关动作        $cmd=$cmd_r->getCommand($request);        $cmd->execute($request);    }}init();        \Woo\Base\RequestRegistry::setRequest($this);    }    //同时支持HTTP请求和命令行参数(可用于调试程序使用)    //*用于将参数填充进properties属性里    function init(){        //表单提交方式        if(isset($_SERVER['REQUEST_METHOD'])){            //用于收集表单提交的数据            $this->properties=$_REQUEST;            return;        }        //$_SERVER['argv'] 传递给该脚本的参数        foreach ($_SERVER['argv'] as $arg){            //搜索字符串第一次出现的位置            if(strpos($arg, '=')){                list($key,$val)=explode("=", $arg);                $this->setProperty($key,$val);            }        }    }    function getProperty($key){        if(isset($this->properties[$key])){            return $this->properties[$key];        }        return null;    }    function setProperty($key,$val){        $this->properties[$key]=$val;    }    function addFeedback($msg){        array_push($this->feedback, $msg);    }    function getFeedback(){        return $this->feedback;    }    function getFeedbackString($separator="\n"){        return implode($separator,$this->feedback);    }}//woo_options.xmldsnDSN //框架入口index.php