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每日一模式之php的适配器模式

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2016-06-23 13:20:08771browse

/*** 适配器模式 :将某一个对象的接口适配为另外一个 */interface Seller{	public function sell();} //场景:中草药,直接买,特别处理后卖掉class HerbalMedicine {	private $_medicine,$_pick_date,$_keep_time;	public function __construct($medicine){		$this->_medicine = $medicine;	}	public function getMedicne(){		return $this->_medicine;	}	//and so on}//直接出售class RedictMedicineSeller implements Seller{	private $_medicine;	public function __construct($medicine_obj){		$this->_medicine = $medicine_obj;	}	public function sell(){		echo $this->_medicine->getMedicne()." redict sell \n";	}}$herbarl_obj = new HerbalMedicine("中草药");$redict_obj = new RedictMedicineSeller($herbarl_obj);$redict_obj->sell();//提取这个动作可能不仅仅是ExtractMedicineSeller 用到//不能用ExtractMedicineSeller 的方法代替提取class HerbalMedicineAdapter extends HerbalMedicine{	public function __construct($medicine){		parent::__construct($medicine);		$this->extract($medicine);	}	public function extract(){		echo "extract medicine \n";	}}//比如提取出青蒿素处理后出售class  ExtractMedicineSeller  implements Seller{	private $_medicine;	public function __construct($medicine_obj){		$this->_medicine = $medicine_obj;	}	public function sell(){		echo $this->_medicine->getMedicne()." extract sell \n";	}}$herbarl_adapter_obj = new HerbalMedicineAdapter("中草药");$extract_obj = new ExtractMedicineSeller($herbarl_adapter_obj);$extract_obj->sell();//适配器模式说的是同源,处理后适用不同的对象//如果不做适配处理可能会影响以前的功能,或者会任意添加方法,类的功能不再单一,不方便以后的扩张

适配器模式 :将某一个对象的接口适配为另外一个 ,可以用于同源但是需要不同的处理情况



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