原型模式

阅读《研磨设计模式》笔记。之后若有所感，再补充。
原型模式核心：克隆
场景：有一个保存订单的系统，订单数超过1000则把订单分出1000，变成了两张订单，类推。
且订单分为个人订单和企业订单。

/**
 * @description 订单的接口，声明了可以克隆自身的方法
 * @author liuwei
 * @date 2014-4-17
 * @version 1.0
 */
public interface OrderApi {
	public int getOrderProductnNum();
	public void setOrderProductnNum(int num);
	/**
	 * 克隆自身的方法
	 * @return 订单原型的实例
	 */
	public OrderApi cloneApi();
}

/**
 * @description
 * @author liuwei
 * @date 2014-4-17
 * @version 1.0
 */
public class PersonalOrder implements OrderApi {
	private String customerName;
	private String productId;
	private int orderProductNum = 0;

	/*
	 * (non-Javadoc)
	 * 
	 * @see prototype.OrderApi#getOrderProductnNum()
	 */
	@Override
	public int getOrderProductnNum() {
		return orderProductNum;
	}

	/*
	 * (non-Javadoc)
	 * 
	 * @see prototype.OrderApi#setOrderProductnNum(int)
	 */
	@Override
	public void setOrderProductnNum(int num) {
		this.orderProductNum = num;
	}

	public String getCustomerName() {
		return customerName;
	}

	public void setCustomerName(String customerName) {
		this.customerName = customerName;
	}

	public String getProductId() {
		return productId;
	}

	public void setProductId(String productId) {
		this.productId = productId;
	}

	/*
	 * (non-Javadoc)
	 * 
	 * @see prototype.OrderApi#cloneApi()
	 */
	@Override
	public OrderApi cloneApi() {
		//
		PersonalOrder order = new PersonalOrder();
		order.setCustomerName(this.customerName);
		order.setProductId(this.productId);
		order.setProductId(this.productId);
		return order;
	}

	public String toString() {
		return "本个人订单的订购人是=" + this.customerName + ",订单产品是="
				+ this.getProductId() + ",订单数量为=" + this.orderProductNum;
	}
}

/**
 * @description
 * @author liuwei
 * @date 2014-4-17
 * @version 1.0
 */
public class EnterpriseOrder implements OrderApi{
	private String enterpriseName;
	private String productId;
	private int orderProductNum = 0;

	/* (non-Javadoc)
	 * @see prototype.OrderApi#getOrderProductnNum()
	 */
	@Override
	public int getOrderProductnNum() {
		// TODO Auto-generated method stub
		return 0;
	}

	public String getEnterpriseName() {
		return enterpriseName;
	}

	public void setEnterpriseName(String enterpriseName) {
		this.enterpriseName = enterpriseName;
	}

	public String getProductId() {
		return productId;
	}

	public void setProductId(String productId) {
		this.productId = productId;
	}

	/* (non-Javadoc)
	 * @see prototype.OrderApi#setOrderProductnNum(int)
	 */
	@Override
	public void setOrderProductnNum(int num) {
		// TODO Auto-generated method stub
		
	}

	/* (non-Javadoc)
	 * @see prototype.OrderApi#cloneApi()
	 */
	@Override
	public OrderApi cloneApi() {
		EnterpriseOrder order = new EnterpriseOrder();
		order.setEnterpriseName(this.enterpriseName);
		order.setOrderProductnNum(this.orderProductNum);
		order.setProductId(this.productId);
		
		return order;
	}
	
	public String toString(){
		return "本企业订单的订购企业是=" + this.enterpriseName + ",订单产品是="
				+ this.getProductId() + ",订单数量为=" + this.orderProductNum;
	}
}

/**
 * @description
 * @author liuwei
 * @date 2014-4-17
 * @version 1.0
 */
public class OrderBusiness {
	
	public void saveOrder(OrderApi order){
		while(order.getOrderProductnNum() > 1000){
			OrderApi newOrder = order.cloneApi();
			newOrder.setOrderProductnNum(1000);
			order.setOrderProductnNum(order.getOrderProductnNum() - 1000);
			System.out.println("拆分生成订单==" + newOrder);
		}
		System.out.println("订单==" + order);
	}
}

/**
 * @description 场景：有一个保存订单的系统，订单数超过1000则把订单分出1000，变成了两张订单，类推。
 * 且订单分为个人订单和企业订单。
 * @author liuwei
 * @date 2014-4-17
 * @version 1.0
 */
public class Client {
	public static void main(String[] args) {
		PersonalOrder order = new PersonalOrder();
		order.setCustomerName("张三");
		order.setOrderProductnNum(2999);
		order.setProductId("p001");
		
		OrderBusiness ob = new OrderBusiness();
		ob.saveOrder(order);
	}
}