orderitem.java

java学习的必要的资料,servlet的说明很好

package com.estore.struts.entity;

import java.io.Serializable;

//　一个orderitem对应着一类商品；
public class OrderItem implements Serializable, Cloneable {
	
	/**
	 * 
	 */
	private static final long serialVersionUID = -591443220891202474L;
	private Integer order_item_id ;
	private int quality ;//每中商品的数量；
	private Product product=new Product();
	private Order order=new Order();
//	private double price;
	public Order getOrder() {
		return order;
	}
	public void setOrder(Order order) {
		this.order = order;
	}
	public Integer getOrder_item_id() {
		return order_item_id;
	}
	public void setOrder_item_id(Integer order_item_id) {
		this.order_item_id = order_item_id;
	}
	public Product getProduct() {
		return product;
	}
	public void setProduct(Product product) {
		this.product = product;
	}
	public int getQuality() {
		return quality;
	}
	public void setQuality(int quality) {
		this.quality = quality;
	}
	@Override
	public boolean equals(Object obj) {
		return this.hashCode()==obj.hashCode();
	}
	@Override
	public int hashCode() {
		if(this.order_item_id!=null){
			return this.order_item_id.hashCode();
		}else{
			return this.product.hashCode();
		}
	}
	@Override
	public String toString() {
		// TODO Auto-generated method stub
		return "order_item_id: "+order_item_id
				+"\n quality: "+quality
				+"\n product: "+product
				+"\n ---orderitem end--- \n";
		
	}
	@Override
	public Object clone() throws CloneNotSupportedException {
		// TODO Auto-generated method stub
		OrderItem oi = (OrderItem)super.clone();
		oi.product = (Product)oi.getProduct().clone();
		return oi;
	}
}