item.java

shoppingCar 购物车

package com.tarena.shoppingcar.entity;

import java.io.Serializable;

public class Item implements Serializable {

	private static final long serialVersionUID = -5818580061201193904L;

	private int id;

	private Product product = new Product();

	private int amount;

	@SuppressWarnings("unused")
	private double cost;

	public int getAmount() {
		return amount;
	}

	public void setAmount(int amount) {
		this.amount = amount;
	}

	public double getCost() {
		return this.product.getPrice()*this.amount;
	}

	public void setCost(double cost) {
		this.cost = cost;
	}

	public int getId() {
		return id;
	}

	public void setId(int id) {
		this.id = id;
	}

	public Product getProduct() {
		return product;
	}

	public void setProduct(Product product) {
		this.product = product;
	}

	public void addProduct(Product product) {
		if(this.product.equals(product)){
			this.amount = this.amount + 1;
			setCost();
		}else{
			this.product = product;
			this.amount = 1;
			this.cost = product.getPrice();
		}
	}
	
	public void setCost() {
		this.cost = this.product.getPrice()*this.amount;
	}
	
	@Override
	public boolean equals(Object obj) {
		if(obj.getClass() != this.getClass()){
			return false;
		}
		Item item = (Item)obj;
		if(this.product.getId() == item.product.getId()) {
			return true;
		}
		return false;
	}

	@Override
	public int hashCode() {
		return this.id;
	}

}