ordermanager.java

这是尚学堂马士兵老师讲解的网上购物系统

package cn.edu.chu.order;

import java.util.ArrayList;
import java.util.List;

import cn.edu.chu.product.ProductManager;
import cn.edu.chu.product.ProductMySQLDAO;

public class OrderManager {
	private OrderDAO dao;
	private static OrderManager om = null;

	
	static {
		if (om == null) {
			om = new OrderManager();
			om.setDao(new OrderMySQLDAO());
		}
	}

	private OrderManager() {
	}
	
	public static OrderManager getInstance() {
		return om;
	}
	public List<SalesOrder> getOrders(){		
		return dao.getOrders();
	}
	
	public List<SalesOrder> getOrders(int pageNo,int pageSize){		
		return dao.getOrders(pageNo,pageSize);
	}

	public OrderDAO getDao() {
		return dao;
	}

	public void setDao(OrderMySQLDAO dao) {
		this.dao = dao;
	}
	
	public void saveOrder(SalesOrder so){
		dao.saveOrder(so);
	}
	
	public void update(int id){
		dao.update(id);
	}
	
	public List<SalesItem> getOrderItems(int orderId){		
		return dao.getOrderItems(orderId);
	}
}