salesorderservice.java

基于mysql5.0完成的shopping网站后台

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package com.shopping.model;

import com.shopping.dao.SalesOrderMysqlDAO;
import java.util.List;

/**
 *
 * @author ruirui
 */
public class SalesOrderService {
private static SalesOrderService instance = null;
    private static SalesOrderMysqlDAO dao = null;
    
    

    public static SalesOrderMysqlDAO getDao() {
        return dao;
    }

    public static void setDao(SalesOrderMysqlDAO dao) {
        SalesOrderService.dao = dao;
    }

    public static SalesOrderService getInstance() {
        return instance;
    }

    public static void setInstance(SalesOrderService instance) {
        SalesOrderService.instance = instance;
    }

    //单例模式
    static {
        if (instance == null) {
            instance = new SalesOrderService();
            instance.setDao(new SalesOrderMysqlDAO());
        }
    }
    
    public void save(SalesOrder so){
      dao.save(so);
    }
    
   public int getOrders(List<SalesOrder> list, int pageNo, int pageSize) {
      return dao.getOrders(list, pageNo, pageSize);
   }
}