第一个NHibernate应用程序（二）

using NHibernate;using Shop.Domain.Entities;using System;using System.Collections.Generic;using System.Linq;using System.Linq.Expressions;namespace Shop.Data{ ???public class CartData ???{ ???????/// <summary> ???????/// 根据条件得到数据集合 ???????/// </summary> ???????/// <param name="where"></param> ???????/// <returns></returns> ???????public IList<Cart> GetCartList(Expression<Func<Cart,bool>> where) ???????{ ???????????try ???????????{ ???????????????using (ISession session = NHibernateHelper.SessionFactory.OpenSession()) ???????????????{ ???????????????????return session.Query<Cart>().Select(x=>new Cart ???????????????????{ ???????????????????????Id = x.Id, ???????????????????????Name = x.Name ???????????????????}).Where(where).ToList(); ???????????????} ???????????} ???????????catch (Exception ex) ???????????{ ???????????????throw ex; ???????????} ???????} ???????/// <summary> ???????/// 获取单条记录 ???????/// </summary> ???????/// <param name="id"></param> ???????/// <returns></returns> ???????public Cart GetCartById(int id) ???????{ ???????????using (ISession session = NHibernateHelper.SessionFactory.OpenSession()) ???????????{ ???????????????Cart cart = session.Get<Cart>(id); ???????????????return cart; ???????????} ???????} ???????/// <summary> ???????/// 添加数据 ???????/// </summary> ???????/// <param name="cart"></param> ???????/// <returns></returns> ???????public bool Insert(Cart cart) ???????{ ???????????using (var session = NHibernateHelper.SessionFactory.OpenSession()) ???????????{ ???????????????var identifier = session.Save(cart); ???????????????session.Flush(); ???????????????return string.IsNullOrEmpty(identifier.ToString()); ???????????} ???????} ???????/// <summary> ???????/// 更新数据 ???????/// </summary> ???????/// <param name="cart"></param> ???????public void Update(Cart cart) ???????{ ???????????using (var session = NHibernateHelper.SessionFactory.OpenSession()) ???????????{ ???????????????session.SaveOrUpdate(cart); ???????????????session.Flush(); ???????????} ???????} ???????/// <summary> ???????/// 删除数据 ???????/// </summary> ???????/// <param name="id"></param> ???????public void Delete(int id) ???????{ ???????????using (var session = NHibernateHelper.SessionFactory.OpenSession()) ???????????{ ???????????????var cart = session.Get<Cart>(id); ???????????????session.Delete(cart); ???????????????session.Flush(); ???????????} ???????} ???}}