namespace IBLL
{
    public interface IMsg
    {
        List<Model.Msg> GetMsgList();
    }
}

namespace BLLA.Abs
{
    /// <summary>
    /// 抽象工厂调用
    /// </summary>
   public class Msg:IBLL.IMsg
    {
       //DALFactory.AbsDALFactory DAL = DALFactory.AbsDALFactory.GetFactory();
       public List<Model.Msg> GetMsgList()
       {
           //return DAL.GetDALMsg().GetMsgList();
           List<Model.Msg> userList = new List<Model.Msg>() 
            {
                new Model.Msg(){MsgId=Guid.NewGuid().ToString()},
                new Model.Msg(){MsgId=Guid.NewGuid().ToString()}
            };
           return userList;
       }

            
    }
}

    public class Msg : IBLL.IMsg
    {
        public List<Model.Msg> GetMsgList()
        {
            //DALFactory.AbsDALFactory DAL = DALFactory.AbsDALFactory.GetFactory();
            //return DAL.GetDALMsg().GetMsgList();
            List<Model.Msg> userList = new List<Model.Msg>() 
            {
                new Model.Msg(){MsgId=Guid.NewGuid().ToString()},
                new Model.Msg(){MsgId=Guid.NewGuid().ToString()}
            };
            return userList;
        }
    }

namespace BLLFactory
{
    /// <summary>
    /// 抽象工厂
    /// 根据配置文件、返回不业务的简单工厂
    /// 不同简单工厂会封装不同业务的数据业务类
    /// 每个简单工厂如：用户业务类、消息业务类
    /// </summary>
    public abstract class AbsBLLFactory
    {
        public static AbsBLLFactory GetFactory()
        {
            string bll = ConfigurationManager.AppSettings["BLL"].ToString();
            switch (bll)
            {
                case "BLLA":
                    return new BLLFactory.BLLFactorA();
                case "BLLB":
                    return new BLLFactory.BLLFactorB();

            }
            return null;
        }
        //public abstract IBLL.IUsers GetBllUser();
        public abstract IBLL.IMsg GetBllMsg();
    }
}

namespace BLLFactory
{   
    /// <summary>
    /// 抽象工厂之实现
    /// 1、业务逻辑A 
    /// 继承抽象工厂类
    /// 返回A业务逻辑的实现类
    /// </summary>
    public class BLLFactorA : AbsBLLFactory
    {

        //public override IBLL.IUsers GetBllUser()
        //{
        //    return new BLLA.Abs.Users();
        //}

        public override IBLL.IMsg GetBllMsg()
        {
            return new BLLB.Abs.Msg();
        }
    }
}

namespace BLLFactory
{
    /// <summary>
    /// 抽象工厂之实现
    /// 1、业务逻辑B
    /// 继承抽象工厂类
    /// 返回B业务逻辑的实现类
    /// </summary>
    public class BLLFactorB : AbsBLLFactory
    {
       
        //public override IBLL.IUsers GetBllUser()
        //{
        //    return new BLLA.Abs.Users();
        //}

        public override IBLL.IMsg GetBllMsg()
        {
            return new BLLB.Abs.Msg();
        }
    }
}

namespace Web
{
    /// 和抽象工厂的区别：
    ///     1、抽象工厂在实现的时候，已经把不同业务的数据处理封装到简单工厂里。然后在通过抽象工厂针对简单工厂进行封装
    ///     2、客户端调用的时候，可以new一个公共的实力，
    ///     3、如。可以“点”出用户实例   “点”出消息实例
    public partial class AbsFactory : System.Web.UI.Page
    {
        protected void Page_Load(object sender, EventArgs e)
        {
            //创建工厂公共对象
            BLLFactory.AbsBLLFactory DAL = BLLFactory.AbsBLLFactory.GetFactory();
          
            ////调用封装的用户接口信息
            //List<Model.Users> listUsers = DAL.GetBllUser().GetUserList();
            //foreach (Model.Users user in listUsers)
            //{
            //    Response.Write("UserId=[" + user.UserId + "]====UserName=[" + user.UserName + "]====AccountName=[" + user.AccountName + "]</br>");
            //}
            //调用封装的消息信息
            List<Model.Msg> listMsg = DAL.GetBllMsg().GetMsgList();

            foreach (Model.Msg msg in listMsg)
            {
                Response.Write("MsgId=[" + msg.MsgId + "]</br>");
            }
        }
    }
}