跟我学MVC系列（Repository模式、LINQ、EF、IOC框架Castle、JQuery、AJAX）（五）Models（ORM、Repository模式、分页）

现在是凌晨12点半拉，夜深人静，趁我还没有睡意，现在继续。
上篇我们完成了Resposity 的很大一部分啦，现在我们需要创建一个实体工厂，什么是实体工厂呢？就是能够生产实体的工厂呗，呵呵。你看看代码就知道啦。我们在Models文件夹下建立一个EntityFactory.cs 类和它的接口类IEntityFactory.cs，代码如下：

Code
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using PBAccount.Repository;

namespace PBAccount.Models
{
   public interface IEntityFactory
    {
       IUser CreateUser();
       IAccount CreateAccount();
       IAccountType CreateAccountType();
    }
}

using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using PBAccount.Repository;

namespace PBAccount.Models
{
    public class EntityFactory:IEntityFactory
    {

        #region IEntityFactory 成员

        public IUser CreateUser()
        {
            return new SQLUser();
        }

        public IAccount CreateAccount()
        {
            return new SQLAccount();
        }

        public IAccountType CreateAccountType()
        {
            return new SQLAccountType();
        }

        #endregion
    }
}

是不是很简单，至于为什么要创建这个实体工厂，我在以后会慢慢的解释，其实，不用我解释，你慢慢也会发现它的用途啦。
以上呢，我们就把底层（所有的功能）都给实现啦，如果在以后发现还需要新的功能，到时候再添加吧。根据Resposity  模式的描述，我们还要继续写向Controller 曾服务的接口，也就是Service 层啦。这样，就再一次实现了与数据库的分离，上下层之间的耦合也非常小。好，现在我们与Models平级创建一个新文件夹Service，在Service 下定义三个接口，IUserService， IAccountService， IAccountTypeService 这三个接口。代码如下：

Code
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using PBAccount.Repository;
using PBAccount.Models;

namespace PBAccount.Service
{
   public interface IAccountService
    {
       IAccount Create();
       void Add(IAccount account);

       void Update(IAccount account);

       void Del(IAccount account);

       IAccount Get(Guid userId);

       IList<IAccount> GetAll();

        int CountAccounts(ICriteria criteria);

        IList<IAccount> GetAccounts(int pageIndex, int pageSize, ICriteria criteria, Order orderCriteria);
    }
}

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using PBAccount.Repository;
using PBAccount.Models;

namespace PBAccount.Service
{
    interface IAccountTypeService
    {
        IAccountType Create();
        void Add(IAccountType accountType);

        void Update(IAccountType accountType);

        void Del(IAccountType accountType);

        IAccountType Get(Guid userId);

        IList<IAccountType> GetAll();

        int CountAccountType(ICriteria criteria);

        IList<IAccountType> GetEquipments(int pageIndex, int pageSize, ICriteria criteria, Order orderCriteria);
    }
}

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using PBAccount.Repository;
using PBAccount.Models;

namespace PBAccount.Service
{
   public interface IUserService
    {
       IUser Create();
       void Add(IUser user);

       void Update(IUser user);

       void Del(IUser user);

       IUser Get(Guid userId);

       IList<IUser> GetAll();

       int CountUsers(ICriteria criteria);

       IList<IUser> GetUsers(int pageIndex, int pageSize, ICriteria criteria, Order orderCriteria);
    }
}

下面是对这三个接口的实现：

Code
using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using PBAccount.Repository;
using PBAccount.Models;

namespace PBAccount.Service
{
    public class AccountService:IAccountService
    {
        IEntityFactory factory;
        IAccountRepository accountRepository;
        public AccountService(IEntityFactory factory, IAccountRepository accountRepository)
        {
            this.factory = factory;
            this.accountRepository = accountRepository;
        }
        #region IAccountService 成员

        public IAccount Create()
        {
            //现在明白IEntityFactory 的作用了吧
            return factory.CreateAccount();
        }

        //我这儿只是简单的进行添加操作，如果在添加的时候想加入其他的东西，比如验证等，你完全可以在这儿丰富这些代码
        public void Add(IAccount account)
        {
            try
            {
                accountRepository.Add(account);
            }
            catch (Exception ex)
            {
                throw ex;
            }
        }

        public void Update(IAccount account)
        {
            try
            {
                accountRepository.Update(account);
            }
            catch (Exception ex)
            {
                throw ex;
            }
        }

        public void Del(IAccount account)
        {
            try
            {
                accountRepository.Del(account);
            }
            catch (Exception ex)
            {
                throw ex;
            }
        }

        public IAccount Get(Guid userId)
        {
            try
            {
                return accountRepository.Find(userId);
            }
            catch (Exception ex)
            {
                throw ex;
            }
        }

        public IList<IAccount> GetAll()
        {
            try
            {
                return accountRepository.FindAll();
            }
            catch (Exception ex)
            {
                throw ex;
            }
        }

        public int CountUsers(ICriteria criteria)
        {
            try
            {
                return accountRepository.Count(criteria);
            }
            catch (Exception ex)
            {
                throw ex;
            }
        }

        public IList<IAccount> GetUsers(int pageIndex, int pageSize, ICriteria criteria, Order orderCriteria)
        {
            try
            {
                return accountRepository.Find(criteria, pageIndex, pageSize, orderCriteria);
            }
            catch (Exception ex)
            {
                throw ex;
            }
        }

        #endregion
    }
}

using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using PBAccount.Repository;
using PBAccount.Models;

namespace PBAccount.Service
{
    public class AccountTypeService:IAccountTypeService
    {
                IEntityFactory factory;
        IAccountTypeRepository accountTypeRepository;
        public AccountTypeService(IEntityFactory factory, IAccountTypeRepository accountTypeRepository)
        {
            this.factory = factory;
            this.accountTypeRepository = accountTypeRepository;
        }
        #region IAccountTypeService 成员

        public IAccountType Create()
        {
            //现在明白IEntityFactory 的作用了吧
            return factory.CreateAccountType();
        }

        //我这儿只是简单的进行添加操作，如果在添加的时候想加入其他的东西，比如验证等，你完全可以在这儿丰富这些代码
        public void Add(IAccountType accountType)
        {
            try
            {
                accountTypeRepository.Add(accountType);
            }
            catch (Exception ex)
            {
                throw ex;
            }
        }

        public void Update(IAccountType accountType)
        {
            try
            {
                accountTypeRepository.Update(accountType);
            }
            catch (Exception ex)
            {
                throw ex;
            }
        }

        public void Del(IAccountType accountType)
        {
            try
            {
                accountTypeRepository.Del(accountType);
            }
            catch (Exception ex)
            {
                throw ex;
            }
        }

        public IAccountType Get(Guid userId)
        {
            try
            {
                return accountTypeRepository.Find(userId);
            }
            catch (Exception ex)
            {
                throw ex;
            }
        }

        public IList<IAccountType> GetAll()
        {
            try
            {
                return accountTypeRepository.FindAll();
            }
            catch (Exception ex)
            {
                throw ex;
            }
        }

        public int CountUsers(ICriteria criteria)
        {
            try
            {
                return accountTypeRepository.Count(criteria);
            }
            catch (Exception ex)
            {
                throw ex;
            }
        }

        public IList<IAccountType> GetUsers(int pageIndex, int pageSize, ICriteria criteria, Order orderCriteria)
        {
            try
            {
                return accountTypeRepository.Find(criteria, pageIndex, pageSize, orderCriteria);
            }
            catch (Exception ex)
            {
                throw ex;
            }
        }
        #endregion
    }
}

using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using PBAccount.Repository;
using PBAccount.Models;

namespace PBAccount.Service
{
    public class UserService:IUserService
    {
        IEntityFactory factory;
        IRepository<IUser> userRepository;
        public UserService(IEntityFactory factory,IUserRepository userRepository)
        {
            this.factory = factory;
            this.userRepository = userRepository;
        }
        #region IUserService 成员

        public IUser Create()
        {
            //现在明白IEntityFactory 的作用了吧
            return factory.CreateUser();
        }

        //我这儿只是简单的进行添加操作，如果在添加的时候想加入其他的东西，比如验证等，你完全可以在这儿丰富这些代码
        public void Add(IUser user)
        {
            try
            {
                userRepository.Add(user);
            }
            catch (Exception ex)
            {
                throw ex;
            }
        }

        public void Update(IUser user)
        {
            try
            {
                userRepository.Update(user);
            }
            catch (Exception ex)
            {
                throw ex;
            }
        }

        public void Del(IUser user)
        {
            try
            {
                userRepository.Del(user);
            }
            catch (Exception ex)
            {
                throw ex;
            }
        }

        public IUser Get(Guid userId)
        {
            try
            {
                return userRepository.Find(userId);
            }
            catch (Exception ex)
            {
                throw ex;
            }
        }

        public IList<IUser> GetAll()
        {
            try
            {
                return userRepository.FindAll();
            }
            catch (Exception ex)
            {
                throw ex;
            }
        }

        public int CountUsers(ICriteria criteria)
        {
            try
            {
                return userRepository.Count(criteria);
            }
            catch (Exception ex)
            {
                throw ex;
            }
        }

        public IList<IUser> GetUsers(int pageIndex, int pageSize, ICriteria criteria, Order orderCriteria)
        {
            try
            {
                return userRepository.Find(criteria,pageIndex,pageSize,orderCriteria);
            }
            catch (Exception ex)
            {
                throw ex;
            }
        }

        #endregion
    }
}

好啦，现在Models 层基本完成啦，下篇就开始Controlers 和 Views 。