工作单元模式

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Transactions;
using UnitOfWork;

namespace UnitOfWork
{
    public interface IUnitOfWorkRepository
    {
        void NewItem(object item);
        void UpdatedItem(object item);
        void DeletedItem(object item);
    }
    public interface IUnitOfWork
    {
        void RegisterAdded(object entity, IUnitOfWorkRepository repository);
        void RegisterChanged(object entity, IUnitOfWorkRepository repository);
        void RegisterRemoved(object entity, IUnitOfWorkRepository repository);
        void Commit();
    }
    public class UnitOfWork : IUnitOfWork
    {
        private Dictionary<object, IUnitOfWorkRepository> addedEntities;
        private Dictionary<object, IUnitOfWorkRepository> changedEntities;
        private Dictionary<object, IUnitOfWorkRepository> deletedEntities;

        ///<summary>
        /// 实例化工作单元
        ///</summary>
        public UnitOfWork()
        {
            this.addedEntities = new Dictionary<object,
            IUnitOfWorkRepository>();
            this.changedEntities = new Dictionary<object,
            IUnitOfWorkRepository>();
            this.deletedEntities = new Dictionary<object,
            IUnitOfWorkRepository>();
        }

        #region IUnitOfWork 方法

        ///<summary>
        /// 注册添加操作
        ///</summary>
        ///<param name="entity"></param>
        ///<param name="repository"></param>
        public void RegisterAdded(object entity, IUnitOfWorkRepository repository)
        {
            this.addedEntities.Add(entity, repository);
        }
        ///<summary>
        /// 注册更改操作
        ///</summary>
        ///<param name="entity"></param>
        ///<param name="repository"></param>
        public void RegisterChanged(object entity, IUnitOfWorkRepository repository)
        {
            this.changedEntities.Add(entity, repository);
        }
        ///<summary>
        /// 注册删除操作
        ///</summary>
        ///<param name="entity"></param>
        ///<param name="repository"></param>
        public void RegisterRemoved(object entity, IUnitOfWorkRepository repository)
        {
            this.deletedEntities.Add(entity, repository);
        }

        ///<summary>
        /// 执行内存列表保存的操作
        ///</summary>
        public void Commit()
        {
            using (TransactionScope scope = new TransactionScope())
            {
                foreach (object entity in this.deletedEntities.Keys)
                {
                    this.deletedEntities[entity].DeletedItem(entity);
                }

                foreach (object entity in this.addedEntities.Keys)
                {
                    this.addedEntities[entity].NewItem(entity);
                }

                foreach (object entity in this.changedEntities.Keys)
                {
                    this.changedEntities[entity].UpdatedItem(entity);
                }

                scope.Complete();
            }

            this.deletedEntities.Clear();
            this.addedEntities.Clear();
            this.changedEntities.Clear();
        }

        #endregion
    }
    public class TestRepository : IUnitOfWorkRepository
    {
        private IUnitOfWork unitOfWork;
        private IUnitOfWork TestUnitOfWork
        {
            get { return this.unitOfWork; }
        }

        public TestRepository(IUnitOfWork unitOfWork)
        {
            this.unitOfWork = unitOfWork;

        }
        public void Add(object _object)
        {
            TestUnitOfWork.RegisterAdded(_object, this);

            Console.WriteLine("注册添加数据" + _object);

        }
        public void Delete(object _object)
        {
            TestUnitOfWork.RegisterRemoved(_object, this);
            Console.WriteLine("注册删除数据" + _object);
        }
        public void update(object _object)
        {
            TestUnitOfWork.RegisterChanged(_object, this);
            Console.WriteLine("注册更新数据" + _object);
        }

        public void NewItem(object _object)
        {
            Console.WriteLine("执行添加数据" + _object);
        }

        public void UpdatedItem(object _object)
        {
            Console.WriteLine("执行更新数据" + _object);
        }

        public void DeletedItem(object _object)
        {
            Console.WriteLine("执行删除数据" + _object);
        }

    }
    public class TestServer
    {
        private static IUnitOfWork unitOfWork;
        private static TestRepository _TestRepository;
        static TestServer()
        {
            TestServer.unitOfWork = new UnitOfWork();
            _TestRepository = new TestRepository(unitOfWork);

        }
        public static void Add()
        {
            _TestRepository.Add(1);
            _TestRepository.Add(2);
            _TestRepository.Add(3);
            _TestRepository.Add(4);
            _TestRepository.Add(5);
            unitOfWork.Commit();
        }

        public static void Add(object _object)
        {
            _TestRepository.Add(_object);
            _TestRepository.Delete(_object);
            _TestRepository.update(_object);
            unitOfWork.Commit();

        }
        public static void Delete(object _object)
        {
            _TestRepository.Delete(_object);
            unitOfWork.Commit();
        }
        public static void Update(object _object)
        {
            _TestRepository.update(_object);
            unitOfWork.Commit();
        }

    }
}
namespace ConsoleApplication3
{

    class Program
    {
        static void Main(string[] args)
        {

            TestServer.Add(1);
            Console.WriteLine("----------------------------");
            TestServer.Add();

            Console.ReadKey();

        }
    }
}

原文地址：https://www.cnblogs.com/kexb/p/9095489.html