在EF的code frist下写稳健的权限管理系统：仓储设计（三）

public class BaseRepository<T>:IBaseRepository<T> where T : class

    {

        protected EfConnection DbContext = ContextFactory.GetCurrentContext();



        public bool Insert(T entity)

        {

            DbContext.Set<T>().Add(entity);

            return DbContext.SaveChanges()>0;

        }



        public bool InsertBatch(List<T> datas)

        {

            DbContext.Set<T>().AddRange(datas);

            return DbContext.SaveChanges() > 0;

        }



        public void Update(T entity)

        {

            DbContext.Set<T>().Attach(entity);

            DbContext.Entry<T>(entity).State = EntityState.Modified;

            DbContext.SaveChanges();

        }



        public void Delete(Expression<Func<T, bool>> expression)

        {

            var reDeleteds = DbContext.Set<T>().Where(expression);

            if (!reDeleteds.Any()) return;



            foreach (var reDeleted in reDeleteds)

            {

                DbContext.Entry<T>(reDeleted).State = EntityState.Deleted;

            }



            DbContext.SaveChanges();

        }



        public IQueryable<T> GetAll()

        {

            return DbContext.Set<T>().AsQueryable();

        }



        public T Find(Expression<Func<T, bool>> expression)

        {

            return DbContext.Set<T>().FirstOrDefault(expression);

        }

    }

BaseRepository

public interface IBaseRepository<T> where T : class

    {

        /// <summary>

        /// 添加

        /// </summary>

        /// <param name="entity">数据实体</param>

        /// <returns>添加后的数据实体</returns>

        bool Insert(T entity);



        /// <summary>

        /// 批量添加

        /// </summary>

        /// <param name="datas"></param>

        /// <returns></returns>

        bool InsertBatch(List<T> datas);



        /// <summary>

        /// 更新

        /// </summary>

        /// <param name="entity">数据实体</param>

        /// <returns>是否成功</returns>

        void Update(T entity);



        /// <summary>

        /// 删除

        /// </summary>

        /// <param name="expression">删除条件</param>

        /// <returns>是否成功</returns>

        void Delete(Expression<Func<T, bool>> expression);



        /// <summary>

        /// 获取所有

        /// </summary>

        /// <returns></returns>

        IQueryable<T> GetAll();



        /// <summary>

        /// 查找数据

        /// </summary>

        /// <param name="expression">查询条件</param>

        /// <returns>实体</returns>

        T Find(Expression<Func<T, bool>> expression);

    }

IBaseRepository

基础仓储的接口和EF中的实现