基于IBatisNet（MyBatis.Net）的Repository

说明什么的就不写了，直接上代码，如果不了解Repository，那就先去百度或者谷歌下……

IRepository接口约束

    using IBatisNet.DataAccess.Interfaces;
    public interface IRepository<T> : IDao
        where T : class
    {
        /// <summary>
        /// 新增
        /// </summary>
        /// <param name="entity"></param>
        /// <returns></returns>
        bool Insert(T entity);
        /// <summary>
        /// 编辑
        /// </summary>
        /// <param name="entity"></param>
        /// <returns></returns>
        bool Update(T entity);
        /// <summary>
        /// 删除
        /// </summary>
        /// <param name="entity"></param>
        /// <returns></returns>
        bool Delete(object entity);
        /// <summary>
        /// 单个查询
        /// </summary>
        /// <param name="entity"></param>
        /// <returns></returns>
        T QueryByKey(object entity);
        /// <summary>
        /// 查找数据集合
        /// </summary>
        /// <param name="searchEntity"></param>
        /// <param name="totalCount"></param>
        /// <returns></returns>
        IList<T> FindAll<T1>(T1 searchEntity, out int totalCount)
            where T1 : BaseQuery;
    }

BaseQuery查询实体

    [Serializable]
    public class BaseQuery
    {
        public int StartIndex
        {
            get
            {
                if (this.PageSize <= 0 || this.PageIndex < 0)
                {
                    return 0;
                }
                return this.PageSize * this.PageIndex;
            }
        }
        public int EndIndex
        {
            get
            {
                if (this.PageSize <= 0 || this.PageIndex < 0)
                {
                    return 0;
                }
                return this.PageSize * this.PageIndex + this.PageSize;
            }
        }
        public int PageSize { get; set; }
        /// <summary>
        /// 页码，从0开始计算
        /// </summary>
        public int PageIndex { get; set; }
        /// <summary>
        /// 修正页码，如果传入的页码索引大于最大页码数，将页码修正为最后一页
        /// </summary>
        /// <param name="totalCount"></param>
        public void FixPageIndex(int totalCount)
        {
            if (this.PageIndex < 0 || this.PageSize <= 0 || totalCount <= 0)
            {
                this.PageIndex = 0;
                return;
            }
            if (this.StartIndex >= totalCount)
            {
                this.PageIndex = totalCount / this.PageSize;
                if (totalCount % this.PageSize > 0)
                {
                    this.PageIndex++;
                }
                this.PageIndex--;
            }
        }
    }

Repository抽象基类，所有定义的抽象属性均为SqlMap中statements节点sql对应的id，需在子类中实际指定

    using IBatisNet.DataMapper;
    using System.Linq.Expressions;

    public abstract class Repository<T> : IRepository<T>
        where T : class
    {
        protected virtual ISqlMapper Mapper
        {
            get { return SqlMapperHelper.GetMapper(); }
        }
        /// <summary>
        /// 新增
        /// </summary>
        protected abstract string InsertStatement { get; }
        /// <summary>
        /// 编辑
        /// </summary>
        protected abstract string UpdateStatement { get; }
        /// <summary>
        /// 删除
        /// </summary>
        protected abstract string DeleteStatement { get; }
        /// <summary>
        /// 单查
        /// </summary>
        protected abstract string QueryObjectStatement { get; }
        /// <summary>
        /// Count
        /// </summary>
        protected abstract string QueryCountStatement { get; }
        /// <summary>
        /// 分页查询
        /// </summary>
        protected abstract string QueryPagedListStatement { get; }
        /// <summary>
        /// Full Query
        /// </summary>
        protected abstract string QueryAllStatement { get; }

        public virtual bool Insert(T entity)
        {
            return this.Mapper.Insert(this.InsertStatement, entity) != null;
        }

        public virtual bool Update(T entity)
        {
            return this.Mapper.Update(this.UpdateStatement, entity) > 0;
        }

        public virtual bool Delete(object entity)
        {
            return this.Mapper.Delete(this.DeleteStatement, entity) > 0;
        }

        public virtual T QueryByKey(object entity)
        {
            return this.Mapper.QueryForObject<T>(this.QueryObjectStatement, entity);
        }

        public virtual IList<T> FindAll<T1>(T1 searchEntity, out int totalCount) where T1 : BaseQuery
        {
            return this.FindAll<T, T1>(searchEntity, this.QueryCountStatement, this.QueryPagedListStatement,
                this.QueryAllStatement, out totalCount);
        }

        /// <summary>
        /// 分页查询（如果searchEntity没有指定或者指定Size,Index不正确，则查询所有数据）
        /// </summary>
        /// <typeparam name="T1"></typeparam>
        /// <typeparam name="T2"></typeparam>
        /// <param name="searchEntity"></param>
        /// <param name="queryCountStatement"></param>
        /// <param name="queryPagedListStatement"></param>
        /// <param name="queryAllStatement"></param>
        /// <param name="totalCount"></param>
        /// <returns></returns>
        protected IList<T1> FindAll<T1, T2>(T2 searchEntity,
            string queryCountStatement, string queryPagedListStatement, string queryAllStatement,
            out int totalCount) where T2 : BaseQuery
        {
            IList<T1> list = null;
            if (searchEntity != null && searchEntity.PageIndex >= 0 && searchEntity.PageSize > 0)
            {
                //分页
                totalCount = this.Mapper.QueryForObject<int>(queryCountStatement, searchEntity);
                searchEntity.FixPageIndex(totalCount);//修正页码
                if (totalCount > 0)
                {
                    list = this.Mapper.QueryForList<T1>(queryPagedListStatement, searchEntity);
                }
            }
            else
            {
                //获取所有数据
                list = this.Mapper.QueryForList<T1>(queryAllStatement, searchEntity);
                totalCount = list.Count;
            }
            return list;
        }

        /// <summary>
        /// 单数据库事务
        /// </summary>
        /// <param name="fun"></param>
        /// <returns></returns>
        protected bool Transaction(Func<bool> fun)
        {
            this.Mapper.BeginTransaction();
            try
            {
                bool result = fun();
                if (result)
                {
                    this.Mapper.CommitTransaction();
                }
                else
                {
                    this.Mapper.RollBackTransaction();
                }
                return result;
            }
            catch
            {
                this.Mapper.RollBackTransaction();
                //TODO:log
                throw;
            }
            finally
            {
            }
        }
    }

SqlMapperHelper帮助类，此处暂时随便写的，如果多数据库，此部分可以与Repository部分联合调整

    internal static class SqlMapperHelper
    {
        public static ISqlMapper GetMapper()
        {
            return Mapper.Instance();
        }
    }

实际的使用例子，IMenu继承自IRepository<Menu>，接口声明就不贴了，只贴实现类代码

    public class MenuDataAccess : Repository<Menu>, IMenu
    {
        #region Repository
        protected override string InsertStatement
        {
            get { return "RBAC.insertMenu"; }
        }

        protected override string UpdateStatement
        {
            get { return "RBAC.updateMenu"; }
        }

        protected override string DeleteStatement
        {
            get { return "RBAC.deleteMenu"; }
        }

        protected override string QueryObjectStatement
        {
            get { return null; }
        }

        protected override string QueryCountStatement
        {
            get { return null; }
        }

        protected override string QueryPagedListStatement
        {
            get { return null; }
        }

        protected override string QueryAllStatement
        {
            get { return null; }
        }
        #endregion

        #region IMenu
        public MenuView GetMenu(int moduleID)
        {
            return this.Mapper.QueryForObject<MenuView>("RBAC.selectMenuView", moduleID);
        }

        public IList<MenuView> FindAllView(int appID)
        {
            return this.Mapper.QueryForList<MenuView>("RBAC.selectMenuViews", appID);
        }

        public bool AddMenu(Module module, Menu menu)
        {
            return this.Transaction(() => new ModuleDataAccess().Insert(module) && this.FillInsertMenu(module, menu));
        }

        private bool FillInsertMenu(Module module, Menu menu)
        {
            menu.ModuleID = module.ModuleID;
            return this.Insert(menu);
        }

        public bool UpdateMenu(Module module, Menu menu)
        {
            return this.Transaction(() => new ModuleDataAccess().Update(module) && this.Update(menu));
        }

        public bool DeleteMenu(int moduleID)
        {
            return this.Transaction(() => this.Delete(moduleID) && new ModuleDataAccess().Delete(moduleID));
        }

        public bool UpdateSortNum(int moduleID, byte sortNum, int? parentModuleID)
        {
            return this.Mapper.Update("RBAC.updateMenuSortNum", new { ModuleID = moduleID, SortNum = sortNum, ParentModuleID = parentModuleID }) > 0;
        }
        #endregion
    }