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
}基于IBatisNet（MyBatis.Net）的Repository
原文地址：http://blog.csdn.net/starfd/article/details/43482263
