通用的BLL层及DAL层基类
浏览数：26 /
时间：2015年06月12日
小整的一个通用的BLL层及DAL层基类，可能写得不好，做为代码收集，多多指教
DAL 的接口
public interface IDAL<TEntity> { /// <summary> /// 增加 /// </summary> /// <param name="item"></param> /// <returns></returns> bool Add(TEntity item); /// <summary> /// 修改 /// </summary> /// <param name="item"></param> /// <returns></returns> bool Update(TEntity item); /// <summary> /// 删除 /// </summary> /// <param name="item"></param> /// <returns></returns> bool Delete(TEntity item); /// <summary> /// 删除 /// </summary> /// <param name="objId"></param> /// <returns></returns> bool Delete(object objId); /// <summary> /// 获取实体类 /// </summary> /// <param name="objId"></param> /// <returns></returns> TEntity GetEntity(object objId); /// <summary> /// 获取所有实体集合 /// </summary> /// <returns></returns> IList<TEntity> GetData(); /// <summary> /// 根据条件子句获取实体集合 /// </summary> /// <param name="sqlSubWhere"></param> /// <returns></returns> IList<TEntity> GetData(string sqlSubWhere); }
BLL的接口
public interface IBLL<TEntity> where TEntity:class,new() { /// <summary> /// 增加 /// </summary> /// <param name="item"></param> /// <returns></returns> bool Add(TEntity item); /// <summary> /// 修改 /// </summary> /// <param name="item"></param> /// <returns></returns> bool Update(TEntity item); /// <summary> /// 删除 /// </summary> /// <param name="item"></param> /// <returns></returns> bool Delete(TEntity item); /// <summary> /// 删除 /// </summary> /// <param name="objId"></param> /// <returns></returns> bool Delete(object objId); /// <summary> /// 获取实体类 /// </summary> /// <param name="objId"></param> /// <returns></returns> TEntity GetEntity(object objId); /// <summary> /// 获取所有实体集合 /// </summary> /// <returns></returns> IList<TEntity> GetData(); /// <summary> /// 根据条件子句获取实体集合 /// </summary> /// <param name="sqlSubWhere"></param> /// <returns></returns> IList<TEntity> GetData(string sqlSubWhere); }
DAL，通用基类
/// <summary> /// 数据访问层的基类 /// </summary> /// <typeparam name="TEntity">实体例</typeparam> public abstract class BaseDAL<TEntity> : IDAL<TEntity> { public IDbHelp dbHelp { get; set; } /// <summary> /// 增加对象 /// </summary> /// <param name="item"></param> /// <returns></returns> public abstract bool Add(TEntity item); /// <summary> /// 修改对象 /// </summary> /// <param name="item"></param> /// <returns></returns> public abstract bool Update(TEntity item); /// <summary> /// 删除对象 /// </summary> /// <param name="item"></param> /// <returns></returns> public abstract bool Delete(TEntity item); /// <summary> /// 删除对象 /// </summary> /// <param name="objId"></param> /// <returns></returns> public abstract bool Delete(object objId); /// <summary> /// 获取单个实体 /// </summary> /// <param name="objId"></param> /// <returns></returns> public abstract TEntity GetEntity(object objId); /// <summary> /// 获取所有实体 /// </summary> /// <returns></returns> public abstract IList<TEntity> GetData(); /// <summary> /// 根据条件获取实体 /// </summary> /// <param name="sqlSubWhere"></param> /// <returns></returns> public abstract IList<TEntity> GetData(string sqlSubWhere); }
BLL，通用基类
/// <summary> /// 业务逻辑的基类对象 /// </summary> /// <typeparam name="TDAL">数据访问层</typeparam> /// <typeparam name="TEntity">实体类</typeparam> public class BaseBLL<TDAL, TEntity> : IBLL<TEntity> where TDAL:BaseDAL<TEntity>,new() where TEntity:class,new() { protected IDbHelp db = null; protected TDAL dal; public BaseBLL(IDbHelp dbHelp) { db = dbHelp; dal = new TDAL(); dal.dbHelp = dbHelp; } public bool Add(TEntity item) { return dal.Add(item); } public bool Update(TEntity item) { return dal.Update(item); } public bool Delete(TEntity item) { return dal.Delete(item); } public bool Delete(object objId) { return dal.Delete(objId); } public TEntity GetEntity(object objId) { return dal.GetEntity(objId); } public IList<TEntity> GetData() { return dal.GetData(); } public IList<TEntity> GetData(string sqlSubWhere) { return dal.GetData(sqlSubWhere); } }
调用代码如下：
var bll = new BaseBLL<Cfg_Codes_DAL, Cfg_Codes_Entity>(dbHelp);
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