/// <summary> /// 判断当前节点是否已存在相同的 /// </summary> /// <param name="entity"></param> /// <returns></returns> public int ExistNum(ProductSimilarHotEntity entity) { ///id=0,判断总数,ID>0判断除自己之外的总数 string sql = @"Select count(1) from dbo.[ProductSimilarHot] WITH(NOLOCK) "; string where = "where "; if (entity.Id == 0) { } else { } sql = sql + where; DbCommand cmd = db.GetSqlStringCommand(sql); if (entity.Id > 0) { db.AddInParameter(cmd, "@Id", DbType.Int32, entity.Id); } object identity = db.ExecuteScalar(cmd); if (identity == null || identity == DBNull.Value) { return(0); } return(Convert.ToInt32(identity)); }
/// <summary> /// 根据主键值更新记录的全部字段(注意:该方法不会对自增字段、timestamp类型字段以及主键字段更新!如果要更新主键字段,请使用Update方法)。 /// 如果数据库有数据被更新了则返回True,否则返回False /// </summary> /// <param name="db">数据库操作对象</param> /// <param name="productSimilarHot">待更新的实体对象</param> public int UpdateProductSimilarHot(ProductSimilarHotEntity entity) { string sql = @" UPDATE dbo.[ProductSimilarHot] SET [ClassId]=@ClassId,[ProductId]=@ProductId,[SalesNum]=@SalesNum,[Sort]=@Sort WHERE [Id]=@id"; DbCommand cmd = db.GetSqlStringCommand(sql); db.AddInParameter(cmd, "@Id", DbType.Int32, entity.Id); db.AddInParameter(cmd, "@ClassId", DbType.Int32, entity.ClassId); db.AddInParameter(cmd, "@ProductId", DbType.Int32, entity.ProductId); db.AddInParameter(cmd, "@SalesNum", DbType.Int32, entity.SalesNum); db.AddInParameter(cmd, "@Sort", DbType.Int32, entity.Sort); return(db.ExecuteNonQuery(cmd)); }
/// <summary> /// 插入一条记录到表ProductSimilarHot,如果表中存在自增字段,则返回值为新记录的自增字段值,否则返回0。 /// 该方法提供给界面等UI层调用 /// </summary> /// <param name="productSimilarHot">要添加的ProductSimilarHot数据实体对象</param> public int AddProductSimilarHot(ProductSimilarHotEntity productSimilarHot) { if (productSimilarHot.Id > 0) { return(UpdateProductSimilarHot(productSimilarHot)); } else if (ProductSimilarHotBLL.Instance.IsExist(productSimilarHot)) { return((int)CommonStatus.ADD_Fail_Exist); } else { return(ProductSimilarHotDA.Instance.AddProductSimilarHot(productSimilarHot)); } }
/// <summary> /// 插入一条记录到表ProductSimilarHot,如果表中存在自增字段,则返回值为新记录的自增字段值,否则返回0 /// </summary> /// <param name="db">数据库操作对象</param> /// <param name="productSimilarHot">待插入的实体对象</param> public int AddProductSimilarHot(ProductSimilarHotEntity entity) { string sql = @"insert into ProductSimilarHot( [ClassId],[ProductId],[SalesNum],[Sort])VALUES ( @ClassId,@ProductId,@SalesNum,@Sort); SELECT SCOPE_IDENTITY();" ; DbCommand cmd = db.GetSqlStringCommand(sql); db.AddInParameter(cmd, "@ClassId", DbType.Int32, entity.ClassId); db.AddInParameter(cmd, "@ProductId", DbType.Int32, entity.ProductId); db.AddInParameter(cmd, "@SalesNum", DbType.Int32, entity.SalesNum); db.AddInParameter(cmd, "@Sort", DbType.Int32, entity.Sort); object identity = db.ExecuteScalar(cmd); if (identity == null || identity == DBNull.Value) { return(0); } return(Convert.ToInt32(identity)); }
/// <summary> /// 读取记录列表。 /// </summary> /// <param name="db">数据库操作对象</param> /// <param name="columns">需要返回的列,不提供任何列名时默认将返回所有列</param> public IList <ProductSimilarHotEntity> GetProductSimilarHotList(int pagesize, int pageindex, ref int recordCount) { string sql = @"SELECT [Id],[ClassId],[ProductId],[SalesNum],[Sort] FROM (SELECT ROW_NUMBER() OVER (ORDER BY Id desc) AS ROWNUMBER, [Id],[ClassId],[ProductId],[SalesNum],[Sort] from dbo.[ProductSimilarHot] WITH(NOLOCK) WHERE 1=1 ) as temp where rownumber BETWEEN ((@PageIndex - 1) * @PageSize + 1) AND @PageIndex * @PageSize" ; string sql2 = @"Select count(1) from dbo.[ProductSimilarHot] with (nolock) "; IList <ProductSimilarHotEntity> entityList = new List <ProductSimilarHotEntity>(); DbCommand cmd = db.GetSqlStringCommand(sql); db.AddInParameter(cmd, "@PageIndex", DbType.Int32, pageindex); db.AddInParameter(cmd, "@PageSize", DbType.Int32, pagesize); using (IDataReader reader = db.ExecuteReader(cmd)) { while (reader.Read()) { ProductSimilarHotEntity entity = new ProductSimilarHotEntity(); entity.Id = StringUtils.GetDbInt(reader["Id"]); entity.ClassId = StringUtils.GetDbInt(reader["ClassId"]); entity.ProductId = StringUtils.GetDbInt(reader["ProductId"]); entity.SalesNum = StringUtils.GetDbInt(reader["SalesNum"]); entity.Sort = StringUtils.GetDbInt(reader["Sort"]); entityList.Add(entity); } } cmd = db.GetSqlStringCommand(sql2); using (IDataReader reader = db.ExecuteReader(cmd)) { if (reader.Read()) { recordCount = StringUtils.GetDbInt(reader[0]); } else { recordCount = 0; } } return(entityList); }
/// <summary> /// 读取记录列表。 /// </summary> /// <param name="db">数据库操作对象</param> /// <param name="columns">需要返回的列,不提供任何列名时默认将返回所有列</param> public IList <ProductSimilarHotEntity> GetProductSimilarHotAll() { string sql = @"SELECT [Id],[ClassId],[ProductId],[SalesNum],[Sort] from dbo.[ProductSimilarHot] WITH(NOLOCK) "; IList <ProductSimilarHotEntity> entityList = new List <ProductSimilarHotEntity>(); DbCommand cmd = db.GetSqlStringCommand(sql); using (IDataReader reader = db.ExecuteReader(cmd)) { while (reader.Read()) { ProductSimilarHotEntity entity = new ProductSimilarHotEntity(); entity.Id = StringUtils.GetDbInt(reader["Id"]); entity.ClassId = StringUtils.GetDbInt(reader["ClassId"]); entity.ProductId = StringUtils.GetDbInt(reader["ProductId"]); entity.SalesNum = StringUtils.GetDbInt(reader["SalesNum"]); entity.Sort = StringUtils.GetDbInt(reader["Sort"]); entityList.Add(entity); } } return(entityList); }
/// <summary> /// 根据主键值读取记录。如果数据库不存在这条数据将返回null /// </summary> /// <param name="db">数据库操作对象</param> /// <param name="columns">需要返回的列,不提供任何列名时默认将返回所有列</param> public ProductSimilarHotEntity GetProductSimilarHot(int id) { string sql = @"SELECT [Id],[ClassId],[ProductId],[SalesNum],[Sort] FROM dbo.[ProductSimilarHot] WITH(NOLOCK) WHERE [Id]=@id" ; DbCommand cmd = db.GetSqlStringCommand(sql); db.AddInParameter(cmd, "@Id", DbType.Int32, id); ProductSimilarHotEntity entity = new ProductSimilarHotEntity(); using (IDataReader reader = db.ExecuteReader(cmd)) { if (reader.Read()) { entity.Id = StringUtils.GetDbInt(reader["Id"]); entity.ClassId = StringUtils.GetDbInt(reader["ClassId"]); entity.ProductId = StringUtils.GetDbInt(reader["ProductId"]); entity.SalesNum = StringUtils.GetDbInt(reader["SalesNum"]); entity.Sort = StringUtils.GetDbInt(reader["Sort"]); } } return(entity); }
/// <summary> /// 更新一条ProductSimilarHot记录。 /// 该方法提供给界面等UI层调用 /// </summary> /// <param name="productSimilarHot">待更新的实体对象</param> /// <param name="columns">要更新的列名,不提供任何列名时默认将更新主键之外的所有列</param> public int UpdateProductSimilarHot(ProductSimilarHotEntity productSimilarHot) { return(ProductSimilarHotDA.Instance.UpdateProductSimilarHot(productSimilarHot)); }
/// <summary> /// 判断对象是否存在 /// </summary> /// <param name="dicEnum"></param> /// <returns></returns> public bool IsExist(ProductSimilarHotEntity productSimilarHot) { return(ProductSimilarHotDA.Instance.ExistNum(productSimilarHot) > 0); }