www.pudn.com > MyShop.rar > Channel.cs

using System; 
using System.Collections.Generic; 
using System.Data; 
 
 
using MyShop.DALFactory; 
using MyShop.IDAL; 
using MyShop.Model; 
 
 
namespace MyShop.BLL 
{ 
    public class Channel 
    { 
        private IChannel dal = DataAccess.CreateChannel(); 
 
        #region  IChannel 
 
        public int Add(ChannelInfo model) 
        { 
            if (model == null) 
            { 
                return 0; 
            } 
            return dal.Add(model); 
        } 
 
        public int Delete(string filter) 
        { 
            if (string.IsNullOrEmpty(filter)) 
                return 0; 
            return dal.Delete(filter); 
        } 
 
        public bool Exist(string filter) 
        { 
            filter = filter.Trim(); 
            if (string.IsNullOrEmpty(filter)) 
                return false; 
            return dal.Exist(filter); 
        } 
        public DataSet GetDataSet() 
        { 
            return dal.GetDataSet(); 
        } 
 
        public DataSet GetDataSet(string filter) 
        { 
            filter = filter.Trim(); 
            if (string.IsNullOrEmpty(filter)) 
                return null; 
            return dal.GetDataSet(filter); 
        } 
 
        public ChannelInfo GetModel(DataRow dr) 
        { 
            if (dr == null) 
                return null; 
            return dal.GetModel(dr); 
        } 
 
        private DataSet Query(string sql) 
        { 
            sql = sql.Trim(); 
            if (string.IsNullOrEmpty(sql)) 
                return null; 
            return dal.Query(sql); 
        } 
 
        public int Update(ChannelInfo model, string filter) 
        { 
            if (model == null) 
                return 0; 
            filter = filter.Trim(); 
            if (string.IsNullOrEmpty(filter)) 
                return 0; 
            return dal.Update(model, filter); 
        } 
 
        #endregion 
 
        #region common 
 
        public int Add(ChannelInfo model, out string msg) 
        { 
            msg = ""; 
            if (model == null) 
            { 
                msg = msg + "
数据不能为空
"; 
                return 0; 
            } 
            bool isErr = false; 
 
            if (isErr) 
                return 0; 
 
            int count = 0; 
            count = Add(model); 
            if (count == 0) 
                msg = "
系统发生错误,请重新添加!
"; 
            if (count == 1) 
                msg = "
添加成功!
"; 
            return count; 
        } 
 
        public int Delete(int channelId) 
        { 
            if (string.IsNullOrEmpty(channelId.ToString())) 
                return 0; 
            string filer; 
            filer = " channelId =" + channelId; 
            return Delete(filer); 
        } 
        public int Update(ChannelInfo model) 
        { 
 
            if (model == null) 
            { 
                return 0; 
            } 
            string filter; 
            filter = " channelId=" + model.ChannelID; 
            return Update(model, filter); 
        } 
 
        public ChannelInfo GetModel(int channelId) 
        { 
            DataSet dataset = new DataSet(); 
            dataset = GetDataSet(" channelId=" + channelId); 
            if (dataset != null && dataset.Tables[0].Rows.Count > 0) 
                return GetModel(dataset.Tables[0].Rows[0]); 
            return null; 
        } 
 
 
        /// 
 
        /// 系统商品频道 
        /// 
 
        ///  
        public ChannelInfo GetShopModel() 
        { 
            DataSet dataset = new DataSet(); 
            dataset = GetDataSet(" [channelID] = 2 "); 
            if (dataset != null && dataset.Tables[0].Rows.Count > 0) 
                return GetModel(dataset.Tables[0].Rows[0]); 
            return null; 
        } 
 
        /// 
 
        /// 系统文章频道 
        /// 
 
        ///  
        public ChannelInfo GetArticlepModel() 
        { 
            DataSet dataset = new DataSet();  
            dataset = GetDataSet(" [channelID] = 1 "); 
            if (dataset != null && dataset.Tables[0].Rows.Count > 0) 
                return GetModel(dataset.Tables[0].Rows[0]); 
            return null; 
        } 
 
 
        /// 
 
        /// 返回可用的频道 
        /// 
 
        ///  
        public DataSet GetDataSetChannelNav() 
        { 
            string filter = " [disabled] = 0   Order by    OrderId "; 
            return GetDataSet(filter); 
        } 
 
 
        #endregion 
 
        #region 后台管理 
 
        public DataSet GetDataSetOrderByOrderId() 
        { 
            return GetDataSet(" [channelId] > 0 Order by    OrderId  "); 
        } 
        /// 
 
        /// 启用或禁用 
        /// 
 
        ///  
        ///  
        public int Enable(int channelId,bool action) 
        { 
            ChannelInfo model = new ChannelInfo(); 
            model = GetModel(channelId); 
            if (model == null) 
                return 0; 
 
            model.Disabled = action? 0 :1; 
            return Update(model); 
        } 
 
 
        /// 
 
        /// 频道是否存在 
        /// 
 
        ///  
        ///  
        public bool IsExist(string channelName) 
        { 
            channelName = channelName.Trim(); 
            if (Utils.ChkBadChar(channelName)) 
                return false; 
            if (Exist(" [channelName] = '" + Utils.ReplaceBadSQL(channelName.Trim()) + "' ")) 
            { 
                return true; 
            } 
            else 
                return false; 
        } 
 
 
        #endregion 
    } 
}