BootstrapAdmin/Bootstrap.DataAccess.SQLite/Message.cs

using Longbow;
using Longbow.Cache;
using System;
using System.Collections.Generic;
using System.Data;
using System.Data.Common;
using System.Linq;

namespace Bootstrap.DataAccess.SQLite
{
    /// <summary>
    /// 
    /// </summary>
    public class Message : DataAccess.Message
    {
        /// <summary>
        /// 所有有关userName所有消息列表
        /// </summary>
        /// <param name="userName"></param>
        /// <returns></returns>
        protected override IEnumerable<DataAccess.Message> RetrieveMessages(string userName)
        {
            var messageRet = CacheManager.GetOrAdd(RetrieveMessageDataKey, key =>
            {
                string sql = "select m.*, d.Name, ifnull(i.Code + u.Icon, '~/images/uploader/default.jpg'), u.DisplayName from [Messages] m left join Dicts d on m.Label = d.Code and d.Category = '消息标签' and d.Define = 0 left join Dicts i on i.Category = '头像地址' and i.Name = '头像路径' and i.Define = 0 inner join Users u on m.[From] = u.UserName where [To] = @UserName or [From] = @UserName order by m.SendTime desc";
                List<Message> messages = new List<Message>();
                DbCommand cmd = DbAccessManager.DBAccess.CreateCommand(CommandType.Text, sql);
                cmd.Parameters.Add(DbAccessManager.DBAccess.CreateParameter("@UserName", userName));
                using (DbDataReader reader = DbAccessManager.DBAccess.ExecuteReader(cmd))
                {
                    while (reader.Read())
                    {
                        messages.Add(new Message()
                        {
                            Id = LgbConvert.ReadValue(reader[0], 0),
                            Title = (string)reader[1],
                            Content = (string)reader[2],
                            From = (string)reader[3],
                            To = (string)reader[4],
                            SendTime = LgbConvert.ReadValue(reader[5], DateTime.MinValue),
                            Status = (string)reader[6],
                            Mark = LgbConvert.ReadValue(reader[7], 0),
                            IsDelete = LgbConvert.ReadValue(reader[8], 0),
                            Label = (string)reader[9],
                            LabelName = LgbConvert.ReadValue(reader[10], string.Empty),
                            FromIcon = (string)reader[11],
                            FromDisplayName = (string)reader[12]
                        });
                    }
                }
                return messages;

            });
            return messageRet.OrderByDescending(n => n.SendTime);
        }
    }
}