//using System;
//using System.Collections.Generic;
//using System.Linq;
//using System.Text;
//using System.Threading.Tasks;
//using Amazon.DynamoDBv2.DocumentModel;
//using Newtonsoft.Json;

//namespace ServerCommon.DB
//{
//    public class NickNameEntityAttr
//    {
//        public string AccountGuid = string.Empty;
//        public string AccountId = string.Empty;
//    }
//    public class NickNameEntity
//    {
//        public string PK_NickName { get; private set; } = string.Empty;
//        public string SK_Empty { get; private set; } = string.Empty;

//        public NickNameEntityAttr Attr { get; private set; } = new();

//        public NickNameEntity()
//        {

//        }
//        public NickNameEntity(Document document)
//        {
//            ReadFrom(document);
//        }

//        void ReadFrom(Document document)
//        {
//            PK_NickName = document["PK"].AsString().Replace(MainDB.GetPKPrefix(EEntityType.NickName), "");
//            SK_Empty = document["SK"].AsString().Replace(MainDB.GetSKPrefix(EEntityType.NickName), "");

//            NickNameEntityAttr? attr = JsonConvert.DeserializeObject<NickNameEntityAttr>(document["Attr"].AsString());
//            if (attr == null)
//                throw new Exception("Attr DeserializeObject error");

//            Attr = attr;
//        }
//    }
//}