예제 #1
0
        /// <summary>
        /// See base
        /// </summary>
        public override object ReadJson(JsonReader reader, Type objectType, object existingValue, JsonSerializer serializer)
        {
            if (reader.TokenType == JsonToken.Null)
            {
                return(null);
            }

            if (reader.TokenType == JsonToken.String)
            {
                var val = reader.Value;

                if (val != null && !string.IsNullOrEmpty(val.ToString()))
                {
                    return(DwarfHelper.Load(objectType, Guid.Parse(val.ToString())));
                }

                return(null);
            }

            var jObject = JObject.Load(reader);

            object obj = null;

            if (jObject.Property("id") != null)
            {
                var id = jObject.Property("id").Value.ToObject <Guid?>();

                if (id.HasValue)
                {
                    obj = DwarfHelper.Load(objectType, id.Value);
                }

                if (obj == null)
                {
                    if (HttpContext.Current.Items.Contains(id.Value.ToString()))
                    {
                        obj = HttpContext.Current.Items[id.Value.ToString()];
                    }
                    else
                    {
                        obj = DwarfHelper.CreateInstance(objectType);
                        ((IDwarf)obj).Id = id;
                        HttpContext.Current.Items[id.Value.ToString()] = obj;
                    }
                }
            }
            else
            {
                obj = DwarfHelper.CreateInstance(objectType);
            }

            if (obj == null)
            {
                throw new JsonSerializationException("No object created.");
            }

            var writer = new StringWriter();

            serializer.Serialize(writer, jObject);

            using (var newReader = new JsonTextReader(new StringReader(writer.ToString())))
            {
                newReader.Culture              = reader.Culture;
                newReader.DateParseHandling    = reader.DateParseHandling;
                newReader.DateTimeZoneHandling = reader.DateTimeZoneHandling;
                newReader.FloatParseHandling   = reader.FloatParseHandling;
                serializer.Populate(newReader, obj);
            }

            return(obj);
        }