Serialize Tweetinvi using JsonConvert.SerializeObject

1
votes

I am trying to get the following code to work, but a not implemented exception get thrown when I try to Serialize the object. It states "The method or operation is not implemented." I have tried implementing ITweet as a concrete class, but I can not go from the interface to concrete class. 

private void SendToKinesis(ITweet tweet)
    {


        var dataAsJson = JsonConvert.SerializeObject(tweet);
        byte[] dataAsBytes = Encoding.UTF8.GetBytes(dataAsJson);

       //Send to Kinesis

    }

Complete Exception:

System.NotImplementedException: The method or operation is not implemented. at Tweetinvi.Logic.JsonConverters.JsonPropertyConverterRepository.WriteJson(JsonWriter writer, Object value, JsonSerializer serializer) at Newtonsoft.Json.Serialization.JsonSerializerInternalWriter.SerializeConvertable(JsonWriter writer, JsonConverter converter, Object value, JsonContract contract, JsonContainerContract collectionContract, JsonProperty containerProperty) at Newtonsoft.Json.Serialization.JsonSerializerInternalWriter.SerializeValue(JsonWriter writer, Object value, JsonContract valueContract, JsonProperty member, JsonContainerContract containerContract, JsonProperty containerProperty) at Newtonsoft.Json.Serialization.JsonSerializerInternalWriter.SerializeObject(JsonWriter writer, Object value, JsonObjectContract contract, JsonProperty member, JsonContainerContract collectionContract, JsonProperty containerProperty) at Newtonsoft.Json.Serialization.JsonSerializerInternalWriter.SerializeValue(JsonWriter writer, Object value, JsonContract valueContract, JsonProperty member, JsonContainerContract containerContract, JsonProperty containerProperty) at Newtonsoft.Json.Serialization.JsonSerializerInternalWriter.SerializeObject(JsonWriter writer, Object value, JsonObjectContract contract, JsonProperty member, JsonContainerContract collectionContract, JsonProperty containerProperty) at Newtonsoft.Json.Serialization.JsonSerializerInternalWriter.SerializeValue(JsonWriter writer, Object value, JsonContract valueContract, JsonProperty member, JsonContainerContract containerContract, JsonProperty containerProperty) at Newtonsoft.Json.Serialization.JsonSerializerInternalWriter.Serialize(JsonWriter jsonWriter, Object value, Type objectType) at Newtonsoft.Json.JsonSerializer.SerializeInternal(JsonWriter jsonWriter, Object value, Type objectType) at Newtonsoft.Json.JsonSerializer.Serialize(JsonWriter jsonWriter, Object value, Type objectType) at Newtonsoft.Json.JsonConvert.SerializeObjectInternalA first chance exception of type 'System.NotImplementedException' occurred in TwitterIngestion.exe (Object value, Type type, JsonSerializer jsonSerializer) at Newtonsoft.Json.JsonConvert.SerializeObject(Object value, Type type, JsonSerializerSettings settings) at Newtonsoft.Json.JsonConvert.SerializeObject(Object value) at TwitterIngestion.IngestionService.SendToKinesis(ITweet tweet) in c:\Users\sepehr500\Desktop\Work Stuff\TwitterIngestion\TwitterIngestion\IngestionTask.cs:line 104

1
c#.netjson.nettweetinvi
For us to be of any help, we would need to know more. Can you include the complete ToString() output of the exception, including the traceback from JsonConvert.SerializeObject()? - dbc
What "method or operation is not implemented"? If you surround the call to JsonConvert with a try { } catch (Exception ex) { Debug.WriteLine(ex); throw; } you can see the complete exception. - dbc
It may be that TweetInvi does not support serialization. Many of its classes, e.g. TweetDTO use the attribute [JsonConverter(typeof(JsonPropertyConverterRepository))], and this class does not implement writing (always throws an exception). - dbc
Can you download the source, modify JsonPropertyConverterRepository and add public override bool CanWrite { get { return false; } }, then build and use the local version? I'm not familiar with this library so I don't know if this is possible. - dbc

1 Answers

-1
votes

Try following code:

private void SendToKinesis(ITweet tweet)
{


    var dataAsJson = JsonConvert.SerializeObject<ITweet>(tweet);
    byte[] dataAsBytes = Encoding.UTF8.GetBytes(dataAsJson);

   //Send to Kinesis

}