Migrate from Newtonsoft.json to ServiceStack.Text regarding JsonTextWriter

ServiceStack.Text JSON
1

We have a project which both uses ServiceStack.Text and Newtonsoft.json. Now I want to migrate everything to yours. One class I have no clue, it has extension methods on Newtonsoft’s method JsonTextWriter, example:

    public static void Write(this JsonTextWriter jsonWriter, Overlay overlay)
    {
        ArgumentValidator.IsNotNull(jsonWriter, nameof(jsonWriter));

        if (overlay != null)
        {
            jsonWriter.WriteStartObject();

            jsonWriter.WritePropertyName("uniqueid");
            jsonWriter.WriteValue(overlay.Id.Value);
            
            jsonWriter.WritePropertyName("metaType");
            jsonWriter.WriteValue(overlay.Type.ToString().ToLower());

            jsonWriter.WritePropertyName("title");
            jsonWriter.WriteValue(overlay.Title);

            if (overlay is MarkerOverlay)
            {
                jsonWriter.Write(overlay as MarkerOverlay);
            }
            else if (overlay is PolylineOverlay)
            {
                jsonWriter.Write(overlay as PolylineOverlay);
            }
            else if (overlay is PolygonOverlay)
            {
                jsonWriter.Write(overlay as PolygonOverlay);
            }
            
            jsonWriter.WriteEndObject();
        }
        else
        {
            jsonWriter.WriteNull();
        }
    }

And of course the derived classes have again their specific writers.

What would be a ServiceStack implementation?

2

I’ve no idea what that’s for, but we don’t have anything like it. See the docs if custom serialisation of a struct.

The way you can customize how types are serialised is to use JsConfig APIs, e.g:

JsConfig<System.Drawing.Color>.SerializeFn = c => c.ToString().Replace("Color ","").Replace("[","").Replace("]","");
JsConfig<System.Drawing.Color>.DeSerializeFn = System.Drawing.Color.FromName;

JsConfig<Guid>.SerializeFn = guid => guid.ToString("D");
JsConfig<TimeSpan>.SerializeFn = time => 
    (time.Ticks < 0 ? "-" : "") + time.ToString("hh':'mm':'ss'.'fffffff");
3

Okay thank you very much, I’ll have a look and see if this is appropriate. The reason it is used this way for some classes extra information is written, like:

      if (address is DutchAddress)
            {
                var dutchAddress = address as DutchAddress;

                jsonWriter.WritePropertyName("postcode");
                jsonWriter.WriteValue(dutchAddress.Postcode);

               ....

               }