Newtonsoft.Json.Tests\TestObjects\ListOfIds.cs

#region License

// Copyright (c) 2007 James Newton-King

//

// Permission is hereby granted, free of charge, to any person

// obtaining a copy of this software and associated documentation

// files (the "Software"), to deal in the Software without

// restriction, including without limitation the rights to use,

// copy, modify, merge, publish, distribute, sublicense, and/or sell

// copies of the Software, and to permit persons to whom the

// Software is furnished to do so, subject to the following

// conditions:

//

// The above copyright notice and this permission notice shall be

// included in all copies or substantial portions of the Software.

//

// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,

// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES

// OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND

// NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT

// HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,

// WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING

// FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR

// OTHER DEALINGS IN THE SOFTWARE.

#endregion

using System;

using System.Collections.Generic;

namespace Newtonsoft.Json.Tests.TestObjects

{

  public class ListOfIds<T> : JsonConverter where T : Bar, new()

  {

    public override void WriteJson(JsonWriter writer, object value, JsonSerializer serializer)

    {

      IList<T> list = (IList<T>)value;

      writer.WriteStartArray();

      foreach (T item in list)

      {

        writer.WriteValue(item.Id);

      }

      writer.WriteEndArray();

    }

    public override object ReadJson(JsonReader reader, Type objectType, object existingValue, JsonSerializer serializer)

    {

      IList<T> list = new List<T>();

      reader.Read();

      while (reader.TokenType != JsonToken.EndArray)

      {

        long id = (long)reader.Value;

        list.Add(new T

                   {

                     Id = Convert.ToInt32(id)

                   });

        reader.Read();

      }

      return list;

    }

    public override bool CanConvert(Type objectType)

    {

      return typeof(IList<T>).IsAssignableFrom(objectType);

    }

  }

}