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Guid Json Converter for Orleans / Json.NET
using System;
using Newtonsoft.Json;
namespace ServiceCommon.Utilities.Serialization
{
/// <summary>
/// JSON converter for <see cref="Guid"/>.
/// </summary>
public class GuidJsonConverter : JsonConverter
{
/// <summary>
/// Gets the instance.
/// </summary>
public static GuidJsonConverter Instance { get; } = new GuidJsonConverter();
/// <summary>
/// Gets a value indicating whether this <see cref="T:Newtonsoft.Json.JsonConverter"/> can read JSON.
/// </summary>
/// <value><see langword="true"/> if this <see cref="T:Newtonsoft.Json.JsonConverter"/> can read JSON; otherwise, <see langword="false"/>.
/// </value>
public override bool CanRead => true;
/// <summary>
/// Gets a value indicating whether this <see cref="T:Newtonsoft.Json.JsonConverter"/> can write JSON.
/// </summary>
/// <value><see langword="true"/> if this <see cref="T:Newtonsoft.Json.JsonConverter"/> can write JSON; otherwise, <see langword="false"/>.
/// </value>
public override bool CanWrite => true;
/// <summary>
/// Determines whether this instance can convert the specified object type.
/// </summary>
/// <param name="objectType">
/// Kind of the object.
/// </param>
/// <returns>
/// <see langword="true"/> if this instance can convert the specified object type; otherwise,
/// .
/// </returns>
public override bool CanConvert(Type objectType)
{
return objectType.IsAssignableFrom(typeof(Guid)) || objectType.IsAssignableFrom(typeof(Guid?));
}
/// <summary>
/// Writes the JSON representation of the object.
/// </summary>
/// <param name="writer">
/// The <see cref="T:Newtonsoft.Json.JsonWriter"/> to write to.
/// </param>
/// <param name="value">
/// The value.
/// </param>
/// <param name="serializer">
/// The calling serializer.
/// </param>
public override void WriteJson(JsonWriter writer, object value, JsonSerializer serializer)
{
if (value == null)
{
writer.WriteValue(default(string));
}
else if (value is Guid)
{
var guid = (Guid)value;
writer.WriteValue(guid.ToString("N"));
}
}
/// <summary>
/// Reads the JSON representation of the object.
/// </summary>
/// <param name="reader">
/// The <see cref="T:Newtonsoft.Json.JsonReader"/> to read from.
/// </param>
/// <param name="objectType">
/// Kind of the object.
/// </param>
/// <param name="existingValue">
/// The existing value of object being read.
/// </param>
/// <param name="serializer">
/// The calling serializer.
/// </param>
/// <returns>
/// The object value.
/// </returns>
public override object ReadJson(
JsonReader reader,
Type objectType,
object existingValue,
JsonSerializer serializer)
{
var str = reader.Value as string;
return str != null ? Guid.Parse(str) : default(Guid);
}
}
}
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