using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using Newtonsoft.Json.Bson;
using System.Globalization;
using Newtonsoft.Json.Utilities;
namespace Newtonsoft.Json.Converters{
/// <summary>
/// Converts a <see cref="BsonObjectId"/> to and from JSON and BSON.
/// </summary>
public class BsonObjectIdConverter : JsonConverter
{
/// <summary>
/// Writes the JSON representation of the object.
/// </summary>
/// <param name="writer">The <see cref="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)
{
BsonObjectId objectId = (BsonObjectId) value;
BsonWriter bsonWriter = writer as BsonWriter;
if (bsonWriter != null)
{
bsonWriter.WriteObjectId(objectId.Value);
}
else
{
writer.WriteValue(objectId.Value);
}
}
/// <summary>
/// Reads the JSON representation of the object.
/// </summary>
/// <param name="reader">The <see cref="JsonReader"/> to read from.</param>
/// <param name="objectType">Type 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)
{
if (reader.TokenType != JsonToken.Bytes)
throw new JsonSerializationException("Expected Bytes but got {0}.".FormatWith(CultureInfo.InvariantCulture, reader.TokenType));
byte[] value = (byte[])reader.Value;
return new BsonObjectId(value);
}
/// <summary>
/// Determines whether this instance can convert the specified object type.
/// </summary>
/// <param name="objectType">Type of the object.</param>
/// <returns>
/// <c>true</c> if this instance can convert the specified object type; otherwise, <c>false</c>.
/// </returns>
public override bool CanConvert(Type objectType)
{
return (objectType == typeof (BsonObjectId));
}
}
}
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