Line data    Source code

       1             : #region Copyright
       2             : // // -----------------------------------------------------------------------
       3             : // // <copyright company="Chinchilla Software Limited">
       4             : // //   Copyright Chinchilla Software Limited. All rights reserved.
       5             : // // </copyright>
       6             : // // -----------------------------------------------------------------------
       7             : #endregion
       8             : 
       9             : using System;
      10             : using MongoDB.Bson;
      11             : using MongoDB.Bson.IO;
      12             : using MongoDB.Bson.Serialization;
      13             : 
      14             : namespace Cqrs.Mongo.Serialisers
      15             : {
      16             :         /// <summary>
      17             :         /// A <see cref="IBsonSerializer"/> that stores <see cref="Type"/> information as well.
      18             :         /// </summary>
      19             :         public class TypeSerialiser : IBsonSerializer
      20           1 :         {
      21             :                 /// <summary>
      22             :                 /// Deserialises a <see cref="Type"/> value, first reading the <see cref="Type"/> information from the provide <paramref name="reader"/>.
      23             :                 /// </summary>
      24           1 :                 public object Deserialize(BsonReader reader, Type nominalType, IBsonSerializationOptions options)
      25             :                 {
      26             :                         var actualType = nominalType;
      27             :                         return Deserialize(reader, nominalType, actualType, options);
      28             :                 }
      29             : 
      30             :                 /// <summary>
      31             :                 /// Deserialises a <see cref="Type"/> value, first reading the <see cref="Type"/> information from the provide <paramref name="reader"/>.
      32             :                 /// </summary>
      33           1 :                 public object Deserialize(BsonReader reader, Type nominalType, Type actualType, IBsonSerializationOptions options)
      34             :                 {
      35             :                         if (reader.CurrentBsonType == BsonType.Null)
      36             :                         {
      37             :                                 return null;
      38             :                         }
      39             :                         string assemblyQualifiedName = reader.ReadString();
      40             :                         return Type.GetType(assemblyQualifiedName);
      41             :                 }
      42             : 
      43             :                 /// <summary>
      44             :                 /// Gets the default serialization options for this serializer.
      45             :                 /// </summary>
      46             :                 /// <returns>
      47             :                 /// The default serialization options for this serializer.
      48             :                 /// </returns>
      49           1 :                 public IBsonSerializationOptions GetDefaultSerializationOptions()
      50             :                 {
      51             :                         return null;
      52             :                 }
      53             : 
      54             :                 /// <summary>
      55             :                 /// Serialises a <see cref="Type"/> value.
      56             :                 /// </summary>
      57           1 :                 public void Serialize(BsonWriter writer, Type nominalType, object value, IBsonSerializationOptions options)
      58             :                 {
      59             :                         if (value == null)
      60             :                         {
      61             :                                 writer.WriteNull();
      62             :                         }
      63             :                         else
      64             :                         {
      65             :                                 writer.WriteString(((Type)value).AssemblyQualifiedName);
      66             :                         }
      67             :                 }
      68             :         }
      69             : }