Line data    Source code

       1             : #region Copyright
       2             : // // -----------------------------------------------------------------------
       3             : // // <copyright company="cdmdotnet Limited">
       4             : // //   Copyright cdmdotnet Limited. All rights reserved.
       5             : // // </copyright>
       6             : // // -----------------------------------------------------------------------
       7             : #endregion
       8             : 
       9             : using System;
      10             : using MongoDB.Bson;
      11             : using MongoDB.Bson.Serialization;
      12             : 
      13             : namespace Cqrs.MongoDB.Serialisers
      14             : {
      15             :         public class TypeSerialiser : IBsonSerializer<Type>
      16           0 :         {
      17             :                 #region Implementation of IBsonSerializer
      18             : 
      19             :                 /// <summary>
      20             :                 /// Deserializes a value.
      21             :                 /// </summary>
      22             :                 /// <param name="context">The deserialization context.</param>
      23             :                 /// <param name="args">The deserialization args.</param>
      24             :                 /// <returns>
      25             :                 /// A deserialized value.
      26             :                 /// </returns>
      27           1 :                 public object Deserialize(BsonDeserializationContext context, BsonDeserializationArgs args)
      28             :                 {
      29             :                         return ((IBsonSerializer<Type>) this).Deserialize(context, args);
      30             :                 }
      31             : 
      32             :                 /// <summary>
      33             :                 /// Serializes a value.
      34             :                 /// </summary>
      35             :                 /// <param name="context">The serialization context.</param><param name="args">The serialization args.</param><param name="value">The value.</param>
      36           1 :                 public void Serialize(BsonSerializationContext context, BsonSerializationArgs args, Type value)
      37             :                 {
      38             :                         if (value == null)
      39             :                         {
      40             :                                 context.Writer.WriteNull();
      41             :                         }
      42             :                         else
      43             :                         {
      44             :                                 context.Writer.WriteString((value).AssemblyQualifiedName);
      45             :                         }
      46             :                 }
      47             : 
      48             :                 /// <summary>
      49             :                 /// Deserializes a value.
      50             :                 /// </summary>
      51             :                 /// <param name="context">The deserialization context.</param>
      52             :                 /// <param name="args">The deserialization args.</param>
      53             :                 /// <returns>
      54             :                 /// A deserialized value.
      55             :                 /// </returns>
      56             :                 Type IBsonSerializer<Type>.Deserialize(BsonDeserializationContext context, BsonDeserializationArgs args)
      57             :                 {
      58             :                         var bsonReader = context.Reader;
      59             :                         BsonType currentBsonType = bsonReader.CurrentBsonType;
      60             :                         if (currentBsonType == BsonType.Null)
      61             :                                 return null;
      62             : 
      63             :                         string assemblyQualifiedName;
      64             :                         switch (currentBsonType)
      65             :                         {
      66             :                                 case BsonType.Document:
      67             :                                         bsonReader.ReadStartDocument();
      68             :                                         assemblyQualifiedName = context.Reader.ReadString();
      69             :                                         // This moves the pointer forward.
      70             :                                         bsonReader.ReadBsonType();
      71             :                                         bsonReader.ReadEndDocument();
      72             :                                         break;
      73             :                                 default:
      74             :                                         assemblyQualifiedName = bsonReader.ReadString();
      75             :                                         break;
      76             :                         }
      77             :                         return Type.GetType(assemblyQualifiedName);
      78             :                 }
      79             : 
      80             :                 /// <summary>
      81             :                 /// Serializes a value.
      82             :                 /// </summary>
      83             :                 /// <param name="context">The serialization context.</param><param name="args">The serialization args.</param><param name="value">The value.</param>
      84           1 :                 public void Serialize(BsonSerializationContext context, BsonSerializationArgs args, object value)
      85             :                 {
      86             :                         Serialize(context, args, (Type)value);
      87             :                 }
      88             : 
      89             :                 /// <summary>
      90             :                 /// Gets the type of the value.
      91             :                 /// </summary>
      92             :                 public Type ValueType { get; protected set; }
      93             : 
      94             :                 #endregion
      95             :         }
      96             : }