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BsonIBsonSerializableSerializer.cs
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BsonIBsonSerializableSerializer.cs
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/* Copyright 2010-2012 10gen Inc.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
using System;
using System.Collections;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.IO;
using MongoDB.Bson.IO;
using MongoDB.Bson.Serialization;
namespace MongoDB.Bson.Serialization.Serializers
{
/// <summary>
/// Represents a serializer for classes that implement IBsonSerializable.
/// </summary>
public class BsonIBsonSerializableSerializer : IBsonSerializer
{
// private static fields
private static BsonIBsonSerializableSerializer __instance = new BsonIBsonSerializableSerializer();
// constructors
/// <summary>
/// Initializes a new instance of the BsonIBsonSerializableSerializer class.
/// </summary>
public BsonIBsonSerializableSerializer()
{
}
// public static properties
/// <summary>
/// Gets an instance of the BsonIBsonSerializableSerializer class.
/// </summary>
public static BsonIBsonSerializableSerializer Instance
{
get { return __instance; }
}
// public methods
/// <summary>
/// Deserializes an object from a BsonReader.
/// </summary>
/// <param name="bsonReader">The BsonReader.</param>
/// <param name="nominalType">The nominal type of the object.</param>
/// <param name="options">The serialization options.</param>
/// <returns>An object.</returns>
public object Deserialize(BsonReader bsonReader, Type nominalType, IBsonSerializationOptions options)
{
var value = (IBsonSerializable)Activator.CreateInstance(nominalType, true); // private default constructor OK
return value.Deserialize(bsonReader, nominalType, options);
}
/// <summary>
/// Deserializes an object from a BsonReader.
/// </summary>
/// <param name="bsonReader">The BsonReader.</param>
/// <param name="nominalType">The nominal type of the object.</param>
/// <param name="actualType">The actual type of the object.</param>
/// <param name="options">The serialization options.</param>
/// <returns>An object.</returns>
public object Deserialize(BsonReader bsonReader, Type nominalType, Type actualType, IBsonSerializationOptions options)
{
var value = (IBsonSerializable)Activator.CreateInstance(actualType, true); // private default constructor OK
return value.Deserialize(bsonReader, nominalType, options);
}
/// <summary>
/// Gets the document Id.
/// </summary>
/// <param name="document">The document.</param>
/// <param name="id">The Id.</param>
/// <param name="idNominalType">The nominal type of the Id.</param>
/// <param name="idGenerator">The IdGenerator for the Id type.</param>
/// <returns>True if the document has an Id.</returns>
public bool GetDocumentId(object document, out object id, out Type idNominalType, out IIdGenerator idGenerator)
{
var bsonSerializable = (IBsonSerializable)document;
return bsonSerializable.GetDocumentId(out id, out idNominalType, out idGenerator);
}
/// <summary>
/// Serializes an object to a BsonWriter.
/// </summary>
/// <param name="bsonWriter">The BsonWriter.</param>
/// <param name="nominalType">The nominal type.</param>
/// <param name="value">The object.</param>
/// <param name="options">The serialization options.</param>
public void Serialize(BsonWriter bsonWriter, Type nominalType, object value, IBsonSerializationOptions options)
{
if (value == null)
{
bsonWriter.WriteNull();
}
else
{
var serializable = (IBsonSerializable)value;
serializable.Serialize(bsonWriter, nominalType, options);
}
}
/// <summary>
/// Sets the document Id.
/// </summary>
/// <param name="document">The document.</param>
/// <param name="id">The Id.</param>
public void SetDocumentId(object document, object id)
{
var bsonSerializable = (IBsonSerializable)document;
bsonSerializable.SetDocumentId(id);
}
}
}