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BsonDocumentBackedClassSerializer.cs
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BsonDocumentBackedClassSerializer.cs
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/* Copyright 2010-present MongoDB 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.Generic;
using MongoDB.Bson.Serialization.Serializers;
namespace MongoDB.Bson.Serialization
{
/// <summary>
/// Represents a serializer for TClass (a subclass of BsonDocumentBackedClass).
/// </summary>
/// <typeparam name="TClass">The subclass of BsonDocumentBackedClass.</typeparam>
public abstract class BsonDocumentBackedClassSerializer<TClass> : ClassSerializerBase<TClass>, IBsonDocumentSerializer
where TClass : BsonDocumentBackedClass
{
// private fields
private readonly Dictionary<string, BsonSerializationInfo> _memberSerializationInfo;
// constructors
/// <summary>
/// Initializes a new instance of the <see cref="BsonDocumentBackedClassSerializer{TClass}"/> class.
/// </summary>
protected BsonDocumentBackedClassSerializer()
{
_memberSerializationInfo = new Dictionary<string, BsonSerializationInfo>();
}
// public methods
/// <summary>
/// Tries to get the serialization info for a member.
/// </summary>
/// <param name="memberName">Name of the member.</param>
/// <param name="serializationInfo">The serialization information.</param>
/// <returns>
/// <c>true</c> if the serialization info exists; otherwise <c>false</c>.
/// </returns>
public virtual bool TryGetMemberSerializationInfo(string memberName, out BsonSerializationInfo serializationInfo)
{
return _memberSerializationInfo.TryGetValue(memberName, out serializationInfo);
}
// protected methods
/// <inheritdoc />
protected override TClass DeserializeValue(BsonDeserializationContext context, BsonDeserializationArgs args)
{
var backingDocument = BsonDocumentSerializer.Instance.Deserialize(context);
return CreateInstance(backingDocument);
}
/// <summary>
/// Registers a member.
/// </summary>
/// <param name="memberName">The member name.</param>
/// <param name="elementName">The element name.</param>
/// <param name="serializer">The serializer.</param>
protected void RegisterMember(string memberName, string elementName, IBsonSerializer serializer)
{
if (memberName == null)
{
throw new ArgumentNullException("memberName");
}
if (elementName == null)
{
throw new ArgumentNullException("elementName");
}
if (serializer == null)
{
throw new ArgumentNullException("serializer");
}
var info = new BsonSerializationInfo(elementName, serializer, serializer.ValueType);
_memberSerializationInfo.Add(memberName, info);
}
/// <inheritdoc />
protected override void SerializeValue(BsonSerializationContext context, BsonSerializationArgs args, TClass value)
{
var backingDocument = ((BsonDocumentBackedClass)value).BackingDocument;
BsonDocumentSerializer.Instance.Serialize(context, backingDocument);
}
/// <summary>
/// Creates the instance.
/// </summary>
/// <param name="backingDocument">The backing document.</param>
/// <returns>An instance of TClass.</returns>
protected abstract TClass CreateInstance(BsonDocument backingDocument);
}
}