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SealedClassSerializerBase.cs
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SealedClassSerializerBase.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.
*/
namespace MongoDB.Bson.Serialization.Serializers
{
/// <summary>
/// Represents an abstract base class for sealed class serializers.
/// </summary>
/// <typeparam name="TValue">The type of the value.</typeparam>
public abstract class SealedClassSerializerBase<TValue> : SerializerBase<TValue> where TValue : class
{
// public methods
/// <summary>
/// Deserializes a value.
/// </summary>
/// <param name="context">The deserialization context.</param>
/// <param name="args">The deserialization args.</param>
/// <returns>A deserialized value.</returns>
public override TValue Deserialize(BsonDeserializationContext context, BsonDeserializationArgs args)
{
var bsonReader = context.Reader;
if (bsonReader.GetCurrentBsonType() == BsonType.Null)
{
bsonReader.ReadNull();
return null;
}
else
{
return DeserializeValue(context, args);
}
}
/// <summary>
/// Serializes a value.
/// </summary>
/// <param name="context">The serialization context.</param>
/// <param name="args">The serialization args.</param>
/// <param name="value">The value.</param>
public override void Serialize(BsonSerializationContext context, BsonSerializationArgs args, TValue value)
{
if (value == null)
{
var bsonWriter = context.Writer;
bsonWriter.WriteNull();
}
else
{
SerializeValue(context, args, value);
}
}
// protected methods
/// <summary>
/// Deserializes a class.
/// </summary>
/// <param name="context">The deserialization context.</param>
/// <param name="args">The deserialization args.</param>
/// <returns>A deserialized value.</returns>
protected virtual TValue DeserializeValue(BsonDeserializationContext context, BsonDeserializationArgs args)
{
throw CreateCannotBeDeserializedException();
}
/// <summary>
/// Serializes a value of type {TValue}.
/// </summary>
/// <param name="context">The serialization context.</param>
/// <param name="args">The serialization args.</param>
/// <param name="value">The value.</param>
protected virtual void SerializeValue(BsonSerializationContext context, BsonSerializationArgs args, TValue value)
{
throw CreateCannotBeSerializedException();
}
}
}