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ThreeDimensionalArraySerializer.cs
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ThreeDimensionalArraySerializer.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;
namespace MongoDB.Bson.Serialization.Serializers
{
/// <summary>
/// Represents a serializer for three-dimensional arrays.
/// </summary>
/// <typeparam name="TItem">The type of the elements.</typeparam>
public class ThreeDimensionalArraySerializer<TItem> :
SealedClassSerializerBase<TItem[,,]>,
IChildSerializerConfigurable
{
// private fields
private readonly Lazy<IBsonSerializer<TItem>> _lazyItemSerializer;
// constructors
/// <summary>
/// Initializes a new instance of the <see cref="ThreeDimensionalArraySerializer{TItem}"/> class.
/// </summary>
public ThreeDimensionalArraySerializer()
: this(BsonSerializer.SerializerRegistry)
{
}
/// <summary>
/// Initializes a new instance of the <see cref="ThreeDimensionalArraySerializer{TItem}"/> class.
/// </summary>
/// <param name="itemSerializer">The item serializer.</param>
public ThreeDimensionalArraySerializer(IBsonSerializer<TItem> itemSerializer)
{
if (itemSerializer == null)
{
throw new ArgumentNullException("itemSerializer");
}
_lazyItemSerializer = new Lazy<IBsonSerializer<TItem>>(() => itemSerializer);
}
/// <summary>
/// Initializes a new instance of the <see cref="ThreeDimensionalArraySerializer{TItem}" /> class.
/// </summary>
/// <param name="serializerRegistry">The serializer registry.</param>
public ThreeDimensionalArraySerializer(IBsonSerializerRegistry serializerRegistry)
{
if (serializerRegistry == null)
{
throw new ArgumentNullException("serializerRegistry");
}
_lazyItemSerializer = new Lazy<IBsonSerializer<TItem>>(() => serializerRegistry.GetSerializer<TItem>());
}
// public properties
/// <summary>
/// Gets the item serializer.
/// </summary>
/// <value>
/// The item serializer.
/// </value>
public IBsonSerializer<TItem> ItemSerializer
{
get { return _lazyItemSerializer.Value; }
}
// 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>
protected override TItem[,,] DeserializeValue(BsonDeserializationContext context, BsonDeserializationArgs args)
{
var bsonReader = context.Reader;
EnsureBsonTypeEquals(bsonReader, BsonType.Array);
bsonReader.ReadStartArray();
var outerList = new List<List<List<TItem>>>();
while (bsonReader.ReadBsonType() != BsonType.EndOfDocument)
{
bsonReader.ReadStartArray();
var middleList = new List<List<TItem>>();
while (bsonReader.ReadBsonType() != BsonType.EndOfDocument)
{
bsonReader.ReadStartArray();
var innerList = new List<TItem>();
while (bsonReader.ReadBsonType() != BsonType.EndOfDocument)
{
var item = _lazyItemSerializer.Value.Deserialize(context);
innerList.Add(item);
}
bsonReader.ReadEndArray();
middleList.Add(innerList);
}
bsonReader.ReadEndArray();
outerList.Add(middleList);
}
bsonReader.ReadEndArray();
var length1 = outerList.Count;
var length2 = (length1 == 0) ? 0 : outerList[0].Count;
var length3 = (length2 == 0) ? 0 : outerList[0][0].Count;
var array = new TItem[length1, length2, length3];
for (int i = 0; i < length1; i++)
{
var middleList = outerList[i];
if (middleList.Count != length2)
{
var message = string.Format("Middle list {0} is of length {1} but should be of length {2}.", i, middleList.Count, length2);
throw new FormatException(message);
}
for (int j = 0; j < length2; j++)
{
var innerList = middleList[j];
if (innerList.Count != length3)
{
var message = string.Format("Inner list {0} is of length {1} but should be of length {2}.", j, innerList.Count, length3);
throw new FormatException(message);
}
for (int k = 0; k < length3; k++)
{
array[i, j, k] = innerList[k];
}
}
}
return array;
}
/// <summary>
/// Serializes a value.
/// </summary>
/// <param name="context">The serialization context.</param>
/// <param name="args">The serialization args.</param>
/// <param name="value">The object.</param>
protected override void SerializeValue(BsonSerializationContext context, BsonSerializationArgs args, TItem[,,] value)
{
var bsonWriter = context.Writer;
var length1 = value.GetLength(0);
var length2 = value.GetLength(1);
var length3 = value.GetLength(2);
bsonWriter.WriteStartArray();
for (int i = 0; i < length1; i++)
{
bsonWriter.WriteStartArray();
for (int j = 0; j < length2; j++)
{
bsonWriter.WriteStartArray();
for (int k = 0; k < length3; k++)
{
_lazyItemSerializer.Value.Serialize(context, value[i, j, k]);
}
bsonWriter.WriteEndArray();
}
bsonWriter.WriteEndArray();
}
bsonWriter.WriteEndArray();
}
/// <summary>
/// Returns a serializer that has been reconfigured with the specified item serializer.
/// </summary>
/// <param name="itemSerializer">The item serializer.</param>
/// <returns>The reconfigured serializer.</returns>
public ThreeDimensionalArraySerializer<TItem> WithItemSerializer(IBsonSerializer<TItem> itemSerializer)
{
return new ThreeDimensionalArraySerializer<TItem>(itemSerializer);
}
// explicit interface implementations
IBsonSerializer IChildSerializerConfigurable.ChildSerializer
{
get { return ItemSerializer; }
}
IBsonSerializer IChildSerializerConfigurable.WithChildSerializer(IBsonSerializer childSerializer)
{
return WithItemSerializer((IBsonSerializer<TItem>)childSerializer);
}
}
}