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BsonTypeMapperOptions.cs
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BsonTypeMapperOptions.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
{
/// <summary>
/// Represents how duplicate names should be handled.
/// </summary>
public enum DuplicateNameHandling
{
/// <summary>
/// Overwrite original value with new value.
/// </summary>
Overwrite,
/// <summary>
/// Ignore duplicate name and keep original value.
/// </summary>
Ignore,
/// <summary>
/// Throw an exception.
/// </summary>
ThrowException
}
/// <summary>
/// Represents options used by the BsonTypeMapper.
/// </summary>
public class BsonTypeMapperOptions
{
// private static fields
private static BsonTypeMapperOptions __defaults = new BsonTypeMapperOptions();
// private fields
private bool _isFrozen;
private DuplicateNameHandling _duplicateNameHandling; // default value zero means Overwrite
private Type _mapBsonArrayTo = typeof(List<object>);
private Type _mapBsonDocumentTo = typeof(Dictionary<string, object>);
private bool _mapOldBinaryToByteArray;
// constructors
/// <summary>
/// Initializes a new instance of the BsonTypeMapperOptions class.
/// </summary>
public BsonTypeMapperOptions()
{
}
// public static properties
/// <summary>
/// Gets or sets the default BsonTypeMapperOptions.
/// </summary>
public static BsonTypeMapperOptions Defaults
{
get { return __defaults; }
set
{
if (value.IsFrozen)
{
__defaults = value;
}
else
{
__defaults = value.Clone().Freeze();
}
}
}
// public properties
/// <summary>
/// Gets or sets how duplicate names should be handled.
/// </summary>
public DuplicateNameHandling DuplicateNameHandling
{
get { return _duplicateNameHandling; }
set
{
if (_isFrozen) { throw new InvalidOperationException("BsonTypeMapperOptions is frozen."); }
_duplicateNameHandling = value;
}
}
/// <summary>
/// Gets whether the BsonTypeMapperOptions is frozen.
/// </summary>
public bool IsFrozen
{
get { return _isFrozen; }
}
/// <summary>
/// Gets or sets the type that a BsonArray should be mapped to.
/// </summary>
public Type MapBsonArrayTo
{
get { return _mapBsonArrayTo; }
set
{
if (_isFrozen) { throw new InvalidOperationException("BsonTypeMapperOptions is frozen."); }
_mapBsonArrayTo = value;
}
}
/// <summary>
/// Gets or sets the type that a BsonDocument should be mapped to.
/// </summary>
public Type MapBsonDocumentTo
{
get { return _mapBsonDocumentTo; }
set
{
if (_isFrozen) { throw new InvalidOperationException("BsonTypeMapperOptions is frozen."); }
_mapBsonDocumentTo = value;
}
}
/// <summary>
/// Gets or sets whether binary sub type OldBinary should be mapped to byte[] the way sub type Binary is.
/// </summary>
public bool MapOldBinaryToByteArray
{
get { return _mapOldBinaryToByteArray; }
set
{
if (_isFrozen) { throw new InvalidOperationException("BsonTypeMapperOptions is frozen."); }
_mapOldBinaryToByteArray = value;
}
}
// public methods
/// <summary>
/// Clones the BsonTypeMapperOptions.
/// </summary>
/// <returns>The cloned BsonTypeMapperOptions.</returns>
public BsonTypeMapperOptions Clone()
{
return new BsonTypeMapperOptions
{
DuplicateNameHandling = _duplicateNameHandling,
MapBsonArrayTo = _mapBsonArrayTo,
MapBsonDocumentTo = _mapBsonDocumentTo,
MapOldBinaryToByteArray = _mapOldBinaryToByteArray
};
}
/// <summary>
/// Freezes the BsonTypeMapperOptions.
/// </summary>
/// <returns>The frozen BsonTypeMapperOptions.</returns>
public BsonTypeMapperOptions Freeze()
{
if (!_isFrozen)
{
_isFrozen = true;
}
return this;
}
}
}