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BsonWriterSettings.cs
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BsonWriterSettings.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;
namespace MongoDB.Bson.IO
{
/// <summary>
/// Represents settings for a BsonWriter.
/// </summary>
[Serializable]
public abstract class BsonWriterSettings
{
// private fields
#pragma warning disable 618
private GuidRepresentation _guidRepresentation = BsonDefaults.GuidRepresentationMode == GuidRepresentationMode.V2 ? BsonDefaults.GuidRepresentation : GuidRepresentation.Unspecified;
#pragma warning restore 618
private bool _isFrozen;
private int _maxSerializationDepth = BsonDefaults.MaxSerializationDepth;
// constructors
/// <summary>
/// Initializes a new instance of the BsonWriterSettings class.
/// </summary>
protected BsonWriterSettings()
{
}
/// <summary>
/// Initializes a new instance of the BsonWriterSettings class.
/// </summary>
/// <param name="guidRepresentation">The representation for Guids.</param>
[Obsolete("Configure serializers instead.")]
protected BsonWriterSettings(GuidRepresentation guidRepresentation)
{
if (BsonDefaults.GuidRepresentationMode != GuidRepresentationMode.V2)
{
throw new InvalidOperationException("BsonWriterSettings constructor with GuidRepresentation can only be used when GuidRepresentationMode is V2.");
}
_guidRepresentation = guidRepresentation;
}
// public properties
/// <summary>
/// Gets or sets the representation for Guids.
/// </summary>
[Obsolete("Configure serializers instead.")]
public GuidRepresentation GuidRepresentation
{
get
{
if (BsonDefaults.GuidRepresentationMode != GuidRepresentationMode.V2)
{
throw new InvalidOperationException("BsonWriterSettings.GuidRepresentation can only be used when GuidRepresentationMode is V2.");
}
return _guidRepresentation;
}
set
{
if (_isFrozen) { ThrowFrozenException(); }
if (BsonDefaults.GuidRepresentationMode != GuidRepresentationMode.V2)
{
throw new InvalidOperationException("BsonWriterSettings.GuidRepresentation can only be used when GuidRepresentationMode is V2.");
}
_guidRepresentation = value;
}
}
/// <summary>
/// Gets whether the settings are frozen.
/// </summary>
public bool IsFrozen
{
get { return _isFrozen; }
}
/// <summary>
/// Gets or sets the max serialization depth allowed (used to detect circular references).
/// </summary>
public int MaxSerializationDepth
{
get { return _maxSerializationDepth; }
set
{
if (_isFrozen) { ThrowFrozenException(); }
_maxSerializationDepth = value;
}
}
// public methods
/// <summary>
/// Creates a clone of the settings.
/// </summary>
/// <returns>A clone of the settings.</returns>
public BsonWriterSettings Clone()
{
return CloneImplementation();
}
/// <summary>
/// Freezes the settings.
/// </summary>
/// <returns>The frozen settings.</returns>
public BsonWriterSettings Freeze()
{
_isFrozen = true;
return this;
}
/// <summary>
/// Returns a frozen copy of the settings.
/// </summary>
/// <returns>A frozen copy of the settings.</returns>
public BsonWriterSettings FrozenCopy()
{
if (_isFrozen)
{
return this;
}
else
{
return Clone().Freeze();
}
}
// protected methods
/// <summary>
/// Creates a clone of the settings.
/// </summary>
/// <returns>A clone of the settings.</returns>
protected abstract BsonWriterSettings CloneImplementation();
/// <summary>
/// Throws an InvalidOperationException when an attempt is made to change a setting after the settings are frozen.
/// </summary>
protected void ThrowFrozenException()
{
var message = string.Format("{0} is frozen.", this.GetType().Name);
throw new InvalidOperationException(message);
}
}
}