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ChangeStreamUpdateDescription.cs
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ChangeStreamUpdateDescription.cs
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/* Copyright 2017-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.Linq;
using MongoDB.Bson;
using MongoDB.Driver.Core.Misc;
using MongoDB.Shared;
namespace MongoDB.Driver
{
/// <summary>
/// An UpdateDescription in a ChangeStreamDocument instance.
/// </summary>
public sealed class ChangeStreamUpdateDescription
{
// private fields
private readonly string[] _removedFields;
private readonly BsonArray _truncatedArrays;
private readonly BsonDocument _updatedFields;
// constructors
/// <summary>
/// Initializes a new instance of the <see cref="ChangeStreamUpdateDescription" /> class.
/// </summary>
/// <param name="updatedFields">The updated fields.</param>
/// <param name="removedFields">The removed fields.</param>
public ChangeStreamUpdateDescription(
BsonDocument updatedFields,
string[] removedFields)
: this(updatedFields, removedFields, null)
{
}
/// <summary>
/// Initializes a new instance of the <see cref="ChangeStreamUpdateDescription" /> class.
/// </summary>
/// <param name="updatedFields">The updated fields.</param>
/// <param name="removedFields">The removed fields.</param>
/// <param name="truncatedArrays">The truncated arrays.</param>
public ChangeStreamUpdateDescription(
BsonDocument updatedFields,
string[] removedFields,
BsonArray truncatedArrays)
{
_updatedFields = Ensure.IsNotNull(updatedFields, nameof(updatedFields));
_removedFields = Ensure.IsNotNull(removedFields, nameof(removedFields));
_truncatedArrays = truncatedArrays; // can be null
}
// public properties
/// <summary>
/// Gets the removed fields.
/// </summary>
/// <value>
/// The removed fields.
/// </value>
public string[] RemovedFields => _removedFields;
/// <summary>
/// Gets the truncated arrays.
/// </summary>
/// <value>
/// The truncated arrays.
/// </value>
public BsonArray TruncatedArrays => _truncatedArrays;
/// <summary>
/// Gets the updated fields.
/// </summary>
/// <value>
/// The updated fields.
/// </value>
public BsonDocument UpdatedFields => _updatedFields;
// public methods
/// <inheritdoc />
public override bool Equals(object obj)
{
if (obj == null || obj.GetType() != typeof(ChangeStreamUpdateDescription))
{
return false;
}
var other = (ChangeStreamUpdateDescription)obj;
return
_removedFields.SequenceEqual(other._removedFields) &&
_updatedFields.Equals(other._updatedFields) &&
object.Equals(_truncatedArrays, other._truncatedArrays);
}
/// <inheritdoc />
public override int GetHashCode()
{
return new Hasher()
.HashElements(_removedFields)
.Hash(_updatedFields)
.Hash(_truncatedArrays)
.GetHashCode();
}
}
}