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GeoJsonCoordinates.cs
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GeoJsonCoordinates.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.ObjectModel;
using System.Linq;
using MongoDB.Bson.Serialization.Attributes;
using MongoDB.Driver.GeoJsonObjectModel.Serializers;
using MongoDB.Shared;
namespace MongoDB.Driver.GeoJsonObjectModel
{
/// <summary>
/// Represents a GeoJson position in some coordinate system (see subclasses).
/// </summary>
[BsonSerializer(typeof(GeoJsonCoordinatesSerializer))]
public abstract class GeoJsonCoordinates : IEquatable<GeoJsonCoordinates>
{
// public properties
/// <summary>
/// Gets the coordinate values.
/// </summary>
public abstract ReadOnlyCollection<double> Values { get; }
// public operators
/// <summary>
/// Determines whether two <see cref="GeoJsonCoordinates"/> instances are equal.
/// </summary>
/// <param name="lhs">The LHS.</param>
/// <param name="rhs">The RHS.</param>
/// <returns>
/// <c>true</c> if the left hand side is equal to the right hand side; otherwise, <c>false</c>.
/// </returns>
public static bool operator ==(GeoJsonCoordinates lhs, GeoJsonCoordinates rhs)
{
return object.Equals(lhs, rhs); // handles lhs == null correctly
}
/// <summary>
/// Determines whether two <see cref="GeoJsonCoordinates"/> instances are not equal.
/// </summary>
/// <param name="lhs">The LHS.</param>
/// <param name="rhs">The RHS.</param>
/// <returns>
/// <c>true</c> if the left hand side is not equal to the right hand side; otherwise, <c>false</c>.
/// </returns>
public static bool operator !=(GeoJsonCoordinates lhs, GeoJsonCoordinates rhs)
{
return !(lhs == rhs);
}
// public methods
/// <summary>
/// Determines whether the specified <see cref="GeoJsonCoordinates" /> is equal to this instance.
/// </summary>
/// <param name="obj">The <see cref="GeoJsonCoordinates" /> to compare with this instance.</param>
/// <returns>
/// <c>true</c> if the specified <see cref="GeoJsonCoordinates" /> is equal to this instance; otherwise, <c>false</c>.
/// </returns>
public bool Equals(GeoJsonCoordinates obj)
{
return Equals((object)obj); // handles obj == null correctly
}
/// <summary>
/// Determines whether the specified <see cref="System.Object" /> is equal to this instance.
/// </summary>
/// <param name="obj">The <see cref="System.Object" /> to compare with this instance.</param>
/// <returns>
/// <c>true</c> if the specified <see cref="System.Object" /> is equal to this instance; otherwise, <c>false</c>.
/// </returns>
public override bool Equals(object obj)
{
if (object.ReferenceEquals(obj, null) || GetType() != obj.GetType()) { return false; }
var rhs = (GeoJsonCoordinates)obj;
return Values.SequenceEqual(rhs.Values);
}
/// <summary>
/// Returns a hash code for this instance.
/// </summary>
/// <returns>
/// A hash code for this instance, suitable for use in hashing algorithms and data structures like a hash table.
/// </returns>
public override int GetHashCode()
{
return new Hasher()
.Hash(GetType().GetHashCode())
.HashStructElements(Values)
.GetHashCode();
}
}
}