forked from ddrilling/AsbCloudServer
55 lines
1.4 KiB
C#
55 lines
1.4 KiB
C#
using AsbCloudApp.Data;
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using System.Collections.Generic;
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using System.Diagnostics.CodeAnalysis;
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namespace AsbCloudApp.Comparators
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{
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/// <summary>
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/// Компаратор для сравнения сущностей по ID
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/// </summary>
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public class ComparerIId : IComparer<IId>, IEqualityComparer<IId>
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{
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private static readonly ComparerIId instance = new();
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private ComparerIId() { }
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/// <summary>
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/// Singleton ссылка
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/// </summary>
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/// <returns></returns>
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public static ComparerIId GetInstance() => instance;
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/// <summary>
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///
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/// </summary>
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/// <param name="x"></param>
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/// <param name="y"></param>
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/// <returns></returns>
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public int Compare(IId? x, IId? y)
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=> (x?.Id??0).CompareTo(y?.Id??0);
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/// <summary>
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///
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/// </summary>
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/// <param name="x"></param>
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/// <param name="y"></param>
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/// <returns></returns>
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public bool Equals(IId? x, IId? y)
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{
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if (x is not null && y is not null)
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return x.Id == y.Id;
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return x == y;
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}
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/// <summary>
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///
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/// </summary>
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/// <param name="obj"></param>
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/// <returns></returns>
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public int GetHashCode([DisallowNull] IId obj) =>
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obj.GetHashCode();
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}
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}
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