dev-npgsql/npgsql: Npgsql is the .NET data provider for PostgreSQL.

src/Npgsql/NpgsqlDatabaseInfoCacheKey.cs

35 строк1 KB

Yoh Deadfall

Made database info cache key struct

15 ноя 2020, 20:03

15 ноя 2020, 20:0358ee69f

using System;

namespace Npgsql
{
    readonly struct NpgsqlDatabaseInfoCacheKey : IEquatable<NpgsqlDatabaseInfoCacheKey>
    {
        public readonly int Port;
        public readonly string? Host;
        public readonly string? Database;
        public readonly ServerCompatibilityMode CompatibilityMode;

        public NpgsqlDatabaseInfoCacheKey(NpgsqlConnectionStringBuilder connectionString)
        {
            Port = connectionString.Port;
            Host = connectionString.Host;
            Database = connectionString.Database;
            CompatibilityMode = connectionString.ServerCompatibilityMode;
        }

        public bool Equals(NpgsqlDatabaseInfoCacheKey other) =>
            Port == other.Port &&
            Host == other.Host &&
            Database == other.Database &&
            CompatibilityMode == other.CompatibilityMode;

        public override bool Equals(object? obj) =>
            obj is NpgsqlDatabaseInfoCacheKey key && key.Equals(this);

        public override int GetHashCode() =>
            Port.GetHashCode() ^
            Host?.GetHashCode() ?? 0 ^
            Database?.GetHashCode() ?? 0 ^
            CompatibilityMode.GetHashCode();
    }
}