osu/osu.Game/Database/RealmLiveUnmanaged.cs

43 lines
1.5 KiB
C#

// Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
// See the LICENCE file in the repository root for full licence text.
using System;
using Realms;
namespace osu.Game.Database
{
/// <summary>
/// Provides a method of working with unmanaged realm objects.
/// Usually used for testing purposes where the instance is never required to be managed.
/// </summary>
/// <typeparam name="T">The underlying object type.</typeparam>
public class RealmLiveUnmanaged<T> : Live<T> where T : RealmObjectBase, IHasGuidPrimaryKey
{
/// <summary>
/// The original live data used to create this instance.
/// </summary>
public override T Value { get; }
/// <summary>
/// Construct a new instance of live realm data.
/// </summary>
/// <param name="data">The realm data.</param>
public RealmLiveUnmanaged(T data)
: base(data.ID)
{
if (data.IsManaged)
throw new InvalidOperationException($"Cannot use {nameof(RealmLiveUnmanaged<T>)} with managed instances");
Value = data;
}
public override void PerformRead(Action<T> perform) => perform(Value);
public override TReturn PerformRead<TReturn>(Func<T, TReturn> perform) => perform(Value);
public override void PerformWrite(Action<T> perform) => throw new InvalidOperationException(@"Can't perform writes on a non-managed underlying value");
public override bool IsManaged => false;
}
}