osu-lazer/osu.Game/Database/IDatabaseContextFactory.cs

// Copyright (c) 2007-2018 ppy Pty Ltd <contact@ppy.sh>.
// Licensed under the MIT Licence - https://raw.githubusercontent.com/ppy/osu/master/LICENCE

namespace osu.Game.Database
{
    public interface IDatabaseContextFactory
    {
        /// <summary>
        /// Get a context for read-only usage.
        /// </summary>
        OsuDbContext Get();

        /// <summary>
        /// Request a context for write usage. Can be consumed in a nested fashion (and will return the same underlying context).
        /// This method may block if a write is already active on a different thread.
        /// </summary>
        /// <param name="withTransaction">Whether to start a transaction for this write.</param>
        /// <returns>A usage containing a usable context.</returns>
        DatabaseWriteUsage GetForWrite(bool withTransaction = true);
    }
}