squidex/backend/src/Squidex.Infrastructure/Commands/DefaultDomainObjectFactory.cs

// ==========================================================================
//  Squidex Headless CMS
// ==========================================================================
//  Copyright (c) Squidex UG (haftungsbeschraenkt)
//  All rights reserved. Licensed under the MIT license.
// ==========================================================================

using Microsoft.Extensions.DependencyInjection;
using Squidex.Infrastructure.States;

#pragma warning disable RECS0108 // Warns about static fields in generic types

namespace Squidex.Infrastructure.Commands
{
    public sealed class DefaultDomainObjectFactory : IDomainObjectFactory
    {
        private readonly IServiceProvider serviceProvider;

        private static class DefaultFactory<T>
        {
            private static readonly ObjectFactory ObjectFactory =
                ActivatorUtilities.CreateFactory(typeof(T), new[] { typeof(DomainId) });

            public static T Create(IServiceProvider serviceProvider, DomainId id)
            {
                return (T)ObjectFactory(serviceProvider, new object[] { id });
            }
        }

        private static class PersistenceFactory<T, TState>
        {
            private static readonly ObjectFactory ObjectFactory =
                ActivatorUtilities.CreateFactory(typeof(T), new[] { typeof(DomainId), typeof(IPersistenceFactory<TState>) });

            public static T Create(IServiceProvider serviceProvider, DomainId id, IPersistenceFactory<TState> persistenceFactory)
            {
                return (T)ObjectFactory(serviceProvider, new object[] { id, persistenceFactory });
            }
        }

        public DefaultDomainObjectFactory(IServiceProvider serviceProvider)
        {
            this.serviceProvider = serviceProvider;
        }

        public T Create<T>(DomainId id)
        {
            return DefaultFactory<T>.Create(serviceProvider, id);
        }

        public T Create<T, TState>(DomainId id, IPersistenceFactory<TState> factory)
        {
            return PersistenceFactory<T, TState>.Create(serviceProvider, id, factory);
        }
    }
}