private static Dictionary <Tuple <Type, string>, Type> BuildCommandTypeIndex()
{
return(Discover.ConcreteTypesDerivedFrom(typeof(ICommand))
.Select(commandType => new
{
commandType,
targetType = commandType.GetInterface("ICommand`1")
.IfNotNull()
.Then(i => i.GetGenericArguments().Single())
.ElseDefault()
})
.ToDictionary(
p => Tuple.Create(p.targetType, p.commandType.Name),
p => p.commandType));
}
internal static Type[] ConcreteTypesOf(Type eventType)
{
var types = Discover.ConcreteTypesDerivedFrom(eventType);
if (!typeof(IScheduledCommand).IsAssignableFrom(eventType))
{
return(types.ToArray());
}
if (eventType.IsGenericType)
{
var type = typeof(CommandScheduled <>).MakeGenericType(eventType.GetGenericArguments());
return(types.Concat(new[] { type })
.Distinct()
.ToArray());
}
return(types.Concat(AggregateType.KnownTypes.Select(t => typeof(CommandScheduled <>).MakeGenericType(t)).ToArray())
.Distinct()
.ToArray());
}
/// <summary> /// Returns all known concrete event types. /// </summary> public static IEnumerable <Type> KnownTypes() => Discover.ConcreteTypesDerivedFrom(typeof(IEvent));