public static Task HandleMeWith(this IDomainEvent domainEvent, IHandleEvents eventHandler)
{
var handlerType = eventHandler.GetType();
var eventType = domainEvent.GetType();
var handlerMethodsForEventType =
from method in handlerType.GetTypeInfo().DeclaredMethods
from parameter in method.GetParameters()
where method.IsPublic
where parameter.ParameterType == eventType
select method;
var allHandlerMethods = handlerMethodsForEventType.ToList();
if (handlerMethodsForEventType.Any() == false)
{
throw new ArgumentException($"This Event Type {eventType.Name} has no Handler Method");
}
if (handlerMethodsForEventType.Count() > 1)
{
throw new ArgumentException($"This Event Type {eventType.Name} has to much Handler Methods");
}
// Invoke the one and only Handle([Event Type]) Method
return((Task)handlerMethodsForEventType
.Single()
.Invoke(eventHandler, new object?[] { domainEvent }));
}
public static void HandleMeWith(this IAmAnEventMessage @event, IHandleEvents handler)
{
var handlerType = handler.GetType ();
var eventType = @event.GetType ();
var eventHandlerMethods =
from method in handlerType.GetTypeInfo().DeclaredMethods
from parameter in method.GetParameters ()
where parameter.ParameterType == eventType
select method;
var allMethodes = eventHandlerMethods.ToList ();
if (allMethodes.Any ()) {
if (allMethodes.Count () > 1) {
throw new MultipleHandlerMethodesDetected (eventType.Name);
}
allMethodes.First ().Invoke (handler, new object[]{ @event });
}
}
public static void HandleMeWith(this IAmAnEventMessage @event, IHandleEvents handler)
{
var handlerType = handler.GetType();
var eventType = @event.GetType();
var eventHandlerMethods =
from method in handlerType.GetTypeInfo().DeclaredMethods
from parameter in method.GetParameters()
where parameter.ParameterType == eventType
select method;
var allMethodes = eventHandlerMethods.ToList();
if (allMethodes.Any())
{
if (allMethodes.Count() > 1)
{
throw new MultipleHandlerMethodesDetected(eventType.Name);
}
allMethodes.First().Invoke(handler, new object[] { @event });
}
}