public void Handle(ICommand command)
{
IEventStream eventStream = _eventStore.Load(command.AggregateId);
Type type = GetTargetType(command);
IAmAggregate root = CreateAggregate(type);
if (root == null)
{
throw new InvalidOperationException("Could not get instance for aggreagate from command.");
}
foreach (var @event in eventStream)
{
root.Process(@event);
//Process(root, @event);
}
var events = Handle(root, command);
if (events != null && events.Any())
{
var tag = EventTags.GetOrCreateIfNotExists(type);
_eventStore.Store(tag, command.AggregateId, eventStream.Version, events);
}
}
private IEnumerable <IEvent> Handle(IAmAggregate root, ICommand command)
{
var type = root.GetType();
var paramType = command.GetType();
var methodInfo = type.GetMethods().Where(m => m.Name == "Handle" && m.GetParameters()[0].ParameterType == paramType).SingleOrDefault();
if (methodInfo != null)
{
return(methodInfo.Invoke(root, new[] { command }) as IEnumerable <IEvent>);
}
throw new InvalidOperationException("No 'Handle' method on aggregate to handle " + paramType.Name);
}
private IEnumerable<IEvent> Handle(IAmAggregate root, ICommand command)
{
var type = root.GetType();
var paramType = command.GetType();
var methodInfo = type.GetMethods().Where(m => m.Name == "Handle" && m.GetParameters()[0].ParameterType == paramType).SingleOrDefault();
if (methodInfo != null)
{
return methodInfo.Invoke(root, new[] { command }) as IEnumerable<IEvent>;
}
throw new InvalidOperationException("No 'Handle' method on aggregate to handle " + paramType.Name);
}