/// <summary>
/// Fetches all events from the AR's stream and re-hydrates the AR
/// using all events
/// </summary>
/// <param name="id">AR id</param>
/// <returns>AR instance</returns>
public TAggregateRoot Get(string id)
{
var streamId = id;
if (string.IsNullOrEmpty(id))
{
throw new ArgumentException(string.Format(
"Aggregate ID was not specified when trying to get by id {0} aggregate", typeof(TAggregateRoot).FullName));
}
var snapshot = _snapshots.LoadAsync(streamId).Result;
var aggregateStateType = GetAggregateStateType(typeof(TAggregateRoot));
object state;
EventsStream stream;
if (snapshot == null)
{
state = CreateAggregateState(aggregateStateType);
stream = _eventSource.GetEventsStream(streamId);
}
else
{
state = _serializer.Deserialize(snapshot.Payload, aggregateStateType);
stream = _eventSource.GetEventsStream(streamId, snapshot.StreamVersion + 1);
}
var aggregate = new TAggregateRoot();
StateSpooler.Spool(state ?? aggregate, stream.Events);
aggregate.Setup(state, stream.End);
return(aggregate);
}
/// <summary>
/// Apply event to the state and add to uncommited events
/// </summary>
/// <param name="evnt">the event</param>
public void Apply(IEvent evnt)
{
if (string.IsNullOrEmpty(evnt.Id))
{
throw new NoAggregateIdException(string.Format("Event {0} has null (or empty) ID property. You may trying to update the aggregate that has not been created. Make sure you specify it on event creation", evnt.GetType().FullName));
}
StateSpooler.Spool(_state, evnt);
_changes.Add(evnt);
}
