public void SaveEvents(Guid id, IEnumerable<Event> events, int expectedVersion)
{
EventDescriptionCollection collection = GetEventDescriptionCollection(id);
// PERHAPS: If it's an entirely new event stream, no use in querying the database
//if (events.First().Version != -1)
//{
// collection = GetEventDescriptionCollection(id);
//}
if (collection == null)
{
collection = new EventDescriptionCollection(id);
}
else if (collection.Items.Any() && collection.LatestVersion != expectedVersion)
{
throw new ConcurrencyException();
}
foreach (var @event in events)
{
expectedVersion++;
@event.Version = expectedVersion;
collection.Add(id, @event);
}
PersistEventDescriptionCollection(collection);
foreach (var @event in events)
{
_serviceBus.Publish(@event);
}
}
protected override void PersistEventDescriptionCollection(EventDescriptionCollection collection)
{
lock (_syncLock)
{
if (!_eventStore.ContainsKey(collection.Id))
{
_eventStore.Add(collection.Id, collection);
}
}
}
protected abstract void PersistEventDescriptionCollection(EventDescriptionCollection collection);
protected override void PersistEventDescriptionCollection(EventDescriptionCollection collection)
{
_repository.Put(collection);
}
