public Task <T> FindAsync(IKey key)
{
Ensure.Condition.NotEmptyKey(key);
// Try to find snapshot.
ISnapshot snapshot = snapshotStore.Find(key);
// If snapshot exists, load only newer events; otherwise load all of them.
IEnumerable <EventModel> eventModels = null;
if (snapshot == null)
{
eventModels = store.Get(key);
}
else
{
eventModels = store.Get(key, snapshot.Version);
}
IEnumerable <object> events = eventModels.Select(e => formatter.DeserializeEvent(Type.GetType(e.EventKey.Type), e.Payload));
// If snapshot exists, create instance with it and newer events; otherwise create instance using all events.
T instance = null;
if (snapshot == null)
{
instance = factory.Create(key, events);
}
else
{
instance = factory.Create(key, snapshot, events);
}
// Return the aggregate.
return(Task.FromResult(instance));
}