public void Process <TAggregateRoot>(Command <TAggregateRoot> command) where TAggregateRoot : AggregateRoot, new()
{
var aggregateId = command.AggregateId;
var aggregate = _aggregateFactory.Get <TAggregateRoot>(aggregateId);
if (aggregate == null)
{
aggregate = _aggregateFactory.Create <TAggregateRoot>(aggregateId);
var eventHistory = new List <DomainEvent>();
if (_eventStore.Exists(aggregateId))
{
// Get all events for aggregate here from eventstore
eventHistory = _eventStore.Load(aggregateId);
}
// Load all events
aggregate.LoadsFromHistory(eventHistory);
}
// Execute command
command.Execute(aggregate);
// Get uncommitted events
var uncommittedEvents = aggregate.GetUncommittedChanges();
// Save uncommitted events to eventstore
_eventStore.Save(aggregateId, uncommittedEvents);
// Clear uncommitted changes
aggregate.MarkChangesAsCommitted();
}
public async Task <object[]> Handle(CancelReservation command, CancellationToken cancellationToken)
{
var reservationId = command.Id;
//use factory to get entity info
var reservation = await _reservationFactory.Get(reservationId, cancellationToken);
//persist and publish
await _eventStoreClient.Save(reservation, reservationId);
//return events
return(new object[] { });
}
public async Task <object[]> Handle(CancelReservation command, CancellationToken cancellationToken)
{
var reservationId = command.Id;
//use factory to get entity info
var reservation = await _reservationFactory.Get(reservationId, cancellationToken);
//do something on reservation to raise events
var events = reservation.Cancel(command);
//persist and publish
await _eventStoreClient.Save(reservation, reservationId);
//return events
return(events.ToArray());
}
public async Task <object[]> Handle(AddRoom command, CancellationToken cancellationToken)
{
var roomId = command.RoomId;
//use factory to get entity info
var room = await _roomFactory.Get(roomId, cancellationToken);
//do something on housekeeping room to raise events
var events = room.Add(command);
//persist and publish
await _eventStoreClient.Save(room, roomId);
//return events
return(events.ToArray());
}
