public void SaveEvents(Guid aggregateId, IEnumerable <Event> events, int expectedVersion)
{
List <EventDescriptor> eventDescriptors;
// try to get event descriptors list for given aggregate id
// otherwise -> create empty dictionary
if (!_current.TryGetValue(aggregateId, out eventDescriptors))
{
eventDescriptors = new List <EventDescriptor>();
_current.Add(aggregateId, eventDescriptors);
}
// check whether latest event version matches current aggregate version
// otherwise -> throw exception
else if (eventDescriptors[eventDescriptors.Count - 1].Version != expectedVersion && expectedVersion != -1)
{
throw new ConcurrencyException();
}
var i = expectedVersion;
// iterate through current aggregate events increasing version with each processed event
foreach (var @event in events)
{
i++;
@event.Version = i;
// push event to the event descriptors list for current aggregate
eventDescriptors.Add(new EventDescriptor(aggregateId, @event, i));
//save event to database
using (var dataStoreContext = new SqlDataStoreContext())
{
var manteqEvent = new ManteqEvent();
manteqEvent.AggregateId = aggregateId;
manteqEvent.Version = @event.Version;
manteqEvent.Data = SerializeObject(@event);
dataStoreContext.ManteqEvents.Add(manteqEvent);
dataStoreContext.SaveChanges();
}
// publish current event to the bus for further processing by subscribers
_publisher.Publish(@event);
}
}
public void SaveEvents(Guid aggregateId, IEnumerable<Event> events, int expectedVersion)
{
List<EventDescriptor> eventDescriptors;
// try to get event descriptors list for given aggregate id
// otherwise -> create empty dictionary
if(!_current.TryGetValue(aggregateId, out eventDescriptors))
{
eventDescriptors = new List<EventDescriptor>();
_current.Add(aggregateId,eventDescriptors);
}
// check whether latest event version matches current aggregate version
// otherwise -> throw exception
else if(eventDescriptors[eventDescriptors.Count - 1].Version != expectedVersion && expectedVersion != -1)
{
throw new ConcurrencyException();
}
var i = expectedVersion;
// iterate through current aggregate events increasing version with each processed event
foreach (var @event in events)
{
i++;
@event.Version = i;
// push event to the event descriptors list for current aggregate
eventDescriptors.Add(new EventDescriptor(aggregateId,@event,i));
//save event to database
using (var dataStoreContext = new SqlDataStoreContext())
{
var manteqEvent = new ManteqEvent();
manteqEvent.AggregateId = aggregateId;
manteqEvent.Version = @event.Version;
manteqEvent.Data = SerializeObject(@event);
dataStoreContext.ManteqEvents.Add(manteqEvent);
dataStoreContext.SaveChanges();
}
// publish current event to the bus for further processing by subscribers
_publisher.Publish(@event);
}
}
