protected override void SaveAggregate(Aggregate aggregate, Guid transactionId)
{
//Taken from https://github.com/pgermishuys/getting-started-with-event-store/blob/master/src/GetEventStoreRepository/GetEventStoreRepository.cs
var commitHeaders = new Dictionary <string, object>
{
{ CommitIdHeader, transactionId },
{ AggregateClrTypeHeader, aggregate.GetType().AssemblyQualifiedName }
};
IList <Event> newEvents = aggregate.GetUncommittedEvents();
int originalVersion = aggregate.Version - newEvents.Count;
int expectedVersion = originalVersion; //http://stackoverflow.com/a/20204729
if (originalVersion == 0)
{
expectedVersion = ExpectedVersion.NoStream;
}
IEnumerable <EventData> eventsToSave = newEvents.Select(e => ToEventData(Guid.NewGuid(), e, commitHeaders));
string streamName = GetStreamName(aggregate.GetType(), aggregate.Id);
if (eventsToSave.Count() < WritePageSize)
{
connection.AppendToStreamAsync(streamName, ExpectedVersion.Any, eventsToSave).Wait();
}
else
{
var transaction = connection.StartTransactionAsync(streamName, expectedVersion).Result;
var position = 0;
while (position < eventsToSave.Count())
{
var pageEvents = eventsToSave.Skip(position).Take(WritePageSize);
transaction.WriteAsync(pageEvents).Wait();
position += WritePageSize;
}
transaction.CommitAsync().Wait();
}
aggregate.ClearUncommittedEvents();
}
/// <inheritdoc />
public async Task StoreAsync(Aggregate aggregate, IDocumentSession transientSession = null)
{
using (var session = transientSession ?? _store.OpenSession())
{
// Take non-persisted events, push them to the event stream, indexed by the aggregate ID
var events = aggregate.GetUncommittedEvents().ToArray();
session.Events.Append(aggregate.Id.Value, events);
//Only save and publish changes if it is our own session (meaning none supplied)
if (transientSession == null)
{
await session.SaveChangesAsync();
await PublishEventsAsync(events);
// Once successfully persisted, clear events from list of uncommitted events
aggregate.ClearUncommittedEvents();
}
}
}
public void SaveChanges(Aggregate aggregate)
{
SaveEvents(new AggregateKey(aggregate.GetType(), aggregate.AggregateId), aggregate.Revision, aggregate.UncommittedChanges());
aggregate.ClearUncommittedEvents();
}
public void SaveChanges(Aggregate aggregate)
{
SaveEvents(new AggregateKey(aggregate.GetType(), aggregate.AggregateId), aggregate.Revision, aggregate.UncommittedChanges());
aggregate.ClearUncommittedEvents();
}
