public CommittedEventStream ReadFrom(Guid id, long minVersion, long maxVersion)
{
NcqrsEventStoreContext eventContext = new NcqrsEventStoreContext(id, account, prefix);
IQueryable<NcqrsEvent> storeEvents = eventContext.Events;
// 628426 20 Feb 2011
// Azure Table Storage Client struggles with lambdas where the rvalue is long.Min and .Max
// so the following code added when interface changed to no longer use Nullable<long>
if (minVersion != long.MinValue)
{
storeEvents = storeEvents.Where(e => e.Sequence >= minVersion);
}
if (maxVersion != long.MaxValue)
{
storeEvents = storeEvents.Where(e => e.Sequence <= maxVersion);
}
storeEvents = storeEvents.ToList().OrderBy(e => e.Sequence).AsQueryable();
IEnumerable<CommittedEvent> committedEvents = storeEvents.Select(
e => new CommittedEvent(
e.CommitId,
Guid.Parse(e.RowKey),
Guid.Parse(e.PartitionKey),
e.Sequence,
e.Timestamp,
Utility.DeJsonize(e.Data, e.Name),
Version.Parse(e.Version)
)
);
return new CommittedEventStream(id, committedEvents);
}
public CommittedEventStream ReadFrom(Guid id, long minVersion, long maxVersion)
{
NcqrsEventStoreContext eventContext = new NcqrsEventStoreContext(id, account, prefix);
IQueryable <NcqrsEvent> storeEvents = eventContext.Events;
// 628426 20 Feb 2011
// Azure Table Storage Client struggles with lambdas where the rvalue is long.Min and .Max
// so the following code added when interface changed to no longer use Nullable<long>
if (minVersion != long.MinValue)
{
storeEvents = storeEvents.Where(e => e.Sequence >= minVersion);
}
if (maxVersion != long.MaxValue)
{
storeEvents = storeEvents.Where(e => e.Sequence <= maxVersion);
}
storeEvents = storeEvents.ToList().OrderBy(e => e.Sequence).AsQueryable();
IEnumerable <CommittedEvent> committedEvents = storeEvents.Select(
e => new CommittedEvent(
e.CommitId,
Guid.Parse(e.RowKey),
Guid.Parse(e.PartitionKey),
e.Sequence,
e.Timestamp,
Utility.DeJsonize(e.Data, e.Name),
Version.Parse(e.Version)
)
);
return(new CommittedEventStream(id, committedEvents));
}
private void SaveEvents(Guid eventSourceId,
IEnumerable<UncommittedEvent> events)
{
string eventSourceName = events.First().GetType().ToString();
long initialVersion = events.First().InitialVersionOfEventSource;
long lastVersion = initialVersion + events.Count();
NcqrsEventStoreContext storeContext = new NcqrsEventStoreContext(eventSourceId, account, prefix);
Guid commitId = storeContext.BeginCommit();
NcqrsEventSource lastSource = storeContext.LatestEventSource;
if (lastSource == null)
{
lastSource = new NcqrsEventSource(eventSourceId,
initialVersion,
eventSourceName);
}
else if (lastSource.Version != initialVersion)
{
throw new ConcurrencyException(eventSourceId, initialVersion);
}
foreach (UncommittedEvent @event in events)
{
storeContext.Add(new NcqrsEvent(@event));
}
lastSource.Version = lastVersion;
storeContext.SaveSource(lastSource);
storeContext.EndCommit();
}
private void SaveEvents(Guid eventSourceId,
IEnumerable <UncommittedEvent> events)
{
string eventSourceName = events.First().GetType().ToString();
long initialVersion = events.First().InitialVersionOfEventSource;
long lastVersion = initialVersion + events.Count();
NcqrsEventStoreContext storeContext = new NcqrsEventStoreContext(eventSourceId, account, prefix);
Guid commitId = storeContext.BeginCommit();
NcqrsEventSource lastSource = storeContext.LatestEventSource;
if (lastSource == null)
{
lastSource = new NcqrsEventSource(eventSourceId,
initialVersion,
eventSourceName);
}
else if (lastSource.Version != initialVersion)
{
throw new ConcurrencyException(eventSourceId, initialVersion);
}
foreach (UncommittedEvent @event in events)
{
storeContext.Add(new NcqrsEvent(@event));
}
lastSource.Version = lastVersion;
storeContext.SaveSource(lastSource);
storeContext.EndCommit();
}
