/// <summary>
/// Saves changes to the respective stream
/// NOTES: Current implementation doesn't support cancellation token
/// </summary>
/// <param name="eventsToAdd"></param>
/// <param name="snapshot"></param>
/// <param name="cancellationToken"></param>
/// <returns></returns>
protected override async Task <int> SaveChanges(ItemWithType[] eventsToAdd,
TState snapshot,
CancellationToken?cancellationToken)
{
checked
{
CheckDisposedState();
ConditionalWriteResult writeResult;
writeResult = await eventStoreConnection.ConditionalAppendToStreamAsync(
streamName,
this.ConcurrencyId,
eventsToAdd.Select(eventObject => eventObject.CreateEventData()))
.ConfigureAwait(false);
StreamAppendHelpers.CheckConditionalWriteResultStatus(writeResult, streamName);
if (!writeResult.NextExpectedVersion.HasValue)
{
throw new InvalidOperationException("Eventstore data write outcome unexpected. NextExpectedVersion is null");
}
await Initialize();
ConsiderSessionDisposed();
return((int)writeResult.NextExpectedVersion.Value);
}
}
private async Task SoftDeleteByEventImpl(TId selector, EventData softDeleteEvent)
{
var id = selector.ToString();
var expectedVersion = await GetLastEventNumber(id);
var writeResult = await connection.ConditionalAppendToStreamAsync(
id,
expectedVersion,
new[] { softDeleteEvent })
.ConfigureAwait(false);
StreamAppendHelpers.CheckConditionalWriteResultStatus(writeResult, id);
}
