private bool ProcessEventByHandler(
string partition, EventReaderSubscriptionMessage.CommittedEventReceived message, out string newState,
out string newSharedState, out string projectionResult, out EmittedEventEnvelope[] emittedEvents)
{
projectionResult = null;
var newPatitionInitialized = InitOrLoadHandlerState(partition);
_stopwatch.Start();
EmittedEventEnvelope[] eventsEmittedOnInitialization = null;
if (newPatitionInitialized)
{
_projectionStateHandler.ProcessPartitionCreated(
partition, message.CheckpointTag, message.Data, out eventsEmittedOnInitialization);
}
var result = _projectionStateHandler.ProcessEvent(
partition, message.CheckpointTag, message.EventCategory, message.Data, out newState, out newSharedState,
out emittedEvents);
if (result)
{
var oldState = _partitionStateCache.GetLockedPartitionState(partition);
//TODO: depending on query processing final state to result transformation should happen either here (if EOF) on while writing results
if (/*_producesRunningResults && */ oldState.State != newState)
{
if (_definesStateTransform)
{
projectionResult = _projectionStateHandler.TransformStateToResult();
}
else
{
projectionResult = newState;
}
}
else
{
projectionResult = oldState.Result;
}
}
_stopwatch.Stop();
if (eventsEmittedOnInitialization != null)
{
if (emittedEvents == null || emittedEvents.Length == 0)
{
emittedEvents = eventsEmittedOnInitialization;
}
else
{
emittedEvents = eventsEmittedOnInitialization.Concat(emittedEvents).ToArray();
}
}
return(result);
}
