private IEnumerable <IProcessingElement> FetchFromPersistentStoreAndCorrelateWithBuffer()
{
var fetchedFromPersistentStore = _persistentStore.Fetch(null, _fetchSize);
if (!fetchedFromPersistentStore.Any() || CorrelateWithBufffer(fetchedFromPersistentStore))
{
_inMemoryMode = true;
}
return(fetchedFromPersistentStore);
}
private IEnumerable <IProcessingElement> FetchFromPersistentStoreAndCorrelateWithBuffer(string pipelineName)
{
// We need to copy the fetched items to prevent fetchedFromPersistentStore.Any()
// and/or CorrelateWithBufffer consuming events and not returning them.
// Rx extensions MemoizeAll would be a good solution, but I'm not sure we want
// an extra dependency, ToList is fine as long as _fetchSize is reasonable.
var fetchedFromPersistentStore = _persistentStore.Fetch(pipelineName, _fetchSize).ToList();
if (!fetchedFromPersistentStore.Any() || CorrelateWithBufffer(fetchedFromPersistentStore))
{
_inMemoryMode = true;
}
return(fetchedFromPersistentStore);
}
private void Fetch(FetchDirective directive)
{
lock (_fetchLock)
{
_activeFetchRequest = true;
var elements = _elementStore.Fetch(_pipelineName, directive.MaxCount);
foreach (var element in elements)
{
element.SequenceNumber = _sequence++;
OnElementFetched(new ElementFetchedEventArgs(element));
}
_activeFetchRequest = false;
}
}
public IEnumerable <IProcessingElement> Fetch(string pipelineName, int maxCount)
{
return(_wrappedStore.Fetch(pipelineName, maxCount));
}