public static Type GetStreamMessageType <TKey, TPayload>()
{
if (Config.ForceRowBasedExecution)
{
return(typeof(StreamMessage <TKey, TPayload>));
}
if (!typeof(TPayload).CanRepresentAsColumnar())
{
return(typeof(StreamMessage <TKey, TPayload>));
}
var typeOfTKey = typeof(TKey);
var typeOfTPayload = typeof(TPayload);
var lookupKey = CacheKey.Create(typeOfTKey, typeOfTPayload);
return(cachedObjects.GetOrAdd(lookupKey, key => Transformer.GenerateBatchClass <TKey, TPayload>()));
}