private bool CanGenerateColumnar()
{
var typeOfTOuterKey = typeof(TOuterKey);
var typeOfTSource = typeof(TSource);
var typeOfTInnerKey = typeof(TInnerKey);
if (!typeOfTSource.CanRepresentAsColumnar())
{
return(false);
}
if (typeOfTOuterKey.GetPartitionType() != null)
{
return(false);
}
if (typeOfTInnerKey.GetPartitionType() != null)
{
return(false);
}
var lookupKey = CacheKey.Create(KeySelector.ToString());
var comparer = (Properties.KeyEqualityComparer as CompoundGroupKeyEqualityComparer <TOuterKey, TInnerKey>).innerComparer.GetGetHashCodeExpr();
var generatedPipeType = cachedPipes.GetOrAdd(lookupKey, key => GroupTemplate.Generate <TOuterKey, TSource, TInnerKey>(comparer, KeySelector, true));
errorMessages = generatedPipeType.Item2;
return(generatedPipeType.Item1 != null);
}
private bool CanGenerateColumnar()
{
var typeOfTOuterKey = typeof(TOuterKey);
var typeOfTSource = typeof(TSource);
var typeOfTInnerKey = typeof(TInnerKey);
if (!typeOfTSource.CanRepresentAsColumnar())
{
return(false);
}
if (typeOfTOuterKey.GetPartitionType() != null)
{
return(false);
}
if (typeOfTInnerKey.GetPartitionType() != null)
{
return(false);
}
// For now, restrict the inner key to be anything other than an anonymous type since those can't be ungrouped without using reflection.
if (typeOfTInnerKey.IsAnonymousType())
{
return(false);
}
var lookupKey = CacheKey.Create(KeySelector.ToString());
var comparer = Properties.KeyEqualityComparer.GetGetHashCodeExpr();
var generatedPipeType = cachedPipes.GetOrAdd(lookupKey, key => GroupTemplate.Generate <TOuterKey, TSource, TInnerKey>(comparer, KeySelector, false));
errorMessages = generatedPipeType.Item2;
return(generatedPipeType.Item1 != null);
}
private IStreamObserver <TOuterKey, TSource> GetPipe(IStreamObserver <CompoundGroupKey <TOuterKey, TInnerKey>, TSource> observer)
{
var lookupKey = CacheKey.Create(KeySelector.ToString());
var comparer = (Properties.KeyEqualityComparer as CompoundGroupKeyEqualityComparer <TOuterKey, TInnerKey>).innerComparer.GetGetHashCodeExpr();
var generatedPipeType = cachedPipes.GetOrAdd(lookupKey, key => GroupTemplate.Generate <TOuterKey, TSource, TInnerKey>(comparer, KeySelector, true));
Func <PlanNode, IQueryObject, PlanNode> planNode = ((PlanNode p, IQueryObject o) => new GroupPlanNode(
p,
o,
typeof(TOuterKey),
typeof(CompoundGroupKey <TOuterKey, TInnerKey>),
typeof(TSource),
KeySelector,
int.MinValue,
1,
false,
true,
generatedPipeType.Item2));
var instance = Activator.CreateInstance(generatedPipeType.Item1, this, observer, comparer, KeySelector, planNode);
var returnValue = (IStreamObserver <TOuterKey, TSource>)instance;
return(returnValue);
}
