private EntityGroupTask CreateTask()
{
TypeInfo exactReferencedType;
var hasExactTypeBeenGotten = PrefetchHelper.TryGetExactKeyType(Key, Manager, out exactReferencedType);
if (hasExactTypeBeenGotten != null)
{
if (hasExactTypeBeenGotten.Value)
{
Type = exactReferencedType;
//FillColumnCollection();
needToNotifyOwner = false;
}
else
{
needToNotifyOwner = true;
}
}
else
{
return(null);
}
FillColumnCollection();
if (!SelectColumnsToBeLoaded())
{
return(null);
}
Task = new EntityGroupTask(Type, ColumnIndexesToBeLoaded.ToArray(), Manager);
return(Task);
}
private void RegisterFetchByKnownForeignKey(PrefetchFieldDescriptor referencingFieldDescriptor,
EntityState ownerState)
{
var association = referencingFieldDescriptor.Field.Associations.Last();
var referencedKeyTuple = association
.ExtractForeignKey(ownerState.Type, ownerState.Tuple);
var referencedKeyTupleState = referencedKeyTuple.GetFieldStateMap(TupleFieldState.Null);
for (var i = 0; i < referencedKeyTupleState.Length; i++)
{
if (referencedKeyTupleState[i])
{
return;
}
}
var session = Manager.Owner.Session;
var referencedKey = Key.Create(session.Domain, session.StorageNodeId,
association.TargetType, TypeReferenceAccuracy.BaseType,
referencedKeyTuple);
var targetType = association.TargetType;
var areToNotifyOwner = true;
TypeInfo exactReferencedType;
var hasExactTypeBeenGotten = PrefetchHelper.TryGetExactKeyType(referencedKey, Manager,
out exactReferencedType);
if (hasExactTypeBeenGotten != null)
{
if (hasExactTypeBeenGotten.Value)
{
targetType = exactReferencedType;
areToNotifyOwner = false;
}
}
else
{
return;
}
var fieldsToBeLoaded = PrefetchHelper
.GetCachedDescriptorsForFieldsLoadedByDefault(session.Domain, targetType);
var graphContainer = Manager.SetUpContainers(referencedKey, targetType,
fieldsToBeLoaded, true, null, true);
if (areToNotifyOwner)
{
graphContainer.RootEntityContainer.SetParametersOfReference(referencingFieldDescriptor, referencedKey);
}
}