/// <summary> /// Creates a buffer handling state needed by this coordinator. /// </summary> internal abstract Coordinator CreateCoordinator(Coordinator parent, Coordinator next);
internal Coordinator(CoordinatorFactory <T> coordinatorFactory, Coordinator parent, Coordinator next)
: base(coordinatorFactory, parent, next)
{
TypedCoordinatorFactory = coordinatorFactory;
// generate all children
Coordinator nextChild = null;
foreach (var nestedCoordinator in coordinatorFactory.NestedCoordinators.Reverse())
{
// last child processed is first child...
Child = nestedCoordinator.CreateCoordinator(this, nextChild);
nextChild = Child;
}
IsUsingElementCollection = !IsRoot && (typeof(T) != typeof(RecordState));
}
private void MaterializeRow()
{
Coordinator currentCoordinator = _shaper.RootCoordinator;
var depth = 0;
var haveInitializedChildren = false;
for (; depth < _current.Length; depth++)
{
// find a coordinator at this depth that currently has data (if any)
while (currentCoordinator != null &&
!currentCoordinator.CoordinatorFactory.HasData(_shaper))
{
currentCoordinator = currentCoordinator.Next;
}
if (null == currentCoordinator)
{
break;
}
// check if this row contains a new element for this coordinator
if (currentCoordinator.HasNextElement(_shaper))
{
// if we have children and haven't initialized them yet, do so now
if (!haveInitializedChildren &&
null != currentCoordinator.Child)
{
currentCoordinator.Child.ResetCollection(_shaper);
}
haveInitializedChildren = true;
// read the next element
currentCoordinator.ReadNextElement(_shaper);
// Z.EntityFramework.Classic: QueryResultFilter
if (currentCoordinator.CurrentWrapper is FilterRemovedEntityWrapper)
{
depth--;
}
else
{
// place the coordinator in the result array to indicate there is a new
// element at this depth
_current[depth] = currentCoordinator;
}
}
else
{
// clear out the coordinator in result array to indicate there is no new
// element at this depth
_current[depth] = null;
}
// move to child (in the next iteration we deal with depth + 1
currentCoordinator = currentCoordinator.Child;
}
// clear out all positions below the depth we reached before we ran out of data
for (; depth < _current.Length; depth++)
{
_current[depth] = null;
}
}
// <summary> // Creates a buffer handling state needed by this coordinator. // </summary> internal abstract Coordinator CreateCoordinator(Coordinator parent, Coordinator next);
protected Coordinator(CoordinatorFactory coordinatorFactory, Coordinator parent, Coordinator next)
{
CoordinatorFactory = coordinatorFactory;
Parent = parent;
Next = next;
}