/// <summary>
/// Creates all commands needed to perform a bidirectional remove operation from this collection end point.
/// </summary>
/// <remarks>
/// A remove operation of the form "customer.Orders.Remove (RemovedOrder)" needs two steps:
/// <list type="bullet">
/// <item>RemovedOrder.Customer = null and</item>
/// <item>customer.Orders.Remove (removedOrder).</item>
/// </list>
/// </remarks>
public override ExpandedCommand ExpandToAllRelatedObjects()
{
var removedEndPoint = GetOppositeEndPoint(ModifiedEndPoint, OldRelatedObject, _endPointProvider);
return(new ExpandedCommand(
removedEndPoint.CreateRemoveCommand(ModifiedEndPoint.GetDomainObject()),
this));
}
/// <summary>
/// Creates all commands needed to perform a bidirectional 1:n set operation on this <see cref="ObjectEndPoint"/>. One of the steps is
/// this command, the other steps are the opposite commands on the new/old related objects.
/// </summary>
/// <remarks>
/// A 1:n set operation of the form "order.Customer = newCustomer" needs three steps:
/// <list type="bullet">
/// <item>order.Customer = newCustomer,</item>
/// <item>newCustomer.Orders.Add (order), and</item>
/// <item>oldCustomer.Orders.Remove (order).</item>
/// </list>
/// </remarks>
public override ExpandedCommand ExpandToAllRelatedObjects()
{
var newRelatedEndPoint = (ICollectionEndPoint)GetOppositeEndPoint(ModifiedEndPoint, NewRelatedObject, _endPointProvider);
var oldRelatedEndPoint = (ICollectionEndPoint)GetOppositeEndPoint(ModifiedEndPoint, OldRelatedObject, _endPointProvider);
var bidirectionalModification = new ExpandedCommand(
// => order.Customer = newCustomer
this,
// => newCustomer.Orders.Add (order)
newRelatedEndPoint.CreateAddCommand(ModifiedEndPoint.GetDomainObject()),
// => oldCustomer.Orders.Remove (order) (remove)
oldRelatedEndPoint.CreateRemoveCommand(ModifiedEndPoint.GetDomainObject()));
return(bidirectionalModification);
}
/// <summary>
/// Creates all commands needed to perform a bidirectional insert operation into this collection end point.
/// </summary>
/// <remarks>
/// An insert operation of the form "customer.Orders.Insert (insertedOrder, index)" needs three steps:
/// <list type="bullet">
/// <item>insertedOrder.Customer = customer,</item>
/// <item>customer.Orders.Insert (insertedOrder, index), and</item>
/// <item>oldCustomer.Orders.Remove (insertedOrder) - with oldCustomer being the old customer of the inserted order (if non-null).</item>
/// </list>
/// </remarks>
public override ExpandedCommand ExpandToAllRelatedObjects()
{
// the end point that will be linked to the collection end point after the operation
var insertedObjectEndPoint = (IRealObjectEndPoint)GetOppositeEndPoint(ModifiedEndPoint, NewRelatedObject, _endPointProvider);
// the object that was linked to the new related object before the operation
var oldRelatedObjectOfInsertedObject = insertedObjectEndPoint.GetOppositeObject();
// the end point that was linked to the new related object before the operation
var oldRelatedEndPointOfInsertedObject = GetOppositeEndPoint(insertedObjectEndPoint, oldRelatedObjectOfInsertedObject, _endPointProvider);
return(new ExpandedCommand(
// insertedOrder.Customer = customer (previously oldCustomer)
insertedObjectEndPoint.CreateSetCommand(ModifiedEndPoint.GetDomainObject()),
// customer.Orders.Insert (insertedOrder, index)
this,
// oldCustomer.Orders.Remove (insertedOrder)
oldRelatedEndPointOfInsertedObject.CreateRemoveCommand(NewRelatedObject)));
}
/// <summary>
/// Creates all commands needed to perform a bidirectional replace operation within this collection end point.
/// </summary>
/// <remarks>
/// A replace operation of the form "customer.Orders[index] = newOrder" needs four steps:
/// <list type="bullet">
/// <item>customer.Order[index].Customer = null,</item>
/// <item>newOrder.Customer = customer,</item>
/// <item>customer.Orders[index] = newOrder,</item>
/// <item>oldCustomer.Orders.Remove (insertedOrder) - with oldCustomer being the old customer of the new order (if non-null).</item>
/// </list>
/// </remarks>
public override ExpandedCommand ExpandToAllRelatedObjects()
{
// the end point that will be linked to the collection end point after the operation
var endPointOfNewObject = ModifiedEndPoint.GetEndPointWithOppositeDefinition <IRealObjectEndPoint> (NewRelatedObject);
// the end point that was linked to the collection end point before the operation
var endPointOfOldObject = ModifiedEndPoint.GetEndPointWithOppositeDefinition <IRealObjectEndPoint> (OldRelatedObject);
// the object that was linked to the new related object before the operation
var oldRelatedObjectOfNewObject = endPointOfNewObject.GetOppositeObject();
// the end point that was linked to the new related object before the operation
var oldRelatedEndPointOfNewObject = endPointOfNewObject.GetEndPointWithOppositeDefinition <ICollectionEndPoint> (oldRelatedObjectOfNewObject);
return(new ExpandedCommand(
// customer.Order[index].Customer = null
endPointOfOldObject.CreateRemoveCommand(ModifiedEndPoint.GetDomainObject()),
// newOrder.Customer = customer
endPointOfNewObject.CreateSetCommand(ModifiedEndPoint.GetDomainObject()),
// customer.Orders[index] = newOrder
this,
// oldCustomer.Orders.Remove (insertedOrder)
oldRelatedEndPointOfNewObject.CreateRemoveCommand(NewRelatedObject)));
}
