public void Handle(IList <IObjectFuture> objectFutures)
{
List <IEnumerable> allToPrefetch = new List <IEnumerable>(objectFutures.Count);
for (int i = 0, size = objectFutures.Count; i < size; i++)
{
IObjectFuture objectFuture = objectFutures[i];
if (!(objectFuture is PrefetchFuture))
{
throw new ArgumentException("'" + GetType().Name + "' cannot handle " + typeof(IObjectFuture).Name
+ " implementations of type '" + objectFuture.GetType().Name + "'");
}
PrefetchFuture prefetchFuture = (PrefetchFuture)objectFuture;
IEnumerable toPrefetch = prefetchFuture.ToPrefetch;
allToPrefetch.Add(toPrefetch);
}
PrefetchHelper.Prefetch(allToPrefetch);
}
protected void ApplyRelationUpdateItems(IObjRefContainer entity, IRelationUpdateItem[] ruis, bool isUpdate, IEntityMetaData metadata, IReader reader)
{
List <Object> toPrefetch = new List <Object>();
RelationMember[] relationMembers = metadata.RelationMembers;
foreach (IRelationUpdateItem rui in ruis)
{
String memberName = rui.MemberName;
int relationIndex = metadata.GetIndexByRelationName(memberName);
if (ValueHolderState.INIT == entity.Get__State(relationIndex))
{
throw new Exception("ValueHolder already initialized for property '" + memberName + "'");
}
IObjRef[] existingORIs = entity.Get__ObjRefs(relationIndex);
IObjRef[] addedORIs = rui.AddedORIs;
IObjRef[] removedORIs = rui.RemovedORIs;
IObjRef[] newORIs;
if (existingORIs.Length == 0)
{
if (removedORIs != null && addedORIs.Length > 0)
{
throw new ArgumentException("Removing from empty member");
}
newORIs = addedORIs != null && addedORIs.Length > 0 ? addedORIs : ObjRef.EMPTY_ARRAY;
}
else
{
// Set to efficiently remove entries
LinkedHashSet <IObjRef> existingORIsSet = new LinkedHashSet <IObjRef>(existingORIs);
if (removedORIs != null && removedORIs.Length > 0)
{
foreach (IObjRef removedORI in removedORIs)
{
if (!existingORIsSet.Remove(removedORI))
{
throw OptimisticLockUtil.ThrowModified(OriHelper.EntityToObjRef(entity), null, entity);
}
}
}
if (addedORIs != null && addedORIs.Length > 0)
{
foreach (IObjRef addedORI in addedORIs)
{
if (!existingORIsSet.Add(addedORI))
{
throw OptimisticLockUtil.ThrowModified(OriHelper.EntityToObjRef(entity), null, entity);
}
}
}
if (existingORIsSet.Count == 0)
{
newORIs = ObjRef.EMPTY_ARRAY;
}
else
{
newORIs = existingORIsSet.ToArray();
}
}
RelationMember member = relationMembers[relationIndex];
if (isUpdate)
{
entity.Set__ObjRefs(relationIndex, newORIs);
if (!entity.Is__Initialized(relationIndex))
{
DirectValueHolderRef dvhr = new DirectValueHolderRef(entity, member);
toPrefetch.Add(dvhr);
}
}
else
{
BuildSetterCommands(entity, newORIs, member, reader);
}
}
if (toPrefetch.Count > 0)
{
IObjectFuture objectFuture = new PrefetchFuture(toPrefetch);
IObjectCommand command = CommandBuilder.Build(reader.CommandTypeRegistry, objectFuture, null);
reader.AddObjectCommand(command);
}
}
