/// <summary> Cascade to the collection elements</summary>
private void CascadeCollectionElements(object parent, object child, CollectionType collectionType, CascadeStyle style, IType elemType, object anything, bool isCascadeDeleteEnabled)
{
bool reallyDoCascade = style.ReallyDoCascade(action) &&
child != CollectionType.UnfetchedCollection;
if (reallyDoCascade)
{
log.Info("cascade {0} for collection: {1}", action, collectionType.Role);
foreach (object o in action.GetCascadableChildrenIterator(eventSource, collectionType, child))
{
CascadeProperty(parent, o, elemType, style, null, anything, isCascadeDeleteEnabled);
}
log.Info("done cascade {0} for collection: {1}", action, collectionType.Role);
}
var childAsPersColl = child as IPersistentCollection;
bool deleteOrphans = style.HasOrphanDelete && action.DeleteOrphans && elemType.IsEntityType &&
childAsPersColl != null; //a newly instantiated collection can't have orphans
if (deleteOrphans)
{
// handle orphaned entities!!
log.Info("deleting orphans for collection: {0}", collectionType.Role);
// we can do the cast since orphan-delete does not apply to:
// 1. newly instantiated collections
// 2. arrays (we can't track orphans for detached arrays)
string entityName = collectionType.GetAssociatedEntityName(eventSource.Factory);
DeleteOrphans(entityName, childAsPersColl);
log.Info("done deleting orphans for collection: {0}", collectionType.Role);
}
}
