/// <summary>
/// Given a collection type, determine the Type representing elements
/// within instances of that collection.
/// </summary>
/// <param name="collectionType">The collection type to be checked.</param>
/// <returns>The Type of the elements of the collection.</returns>
private IType GetElementType(CollectionType collectionType)
{
return collectionType.GetElementType(_sfi);
}
/// <summary> Cascade to the collection elements</summary>
private void CascadeCollectionElements(object child, CollectionType collectionType, CascadeStyle style, IType elemType, object anything, bool isCascadeDeleteEnabled)
{
// we can't cascade to non-embedded elements
bool embeddedElements = eventSource.EntityMode != EntityMode.Xml
|| ((EntityType) collectionType.GetElementType(eventSource.Factory)).IsEmbeddedInXML;
bool reallyDoCascade = style.ReallyDoCascade(action) && embeddedElements
&& child != CollectionType.UnfetchedCollection;
if (reallyDoCascade)
{
log.Info("cascade " + action + " for collection: " + collectionType.Role);
foreach (object o in action.GetCascadableChildrenIterator(eventSource, collectionType, child))
CascadeProperty(o, elemType, style, anything, isCascadeDeleteEnabled);
log.Info("done cascade " + action + " for collection: " + 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: " + 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: " + collectionType.Role);
}
}
