protected void HandleValueHolderContainer(IValueHolderContainer vhc, RelationMember[] relationMembers, IObjRef[][] relations)
{
ICacheHelper cacheHelper = this.CacheHelper;
ICacheIntern parent = this.Parent;
IProxyHelper proxyHelper = this.ProxyHelper;
for (int relationIndex = relationMembers.Length; relationIndex-- > 0;)
{
RelationMember relationMember = relationMembers[relationIndex];
IObjRef[] relationsOfMember = relations[relationIndex];
if (!CascadeLoadMode.EAGER.Equals(relationMember.CascadeLoadMode))
{
if (ValueHolderState.INIT != vhc.Get__State(relationIndex))
{
// Update ObjRef information within the entity and do nothing else
vhc.Set__ObjRefs(relationIndex, relationsOfMember);
continue;
}
}
// We can safely access to relation if we want to
if (relationsOfMember == null)
{
// Reset value holder state because we do not know the content currently
vhc.Set__Uninitialized(relationIndex, null);
continue;
}
Object relationValue = relationMember.GetValue(vhc);
if (relationsOfMember.Length == 0)
{
if (!relationMember.IsToMany)
{
if (relationValue != null)
{
// Relation has to be flushed
relationMember.SetValue(vhc, null);
}
}
else
{
if (relationValue != null)
{
// Reuse existing collection
ListUtil.ClearList(relationValue);
}
else
{
// We have to create a new empty collection
relationValue = cacheHelper.CreateInstanceOfTargetExpectedType(relationMember.RealType, relationMember.ElementType);
relationMember.SetValue(vhc, relationValue);
}
}
continue;
}
// So we know the new content (which is not empty) and we know that the current content is already initialized
// Now we have to refresh the current content eagerly
// load entities as if we were an "eager valueholder" here
IList <Object> potentialNewItems = parent.GetObjects(new List <IObjRef>(relationsOfMember), this, CacheDirective.None);
if (OverwriteToManyRelations)
{
Object newRelationValue = cacheHelper.ConvertResultListToExpectedType(potentialNewItems, relationMember.RealType,
relationMember.ElementType);
// Set new to-many-relation, even if there has not changed anything in its item content
relationMember.SetValue(vhc, newRelationValue);
continue;
}
IList <Object> relationItems = ListUtil.AnyToList(relationValue);
bool diff = (relationItems.Count != potentialNewItems.Count);
if (!diff)
{
for (int b = potentialNewItems.Count; b-- > 0;)
{
if (!Object.ReferenceEquals(potentialNewItems[b], relationItems[b]))
{
diff = true;
break;
}
}
}
if (!diff)
{
// Nothing to do
continue;
}
if (relationValue != null && relationMember.IsToMany)
{
// Reuse existing collection
ListUtil.ClearAndFillList(relationValue, relationItems);
}
else
{
// We have to create a new empty collection or replace the to-one value
Object newRelationValue = cacheHelper.ConvertResultListToExpectedType(potentialNewItems, relationMember.RealType,
relationMember.ElementType);
relationMember.SetValue(vhc, newRelationValue);
}
}
}
