protected bool HandleValueHolder(DirectValueHolderRef vhr, PrefetchPath[] cachePaths, IMap <ICacheIntern, IISet <IObjRef> > cacheToOrisToLoad,
IMap <ICacheIntern, IMap <IObjRelation, bool> > cacheToOrelsToLoad, IMap <ICacheIntern, IISet <IObjRef> > cacheToOrisLoadedHistory,
IMap <ICacheIntern, IISet <IObjRelation> > cacheToOrelsLoadedHistory, AlreadyHandledSet alreadyHandledSet, IList <PrefetchCommand> cascadeLoadItems)
{
RelationMember member = vhr.Member;
bool newOriToLoad = false;
if (vhr is IndirectValueHolderRef)
{
RootCacheValue rcv = (RootCacheValue)vhr.Vhc;
ICacheIntern rootCache = ((IndirectValueHolderRef)vhr).RootCache;
IEntityMetaData metaData = EntityMetaDataProvider.GetMetaData(rcv.EntityType);
int relationIndex = metaData.GetIndexByRelation(member);
IObjRef[] rcvObjRefs = rcv.GetRelation(relationIndex);
if (rcvObjRefs == null)
{
IObjRelation self = ValueHolderContainerMixin.GetSelf(rcv, member.Name);
ISet <IObjRelation> orelsLoadedHistory = cacheToOrelsLoadedHistory.Get(rootCache);
if (orelsLoadedHistory == null || !orelsLoadedHistory.Contains(self))
{
IMap <IObjRelation, bool> orelsToLoad = cacheToOrelsToLoad.Get(rootCache);
if (orelsToLoad == null)
{
orelsToLoad = new HashMap <IObjRelation, bool>();
cacheToOrelsToLoad.Put(rootCache, orelsToLoad);
}
orelsToLoad.Put(self, vhr.ObjRefsOnly);
AddCascadeLoadItem(vhr, cachePaths, cascadeLoadItems);
}
return(false);
}
else if (!vhr.ObjRefsOnly && rcvObjRefs.Length > 0)
{
ISet <IObjRef> orisLoadedHistory = cacheToOrisLoadedHistory.Get(rootCache);
for (int b = rcvObjRefs.Length; b-- > 0;)
{
IObjRef ori = rcvObjRefs[b];
if (orisLoadedHistory != null && orisLoadedHistory.Contains(ori))
{
// Object has been tried to load before but it is obviously not in the cache
// So the load must have been failed somehow. It is assumed that the entity
// is not persisted in the database anymore (deleted before) so the ORI is illegal.
// We cleanup the ValueHolder so that future calls will not lead to
// another unnecessary roundtrip to the server
rcvObjRefs[b] = null;
continue;
}
IISet <IObjRef> orisToLoad = cacheToOrisToLoad.Get(rootCache);
if (orisToLoad == null)
{
orisToLoad = new CHashSet <IObjRef>();
cacheToOrisToLoad.Put(rootCache, orisToLoad);
}
orisToLoad.Add(ori);
newOriToLoad = true;
}
if (newOriToLoad)
{
AddCascadeLoadItem(vhr, cachePaths, cascadeLoadItems);
}
}
return(false);
}
IValueHolderContainer vhc = (IValueHolderContainer)vhr.Vhc;
int relationIndex2 = vhc.Get__EntityMetaData().GetIndexByRelationName(member.Name);
if (ValueHolderState.INIT == vhc.Get__State(relationIndex2))
{
return(true);
}
ICacheIntern cache = vhc.__TargetCache;
IObjRef[] objRefs = vhc.Get__ObjRefs(relationIndex2);
if (objRefs == null)
{
IObjRelation self = vhc.Get__Self(relationIndex2);
List <IObjRelation> orels = new List <IObjRelation>();
orels.Add(self);
IList <IObjRelationResult> orelResults = cache.GetObjRelations(orels, cache, failEarlyReturnMisses);
IObjRelationResult orelResult = orelResults[0];
if (orelResult == null)
{
ISet <IObjRelation> orelsLoadedHistory = cacheToOrelsLoadedHistory.Get(cache);
if (orelsLoadedHistory == null || !orelsLoadedHistory.Contains(self))
{
IMap <IObjRelation, bool> orelsToLoad = cacheToOrelsToLoad.Get(cache);
if (orelsToLoad == null)
{
orelsToLoad = new HashMap <IObjRelation, bool>();
cacheToOrelsToLoad.Put(cache, orelsToLoad);
}
orelsToLoad.Put(self, vhr.ObjRefsOnly);
AddCascadeLoadItem(vhr, cachePaths, cascadeLoadItems);
}
return(false);
}
objRefs = orelResult.Relations;
if (objRefs != null)
{
vhc.Set__ObjRefs(relationIndex2, objRefs);
}
}
if (!vhr.ObjRefsOnly && objRefs != null && objRefs.Length > 0)
{
IList <Object> loadedObjects = cache.GetObjects(new List <IObjRef>(objRefs), cache, failEarlyReturnMisses);
try
{
for (int b = objRefs.Length; b-- > 0;)
{
IObjRef ori = objRefs[b];
Object loadedObject = loadedObjects[b];
if (loadedObject != null)
{
continue;
}
ISet <IObjRef> orisLoadedHistory = cacheToOrisLoadedHistory.Get(cache);
if (orisLoadedHistory != null && orisLoadedHistory.Contains(ori))
{
// Object has been tried to load before but it is obviously not in the cache
// So the load must have been failed somehow. It is assumed that the entity
// is not persisted in the database anymore (deleted before) so the ORI is illegal.
// We cleanup the ValueHolder so that future calls will not lead to
// another unnecessary roundtrip to the server
objRefs[b] = null;
continue;
}
IISet <IObjRef> orisToLoad = cacheToOrisToLoad.Get(cache);
if (orisToLoad == null)
{
orisToLoad = new CHashSet <IObjRef>();
cacheToOrisToLoad.Put(cache, orisToLoad);
}
orisToLoad.Add(ori);
newOriToLoad = true;
}
}
finally
{
loadedObjects.Clear();
loadedObjects = null;
}
}
if (objRefs == null || newOriToLoad)
{
AddCascadeLoadItem(vhr, cachePaths, cascadeLoadItems);
return(false);
}
return(true);
}
protected void LoadAndAddOrels(ICacheIntern cache, IMap <IObjRelation, bool> orelsToLoad, IList <Object> hardRefList,
IMap <ICacheIntern, IISet <IObjRelation> > cacheToOrelsLoadedHistory, ILinkedMap <ICacheIntern, IISet <IObjRef> > cacheToOrisToLoad,
IdentityLinkedSet <Member> prioMembers)
{
IList <IObjRelation> objRelList;
if (prioMembers.Count > 0)
{
objRelList = new List <IObjRelation>(orelsToLoad.Count);
IEntityMetaDataProvider entityMetaDataProvider = this.EntityMetaDataProvider;
foreach (Entry <IObjRelation, Boolean> entry in orelsToLoad)
{
IObjRelation objRel = entry.Key;
IEntityMetaData metaData = entityMetaDataProvider.GetMetaData(objRel.RealType);
RelationMember memberByName = (RelationMember)metaData.GetMemberByName(objRel.MemberName);
if (!prioMembers.Contains(memberByName))
{
continue;
}
objRelList.Add(objRel);
}
}
else
{
objRelList = orelsToLoad.KeyList();
}
IList <IObjRelationResult> objRelResults = cache.GetObjRelations(objRelList, cache, CacheDirective.ReturnMisses);
IISet <IObjRef> orisToLoad = null;
for (int a = 0, size = objRelResults.Count; a < size; a++)
{
IObjRelation objRel = objRelList[a];
IObjRelationResult objRelResult = objRelResults[a];
bool objRefsOnly = orelsToLoad.Remove(objRel);
if (objRelResult == null)
{
continue;
}
if (orelsToLoad.Get(objRel))
{
// fetch only the objRefs, not the objects themselves
continue;
}
IObjRef[] relations = objRelResult.Relations;
if (relations.Length == 0 || objRefsOnly)
{
// fetch only the objRefs, not the objects themselves
continue;
}
if (orisToLoad == null)
{
orisToLoad = cacheToOrisToLoad.Get(cache);
if (orisToLoad == null)
{
orisToLoad = new CHashSet <IObjRef>();
cacheToOrisToLoad.Put(cache, orisToLoad);
}
}
orisToLoad.AddAll(relations);
}
IISet <IObjRelation> orelsLoadedHistory = cacheToOrelsLoadedHistory.Get(cache);
if (orelsLoadedHistory == null)
{
orelsLoadedHistory = new CHashSet <IObjRelation>();
cacheToOrelsLoadedHistory.Put(cache, orelsLoadedHistory);
}
orelsLoadedHistory.AddAll(objRelList);
}