protected void AddCascadeLoadItem(DirectValueHolderRef vhr, PrefetchPath[] cachePaths, IList <PrefetchCommand> cascadeLoadItems)
{
if (cachePaths != null || !vhr.ObjRefsOnly)
{
PrefetchCommand cascadeLoadItem = new PrefetchCommand(vhr, cachePaths);
cascadeLoadItems.Add(cascadeLoadItem);
}
}
public override bool Equals(Object obj)
{
if (obj == this)
{
return(true);
}
if (!(obj is DirectValueHolderRef))
{
return(false);
}
DirectValueHolderRef other = (DirectValueHolderRef)obj;
return(Object.ReferenceEquals(Vhc, other.Vhc) && Object.ReferenceEquals(Member, other.Member));
}
public PrefetchCommand(DirectValueHolderRef valueHolder, PrefetchPath[] prefetchPaths)
{
this.valueHolder = valueHolder;
this.prefetchPaths = prefetchPaths;
}
public IdentityLinkedSet <Member> GetPrioMembers(ILinkedMap <Type, PrefetchPath[]> entityTypeToPrefetchPath,
List <PrefetchCommand> pendingPrefetchCommands, MergePrefetchPathsCache mergePrefetchPathsCache)
{
IdentityLinkedSet <Member> key1 = new IdentityLinkedSet <Member>();
PrioMembersKey key = new PrioMembersKey(entityTypeToPrefetchPath, key1);
for (int a = 0, size = pendingPrefetchCommands.Count; a < size; a++)
{
PrefetchCommand prefetchCommand = pendingPrefetchCommands[a];
key1.Add(prefetchCommand.valueHolder.Member);
}
IdentityLinkedSet <Member> prioMembersMap = activeMembersToPrioMembersMap.Get(key);
if (prioMembersMap != null)
{
return(prioMembersMap);
}
prioMembersMap = new IdentityLinkedSet <Member>(0.5f);
Tuple2KeyHashMap <Type, PrefetchPath[], bool?> alreadyVisited = null;
IdentityHashSet <Type> touchedTypesInPriority = null;
if (mergePrefetchPathsCache == null)
{
mergePrefetchPathsCache = new MergePrefetchPathsCache(entityMetaDataProvider);
}
bool prio2Mode = true;
foreach (PrefetchCommand prefetchCommand in pendingPrefetchCommands)
{
DirectValueHolderRef valueHolder = prefetchCommand.valueHolder;
PrefetchPath[] prefetchPaths = prefetchCommand.prefetchPaths;
RelationMember member = valueHolder.Member;
Type targetEntityType = member.ElementType;
// Merge the root prefetch path with the relative prefetch path
prefetchPaths = mergePrefetchPathsCache.MergePrefetchPaths(targetEntityType, prefetchPaths, entityTypeToPrefetchPath);
IEntityMetaData metaData = valueHolder.Vhc.Get__EntityMetaData();
if (targetEntityType.Equals(metaData.EntityType))
{
// prio1 overrides prio2
if (prio2Mode)
{
prio2Mode = false;
alreadyVisited = null;
prioMembersMap.Clear();
if (touchedTypesInPriority != null)
{
touchedTypesInPriority.Clear();
}
}
prioMembersMap.Add(member);
if (touchedTypesInPriority == null)
{
touchedTypesInPriority = new IdentityHashSet <Type>();
}
touchedTypesInPriority.Add(member.EntityType);
touchedTypesInPriority.Add(targetEntityType);
continue;
}
if (prefetchPaths == null || !prio2Mode)
{
continue;
}
if (alreadyVisited == null)
{
alreadyVisited = new Tuple2KeyHashMap <Type, PrefetchPath[], bool?>();
}
if (IsPrio2Member(metaData, entityMetaDataProvider.GetMetaData(targetEntityType), prefetchPaths, entityTypeToPrefetchPath, alreadyVisited,
mergePrefetchPathsCache))
{
prioMembersMap.Add(member);
if (touchedTypesInPriority == null)
{
touchedTypesInPriority = new IdentityHashSet <Type>();
}
touchedTypesInPriority.Add(member.EntityType);
touchedTypesInPriority.Add(targetEntityType);
}
}
if (prioMembersMap.Count > 0)
{
// check for out-of-order members which have nothing to do (and will never ever have in a transitive manner) with the priorized members
foreach (PrefetchCommand prefetchCommand in pendingPrefetchCommands)
{
DirectValueHolderRef valueHolder = prefetchCommand.valueHolder;
RelationMember member = valueHolder.Member;
if (prioMembersMap.Contains(member))
{
// already priorized
continue;
}
if (touchedTypesInPriority.Contains(member.EntityType) || touchedTypesInPriority.Contains(member.ElementType))
{
continue;
}
prioMembersMap.Add(member);
}
}
Object writeLock = activeMembersToPrioMembersMap.GetWriteLock();
lock (writeLock)
{
IdentityLinkedSet <Member> existingPrioMembersMap = activeMembersToPrioMembersMap.Get(key);
if (existingPrioMembersMap != null)
{
return(existingPrioMembersMap);
}
activeMembersToPrioMembersMap.Put(key, prioMembersMap);
return(prioMembersMap);
}
}
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 EnsureInitializedRelationsIntern3(Object obj, PrefetchPath[] cachePaths, ILinkedMap <Type, PrefetchPath[]> entityTypeToPrefetchPaths,
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)
{
if (obj == null)
{
return;
}
if (!alreadyHandledSet.PutIfNotExists(obj, cachePaths, true))
{
return;
}
if (obj is IndirectValueHolderRef)
{
IndirectValueHolderRef vhk = (IndirectValueHolderRef)obj;
HandleValueHolder(vhk, cachePaths, cacheToOrisToLoad, cacheToOrelsToLoad, cacheToOrisLoadedHistory, cacheToOrelsLoadedHistory,
alreadyHandledSet, cascadeLoadItems);
// Do nothing because this is only to prefetch RootCache entries
return;
}
else if (obj is DirectValueHolderRef)
{
DirectValueHolderRef vhk = (DirectValueHolderRef)obj;
if (!HandleValueHolder(vhk, cachePaths, cacheToOrisToLoad, cacheToOrelsToLoad, cacheToOrisLoadedHistory, cacheToOrelsLoadedHistory,
alreadyHandledSet, cascadeLoadItems))
{
return;
}
// force valueholder init. at this point we know that all related items are already in the cache. there will be no roundtrip
// to the server
if (vhk.Member == null)
{
obj = vhk.Vhc;
}
else
{
obj = vhk.Member.GetValue(vhk.Vhc);
}
}
if (obj == null)
{
// this check is necessary because even if we create only instances of DirectValueHolderRef in cases where there is a not initalized relation
// even then it might be possible that a concurrent thread initializes the valueholder to null (e.g. an empty to-one relation)
return;
}
if ((cachePaths == null || cachePaths.Length == 0) && entityTypeToPrefetchPaths == null)
{
return;
}
if (obj is IEnumerable)
{
var items = new List <Object>();
foreach (Object item in (IEnumerable)obj)
{
if (item == null)
{
continue;
}
items.Add(item);
}
foreach (Object item in items)
{
EnsureInitializedRelationsIntern3(item, cachePaths, entityTypeToPrefetchPaths, cacheToOrisToLoad, cacheToOrelsToLoad,
cacheToOrisLoadedHistory, cacheToOrelsLoadedHistory, alreadyHandledSet, cascadeLoadItems);
}
return;
}
IEntityMetaData metaData = ((IEntityMetaDataHolder)obj).Get__EntityMetaData();
if (cachePaths == null || cachePaths.Length == 0)
{
if (entityTypeToPrefetchPaths != null)
{
cachePaths = entityTypeToPrefetchPaths.Get(metaData.EntityType);
}
if (cachePaths == null || cachePaths.Length == 0)
{
return;
}
}
RelationMember[] relationMembers = metaData.RelationMembers;
if (relationMembers.Length == 0)
{
return;
}
IValueHolderContainer vhc = (IValueHolderContainer)obj;
for (int a = cachePaths.Length; a-- > 0;)
{
PrefetchPath path = cachePaths[a];
int relationIndex = path.memberIndex;
RelationMember member = relationMembers[relationIndex];
if (ValueHolderState.INIT != vhc.Get__State(relationIndex))
{
DirectValueHolderRef vhk = new DirectValueHolderRef(vhc, member);
EnsureInitializedRelationsIntern3(vhk, path.children, entityTypeToPrefetchPaths, cacheToOrisToLoad, cacheToOrelsToLoad, cacheToOrisLoadedHistory,
cacheToOrelsLoadedHistory, alreadyHandledSet, cascadeLoadItems);
continue;
}
Object memberValue = member.GetValue(obj);
if (memberValue == null)
{
continue;
}
EnsureInitializedRelationsIntern3(memberValue, path.children, entityTypeToPrefetchPaths, cacheToOrisToLoad, cacheToOrelsToLoad,
cacheToOrisLoadedHistory, cacheToOrelsLoadedHistory, alreadyHandledSet, cascadeLoadItems);
}
}
protected void ProcessPendingOrelsAndObjRefs(ILinkedMap <Type, PrefetchPath[]> entityTypeToPrefetchPath,
AlreadyHandledSet alreadyHandledSet, IdentityLinkedMap <ICacheIntern, IISet <IObjRef> > cacheToOrisLoadedHistory,
IdentityLinkedMap <ICacheIntern, IISet <IObjRelation> > cacheToOrelsLoadedHistory, IdentityLinkedMap <ICacheIntern, IISet <IObjRef> > cacheToOrisToLoad,
IdentityLinkedMap <ICacheIntern, IMap <IObjRelation, bool> > cacheToOrelsToLoad, List <PrefetchCommand> pendingPrefetchCommands,
List <Object> hardRefList)
{
// all relation members where at least one instance of the owning entity type needs a prefetch on this member in the immediate next step
MergePrefetchPathsCache mergePrefetchPathsCache = new MergePrefetchPathsCache(EntityMetaDataProvider);
IdentityLinkedSet <Member> prioMembers = PrioMembersProvider.GetPrioMembers(entityTypeToPrefetchPath, pendingPrefetchCommands, mergePrefetchPathsCache);
LoadAndAddOrels(cacheToOrelsToLoad, hardRefList, cacheToOrelsLoadedHistory, cacheToOrisToLoad, prioMembers);
LoadAndAddOris(cacheToOrisToLoad, hardRefList, cacheToOrisLoadedHistory);
while (pendingPrefetchCommands.Count > 0)
{
PrefetchCommand[] currentPrefetchCommands = pendingPrefetchCommands.ToArray();
// Clear the items to be ready for cascaded items in new batch recursion step
pendingPrefetchCommands.Clear();
if (prioMembers.Count > 0)
{
for (int a = 0, size = currentPrefetchCommands.Length; a < size; a++)
{
PrefetchCommand prefetchCommand = currentPrefetchCommands[a];
DirectValueHolderRef valueHolder = prefetchCommand.valueHolder;
if (!prioMembers.Contains(valueHolder.Member))
{
currentPrefetchCommands[a] = null;
pendingPrefetchCommands.Add(prefetchCommand);
}
}
}
GuiThreadHelper.InvokeInGuiAndWait(delegate()
{
ICacheModification cacheModification = CacheModification;
ValueHolderContainerMixin valueHolderContainerMixin = ValueHolderContainerMixin;
bool oldActive = cacheModification.Active;
if (!oldActive)
{
cacheModification.Active = true;
}
try
{
foreach (PrefetchCommand prefetchCommand in currentPrefetchCommands)
{
if (prefetchCommand == null)
{
continue;
}
DirectValueHolderRef valueHolder = prefetchCommand.valueHolder;
PrefetchPath[] cachePaths = prefetchCommand.prefetchPaths;
RelationMember member = valueHolder.Member;
// Merge the root prefetch path with the relative prefetch path
cachePaths = mergePrefetchPathsCache.MergePrefetchPaths(member.ElementType, cachePaths, entityTypeToPrefetchPath);
IObjRefContainer vhc = valueHolder.Vhc;
ICacheIntern targetCache;
bool doSetValue = false;
if (valueHolder is IndirectValueHolderRef)
{
IndirectValueHolderRef valueHolderKey = (IndirectValueHolderRef)valueHolder;
targetCache = valueHolderKey.RootCache;
}
else
{
targetCache = ((IValueHolderContainer)vhc).__TargetCache;
doSetValue = true;
}
int relationIndex = vhc.Get__EntityMetaData().GetIndexByRelation(member);
IObjRef[] objRefs = vhc.Get__ObjRefs(relationIndex);
Object obj = valueHolderContainerMixin.GetValue(vhc, relationIndex, member, targetCache, objRefs, CacheDirective.FailEarly);
if (doSetValue && obj != null)
{
member.SetValue(vhc, obj);
}
EnsureInitializedRelationsIntern3(obj, cachePaths, entityTypeToPrefetchPath, cacheToOrisToLoad, cacheToOrelsToLoad, cacheToOrisLoadedHistory,
cacheToOrelsLoadedHistory, alreadyHandledSet, pendingPrefetchCommands);
}
}
finally
{
if (!oldActive)
{
cacheModification.Active = false;
}
}
});
// Remove all oris which have already been tried to load before
if (cacheToOrisToLoad.Count == 0 && cacheToOrelsToLoad.Count == 0 && pendingPrefetchCommands.Count == 0)
{
return;
}
prioMembers = PrioMembersProvider.GetPrioMembers(entityTypeToPrefetchPath, pendingPrefetchCommands, mergePrefetchPathsCache);
LoadAndAddOrels(cacheToOrelsToLoad, hardRefList, cacheToOrelsLoadedHistory, cacheToOrisToLoad, prioMembers);
LoadAndAddOris(cacheToOrisToLoad, hardRefList, cacheToOrisLoadedHistory);
}
}
