protected IdentityHashSet <Object> BuildCollisionSet(CacheDependencyNode node)
{
IdentityHashSet <Object> collisionSet = new IdentityHashSet <Object>();
BuildCollisionSetIntern(node, collisionSet);
return(collisionSet);
}
protected CacheDependencyNode BuildCacheDependency()
{
IRootCache privilegedSecondLevelCache = SecondLevelCacheManager.SelectPrivilegedSecondLevelCache(true);
IRootCache nonPrivilegedSecondLevelCache = SecondLevelCacheManager.SelectNonPrivilegedSecondLevelCache(false);
IList <IWritableCache> selectedFirstLevelCaches = FirstLevelCacheManager.SelectFirstLevelCaches();
IdentityHashMap <IRootCache, CacheDependencyNode> secondLevelCacheToNodeMap = new IdentityHashMap <IRootCache, CacheDependencyNode>();
if (privilegedSecondLevelCache != null)
{
CacheDependencyNodeFactory.AddRootCache(privilegedSecondLevelCache.CurrentRootCache, secondLevelCacheToNodeMap);
}
if (nonPrivilegedSecondLevelCache != null)
{
CacheDependencyNodeFactory.AddRootCache(nonPrivilegedSecondLevelCache.CurrentRootCache, secondLevelCacheToNodeMap);
}
for (int a = selectedFirstLevelCaches.Count; a-- > 0;)
{
ChildCache childCache = (ChildCache)selectedFirstLevelCaches[a];
IRootCache parent = ((IRootCache)childCache.Parent).CurrentRootCache;
CacheDependencyNode node = CacheDependencyNodeFactory.AddRootCache(parent, secondLevelCacheToNodeMap);
node.directChildCaches.Add(childCache);
}
return(CacheDependencyNodeFactory.BuildRootNode(secondLevelCacheToNodeMap));
}
public static CacheDependencyNode AddRootCache(IRootCache rootCache, IdentityHashMap <IRootCache, CacheDependencyNode> rootCacheToNodeMap)
{
rootCache = rootCache.CurrentRootCache;
CacheDependencyNode node = rootCacheToNodeMap.Get(rootCache);
if (node != null)
{
return(node);
}
CacheDependencyNode parentNode = null;
IRootCache parent = ((RootCache)rootCache).Parent;
if (parent != null)
{
parentNode = AddRootCache(parent, rootCacheToNodeMap);
}
node = new CacheDependencyNode(rootCache);
node.parentNode = parentNode;
if (parentNode != null)
{
parentNode.childNodes.Add(node);
}
rootCacheToNodeMap.Put(rootCache, node);
return(node);
}
protected void ChangeFirstLevelCaches(CacheDependencyNode node, ISet <IObjRef> intermediateDeletes)
{
List <IDataChangeEntry> deletes = new List <IDataChangeEntry>();
ICacheModification cacheModification = this.CacheModification;
bool oldCacheModificationValue = cacheModification.Active;
if (!oldCacheModificationValue)
{
cacheModification.Active = true;
}
try
{
ChangeFirstLevelCachesIntern(node, intermediateDeletes);
}
finally
{
if (!oldCacheModificationValue)
{
cacheModification.Active = oldCacheModificationValue;
}
}
if (deletes.Count > 0)
{
IDataChange dce = DataChangeEvent.Create(0, 0, deletes.Count);
ListUtil.AddAll(dce.Deletes, dce.Deletes.Count, deletes);
GuiThreadHelper.InvokeOutOfGui(delegate()
{
EventDispatcher.DispatchEvent(dce);
});
}
}
public void AggregateAllCascadedObjRefs()
{
for (int a = childNodes.Count; a-- > 0;)
{
CacheDependencyNode childNode = childNodes[a];
childNode.AggregateAllCascadedObjRefs();
hardRefObjRefsToLoad.AddAll(childNode.hardRefObjRefsToLoad);
objRefsToLoad.AddAll(childNode.objRefsToLoad);
}
}
protected void BuildCollisionSetIntern(CacheDependencyNode node, IdentityHashSet <Object> collisionSet)
{
collisionSet.Add(node.rootCache);
List <CacheDependencyNode> childNodes = node.childNodes;
for (int a = childNodes.Count; a-- > 0;)
{
BuildCollisionSetIntern(childNodes[a], collisionSet);
}
collisionSet.AddAll(node.directChildCaches);
}
protected void CheckCascadeRefreshNeeded(CacheDependencyNode node)
{
CacheChangeItem[] cacheChangeItems = node.cacheChangeItems;
if (cacheChangeItems == null)
{
return;
}
HashMap <IObjRef, CacheValueAndPrivilege> objRefToCacheValueMap = node.objRefToCacheValueMap;
for (int c = cacheChangeItems.Length; c-- > 0;)
{
CacheChangeItem cci = cacheChangeItems[c];
if (cci == null)
{
continue;
}
IList <IObjRef> objectRefsToUpdate = cci.UpdatedObjRefs;
IList <Object> objectsToUpdate = cci.UpdatedObjects;
for (int a = objectRefsToUpdate.Count; a-- > 0;)
{
IObjRef objRefToUpdate = objectRefsToUpdate[a];
Object objectToUpdate = objectsToUpdate[a];
CacheValueAndPrivilege cacheValueAndPrivilege = objRefToCacheValueMap.Get(objRefToUpdate);
if (cacheValueAndPrivilege == null)
{
// Current value in childCache is not in our interest here
continue;
}
IEntityMetaData metaData = ((IEntityMetaDataHolder)objectToUpdate).Get__EntityMetaData();
RelationMember[] relationMembers = metaData.RelationMembers;
if (relationMembers.Length == 0)
{
continue;
}
RootCacheValue cacheValue = cacheValueAndPrivilege.cacheValue;
IObjRefContainer vhc = (IObjRefContainer)objectToUpdate;
for (int relationIndex = relationMembers.Length; relationIndex-- > 0;)
{
if (ValueHolderState.INIT != vhc.Get__State(relationIndex))
{
continue;
}
// the object which has to be updated has initialized relations. So we have to ensure
// that these relations are in the RootCache at the time the target object will be updated.
// This is because initialized relations have to remain initialized after update but the relations
// may have been updated, too
BatchPendingRelations(cacheValue, relationMembers[relationIndex], cacheValue.GetRelation(relationIndex), node);
}
}
}
}
protected void CleanupSecondLevelCaches(CacheDependencyNode node, IList <IObjRef> deletesList, IList <IDataChangeEntry> updates,
CHashSet <Type> occuringTypes)
{
List <IObjRef> objRefsRemovePriorVersions = new List <IObjRef>(updates.Count);
for (int a = updates.Count; a-- > 0;)
{
IDataChangeEntry updateEntry = updates[a];
Type entityType = updateEntry.EntityType;
occuringTypes.Add(entityType);
objRefsRemovePriorVersions.Add(new ObjRef(entityType, updateEntry.IdNameIndex, updateEntry.Id, updateEntry.Version));
}
CleanupSecondLevelCachesIntern(node, deletesList, objRefsRemovePriorVersions);
}
protected void RemoveNotFoundObjRefs(IObjRef[] objRefsToRemove)
{
hardRefObjRefsToLoad.RemoveAll(objRefsToRemove);
objRefsToLoad.RemoveAll(objRefsToRemove);
for (int a = childNodes.Count; a-- > 0;)
{
CacheDependencyNode childNode = childNodes[a];
childNode.RemoveNotFoundObjRefs(objRefsToRemove);
// Hold cache values as hard ref to prohibit cache loss due to GC
IList <IObjRef> hardRefRequest = childNode.hardRefObjRefsToLoad.ToList();
childNode.privilegedHardRefResult = childNode.rootCache.GetObjects(hardRefRequest, failInCacheHierarchyAndCacheValueResult);
}
}
public static CacheDependencyNode BuildRootNode(IdentityHashMap <IRootCache, CacheDependencyNode> secondLevelCacheToNodeMap)
{
CacheDependencyNode rootNode = null;
foreach (Entry <IRootCache, CacheDependencyNode> entry in secondLevelCacheToNodeMap)
{
CacheDependencyNode node = entry.Value;
if (node.parentNode == null)
{
if (rootNode != null)
{
throw new Exception("Must never happen");
}
rootNode = node;
}
}
return(rootNode);
}
protected void DataChanged(IDataChange dataChange, Object eventTarget, IList <Object> pausedEventTargets, DateTime dispatchTime, long sequenceId)
{
CacheDependencyNode rootNode = BuildCacheDependency();
if (pausedEventTargets != null && pausedEventTargets.Count > 0)
{
IdentityHashSet <Object> collisionSet = BuildCollisionSet(rootNode);
if (collisionSet.ContainsAny(pausedEventTargets))
{
// Without the current rootcache we can not handle the event now. We have to block till the rootCache and all childCaches get valid
EventDispatcher.WaitEventToResume(collisionSet, -1, delegate(IProcessResumeItem processResumeItem)
{
DataChangedIntern(dataChange, pausedEventTargets, processResumeItem, rootNode);
}, null);
return;
}
}
DataChangedIntern(dataChange, pausedEventTargets, null, rootNode);
}
protected void CleanupSecondLevelCachesIntern(CacheDependencyNode node, IList <IObjRef> deletesList, IList <IObjRef> objRefsRemovePriorVersions)
{
IRootCache rootCache = node.rootCache;
Lock writeLock = rootCache.WriteLock;
writeLock.Lock();
try
{
rootCache.Remove(deletesList);
rootCache.RemovePriorVersions(objRefsRemovePriorVersions);
}
finally
{
writeLock.Unlock();
}
List <CacheDependencyNode> childNodes = node.childNodes;
for (int a = childNodes.Count; a-- > 0;)
{
CleanupSecondLevelCachesIntern(childNodes[a], deletesList, objRefsRemovePriorVersions);
}
}
protected void BuildCacheChangeItems(CacheDependencyNode rootNode, IDataChange dataChange)
{
List <IDataChangeEntry> insertsAndUpdates = new List <IDataChangeEntry>();
IList <IDataChangeEntry> deletes = dataChange.Deletes;
insertsAndUpdates.AddRange(dataChange.Updates);
insertsAndUpdates.AddRange(dataChange.Inserts);
List <IObjRef> changesToSearchInCache = new List <IObjRef>(insertsAndUpdates.Count);
List <IObjRef> changesWithVersion = new List <IObjRef>(insertsAndUpdates.Count);
List <IObjRef> deletesToSearchInCache = new List <IObjRef>(deletes.Count);
for (int a = deletes.Count; a-- > 0;)
{
IDataChangeEntry deleteEntry = deletes[a];
Object id = deleteEntry.Id;
if (id == null)
{
deletesToSearchInCache.Add(null);
continue;
}
deletesToSearchInCache.Add(new ObjRef(deleteEntry.EntityType, deleteEntry.IdNameIndex, id, null));
}
for (int a = insertsAndUpdates.Count; a-- > 0;)
{
IDataChangeEntry updateEntry = insertsAndUpdates[a];
Object id = updateEntry.Id;
if (id == null)
{
changesToSearchInCache.Add(null);
continue;
}
changesToSearchInCache.Add(new ObjRef(updateEntry.EntityType, updateEntry.IdNameIndex, id, null));
changesWithVersion.Add(new ObjRef(updateEntry.EntityType, updateEntry.IdNameIndex, id, updateEntry.Version));
}
BuildCacheChangeItems(rootNode, deletesToSearchInCache, changesToSearchInCache, changesWithVersion);
}
protected void ChangeFirstLevelCachesIntern(CacheDependencyNode node, ISet <IObjRef> intermediateDeletes)
{
List <CacheDependencyNode> childNodes = node.childNodes;
for (int a = childNodes.Count; a-- > 0;)
{
ChangeFirstLevelCachesIntern(childNodes[a], intermediateDeletes);
}
CacheChangeItem[] cacheChangeItems = node.cacheChangeItems;
if (cacheChangeItems == null)
{
return;
}
IRootCache parentCache = node.rootCache;
// RootCache readlock must be acquired before individual writelock to the child caches due to deadlock reasons
Lock parentCacheReadLock = parentCache.ReadLock;
parentCacheReadLock.Lock();
try
{
HashMap <IObjRef, CacheValueAndPrivilege> objRefToCacheValueMap = node.objRefToCacheValueMap;
for (int a = cacheChangeItems.Length; a-- > 0;)
{
CacheChangeItem cci = cacheChangeItems[a];
if (cci == null)
{
continue;
}
ChildCache childCache = node.directChildCaches[a];
IList <IObjRef> deletedObjRefs = cci.DeletedObjRefs;
IList <Object> objectsToUpdate = cci.UpdatedObjects;
IList <IObjRef> objRefsToUpdate = cci.UpdatedObjRefs;
IRootCache parent = ((IRootCache)childCache.Parent).CurrentRootCache;
Lock writeLock = childCache.WriteLock;
writeLock.Lock();
try
{
if (deletedObjRefs != null && deletedObjRefs.Count > 0)
{
childCache.Remove(deletedObjRefs);
}
foreach (IObjRef intermediateDeleteObjRef in intermediateDeletes)
{
childCache.Remove(intermediateDeleteObjRef);
}
if (objectsToUpdate != null && objectsToUpdate.Count > 0)
{
List <IObjRef> objRefsToForget = null;
for (int b = objectsToUpdate.Count; b-- > 0;)
{
Object objectInCache = objectsToUpdate[b];
IObjRef objRefInCache = objRefsToUpdate[b];
// Check if the objects still have their id. They may have lost them concurrently because this
// method here may be called from another thread (e.g. UI thread)
IEntityMetaData metaData = ((IEntityMetaDataHolder)objectInCache).Get__EntityMetaData();
Object id = metaData.IdMember.GetValue(objectInCache, false);
if (id == null)
{
continue;
}
CacheValueAndPrivilege cacheValueP = objRefToCacheValueMap.Get(objRefInCache);
if (cacheValueP == null)
{
if (objRefsToForget == null)
{
objRefsToForget = new List <IObjRef>();
}
objRefsToForget.Add(objRefInCache);
foreach (PrimitiveMember member in metaData.PrimitiveMembers)
{
member.SetValue(objectInCache, null);
}
RelationMember[] relationMembers = metaData.RelationMembers;
for (int relationIndex = relationMembers.Length; relationIndex-- > 0;)
{
((IValueHolderContainer)objectInCache).Set__Uninitialized(relationIndex, null);
}
continue;
}
if (!parentCache.ApplyValues(objectInCache, childCache, cacheValueP.privilege))
{
if (Log.WarnEnabled)
{
Log.Warn("No entry for object '" + objectInCache + "' found in second level cache");
}
}
}
if (objRefsToForget != null)
{
childCache.Remove(objRefsToForget);
}
}
}
finally
{
writeLock.Unlock();
}
}
}
finally
{
parentCacheReadLock.Unlock();
}
}
protected void BatchPendingRelations(RootCacheValue cacheValue, RelationMember member, IObjRef[] relationsOfMember, CacheDependencyNode node)
{
if (relationsOfMember == null)
{
IObjRelation objRelation = ValueHolderContainerMixin.GetSelf(cacheValue, member.Name);
node.cascadeRefreshObjRelationsSet.Add(objRelation);
IObjRef[] objRefs = objRelation.ObjRefs;
for (int a = objRefs.Length; a-- > 0;)
{
objRefs[a].Version = null;
}
((ObjRelation)objRelation).Version = null;
}
else
{
node.cascadeRefreshObjRefsSet.AddAll(relationsOfMember);
}
}
protected void BuildCacheChangeItems(CacheDependencyNode node, List <IObjRef> deletesToSearchInCache, List <IObjRef> changesToSearchInCache,
List <IObjRef> changesWithVersion)
{
List <ChildCache> directChildCaches = node.directChildCaches;
for (int flcIndex = directChildCaches.Count; flcIndex-- > 0;)
{
ChildCache childCache = directChildCaches[flcIndex];
List <IObjRef> objectRefsToDelete = new List <IObjRef>();
List <IObjRef> objectRefsToUpdate = new List <IObjRef>();
List <Object> objectsToUpdate = new List <Object>();
Lock readLock = childCache.ReadLock;
readLock.Lock();
try
{
IList <Object> deletesInCache = childCache.GetObjects(deletesToSearchInCache, CacheDirective.FailEarly | CacheDirective.ReturnMisses);
for (int a = deletesToSearchInCache.Count; a-- > 0;)
{
Object result = deletesInCache[a];
if (result == null)
{
// not in this cache
continue;
}
objectRefsToDelete.Add(deletesToSearchInCache[a]);
}
IList <Object> changesInCache = childCache.GetObjects(changesToSearchInCache, CacheDirective.FailEarly | CacheDirective.ReturnMisses);
for (int a = changesToSearchInCache.Count; a-- > 0;)
{
Object result = changesInCache[a];
if (result == null)
{
// not in this cache
continue;
}
// Attach version to ORI. We can not do this before because then we would have had a
// cache miss in the childCache above. We need the version now because our second level cache
// has to refresh its entries
IObjRef objRefWithVersion = changesWithVersion[a];
node.hardRefObjRefsToLoad.Add(objRefWithVersion);
if (result is IDataObject)
{
IDataObject dataObject = (IDataObject)result;
if (dataObject.ToBeUpdated || dataObject.ToBeDeleted)
{
continue;
}
}
if (objRefWithVersion.Version != null)
{
IEntityMetaData metaData = ((IEntityMetaDataHolder)result).Get__EntityMetaData();
Object versionInCache = metaData.VersionMember != null?metaData.VersionMember.GetValue(result, false) : null;
if (versionInCache != null && ((IComparable)objRefWithVersion.Version).CompareTo(versionInCache) <= 0)
{
continue;
}
}
objectsToUpdate.Add(result);
node.objRefsToLoad.Add(objRefWithVersion);
// scanForInitializedObjects(result, alreadyScannedObjects, hardRefOrisToLoad);
objectRefsToUpdate.Add(objRefWithVersion);
}
}
finally
{
readLock.Unlock();
}
if (objectRefsToDelete.Count == 0 && objectsToUpdate.Count == 0)
{
continue;
}
CacheChangeItem cci = new CacheChangeItem();
cci.Cache = childCache;
cci.DeletedObjRefs = objectRefsToDelete;
cci.UpdatedObjRefs = objectRefsToUpdate;
cci.UpdatedObjects = objectsToUpdate;
node.PushPendingChangeOnAnyChildCache(flcIndex, cci);
}
List <CacheDependencyNode> childNodes = node.childNodes;
for (int a = childNodes.Count; a-- > 0;)
{
BuildCacheChangeItems(childNodes[a], deletesToSearchInCache, changesToSearchInCache, changesWithVersion);
}
}
protected void ChangeSecondLevelCacheIntern(CacheDependencyNode node, CacheDirective cacheDirective)
{
IRootCache rootCache = node.rootCache;
HashMap <IObjRef, CacheValueAndPrivilege> objRefToLoadContainerDict = node.objRefToCacheValueMap;
CHashSet <IObjRef> objRefsToLoad = new CHashSet <IObjRef>(node.objRefsToLoad);
if (node.cacheChangeItems != null)
{
foreach (CacheChangeItem cci in node.cacheChangeItems)
{
if (cci == null)
{
continue;
}
objRefsToLoad.AddAll(cci.UpdatedObjRefs);
}
}
IList <IObjRef> objRefs = objRefsToLoad.ToList();
IList <Object> refreshResult = rootCache.GetObjects(objRefs, cacheDirective);
IPrivilege[] privileges = null;
if (SecurityActivation != null && PrivilegeProvider != null && SecurityActivation.FilterActivated)
{
privileges = PrivilegeProvider.GetPrivilegesByObjRef(objRefs).GetPrivileges();
}
for (int a = refreshResult.Count; a-- > 0;)
{
RootCacheValue cacheValue = (RootCacheValue)refreshResult[a];
if (cacheValue == null)
{
continue;
}
objRefToLoadContainerDict.Put(objRefs[a], new CacheValueAndPrivilege(cacheValue, privileges != null ? privileges[a] : null));
}
CheckCascadeRefreshNeeded(node);
CHashSet <IObjRef> cascadeRefreshObjRefsSet = node.cascadeRefreshObjRefsSet;
CHashSet <IObjRelation> cascadeRefreshObjRelationsSet = node.cascadeRefreshObjRelationsSet;
if (cascadeRefreshObjRelationsSet.Count > 0)
{
IList <IObjRelationResult> relationsResult = rootCache.GetObjRelations(cascadeRefreshObjRelationsSet.ToList(), cacheDirective);
for (int a = relationsResult.Count; a-- > 0;)
{
IObjRelationResult relationResult = relationsResult[a];
cascadeRefreshObjRefsSet.AddAll(relationResult.Relations);
}
// apply gathered information of unknown relations to the rootCache
rootCache.Put(relationsResult);
}
if (cascadeRefreshObjRefsSet.Count > 0)
{
IList <IObjRef> cascadeRefreshObjRefsSetList = cascadeRefreshObjRefsSet.ToList();
refreshResult = rootCache.GetObjects(cascadeRefreshObjRefsSetList, cacheDirective);
}
List <CacheDependencyNode> childNodes = node.childNodes;
for (int a = childNodes.Count; a-- > 0;)
{
ChangeSecondLevelCacheIntern(childNodes[a], failInCacheHierarchyAndCacheValueResultAndReturnMissesSet);
}
}
protected void ChangeSecondLevelCache(CacheDependencyNode node)
{
ChangeSecondLevelCacheIntern(node, cacheValueResultAndReturnMissesSet);
}
protected void DataChangedIntern(IDataChange dataChange, IList <Object> pausedEventTargets, IProcessResumeItem processResumeItem, CacheDependencyNode rootNode)
{
try
{
bool isLocalSource = dataChange.IsLocalSource;
IList <IDataChangeEntry> deletes = dataChange.Deletes;
IList <IDataChangeEntry> updates = dataChange.Updates;
IList <IDataChangeEntry> inserts = dataChange.Inserts;
CHashSet <Type> occuringTypes = new CHashSet <Type>();
CHashSet <IObjRef> deletesSet = new CHashSet <IObjRef>();
CHashSet <Type> directRelatingTypes = new CHashSet <Type>();
bool acquirementSuccessful = rootNode.rootCache.AcquireHardRefTLIfNotAlready();
try
{
for (int a = deletes.Count; a-- > 0;)
{
IDataChangeEntry deleteEntry = deletes[a];
Type entityType = deleteEntry.EntityType;
occuringTypes.Add(entityType);
if (deleteEntry is DirectDataChangeEntry)
{
// Ignore delete entries of unpersisted objects here
continue;
}
ObjRef tempORI = new ObjRef(entityType, deleteEntry.IdNameIndex, deleteEntry.Id, deleteEntry.Version);
deletesSet.Add(tempORI);
}
// Remove items from the cache only if they are really deleted/updates by a remote event
// And not 'simulated' by a local source
bool cleanupSecondLevelCaches = false;
if (pausedEventTargets != null && (deletes.Count > 0 || updates.Count > 0) && !isLocalSource)
{
cleanupSecondLevelCaches = true;
}
else if (updates.Count > 0)
{
for (int a = updates.Count; a-- > 0;)
{
IDataChangeEntry updateEntry = updates[a];
Type entityType = updateEntry.EntityType;
occuringTypes.Add(entityType);
}
}
for (int a = inserts.Count; a-- > 0;)
{
IDataChangeEntry insertEntry = inserts[a];
Type entityType = insertEntry.EntityType;
occuringTypes.Add(entityType);
}
EnsureMetaDataIsLoaded(occuringTypes, directRelatingTypes);
if (cleanupSecondLevelCaches)
{
CleanupSecondLevelCaches(rootNode, deletesSet.ToList(), updates, occuringTypes);
}
BuildCacheChangeItems(rootNode, dataChange);
rootNode.AggregateAllCascadedObjRefs();
ISet <IObjRef> intermediateDeletes = rootNode.lookForIntermediateDeletes();
ChangeSecondLevelCache(rootNode);
if (rootNode.IsPendingChangeOnAnyChildCache())
{
GuiThreadHelper.InvokeInGuiAndWait(delegate()
{
bool oldFailEarlyModeActive = AbstractCache.FailInCacheHierarchyModeActive;
AbstractCache.FailInCacheHierarchyModeActive = true;
try
{
ChangeFirstLevelCaches(rootNode, intermediateDeletes);
}
finally
{
AbstractCache.FailInCacheHierarchyModeActive = oldFailEarlyModeActive;
}
});
}
}
finally
{
rootNode.rootCache.ClearHardRefs(acquirementSuccessful);
}
}
finally
{
if (processResumeItem != null)
{
processResumeItem.ResumeProcessingFinished();
}
}
}