EclipseLink Core 4.0.2 · org.eclipse.persistence.internal.sessions.MergeManager

Field Summary

Modifier and Type	Field and Description
protected ArrayList<CacheKey>	acquiredLocks Used to store the list of locks that this merge manager has acquired for this merge
public static final int	CASCADE_ALL_PARTS
public static final int	CASCADE_BY_MAPPING
public static final int	CASCADE_PRIVATE_PARTS
protected int	cascadePolicy Policy that determines how the merge will cascade to its object's parts.
protected static final int	CHANGES_INTO_DISTRIBUTED_CACHE
protected static final int	CLONE_INTO_WORKING_COPY
protected static final int	CLONE_WITH_REFS_INTO_WORKING_COPY
protected boolean	forceCascade Force cascade merge even if a clone is already registered
protected boolean	isForRefresh records that this merge process is for a refresh
protected boolean	isTransitionedToDeferredLocks records that deferred locks have been employed for the merge process
public static boolean	LOCK_ON_MERGE Backdoor to disable merge locks.
protected Thread	lockThread save the currentThread for later comparison to the activeThread in case they don't match
protected IdentityHashMap<Object, Object>	mergedNewObjects Used to keep track of merged new objects.
protected int	mergePolicy Policy that determines merge type (i.e. merge is used for several usages).
public static final int	NO_CASCADE
protected Map<Object, ObjectDescriptor>	objectDescriptors Used only while refreshing objects on remote session
protected Map<AbstractSession, Map<Object, Object>>	objectsAlreadyMerged Used to unravel recursion.
protected static final int	ORIGINAL_INTO_WORKING_COPY
protected LinkedNode	queueNode Stores the node that holds this mergemanager within the WriteLocksManager queue
protected static final int	REFRESH_REMOTE_OBJECT
protected AbstractSession	session The unit of work merging for.
protected long	systemTime Stored so that all objects merged by a merge manager can have the same readTime.
protected static final int	WORKING_COPY_INTO_ORIGINAL
protected static final int	WORKING_COPY_INTO_REMOTE
protected Object	writeLockQueued If this variable is not null then the mergemanager is waiting on a particular primary key

Constructor Summary

Access	Constructor and Description
public	MergeManager(AbstractSession session)

Method Summary

Modifier and Type	Method and Description
public void	cascadeAllParts() Cascade all parts, this is the default for the merge.
public void	cascadePrivateParts() Cascade private parts, this can be used to merge clone when using RMI.
public void	checkNewObjectLockVersion(Object clone, Object primaryKey, ClassDescriptor descriptor, UnitOfWorkImpl unitOfWork) Check if the new object's version has been set, if so, then it was an existing object that was deleted.
public void	dontCascadeParts() Merge only direct parts, this can be used to merge clone when using RMI.
public ArrayList<CacheKey>	getAcquiredLocks()
public int	getCascadePolicy()
public Thread	Returns: lockThread getLockThread() INTERNAL:
public IdentityHashMap<Object, Object>	Returns: Map getMergedNewObjects() INTERNAL: Used to return a map containing new objects found through the registerObjectForMergeCloneIntoWorkingCopy method.
public Object	getMergedObject(Object key, AbstractSession targetSession)
protected int	getMergePolicy()
public Map<Object, ObjectDescriptor>	getObjectDescriptors()
public Map<AbstractSession, Map<Object, Object>>	getObjectsAlreadyMerged()
public Object	getObjectToMerge(Object sourceValue, ClassDescriptor descriptor, AbstractSession targetSession)
public LinkedNode	getQueueNode() INTENRAL: Used to get the node that this merge manager is stored in, within the WriteLocksManager write lockers queue
public AbstractSession	getSession()
public long	getSystemTime() Get the stored value of the current time.
public Object	getTargetVersionOfSourceObject(Object source, ClassDescriptor descriptor, AbstractSession targetSession) Return the corresponding value that should be assigned to the target object for the source object.
public Object	getWriteLockQueued() INTENRAL: Used to get the object that the merge manager is waiting on, in order to acquire locks
public boolean	isAlreadyMerged(Object object, AbstractSession targetSession)
public boolean	Returns: the isForMerge isForRefresh()
public boolean	isTransitionedToDeferredLocks() INTERNAL: Will return if the merge process has transitioned the active merge locks to deferred locks for readlock deadlock avoidance.
public Object	mergeChanges(Object object, ObjectChangeSet objectChangeSet, AbstractSession targetSession) Recursively merge changes in the object dependent on the merge policy.
protected Object	mergeChangesForRefreshingRemoteObject(Object serverSideDomainObject) Recursively merge the RMI clone from the server into the client unit of work working copy.
public void	mergeChangesFromChangeSet(UnitOfWorkChangeSet uowChangeSet) INTERNAL: Merge the changes to all objects to session's cache.
protected Object	mergeChangesIntoDistributedCache(Object original, ObjectChangeSet changeSet) Merge the changes specified within the changeSet into the cache.
protected Object	mergeChangesOfCloneIntoWorkingCopy(Object rmiClone) Recursively merge to rmi clone into the unit of work working copy.
protected Object	mergeChangesOfOriginalIntoWorkingCopy(Object clone) Recursively merge to original from its parent into the clone.
protected Object	mergeChangesOfWorkingCopyIntoOriginal(Object clone, ObjectChangeSet objectChangeSet) Recursively merge to clone into the original in its parent.
protected CacheKey	mergeChangesOfWorkingCopyIntoOriginal(Object clone, ObjectChangeSet objectChangeSet, ClassDescriptor descriptor, AbstractSession targetSession, UnitOfWorkImpl unitOfWork) Recursively merge to clone into the original in its parent.
public Object	mergeChangesOfWorkingCopyIntoRemote(Object clone) Recursively merge changes in the object dependent on the merge policy.
public void	mergeCloneIntoWorkingCopy() This can be used by the user for merging clones from RMI into the unit of work.
public void	mergeCloneWithReferencesIntoWorkingCopy() This is used during the merge of dependent objects referencing independent objects, where you want the independent objects merged as well.
public void	mergeIntoDistributedCache() This is used during cache synchronization to merge the changes into the distributed cache.
public Object	mergeNewObjectIntoCache(ObjectChangeSet changeSet) Merge a change set for a new object into the cache.
public void	mergeOriginalIntoWorkingCopy() This is used to revert changes to objects, or during refreshes.
public void	mergeWorkingCopyIntoOriginal() This is used during the unit of work commit to merge changes into the parent.
public void	mergeWorkingCopyIntoRemote() This is used during the unit of work commit to merge changes into the parent.
public void	recordMerge(Object key, Object value, AbstractSession targetSession)
public void	refreshRemoteObject() INTERNAL: This is used to refresh remote session object
public Object	registerExistingObjectOfReadOnlyClassInNestedTransaction(Object source, ClassDescriptor descriptor, AbstractSession targetSession) INTERNAL: Used to register an existing object used in nested unit of work with read-only class in root unit of work.
protected Object	registerObjectForMergeCloneIntoWorkingCopy(Object clone, boolean shouldForceCascade) INTERNAL: When merging from a clone when the cache cannot be guaranteed the object must be first read if it is existing and not in the cache.
public void	registerRemovedNewObjectIfRequired(Object removedObject) Determine if the object is a registered new object, and that this is a nested unit of work merge into the parent.
public void	setCascadePolicy(int cascadePolicy)
public void	setForceCascade(boolean forceCascade)
public void	setForRefresh(boolean the isForMerge to set isforRefresh)
public void	setLockThread(Thread lockThread) INTERNAL: Save the currentThread for later comparison to the activeThread in case they don't match
protected void	setMergePolicy(int mergePolicy)
public void	setObjectDescriptors(Map<Object, ObjectDescriptor> objectDescriptors)
protected void	setObjectsAlreadyMerged(Map<AbstractSession, Map<Object, Object>> objectsAlreadyMerged)
public void	setQueueNode(LinkedNode node) INTENRAL: Used to set the node that this merge manager is stored in, within the WriteLocksManager write lockers queue
protected void	setSession(AbstractSession session)
public void	setWriteLockQueued(Object primaryKey) INTENRAL: Used to set the object that the merge manager is waiting on, in order to acquire locks If this value is null then the merge manager is not waiting on any locks.
public boolean	shouldCascadeAllParts() Flag used to determine if all parts should be cascaded
public boolean	shouldCascadeByMapping() Flag used to determine that the mappings should be checked for cascade requirements.
public boolean	shouldCascadeParts() Flag used to determine if any parts should be cascaded
public boolean	shouldCascadePrivateParts() Flag used to determine if any private parts should be cascaded
public boolean	shouldCascadeReferences() Refreshes are based on the objects row, so all attributes of the object must be refreshed.
public boolean	shouldForceCascade() This is used to cascade merge even if a clone is already registered.
public boolean	shouldMergeChangesIntoDistributedCache() INTERNAL: This happens when changes from an UnitOfWork is propagated to a distributed class.
public boolean	shouldMergeCloneIntoWorkingCopy() This can be used by the user for merging clones from RMI into the unit of work.
public boolean	shouldMergeCloneWithReferencesIntoWorkingCopy() This can be used by the user for merging remote EJB objects into the unit of work.
public boolean	shouldMergeOriginalIntoWorkingCopy() This is used to revert changes to objects, or during refreshes.
public boolean	shouldMergeWorkingCopyIntoOriginal() This is used during the unit of work commit to merge changes into the parent.
public boolean	shouldMergeWorkingCopyIntoRemote() INTERNAL: This happens when serialized remote unit of work has to be merged with local remote unit of work.
public boolean	shouldRefreshRemoteObject() INTERNAL: This is used to refresh objects on the remote session
public void	transitionToDeferredLocks() INTERNAL: Records that this merge manager has transitioned to use deferred locks during the merge.
protected void	updateCacheKeyProperties(UnitOfWorkImpl unitOfWork, CacheKey cacheKey, Object original, Object clone, ObjectChangeSet objectChangeSet, ClassDescriptor descriptor) INTERNAL: Update CacheKey properties with new information.

Inherited from java.lang.Object:: clone equals finalize getClass hashCode notify notifyAll toString wait wait wait

Field Detail

acquiredLocks	back to summary
protected ArrayList<CacheKey> acquiredLocks Used to store the list of locks that this merge manager has acquired for this merge

CASCADE_ALL_PARTS	back to summary
public static final int CASCADE_ALL_PARTS

CASCADE_BY_MAPPING	back to summary
public static final int CASCADE_BY_MAPPING

CASCADE_PRIVATE_PARTS	back to summary
public static final int CASCADE_PRIVATE_PARTS

cascadePolicy	back to summary
protected int cascadePolicy Policy that determines how the merge will cascade to its object's parts.

CHANGES_INTO_DISTRIBUTED_CACHE	back to summary
protected static final int CHANGES_INTO_DISTRIBUTED_CACHE

CLONE_INTO_WORKING_COPY	back to summary
protected static final int CLONE_INTO_WORKING_COPY

CLONE_WITH_REFS_INTO_WORKING_COPY	back to summary
protected static final int CLONE_WITH_REFS_INTO_WORKING_COPY

forceCascade	back to summary
protected boolean forceCascade Force cascade merge even if a clone is already registered

isForRefresh	back to summary
protected boolean isForRefresh records that this merge process is for a refresh

isTransitionedToDeferredLocks	back to summary
protected boolean isTransitionedToDeferredLocks records that deferred locks have been employed for the merge process

LOCK_ON_MERGE	back to summary
public static boolean LOCK_ON_MERGE Backdoor to disable merge locks.

lockThread	back to summary
protected Thread lockThread save the currentThread for later comparison to the activeThread in case they don't match

mergedNewObjects	back to summary
protected IdentityHashMap<Object, Object> mergedNewObjects Used to keep track of merged new objects.

mergePolicy	back to summary
protected int mergePolicy Policy that determines merge type (i.e. merge is used for several usages).

NO_CASCADE	back to summary
public static final int NO_CASCADE

objectDescriptors	back to summary
protected Map<Object, ObjectDescriptor> objectDescriptors Used only while refreshing objects on remote session

objectsAlreadyMerged	back to summary
protected Map<AbstractSession, Map<Object, Object>> objectsAlreadyMerged Used to unravel recursion.

ORIGINAL_INTO_WORKING_COPY	back to summary
protected static final int ORIGINAL_INTO_WORKING_COPY

queueNode	back to summary
protected LinkedNode queueNode Stores the node that holds this mergemanager within the WriteLocksManager queue

REFRESH_REMOTE_OBJECT	back to summary
protected static final int REFRESH_REMOTE_OBJECT

session	back to summary
protected AbstractSession session The unit of work merging for.

systemTime	back to summary
protected long systemTime Stored so that all objects merged by a merge manager can have the same readTime.

WORKING_COPY_INTO_ORIGINAL	back to summary
protected static final int WORKING_COPY_INTO_ORIGINAL

WORKING_COPY_INTO_REMOTE	back to summary
protected static final int WORKING_COPY_INTO_REMOTE

writeLockQueued	back to summary
protected Object writeLockQueued If this variable is not null then the mergemanager is waiting on a particular primary key

Constructor Detail

MergeManager	back to summary
public MergeManager(AbstractSession session)

Method Detail

cascadeAllParts	back to summary
public void cascadeAllParts() Cascade all parts, this is the default for the merge.

cascadePrivateParts	back to summary
public void cascadePrivateParts() Cascade private parts, this can be used to merge clone when using RMI.

checkNewObjectLockVersion	back to summary
public void checkNewObjectLockVersion(Object clone, Object primaryKey, ClassDescriptor descriptor, UnitOfWorkImpl unitOfWork) Check if the new object's version has been set, if so, then it was an existing object that was deleted. Raise an error instead of reincarnating the object.

dontCascadeParts	back to summary
public void dontCascadeParts() Merge only direct parts, this can be used to merge clone when using RMI.

getAcquiredLocks	back to summary
public ArrayList<CacheKey> getAcquiredLocks()

getCascadePolicy	back to summary
public int getCascadePolicy()

getLockThread	back to summary
public Thread getLockThread() INTERNAL: Returns:Thread lockThread

getLockThread

back to summary

public Thread getLockThread()

INTERNAL:

Returns:Thread: lockThread

getMergedNewObjects	back to summary
public IdentityHashMap<Object, Object> getMergedNewObjects() INTERNAL: Used to return a map containing new objects found through the registerObjectForMergeCloneIntoWorkingCopy method. Returns:IdentityHashMap<Object, Object> Map

getMergedNewObjects

back to summary

public IdentityHashMap<Object, Object> getMergedNewObjects()

INTERNAL: Used to return a map containing new objects found through the registerObjectForMergeCloneIntoWorkingCopy method.

Returns:IdentityHashMap<Object, Object>: Map

getMergedObject	back to summary
public Object getMergedObject(Object key, AbstractSession targetSession)

getMergePolicy	back to summary
protected int getMergePolicy()

getObjectDescriptors	back to summary
public Map<Object, ObjectDescriptor> getObjectDescriptors()

getObjectsAlreadyMerged	back to summary
public Map<AbstractSession, Map<Object, Object>> getObjectsAlreadyMerged()

getObjectToMerge	back to summary
public Object getObjectToMerge(Object sourceValue, ClassDescriptor descriptor, AbstractSession targetSession)

getQueueNode	back to summary
public LinkedNode getQueueNode() INTENRAL: Used to get the node that this merge manager is stored in, within the WriteLocksManager write lockers queue

getSession	back to summary
public AbstractSession getSession()

getSystemTime	back to summary
public long getSystemTime() Get the stored value of the current time. This method lazily initializes so that read times for the same merge manager can all be set to the same read time

getTargetVersionOfSourceObject	back to summary
public Object getTargetVersionOfSourceObject(Object source, ClassDescriptor descriptor, AbstractSession targetSession) Return the corresponding value that should be assigned to the target object for the source object. This value must be local to the targets object space.

getWriteLockQueued	back to summary
public Object getWriteLockQueued() INTENRAL: Used to get the object that the merge manager is waiting on, in order to acquire locks

isAlreadyMerged	back to summary
public boolean isAlreadyMerged(Object object, AbstractSession targetSession)

isForRefresh	back to summary
public boolean isForRefresh() Returns:boolean the isForMerge

isTransitionedToDeferredLocks	back to summary
public boolean isTransitionedToDeferredLocks() INTERNAL: Will return if the merge process has transitioned the active merge locks to deferred locks for readlock deadlock avoidance.

mergeChanges	back to summary
public Object mergeChanges(Object object, ObjectChangeSet objectChangeSet, AbstractSession targetSession) throws ValidationException Recursively merge changes in the object dependent on the merge policy. The map is used to resolve recursion.

mergeChangesForRefreshingRemoteObject	back to summary
protected Object mergeChangesForRefreshingRemoteObject(Object serverSideDomainObject) Recursively merge the RMI clone from the server into the client unit of work working copy. This will only be called if the working copy exists.

mergeChangesFromChangeSet	back to summary
public void mergeChangesFromChangeSet(UnitOfWorkChangeSet uowChangeSet) INTERNAL: Merge the changes to all objects to session's cache.

mergeChangesIntoDistributedCache	back to summary
protected Object mergeChangesIntoDistributedCache(Object original, ObjectChangeSet changeSet) Merge the changes specified within the changeSet into the cache. The object passed in is the original object from the cache.

mergeChangesOfCloneIntoWorkingCopy	back to summary
protected Object mergeChangesOfCloneIntoWorkingCopy(Object rmiClone) Recursively merge to rmi clone into the unit of work working copy. The map is used to resolve recursion.

mergeChangesOfOriginalIntoWorkingCopy	back to summary
protected Object mergeChangesOfOriginalIntoWorkingCopy(Object clone) Recursively merge to original from its parent into the clone. The map is used to resolve recursion.

mergeChangesOfWorkingCopyIntoOriginal	back to summary
protected Object mergeChangesOfWorkingCopyIntoOriginal(Object clone, ObjectChangeSet objectChangeSet) Recursively merge to clone into the original in its parent. The map is used to resolve recursion.

mergeChangesOfWorkingCopyIntoOriginal	back to summary
protected CacheKey mergeChangesOfWorkingCopyIntoOriginal(Object clone, ObjectChangeSet objectChangeSet, ClassDescriptor descriptor, AbstractSession targetSession, UnitOfWorkImpl unitOfWork) Recursively merge to clone into the original in its parent. The map is used to resolve recursion. This is used to merge objects from the unit of work into the shared (or isolated) cache.

mergeChangesOfWorkingCopyIntoRemote	back to summary
public Object mergeChangesOfWorkingCopyIntoRemote(Object clone) throws ValidationException Recursively merge changes in the object dependent on the merge policy. This merges changes from a remote unit of work back from the server into the original remote unit of work. This is meant to merge server-side changes such as sequence numbers, version numbers or events triggered changes.

mergeCloneIntoWorkingCopy	back to summary
public void mergeCloneIntoWorkingCopy() This can be used by the user for merging clones from RMI into the unit of work.

mergeCloneWithReferencesIntoWorkingCopy	back to summary
public void mergeCloneWithReferencesIntoWorkingCopy() This is used during the merge of dependent objects referencing independent objects, where you want the independent objects merged as well.

mergeIntoDistributedCache	back to summary
public void mergeIntoDistributedCache() This is used during cache synchronization to merge the changes into the distributed cache.

mergeNewObjectIntoCache	back to summary
public Object mergeNewObjectIntoCache(ObjectChangeSet changeSet) Merge a change set for a new object into the cache. This method will create a shell for the new object and then merge the changes from the change set into the object. The newly merged object will then be added to the cache.

mergeOriginalIntoWorkingCopy	back to summary
public void mergeOriginalIntoWorkingCopy() This is used to revert changes to objects, or during refreshes.

mergeWorkingCopyIntoOriginal	back to summary
public void mergeWorkingCopyIntoOriginal() This is used during the unit of work commit to merge changes into the parent.

mergeWorkingCopyIntoRemote	back to summary
public void mergeWorkingCopyIntoRemote() This is used during the unit of work commit to merge changes into the parent.

recordMerge	back to summary
public void recordMerge(Object key, Object value, AbstractSession targetSession)

refreshRemoteObject	back to summary
public void refreshRemoteObject() INTERNAL: This is used to refresh remote session object

registerExistingObjectOfReadOnlyClassInNestedTransaction	back to summary
public Object registerExistingObjectOfReadOnlyClassInNestedTransaction(Object source, ClassDescriptor descriptor, AbstractSession targetSession) INTERNAL: Used to register an existing object used in nested unit of work with read-only class in root unit of work.

registerObjectForMergeCloneIntoWorkingCopy	back to summary
protected Object registerObjectForMergeCloneIntoWorkingCopy(Object clone, boolean shouldForceCascade) INTERNAL: When merging from a clone when the cache cannot be guaranteed the object must be first read if it is existing and not in the cache. Otherwise no changes will be detected as the original state is missing.

registerRemovedNewObjectIfRequired	back to summary
public void registerRemovedNewObjectIfRequired(Object removedObject) Determine if the object is a registered new object, and that this is a nested unit of work merge into the parent. In this case private mappings will register the object as being removed.

setCascadePolicy	back to summary
public void setCascadePolicy(int cascadePolicy)

setForceCascade	back to summary
public void setForceCascade(boolean forceCascade)

setForRefresh	back to summary
public void setForRefresh(boolean isforRefresh) Parameters isforRefresh:boolean the isForMerge to set

setLockThread	back to summary
public void setLockThread(Thread lockThread) INTERNAL: Save the currentThread for later comparison to the activeThread in case they don't match

setMergePolicy	back to summary
protected void setMergePolicy(int mergePolicy)

setObjectDescriptors	back to summary
public void setObjectDescriptors(Map<Object, ObjectDescriptor> objectDescriptors)

setObjectsAlreadyMerged	back to summary
protected void setObjectsAlreadyMerged(Map<AbstractSession, Map<Object, Object>> objectsAlreadyMerged)

setQueueNode	back to summary
public void setQueueNode(LinkedNode node) INTENRAL: Used to set the node that this merge manager is stored in, within the WriteLocksManager write lockers queue

setSession	back to summary
protected void setSession(AbstractSession session)

setWriteLockQueued	back to summary
public void setWriteLockQueued(Object primaryKey) INTENRAL: Used to set the object that the merge manager is waiting on, in order to acquire locks If this value is null then the merge manager is not waiting on any locks.

shouldCascadeAllParts	back to summary
public boolean shouldCascadeAllParts() Flag used to determine if all parts should be cascaded

shouldCascadeByMapping	back to summary
public boolean shouldCascadeByMapping() Flag used to determine that the mappings should be checked for cascade requirements.

shouldCascadeParts	back to summary
public boolean shouldCascadeParts() Flag used to determine if any parts should be cascaded

shouldCascadePrivateParts	back to summary
public boolean shouldCascadePrivateParts() Flag used to determine if any private parts should be cascaded

shouldCascadeReferences	back to summary
public boolean shouldCascadeReferences() Refreshes are based on the objects row, so all attributes of the object must be refreshed. However merging from RMI, normally reference are made transient, so should not be merge unless specified.

shouldForceCascade	back to summary
public boolean shouldForceCascade() This is used to cascade merge even if a clone is already registered.

shouldMergeChangesIntoDistributedCache	back to summary
public boolean shouldMergeChangesIntoDistributedCache() INTERNAL: This happens when changes from an UnitOfWork is propagated to a distributed class.

shouldMergeCloneIntoWorkingCopy	back to summary
public boolean shouldMergeCloneIntoWorkingCopy() This can be used by the user for merging clones from RMI into the unit of work.

shouldMergeCloneWithReferencesIntoWorkingCopy	back to summary
public boolean shouldMergeCloneWithReferencesIntoWorkingCopy() This can be used by the user for merging remote EJB objects into the unit of work.

shouldMergeOriginalIntoWorkingCopy	back to summary
public boolean shouldMergeOriginalIntoWorkingCopy() This is used to revert changes to objects, or during refreshes.

shouldMergeWorkingCopyIntoOriginal	back to summary
public boolean shouldMergeWorkingCopyIntoOriginal() This is used during the unit of work commit to merge changes into the parent.

shouldMergeWorkingCopyIntoRemote	back to summary
public boolean shouldMergeWorkingCopyIntoRemote() INTERNAL: This happens when serialized remote unit of work has to be merged with local remote unit of work.

shouldRefreshRemoteObject	back to summary
public boolean shouldRefreshRemoteObject() INTERNAL: This is used to refresh objects on the remote session

transitionToDeferredLocks	back to summary
public void transitionToDeferredLocks() INTERNAL: Records that this merge manager has transitioned to use deferred locks during the merge.

updateCacheKeyProperties	back to summary
protected void updateCacheKeyProperties(UnitOfWorkImpl unitOfWork, CacheKey cacheKey, Object original, Object clone, ObjectChangeSet objectChangeSet, ClassDescriptor descriptor) INTERNAL: Update CacheKey properties with new information. This method is called if this code actually merges

public Class MergeManager

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