File	Doc	Category	Size	Date	Package
ObjectChangePolicy.java	API Doc	Glassfish v2 API	7506	Tue May 22 16:54:16 BST 2007	oracle.toplink.essentials.descriptors.changetracking

ObjectChangePolicy

Fields Summary

Constructors Summary

Methods Summary
public java.lang.Object	buildBackupClone(java.lang.Object clone, oracle.toplink.essentials.internal.descriptors.ObjectBuilder builder, oracle.toplink.essentials.internal.sessions.UnitOfWorkImpl uow) INTERNAL: Build back up clone.
public oracle.toplink.essentials.internal.sessions.ObjectChangeSet	calculateChanges(java.lang.Object clone, java.lang.Object backUp, oracle.toplink.essentials.internal.sessions.UnitOfWorkChangeSet changes, oracle.toplink.essentials.internal.sessions.AbstractSession session, oracle.toplink.essentials.descriptors.ClassDescriptor descriptor, boolean shouldRiseEvent) INTERNAL: calculateChanges creates a change set for a particular object return oracle.toplink.essentials.changesets.ObjectChangeSet an object change set describing the changes to this object param clone the Object to compute a change set for param backUp the old version of the object to use for comparison param changes the change set to add changes to param session the current session param descriptor the descriptor for this object param shouldRiseEvent indicates whether PreUpdate event should be risen (usually true)
public void	clearChanges(java.lang.Object object, oracle.toplink.essentials.internal.sessions.UnitOfWorkImpl uow, oracle.toplink.essentials.descriptors.ClassDescriptor descriptor) INTERNAL: This is a place holder for reseting the listener on one of the subclasses
public oracle.toplink.essentials.internal.sessions.ObjectChangeSet	createObjectChangeSetThroughComparison(java.lang.Object clone, java.lang.Object backUp, oracle.toplink.essentials.internal.sessions.UnitOfWorkChangeSet changeSet, boolean isNew, oracle.toplink.essentials.internal.sessions.AbstractSession session, oracle.toplink.essentials.descriptors.ClassDescriptor descriptor) INTERNAL: Create ObjectChangeSet through comparison. Used in cases where we need to force change calculation (ie aggregates)
public void	dissableEventProcessing(java.lang.Object changeTracker) INTERNAL: This method is used to dissable changetracking temporarily
public void	enableEventProcessing(java.lang.Object changeTracker) INTERNAL: This method is used to enable changetracking temporarily
public void	initialize(oracle.toplink.essentials.internal.sessions.AbstractSession session, oracle.toplink.essentials.descriptors.ClassDescriptor descriptor) INTERNAL: initialize the Policy
public boolean	isAttributeChangeTrackingPolicy() Used to track instances of the change policies without doing an instance of check
public boolean	isDeferredChangeDetectionPolicy() Used to track instances of the change policies without doing an instance of check
public boolean	isObjectChangeTrackingPolicy() Used to track instances of the change policies without doing an instance of check
public void	raiseInternalPropertyChangeEvent(java.lang.Object source, java.lang.String propertyName, java.lang.Object oldValue, java.lang.Object newValue) INTERNAL: This may cause a property change event to be raised to a listner in the case that a listener exists. If there is no listener then this call is a no-op
public void	revertChanges(java.lang.Object clone, oracle.toplink.essentials.descriptors.ClassDescriptor descriptor, oracle.toplink.essentials.internal.sessions.UnitOfWorkImpl uow, oracle.toplink.essentials.internal.helper.IdentityHashtable cloneMapping) INTERNAL: This method is used to revert an object within the unit of work
public void	setAggregateChangeListener(java.lang.Object parent, java.lang.Object aggregate, oracle.toplink.essentials.internal.sessions.UnitOfWorkImpl uow, oracle.toplink.essentials.descriptors.ClassDescriptor descriptor, java.lang.String mappingAttribute) INTERNAL: Assign Changelistner to an aggregate object
public void	setChangeListener(java.lang.Object clone, oracle.toplink.essentials.internal.sessions.UnitOfWorkImpl uow, oracle.toplink.essentials.descriptors.ClassDescriptor descriptor) INTERNAL: Assign appropriate ChangeListener to PropertyChangeListener based on the policy.
public void	setChangeSetOnListener(oracle.toplink.essentials.internal.sessions.ObjectChangeSet objectChangeSet, java.lang.Object clone) INTERNAL: Set the ObjectChangeSet on the Listener, initially used for aggregate support
public boolean	shouldCompareForChange(java.lang.Object object, oracle.toplink.essentials.internal.sessions.UnitOfWorkImpl unitOfWork, oracle.toplink.essentials.descriptors.ClassDescriptor descriptor) INTERNAL: Return true if the Object should be compared, false otherwise. This method is implemented to allow run time determination of whether a change set should be computed for an object. In general, calculateChanges() will only be executed in a UnitOfWork if this method returns true. param object the object that will be compared param unitOfWork the active unitOfWork param descriptor the descriptor for the current object
public void	updateWithChanges(java.lang.Object clone, oracle.toplink.essentials.internal.sessions.ObjectChangeSet objectChangeSet, oracle.toplink.essentials.internal.sessions.UnitOfWorkImpl uow, oracle.toplink.essentials.descriptors.ClassDescriptor descriptor) INTERNAL: This method is used internally to rest the policies back to original state This is used when the clones are to be reused.