Package org.eclipse.emf.compare.domain.impl

Class EMFCompareChangeRecorder

java.lang.Object

org.eclipse.emf.ecore.change.util.ListDifferenceAnalyzer

org.eclipse.emf.ecore.change.util.BasicChangeRecorder

org.eclipse.emf.ecore.change.util.ChangeRecorder

org.eclipse.emf.compare.domain.impl.EMFCompareChangeRecorder

All Implemented Interfaces:

Adapter, Adapter.Internal

public class EMFCompareChangeRecorder
extends ChangeRecorder

This custom implementation of a change recorder will avoid copying the internal lists every time they're needed as they can grow to very large sizes along with the size of the compared models.

Nested Class Summary

Nested classes/interfaces inherited from interface org.eclipse.emf.common.notify.Adapter

Adapter.Internal

Field Summary

Fields inherited from class org.eclipse.emf.ecore.change.util.ChangeRecorder

eObjectToProxyURIMap, loadingTargets, originalTargetObjects, resolveProxies, targetObjects

Fields inherited from class org.eclipse.emf.ecore.change.util.BasicChangeRecorder

changeDescription, recording, recordingTransientFeatures

Constructor Summary

Constructors

Constructor	Description
EMFCompareChangeRecorder()

Method Summary

Modifier and Type	Method	Description
void	beginRecording(ChangeDescription changeDescription, Collection<?> rootObjects)	This avoids growing the "originalTargetObjects" and "setOriginalTargetObjects" collections indefinitely during the same comparison each time a merge is executed.
protected void	consolidateChanges()	See bug 562321.
protected ChangeDescription	createChangeDescription()
protected void	handleFeature(EStructuralFeature feature, EReference containment, Notification notification, EObject eObject)	The "setOriginalTargetObjects" Set is used to register target objects instead of the "originalTargetObjects" list to avoid duplicates, and fill this list with the bare minimum afterwards, for optimization purposes.
void	setTarget(Notifier target)	Overrides the superclass method to ignore the "originalTargetObjets" list since we never resume recording a paused change description.

Methods inherited from class org.eclipse.emf.ecore.change.util.ChangeRecorder

addAdapter, beginRecording, dispose, getEObjectToProxyURIMap, getTarget, handleResource, handleTarget, isAdapterForType, isOrphan, isResolveProxies, notifyChanged, prepareChangeDescriptionForResume, removeAdapter, setEObjectToProxyURIMap, setResolveProxies, shouldRecord, unsetTarget

Methods inherited from class org.eclipse.emf.ecore.change.util.BasicChangeRecorder

createFeatureChange, createResourceChange, eliminateEmptyChanges, endRecording, finalizeChange, finalizeChange, getChangeDescription, getFeatureChange, getFeatureChanges, getResourceChange, getResourceChanges, isRecording, isRecordingTransientFeatures, setChangeDescription, setRecording, setRecordingTransientFeatures, shouldRecord, summarize

Methods inherited from class org.eclipse.emf.ecore.change.util.ListDifferenceAnalyzer

analyzeLists, analyzeLists, createAddListChange, createListChange, createListChanges, createMoveListChange, createRemoveListChange, equal

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Details

EMFCompareChangeRecorder

public EMFCompareChangeRecorder()

Method Details

setTarget

public void setTarget(Notifier target)

Overrides the superclass method to ignore the "originalTargetObjets" list since we never resume recording a paused change description.

Specified by:

setTarget in interface Adapter

Overrides:

setTarget in class ChangeRecorder

handleFeature

protected void handleFeature(EStructuralFeature feature,
 EReference containment,
 Notification notification,
 EObject eObject)

The "setOriginalTargetObjects" Set is used to register target objects instead of the "originalTargetObjects" list to avoid duplicates, and fill this list with the bare minimum afterwards, for optimization purposes.

Overrides:

handleFeature in class ChangeRecorder

beginRecording

public void beginRecording(ChangeDescription changeDescription,
 Collection<?> rootObjects)

This avoids growing the "originalTargetObjects" and "setOriginalTargetObjects" collections indefinitely during the same comparison each time a merge is executed.

Overrides:

beginRecording in class ChangeRecorder

consolidateChanges

protected void consolidateChanges()

See bug 562321. Some Sirius objects that changed during merging may become orphans and were removed by the org.eclipse.emf.ecore.change.util.ChangeRecorder#consolidateChanges() method. So we fill the originalTargetObjects list with these orphaned objects to keep them.

Overrides:

consolidateChanges in class ChangeRecorder

createChangeDescription

protected ChangeDescription createChangeDescription()

Overrides:

createChangeDescription in class BasicChangeRecorder