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/*******************************************************************************
* Copyright (c) 2011 Obeo and others.
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License v1.0
* which accompanies this distribution, and is available at
* http://www.eclipse.org/legal/epl-v10.html
*
* Contributors:
* Obeo - initial API and implementation
* Arthur Daussy (Atos) - [361666] Fixing target of stereotype application differences
*******************************************************************************/
package org.eclipse.emf.compare.uml2.diff.internal.extension.profile;
import org.eclipse.emf.compare.diff.metamodel.AbstractDiffExtension;
import org.eclipse.emf.compare.diff.metamodel.DiffElement;
import org.eclipse.emf.compare.diff.metamodel.DiffModel;
import org.eclipse.emf.compare.diff.metamodel.UpdateReference;
import org.eclipse.emf.compare.uml2.diff.UML2DiffEngine;
import org.eclipse.emf.compare.uml2.diff.internal.extension.AbstractDiffExtensionFactory;
import org.eclipse.emf.compare.uml2diff.UML2DiffFactory;
import org.eclipse.emf.compare.uml2diff.UMLStereotypeUpdateReference;
import org.eclipse.emf.ecore.EObject;
import org.eclipse.emf.ecore.EStructuralFeature;
import org.eclipse.emf.ecore.util.EcoreUtil;
import org.eclipse.uml2.uml.util.UMLUtil;
/**
* Factory for UMLStereotypeAttributeChangeLeftTarget.
*
* @author <a href="mailto:mikael.barbero@obeo.fr">Mikael Barbero</a>
*/
public class UMLStereotypeUpdateReferenceFactory extends AbstractDiffExtensionFactory {
/**
* Constructor.
*
* @param engine
* The UML2 difference engine.
*/
public UMLStereotypeUpdateReferenceFactory(UML2DiffEngine engine) {
super(engine);
}
/**
* {@inheritDoc}
*
* @see org.eclipse.emf.compare.uml2.diff.internal.extension.IDiffExtensionFactory#handles(org.eclipse.emf.compare.diff.metamodel.DiffElement)
*/
public boolean handles(DiffElement input) {
if (input instanceof UpdateReference) {
final EObject left = ((UpdateReference)input).getLeftElement();
final EObject right = ((UpdateReference)input).getRightElement();
final EObject leftBase = UMLUtil.getBaseElement(left);
final EObject rightBase = UMLUtil.getBaseElement(right);
return leftBase != null && rightBase != null;
}
return false;
}
/**
* {@inheritDoc}
*
* @see org.eclipse.emf.compare.uml2.diff.internal.extension.IDiffExtensionFactory#create(org.eclipse.emf.compare.diff.metamodel.DiffElement,
* org.eclipse.emf.ecore.util.EcoreUtil.CrossReferencer)
*/
public AbstractDiffExtension create(DiffElement input, EcoreUtil.CrossReferencer crossReferencer) {
final UpdateReference updateReference = (UpdateReference)input;
final EObject leftElement = updateReference.getLeftElement();
final EObject rightElement = updateReference.getRightElement();
final EObject leftBase = UMLUtil.getBaseElement(leftElement);
final EObject rightBase = UMLUtil.getBaseElement(rightElement);
final UMLStereotypeUpdateReference ret = UML2DiffFactory.eINSTANCE
.createUMLStereotypeUpdateReference();
ret.setStereotype(UMLUtil.getStereotype(rightElement));
ret.setRemote(input.isRemote());
ret.setReference(updateReference.getReference());
ret.setLeftElement(leftBase);
ret.setRightElement(rightBase);
setTargets(updateReference, ret);
ret.getHideElements().add(input);
ret.getRequires().add(input);
return ret;
}
@Override
public DiffElement getParentDiff(DiffElement input, EcoreUtil.CrossReferencer crossReferencer) {
final EObject right = ((UpdateReference)input).getRightElement();
final EObject rightBase = UMLUtil.getBaseElement(right);
final DiffModel rootDiffGroup = (DiffModel)EcoreUtil.getRootContainer(input);
return findOrCreateDiffGroup(rootDiffGroup, rightBase, crossReferencer);
}
/**
* Sets the target of the given reference (The generic diff engine finds a target in the model, but
* stereotype values and features should apply to the "base" element of a diff).
*
* @param updateReference
* {@link UpdateReference} from DiffModel.
* @param ret
* {@link UpdateReference} which will be modified and return.
* @see UMLUtil#getBaseElement(EObject)
*/
protected void setTargets(final UpdateReference updateReference, final UpdateReference ret) {
final EStructuralFeature reference = updateReference.getReference();
final EObject rightTarget = updateReference.getRightTarget();
final EObject rightTargetBase = UMLUtil.getBaseElement(rightTarget);
if (rightTargetBase != null && rightTargetBase.eGet(reference) != null) {
ret.setRightTarget(rightTargetBase);
} else {
ret.setRightTarget(rightTarget);
}
final EObject leftTarget = updateReference.getLeftTarget();
final EObject leftTargetBase = UMLUtil.getBaseElement(leftTarget);
if (leftTargetBase != null && leftTargetBase.eGet(reference) != null) {
ret.setLeftTarget(leftTargetBase);
} else {
ret.setLeftTarget(leftTarget);
}
}
}
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