| //------------------------------------------------------------------------------ |
| // Copyright (c) 2005, 2006 IBM Corporation 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: |
| // IBM Corporation - initial implementation |
| //------------------------------------------------------------------------------ |
| package org.eclipse.epf.uma.ecore.util; |
| |
| import java.util.Iterator; |
| import java.util.List; |
| |
| import org.eclipse.emf.common.notify.impl.NotificationImpl; |
| import org.eclipse.emf.common.notify.impl.NotifyingListImpl; |
| import org.eclipse.emf.ecore.EObject; |
| import org.eclipse.emf.ecore.InternalEObject; |
| |
| /** |
| * A list for resolving multi-valued opposite features. |
| * |
| * @author Phong Nguyen Le |
| * @since 1.0 |
| */ |
| public class OppositeFeatureResolvingEList extends NotifyingListImpl<EObject> { |
| |
| private static final long serialVersionUID = 3690198763000051768L; |
| |
| private InternalEObject owner; |
| |
| private OppositeFeature oppositeFeature; |
| |
| /** |
| * Creates a new instance. |
| * |
| * @param owner |
| * the owner of an opposite feature |
| * @param oppositeFeature |
| * an opposite feature |
| */ |
| public OppositeFeatureResolvingEList(EObject owner, |
| OppositeFeature oppositeFeature) { |
| super(); |
| this.owner = (InternalEObject) owner; |
| this.oppositeFeature = oppositeFeature; |
| } |
| |
| /** |
| * @see org.eclipse.emf.common.notify.impl.NotifyingListImpl#getNotifier() |
| */ |
| public Object getNotifier() { |
| return owner; |
| } |
| |
| protected EObject resolveProxy(EObject eObject) { |
| return eObject.eIsProxy() ? owner |
| .eResolveProxy((InternalEObject) eObject) : eObject; |
| } |
| |
| protected NotificationImpl createNotification(int eventType, |
| Object oldObject, Object newObject, int index, boolean wasSet) { |
| return new OppositeFeatureNotification(owner, eventType, |
| oppositeFeature, oldObject, newObject, index, wasSet); |
| } |
| |
| protected boolean isNotificationRequired() { |
| return owner.eNotificationRequired(); |
| } |
| |
| protected EObject resolve(int index, EObject object) { |
| if (!(object instanceof EObject)) |
| return object; |
| EObject eObject = (EObject) object; |
| EObject resolved = resolveProxy(eObject); |
| if (resolved != eObject) { |
| Object oldObject = data[index]; |
| assign(index, validate(index, resolved)); |
| |
| didSet(index, resolved, (EObject) oldObject); |
| |
| // if (isNotificationRequired()) |
| // { |
| // owner.eNotify(createNotification(Notification.RESOLVE, eObject, |
| // resolved, index, false)); |
| // } |
| |
| return resolved; |
| } else { |
| return eObject; |
| } |
| |
| } |
| |
| protected void removeDanglingObjects() { |
| for (Iterator<EObject> iter = iterator(); iter.hasNext();) { |
| EObject obj = iter.next(); |
| if (obj.eResource() == null) { |
| iter.remove(); |
| } |
| } |
| } |
| |
| /** |
| * Returns an unmodifiable list that stores the opposite feature values. |
| * |
| * @return an unmodifiable list |
| */ |
| public List<?> getUnmodifiableList() { |
| removeDanglingObjects(); |
| return new UnmodifiableEList(size, data); |
| } |
| |
| } |