| /* |
| * Copyright (c) 2005, 2007 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 - initial API and implementation |
| * |
| * $Id: DerivedSubsetEObjectEList.java,v 1.10 2007/05/24 02:46:26 khussey Exp $ |
| */ |
| package org.eclipse.uml2.common.util; |
| |
| import java.util.ConcurrentModificationException; |
| import java.util.List; |
| import java.util.ListIterator; |
| |
| import org.eclipse.emf.ecore.EStructuralFeature; |
| import org.eclipse.emf.ecore.InternalEObject; |
| import org.eclipse.emf.ecore.util.FeatureMapUtil; |
| import org.eclipse.emf.ecore.util.InternalEList; |
| |
| /** |
| * A modifiable derived list whose values are obtained from a single multivalued |
| * source feature. This list is ideal for implementing derived subset features. |
| * |
| * @since 1.2 |
| */ |
| public class DerivedSubsetEObjectEList<E> |
| extends DerivedEObjectEList<E> { |
| |
| protected class DerivedSubsetListIterator |
| extends DerivedListIterator { |
| |
| protected int expectedModCount = modCount; |
| |
| @Override |
| public void remove() { |
| checkModCount(); |
| |
| if (valuesIterator == null) { |
| throw new IllegalStateException(); |
| } |
| |
| switch (prepared) { |
| case 3 : |
| case 1 : |
| preparePrevious(); |
| break; |
| case -1 : |
| case -3 : |
| prepareNext(); |
| break; |
| } |
| |
| prepared = 0; |
| |
| valuesIterator.remove(); |
| |
| modCount++; |
| expectedModCount++; |
| } |
| |
| @Override |
| public void set(Object element) { |
| checkModCount(); |
| |
| if (valuesIterator == null) { |
| throw new IllegalStateException(); |
| } |
| |
| switch (prepared) { |
| case 3 : |
| case 1 : |
| preparePrevious(); |
| break; |
| case -1 : |
| case -3 : |
| prepareNext(); |
| break; |
| } |
| |
| prepared = 0; |
| |
| valuesIterator.set(element); |
| |
| modCount++; |
| expectedModCount++; |
| } |
| |
| @Override |
| public void add(Object element) { |
| checkModCount(); |
| |
| if (valuesIterator == null) { |
| @SuppressWarnings("unchecked") |
| List<Object> valuesList = resolve() |
| ? (List<Object>) owner.eGet(sourceFeatureIDs[featureIndex], |
| resolve(), true) |
| : ((InternalEList<Object>) owner.eGet( |
| sourceFeatureIDs[featureIndex], resolve(), true)) |
| .basicList(); |
| |
| valuesList.listIterator(valuesList.size()).add(element); |
| } else { |
| |
| switch (prepared) { |
| case 3 : |
| preparePrevious(); |
| break; |
| case -3 : |
| prepareNext(); |
| break; |
| } |
| |
| valuesIterator.add(element); |
| } |
| |
| prepared = 0; |
| |
| modCount++; |
| expectedModCount++; |
| |
| index++; |
| } |
| |
| protected void checkModCount() { |
| |
| if (modCount != expectedModCount) { |
| throw new ConcurrentModificationException(); |
| } |
| } |
| } |
| |
| protected class ResolvingDerivedSubsetListIterator |
| extends DerivedSubsetListIterator { |
| |
| @Override |
| protected boolean resolve() { |
| return true; |
| } |
| |
| } |
| |
| protected class EmptyDerivedSubsetListIterator |
| extends EmptyDerivedListIterator { |
| |
| @Override |
| public void remove() { |
| throw new IllegalStateException(); |
| } |
| |
| @Override |
| public void set(Object element) { |
| throw new IllegalStateException(); |
| } |
| |
| @Override |
| public void add(Object element) { |
| throw new IllegalStateException(); |
| } |
| |
| } |
| |
| public DerivedSubsetEObjectEList(Class<?> dataClass, InternalEObject owner, |
| int featureID, int[] sourceFeatureIDs) { |
| super(dataClass, owner, featureID, sourceFeatureIDs); |
| |
| EStructuralFeature feature = sourceFeatureIDs.length == 1 |
| ? getEStructuralFeature(sourceFeatureIDs[0]) |
| : null; |
| |
| if (feature == null || !feature.isMany() |
| || FeatureMapUtil.isFeatureMap(feature)) { |
| |
| throw new IllegalArgumentException(String.valueOf(sourceFeatureIDs)); |
| } |
| } |
| |
| public DerivedSubsetEObjectEList(Class<?> dataClass, InternalEObject owner, |
| int featureID, int sourceFeatureID) { |
| this(dataClass, owner, featureID, new int[]{sourceFeatureID}); |
| } |
| |
| @Override |
| public List<E> basicList() { |
| |
| return new DerivedSubsetEObjectEList<E>(dataClass, owner, featureID, |
| sourceFeatureIDs) { |
| |
| @Override |
| public ListIterator<E> listIterator(int index) { |
| return basicListIterator(index); |
| } |
| }; |
| } |
| |
| @Override |
| protected ListIterator<E> newListIterator() { |
| return new DerivedSubsetListIterator(); |
| } |
| |
| @Override |
| protected ListIterator<E> newResolvingListIterator() { |
| return new ResolvingDerivedSubsetListIterator(); |
| } |
| |
| @Override |
| protected ListIterator<E> newEmptyListIterator() { |
| return new EmptyDerivedSubsetListIterator(); |
| } |
| |
| @Override |
| protected boolean isNotificationRequired() { |
| return owner.eNotificationRequired(); |
| } |
| |
| } |