| /* |
| * Copyright (c) 2008-2013 Eike Stepper (Berlin, Germany) 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: |
| * Simon McDuff - initial API and implementation |
| * Eike Stepper - maintenance |
| */ |
| package org.eclipse.emf.cdo.internal.common.revision; |
| |
| import org.eclipse.emf.cdo.common.model.CDOModelUtil; |
| import org.eclipse.emf.cdo.common.model.CDOType; |
| import org.eclipse.emf.cdo.common.revision.CDOList; |
| import org.eclipse.emf.cdo.common.revision.CDOListFactory; |
| import org.eclipse.emf.cdo.spi.common.revision.CDOReferenceAdjuster; |
| import org.eclipse.emf.cdo.spi.common.revision.InternalCDOList; |
| |
| import org.eclipse.emf.common.util.BasicEList; |
| import org.eclipse.emf.ecore.EClassifier; |
| import org.eclipse.emf.ecore.EStructuralFeature; |
| |
| import java.util.Collection; |
| |
| /** |
| * @author Simon McDuff |
| */ |
| public class CDOListImpl extends BasicEList<Object>implements InternalCDOList.ConfigurableEquality |
| { |
| public static final CDOListFactory FACTORY = new CDOListFactory() |
| { |
| public CDOList createList(int initialCapacity, int size, int initialChunk) |
| { |
| return new CDOListImpl(initialCapacity, size); |
| } |
| }; |
| |
| private static final byte FROZEN_FLAG = 1; |
| |
| private static final byte USE_EQUALS_FLAG = 2; |
| |
| private static final long serialVersionUID = 1L; |
| |
| private transient byte flags = USE_EQUALS_FLAG; |
| |
| public CDOListImpl(int initialCapacity, int size) |
| { |
| super(initialCapacity); |
| for (int j = 0; j < size; j++) |
| { |
| this.add(UNINITIALIZED); |
| } |
| } |
| |
| public InternalCDOList clone(EClassifier classifier) |
| { |
| CDOType type = CDOModelUtil.getType(classifier); |
| int size = size(); |
| |
| CDOListImpl list = new CDOListImpl(size, 0); |
| list.setUseEquals(useEquals()); |
| |
| for (int j = 0; j < size; j++) |
| { |
| Object value = this.get(j); |
| list.add(j, type.copyValue(value)); |
| } |
| |
| return list; |
| } |
| |
| public Object get(int index, boolean resolve) |
| { |
| return super.get(index); |
| } |
| |
| /** |
| * There's a duplicate of this method in WrappedHibernateList!!! |
| */ |
| public boolean adjustReferences(CDOReferenceAdjuster revisionAdjuster, EStructuralFeature feature) |
| { |
| boolean changed = false; |
| CDOType type = CDOModelUtil.getType(feature); |
| int size = size(); |
| for (int i = 0; i < size; i++) |
| { |
| Object element = super.get(i); |
| handleAdjustReference(i, element); |
| Object newID = type.adjustReferences(revisionAdjuster, element, feature, i); |
| if (newID != element) // Just an optimization for NOOP adjusters |
| { |
| super.set(i, newID); |
| changed = true; |
| } |
| } |
| |
| return changed; |
| } |
| |
| protected void handleAdjustReference(int index, Object element) |
| { |
| } |
| |
| public void freeze() |
| { |
| flags |= FROZEN_FLAG; |
| } |
| |
| private void checkFrozen() |
| { |
| if ((flags & FROZEN_FLAG) != 0) |
| { |
| throw new IllegalStateException("Cannot modify a frozen list"); |
| } |
| } |
| |
| @Override |
| public boolean add(Object o) |
| { |
| checkFrozen(); |
| return super.add(o); |
| } |
| |
| @Override |
| public boolean remove(Object o) |
| { |
| checkFrozen(); |
| return super.remove(o); |
| } |
| |
| @Override |
| public boolean addAll(Collection<? extends Object> c) |
| { |
| checkFrozen(); |
| return super.addAll(c); |
| } |
| |
| @Override |
| public boolean addAll(int index, Collection<? extends Object> c) |
| { |
| checkFrozen(); |
| return super.addAll(index, c); |
| } |
| |
| @Override |
| public boolean removeAll(Collection<?> c) |
| { |
| checkFrozen(); |
| return super.removeAll(c); |
| } |
| |
| @Override |
| public boolean retainAll(Collection<?> c) |
| { |
| checkFrozen(); |
| return super.retainAll(c); |
| } |
| |
| @Override |
| public void clear() |
| { |
| checkFrozen(); |
| super.clear(); |
| } |
| |
| @Override |
| public Object set(int index, Object element) |
| { |
| checkFrozen(); |
| return super.set(index, element); |
| } |
| |
| @Override |
| public void add(int index, Object element) |
| { |
| checkFrozen(); |
| super.add(index, element); |
| } |
| |
| @Override |
| public Object remove(int index) |
| { |
| checkFrozen(); |
| return super.remove(index); |
| } |
| |
| public void setWithoutFrozenCheck(int index, Object element) |
| { |
| super.set(index, element); |
| } |
| |
| @Override |
| public final boolean useEquals() |
| { |
| return (flags & USE_EQUALS_FLAG) != 0; |
| } |
| |
| public final void setUseEquals(boolean useEquals) |
| { |
| if (useEquals) |
| { |
| flags |= USE_EQUALS_FLAG; |
| } |
| else |
| { |
| flags &= ~USE_EQUALS_FLAG; |
| } |
| } |
| } |