| /* |
| * Copyright (c) 2010-2013, 2015 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: |
| * Eike Stepper - initial API and implementation |
| * Simon McDuff - bug 246705 |
| */ |
| package org.eclipse.emf.spi.cdo; |
| |
| import org.eclipse.emf.cdo.CDOObject; |
| import org.eclipse.emf.cdo.CDOState; |
| import org.eclipse.emf.cdo.common.revision.CDORevision; |
| import org.eclipse.emf.cdo.view.CDOView; |
| |
| import org.eclipse.emf.internal.cdo.CDOObjectImpl; |
| import org.eclipse.emf.internal.cdo.messages.Messages; |
| import org.eclipse.emf.internal.cdo.object.CDOLegacyAdapter; |
| |
| import org.eclipse.emf.common.notify.Adapter; |
| import org.eclipse.emf.common.util.EList; |
| import org.eclipse.emf.ecore.EObject; |
| import org.eclipse.emf.ecore.InternalEObject; |
| import org.eclipse.emf.ecore.util.EcoreUtil; |
| |
| import java.util.Collection; |
| import java.util.Iterator; |
| |
| /** |
| * If the meaning of this type isn't clear, there really should be more of a description here... |
| * |
| * @author Eike Stepper |
| * @since 4.0 |
| */ |
| public final class FSMUtil |
| { |
| private FSMUtil() |
| { |
| } |
| |
| public static boolean isTransient(CDOObject object) |
| { |
| CDOState state = object.cdoState(); |
| return state == CDOState.TRANSIENT || state == CDOState.PREPARED; |
| } |
| |
| public static boolean isInvalid(CDOObject object) |
| { |
| CDOState state = object.cdoState(); |
| return state == CDOState.INVALID || state == CDOState.INVALID_CONFLICT; |
| } |
| |
| public static boolean isConflict(CDOObject object) |
| { |
| CDOState state = object.cdoState(); |
| return state == CDOState.CONFLICT || state == CDOState.INVALID_CONFLICT; |
| } |
| |
| public static boolean isNew(CDOObject object) |
| { |
| CDOState state = object.cdoState(); |
| return state == CDOState.NEW; |
| } |
| |
| /** |
| * @since 4.1 |
| */ |
| public static boolean isClean(CDOObject object) |
| { |
| CDOState state = object.cdoState(); |
| return state == CDOState.CLEAN; |
| } |
| |
| public static boolean isNative(EObject eObject) |
| { |
| return eObject instanceof CDOObjectImpl; |
| } |
| |
| public static InternalCDOObject adapt(Object object, CDOView view) |
| { |
| if (view.isClosed()) |
| { |
| throw new IllegalStateException(Messages.getString("FSMUtil.0")); //$NON-NLS-1$ |
| } |
| |
| if (object instanceof InternalCDOObject) |
| { |
| return (InternalCDOObject)object; |
| } |
| |
| if (object == null) |
| { |
| throw new IllegalArgumentException(Messages.getString("FSMUtil.1")); //$NON-NLS-1$ |
| } |
| |
| if (object instanceof InternalEObject) |
| { |
| return adaptLegacy((InternalEObject)object); |
| } |
| |
| return null; |
| } |
| |
| /* |
| * IMPORTANT: Compile errors in this method might indicate an old version of EMF. Legacy support is only enabled for |
| * EMF with fixed bug #247130. These compile errors do not affect native models! |
| */ |
| public static InternalCDOObject adaptLegacy(InternalEObject object) |
| { |
| EList<Adapter> adapters = object.eAdapters(); |
| CDOLegacyAdapter adapter = (CDOLegacyAdapter)getLegacyAdapter(adapters); |
| if (adapter == null) |
| { |
| adapter = new CDOLegacyAdapter(object); |
| } |
| |
| return adapter; |
| |
| // EList<InternalEObject.EReadListener> readListeners = object.eReadListeners(); |
| // CDOLegacyWrapper wrapper = getLegacyWrapper(readListeners); |
| // if (wrapper == null) |
| // { |
| // wrapper = new CDOLegacyWrapper(object); |
| // // TODO Only Load/Attach transitions should actually *add* the wrappers! |
| // readListeners.add(0, wrapper); |
| // object.eWriteListeners().add(0, wrapper); |
| // } |
| // |
| // return wrapper; |
| } |
| |
| /** |
| * @since 4.4 |
| */ |
| public static Adapter getLegacyAdapter(EObject object) |
| { |
| return getLegacyAdapter(object.eAdapters()); |
| } |
| |
| /** |
| * @since 4.4 |
| */ |
| public static Adapter getLegacyAdapter(EList<Adapter> adapters) |
| { |
| return EcoreUtil.getAdapter(adapters, CDOLegacyAdapter.class); |
| } |
| |
| public static Iterator<InternalCDOObject> iterator(final Iterator<?> delegate, final InternalCDOView view) |
| { |
| return new Iterator<InternalCDOObject>() |
| { |
| private Object next; |
| |
| public boolean hasNext() |
| { |
| if (delegate.hasNext()) |
| { |
| next = adapt(delegate.next(), view); |
| return true; |
| } |
| |
| return false; |
| } |
| |
| public InternalCDOObject next() |
| { |
| return (InternalCDOObject)next; |
| } |
| |
| public void remove() |
| { |
| throw new UnsupportedOperationException(); |
| } |
| }; |
| } |
| |
| public static Iterator<InternalCDOObject> iterator(Collection<?> instances, final InternalCDOView view) |
| { |
| return iterator(instances.iterator(), view); |
| } |
| |
| /** |
| * @since 4.3 |
| */ |
| public static String toString(Object object) |
| { |
| if (object instanceof CDOObject) |
| { |
| CDOObject cdoObject = (CDOObject)object; |
| |
| CDORevision revision = cdoObject.cdoRevision(); |
| if (revision != null) |
| { |
| String string = revision.toString(); |
| |
| CDOState cdoState = cdoObject.cdoState(); |
| if (cdoState != CDOState.CLEAN) |
| { |
| string += "[" + cdoState + "]"; |
| } |
| |
| return string; |
| } |
| } |
| |
| return String.valueOf(object); |
| } |
| } |