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/***************************************************************************
* Copyright (c) 2004 - 2007 Eike Stepper, Germany.
* 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
**************************************************************************/
package org.eclipse.emf.internal.cdo;
import org.eclipse.emf.cdo.CDOState;
import org.eclipse.emf.cdo.protocol.CDOProtocolConstants;
import org.eclipse.net4j.internal.util.om.trace.ContextTracer;
import org.eclipse.emf.common.notify.Adapter;
import org.eclipse.emf.common.notify.Notification;
import org.eclipse.emf.common.notify.Notifier;
import org.eclipse.emf.common.util.URI;
import org.eclipse.emf.ecore.InternalEObject;
import org.eclipse.emf.internal.cdo.bundle.OM;
/**
* @author Eike Stepper
*/
public class CDOAdapterImpl extends CDOLegacyImpl implements Adapter.Internal
{
private static final ContextTracer TRACER = new ContextTracer(OM.DEBUG_OBJECT, CDOAdapterImpl.class);
public CDOAdapterImpl()
{
}
public boolean isAdapterForType(Object type)
{
return type == CDOAdapterImpl.class;
}
public InternalEObject getTarget()
{
return instance;
}
public void setTarget(Notifier newTarget)
{
if (newTarget instanceof InternalEObject)
{
instance = (InternalEObject)newTarget;
}
else
{
throw new IllegalArgumentException("Not an InternalEObject: " + newTarget.getClass().getName());
}
}
public void unsetTarget(Notifier oldTarget)
{
if (oldTarget instanceof InternalEObject)
{
if (instance == oldTarget)
{
instance = null;
}
}
else
{
throw new IllegalArgumentException("Not an InternalEObject: " + oldTarget.getClass().getName());
}
}
public void notifyChanged(Notification msg)
{
switch (msg.getEventType())
{
case Notification.ADD:
case Notification.ADD_MANY:
case Notification.REMOVE:
case Notification.REMOVE_MANY:
case Notification.MOVE:
case Notification.SET:
case Notification.UNSET:
InternalEObject notifier = (InternalEObject)msg.getNotifier();
if (notifier == instance && !notifier.eIsProxy())
{
CDOStateMachine.INSTANCE.write(this);
}
}
}
@Override
public CDOState cdoInternalSetState(CDOState state)
{
CDOState oldState = super.cdoInternalSetState(state);
if (oldState != state)
{
if (state == CDOState.PROXY)
{
if (!instance.eIsProxy())
{
URI uri = URI.createURI(CDOProtocolConstants.PROTOCOL_NAME + ":proxy#" + id);
if (TRACER.isEnabled())
{
TRACER.format("Setting proxyURI {0} for {1}", uri, instance);
}
instance.eSetProxyURI(uri);
}
}
else
{
if (instance.eIsProxy())
{
if (TRACER.isEnabled())
{
TRACER.format("Unsetting proxyURI for {1}", instance);
}
instance.eSetProxyURI(null);
}
}
}
return oldState;
}
/**
* This implementation simply asks the view to convert the ID which can result
* in a LoadObjectRequest being sent. Basically this leads to loading the
* whole subtree (i.e. resource). TODO Investigate the use of proxies here
*
* @see CDOCallbackImpl
*/
@Override
protected Object convertPotentialID(CDOViewImpl view, Object potentialID)
{
return view.convertIDToObject(potentialID);
}
}
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