/*******************************************************************************
* Copyright (c) 2005 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 API and implementation
*******************************************************************************/
package org.eclipse.bpel.common.extension.model.adapters.impl;
import org.eclipse.bpel.common.extension.model.Extension;
import org.eclipse.bpel.common.extension.model.ExtensionMap;
import org.eclipse.bpel.common.extension.model.impl.ExtensionImpl;
import org.eclipse.emf.common.notify.Notification;
import org.eclipse.emf.common.notify.impl.AdapterImpl;
/**
* This adapter is associated to Extension objects. It's job is to perform the
* appropriate clean up if any of the the adapted Extension object features are
* changed. It is a stateless adapter.
*/
public class ExtensionAdapterImpl extends AdapterImpl {
/**
* Constructor for ExtensionAdapterImpl.
*/
public ExtensionAdapterImpl() {
super();
}
/**
* @see org.eclipse.emf.common.notify.Adapter#notifyChanged(org.eclipse.emf.common.notify.Notification)
*/
@Override
public void notifyChanged(Notification notification) {
switch (notification.getEventType()) {
case Notification.SET : // either the extendedObject or extensionObject was changed.
// need to eliminate this extension object from the ExtensionMap. If, both the extendedObject
// and extensionObjects are null and the Extension is cointained by the ExtensionMap then
// remove it form the list.
Extension extension = (Extension) notification.getNotifier();
if(extension.getExtendedObject() == null && extension.getExtensionObject() == null &&
extension.eContainer() != null){
ExtensionMap extensionSet = (ExtensionMap)extension.eContainer();
if(extensionSet != null && extensionSet.getExtensions().contains(extension))
extensionSet.getExtensions().remove(extension);
}
// If the extendedObject is not null set it to null now
if (extension.getExtendedObject() != null)
extension.setExtendedObject(null);
// If the extensionObject is not null set it to null now
if (extension.getExtensionObject() != null)
extension.setExtensionObject(null);
break;
default :
break;
}
}
/**
* @see org.eclipse.emf.common.notify.Adapter#isAdapterForType(java.lang.Object)
*/
@Override
public boolean isAdapterForType(Object type) {
return ExtensionImpl.class.equals(type);
}
}