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/**
* Copyright (c) 2004 - 2009 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.internal.cdo.view;
import org.eclipse.emf.cdo.common.protocol.CDOProtocolConstants;
import org.eclipse.emf.cdo.eresource.CDOResource;
import org.eclipse.emf.cdo.eresource.CDOResourceFactory;
import org.eclipse.emf.cdo.view.CDOView;
import org.eclipse.emf.internal.cdo.messages.Messages;
import org.eclipse.emf.common.notify.Notification;
import org.eclipse.emf.common.notify.Notifier;
import org.eclipse.emf.common.notify.impl.NotificationImpl;
import org.eclipse.emf.common.notify.impl.NotifierImpl;
import org.eclipse.emf.ecore.EPackage;
import org.eclipse.emf.ecore.resource.Resource;
import org.eclipse.emf.ecore.resource.ResourceSet;
import org.eclipse.emf.ecore.resource.Resource.Factory.Registry;
import org.eclipse.emf.spi.cdo.InternalCDOView;
import org.eclipse.emf.spi.cdo.InternalCDOViewSet;
import java.text.MessageFormat;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.HashSet;
import java.util.List;
import java.util.Map;
import java.util.Set;
/**
* @author Simon McDuff
* @since 2.0
*/
public class CDOViewSetImpl extends NotifierImpl implements InternalCDOViewSet
{
private Set<InternalCDOView> views = new HashSet<InternalCDOView>();
private Map<String, InternalCDOView> mapOfViews = new HashMap<String, InternalCDOView>();
private CDOResourceFactory resourceFactory = CDOResourceFactory.eINSTANCE;
private CDOViewSetPackageRegistryImpl packageRegistry;
private ResourceSet resourceSet;
public CDOViewSetImpl()
{
}
public ResourceSet getResourceSet()
{
return resourceSet;
}
public EPackage.Registry getPackageRegistry()
{
return packageRegistry;
}
public CDOResourceFactory getResourceFactory()
{
return resourceFactory;
}
public CDOView[] getViews()
{
synchronized (views)
{
return views.toArray(new CDOView[views.size()]);
}
}
/**
* @throws IllegalArgumentException
* if repositoryUUID doesn't match any CDOView.
*/
public InternalCDOView resolveView(String repositoryUUID)
{
InternalCDOView view = null;
synchronized (views)
{
view = mapOfViews.get(repositoryUUID);
if (view == null)
{
if (repositoryUUID != null)
{
throw new IllegalArgumentException(MessageFormat.format(
Messages.getString("CDOViewSetImpl.0"), repositoryUUID)); //$NON-NLS-1$
}
if (mapOfViews.size() == 1)
{
return views.iterator().next();
}
if (mapOfViews.size() == 0)
{
return null;
}
throw new IllegalStateException(Messages.getString("CDOViewSetImpl.1")); //$NON-NLS-1$
}
}
return view;
}
public InternalCDOView getView(String repositoryUUID)
{
synchronized (views)
{
return mapOfViews.get(repositoryUUID);
}
}
public void add(InternalCDOView view)
{
String repositoryUUID = view.getSession().repository().getUUID();
synchronized (views)
{
CDOView lookupView = mapOfViews.get(repositoryUUID);
if (lookupView != null)
{
throw new RuntimeException(Messages.getString("CDOViewSetImpl.2")); //$NON-NLS-1$
}
views.add(view);
mapOfViews.put(repositoryUUID, view);
}
if (eNotificationRequired())
{
NotificationImpl notification = new NotificationImpl(NotificationImpl.ADD, null, view);
eNotify(notification);
}
}
public void remove(InternalCDOView view)
{
String repositoryUUID = view.getSession().repository().getUUID();
List<Resource> resToRemove = new ArrayList<Resource>();
synchronized (views)
{
// It is important to remove view from the list first. It is the way we can differentiate close and detach.
views.remove(view);
mapOfViews.remove(repositoryUUID);
for (Resource resource : getResourceSet().getResources())
{
if (resource instanceof CDOResource)
{
CDOResource cdoRes = (CDOResource)resource;
if (cdoRes.cdoView() == view)
{
resToRemove.add(resource);
}
}
}
}
getResourceSet().getResources().removeAll(resToRemove);
if (eNotificationRequired())
{
NotificationImpl notification = new NotificationImpl(NotificationImpl.REMOVE, view, null);
eNotify(notification);
}
}
public Notifier getTarget()
{
return resourceSet;
}
public void setTarget(Notifier newTarget)
{
if (!isAdapterForType(newTarget))
{
throw new IllegalArgumentException(MessageFormat.format(Messages.getString("CDOViewSetImpl.3"), newTarget)); //$NON-NLS-1$
}
if (resourceSet != null)
{
throw new IllegalStateException(Messages.getString("CDOViewSetImpl.4")); //$NON-NLS-1$
}
resourceSet = (ResourceSet)newTarget;
EPackage.Registry oldPackageRegistry = resourceSet.getPackageRegistry();
packageRegistry = new CDOViewSetPackageRegistryImpl(this, oldPackageRegistry);
resourceSet.setPackageRegistry(packageRegistry);
Registry registry = resourceSet.getResourceFactoryRegistry();
Map<String, Object> map = registry.getProtocolToFactoryMap();
map.put(CDOProtocolConstants.PROTOCOL_NAME, getResourceFactory());
}
public boolean isAdapterForType(Object type)
{
return type instanceof ResourceSet;
}
public void notifyChanged(Notification notification)
{
}
}
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