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/***************************************************************************
* Copyright (c) 2004 - 2008 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
* Simon McDuff - http://bugs.eclipse.org/213402
* Simon McDuff - http://bugs.eclipse.org/246705
**************************************************************************/
package org.eclipse.emf.cdo.eresource.impl;
import org.eclipse.emf.cdo.CDOViewSet;
import org.eclipse.emf.cdo.eresource.CDOResourceFactory;
import org.eclipse.emf.cdo.eresource.EresourceFactory;
import org.eclipse.emf.cdo.util.CDOURIUtil;
import org.eclipse.emf.internal.cdo.CDOViewImpl;
import org.eclipse.emf.internal.cdo.CDOViewSetImpl;
import org.eclipse.emf.common.util.URI;
import org.eclipse.emf.ecore.resource.Resource;
import org.eclipse.emf.ecore.resource.impl.ResourceSetImpl;
/**
* @author Eike Stepper
*/
public class CDOResourceFactoryImpl implements Resource.Factory, CDOResourceFactory
{
private static final String RESOURCE_SET_CLASS_NAME = ResourceSetImpl.class.getName();
/**
* @since 2.0
*/
private CDOViewSetImpl viewSet;
/**
* @since 2.0
*/
public CDOResourceFactoryImpl(CDOViewSet viewSet)
{
this.viewSet = (CDOViewSetImpl)viewSet;
}
public Resource createResource(URI uri)
{
CDOResourceImpl resource = (CDOResourceImpl)EresourceFactory.eINSTANCE.createCDOResource();
// URI can be invalid or incomplete. Extract repo + resource path and build a new URI.
String repositoryUUID = CDOURIUtil.extractRepositoryUUID(uri);
// repoUUID can be null but can be null
CDOViewImpl view = viewSet.resolveView(repositoryUUID);
String path = CDOURIUtil.extractResourcePath(uri);
// Build a new URI with the view and the path
URI newURI = CDOURIUtil.createResourceURI(view, path);
// Important: Set URI *after* registration with the view!
resource.setURI(newURI);
resource.setExisting(isGetResource());
return resource;
}
/**
* TODO Add TCs to ensure that Ecore internally doesn't change the way the stack is used!!!
*/
private boolean isGetResource()
{
boolean inResourceSet = false;
StackTraceElement[] elements = Thread.currentThread().getStackTrace();
for (int i = 3; i < elements.length; i++)
{
StackTraceElement element = elements[i];
if (RESOURCE_SET_CLASS_NAME.equals(element.getClassName()))
{
inResourceSet = true;
}
else
{
if (inResourceSet)
{
break;
}
}
if (inResourceSet && "getResource".equals(element.getMethodName()))
{
return true;
}
}
return false;
}
}
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