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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.cdo.eresource.impl;
import org.eclipse.emf.cdo.eresource.CDOResourceFactory;
import org.eclipse.emf.cdo.eresource.EresourceFactory;
import org.eclipse.emf.cdo.protocol.util.ImplementationError;
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
{
// @Singleton
public static final CDOResourceFactoryImpl INSTANCE = new CDOResourceFactoryImpl();
private static final String RESOURCE_SET_CLASS_NAME = ResourceSetImpl.class.getName();
public CDOResourceFactoryImpl()
{
}
public Resource createResource(URI uri)
{
CDOResourceImpl resource = (CDOResourceImpl)EresourceFactory.eINSTANCE.createCDOResource();
resource.setURI(uri);
resource.setExisting(isExistingResource());
return resource;
}
private boolean isExistingResource()
{
StackTraceElement[] elements = Thread.currentThread().getStackTrace();
if (elements.length >= 6)
{
if (isResourceSetMethod(elements[6], "getResource"))
{
return true;
}
if (isResourceSetMethod(elements[4], "createResource"))
{
return false;
}
}
throw new ImplementationError("Call stack is in unexpected state");
}
private boolean isResourceSetMethod(StackTraceElement element, String methodName)
{
return methodName.equals(element.getMethodName()) && RESOURCE_SET_CLASS_NAME.equals(element.getClassName());
}
}
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