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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
**************************************************************************/
package org.eclipse.emf.cdo.internal.server;
import org.eclipse.emf.cdo.internal.server.bundle.OM;
import org.eclipse.emf.cdo.protocol.id.CDOID;
import org.eclipse.emf.cdo.server.IResourceManager;
import org.eclipse.emf.cdo.server.IStoreReader;
import org.eclipse.emf.cdo.server.StoreUtil;
import org.eclipse.net4j.internal.util.lifecycle.Lifecycle;
import org.eclipse.net4j.internal.util.om.trace.ContextTracer;
import java.util.HashMap;
import java.util.Map;
/**
* @author Eike Stepper
*/
public class ResourceManager extends Lifecycle implements IResourceManager
{
private static final ContextTracer TRACER = new ContextTracer(OM.DEBUG_SESSION, SessionManager.class);
private Repository repository;
private Map<CDOID, String> idToPathMap = new HashMap<CDOID, String>();
private Map<String, CDOID> pathToIDMap = new HashMap<String, CDOID>();
public ResourceManager(Repository repository)
{
this.repository = repository;
}
public Repository getRepository()
{
return repository;
}
public CDOID getResourceID(String path)
{
CDOID id = pathToIDMap.get(path);
if (id == null)
{
id = loadID(path);
if (id != null)
{
registerResource(id, path);
}
}
return id;
}
public String getResourcePath(CDOID id)
{
String path = idToPathMap.get(id);
if (path == null)
{
path = loadPath(id);
if (path != null)
{
registerResource(id, path);
}
}
return path;
}
public void registerResource(CDOID id, String path)
{
if (TRACER.isEnabled())
{
TRACER.format("Registering resource: {0} <--> {1}", id, path);
}
idToPathMap.put(id, path);
pathToIDMap.put(path, id);
}
private CDOID loadID(String path)
{
IStoreReader storeReader = StoreUtil.getReader();
return storeReader.readResourceID(path);
}
private String loadPath(CDOID id)
{
IStoreReader storeReader = StoreUtil.getReader();
return storeReader.readResourcePath(id);
}
}
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