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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 - maintenance
**************************************************************************/
package org.eclipse.emf.internal.cdo;
import org.eclipse.emf.cdo.CDOSessionPackageManager;
import org.eclipse.emf.cdo.common.id.CDOIDMetaRange;
import org.eclipse.emf.cdo.common.id.CDOIDObjectFactory;
import org.eclipse.emf.cdo.common.model.CDOClass;
import org.eclipse.emf.cdo.common.model.CDOFeature;
import org.eclipse.emf.cdo.common.model.CDOModelUtil;
import org.eclipse.emf.cdo.common.model.CDOPackage;
import org.eclipse.emf.cdo.common.model.CDOPackageInfo;
import org.eclipse.emf.cdo.common.util.TransportException;
import org.eclipse.emf.cdo.internal.common.model.CDOPackageManagerImpl;
import org.eclipse.emf.cdo.util.CDOEMFUtil;
import org.eclipse.emf.internal.cdo.bundle.OM;
import org.eclipse.emf.internal.cdo.protocol.LoadPackageRequest;
import org.eclipse.emf.internal.cdo.util.ModelUtil;
import org.eclipse.net4j.signal.failover.IFailOverStrategy;
import org.eclipse.emf.ecore.EClass;
import org.eclipse.emf.ecore.EPackage;
import org.eclipse.emf.ecore.EStructuralFeature;
import java.util.Collection;
import java.util.Map;
import java.util.concurrent.ConcurrentHashMap;
/**
* @author Eike Stepper
*/
public class CDOSessionPackageManagerImpl extends CDOPackageManagerImpl implements CDOSessionPackageManager
{
private CDOSessionImpl session;
/**
* For optimization only. Instead of doing 3 lookups we are doing only one.
* <p>
* We could apply the same strategy for CDOClass and CDOPackage, because this is an optimization it will be good to do
* it only if it proof to make a difference. CDOPackage doesn't need to do it since we will do one lookup anyway...
* otherwise we need to proof it is more efficient.
* <p>
* TODO Should we have a cache for CDOClass(to save 1 lookup), CDOPackage (doesn'T save any lookup) ? TODO A reverse
* lookup cache is it worth it ?
*/
private Map<EStructuralFeature, CDOFeature> featureCache = new ConcurrentHashMap<EStructuralFeature, CDOFeature>();
public CDOSessionPackageManagerImpl(CDOSessionImpl session)
{
this.session = session;
ModelUtil.addModelInfos(this);
}
public CDOSessionImpl getSession()
{
return session;
}
public CDOIDObjectFactory getCDOIDObjectFactory()
{
return session;
}
public CDOPackage convert(EPackage ePackage)
{
return ModelUtil.getCDOPackage(ePackage, this);
}
public CDOClass convert(EClass eClass)
{
return ModelUtil.getCDOClass(eClass, this);
}
public CDOFeature convert(EStructuralFeature eFeature)
{
return ModelUtil.getCDOFeature(eFeature, this);
}
public EPackage convert(CDOPackage cdoPackage)
{
return ModelUtil.getEPackage(cdoPackage, session.getPackageRegistry());
}
public EClass convert(CDOClass cdoClass)
{
return ModelUtil.getEClass(cdoClass, session.getPackageRegistry());
}
public EStructuralFeature convert(CDOFeature cdoFeature)
{
return ModelUtil.getEFeature(cdoFeature, session.getPackageRegistry());
}
/**
* TODO Simon: If we enhance all these convert methods like getCDOFeature I suggest to do it directly in convert and
* remove the corresdonding static methods from ModelUtil. Then always call through the interface.
*
* @since 2.0
*/
public CDOFeature getCDOFeature(EStructuralFeature eFeature)
{
// Do not synchronized since we don't mind putting the same CDOFeeature twice in the Map.
CDOFeature feature = featureCache.get(eFeature);
if (feature == null)
{
feature = ModelUtil.getCDOFeature(eFeature, this);
featureCache.put(eFeature, feature);
}
return feature;
}
public void addPackageProxies(Collection<CDOPackageInfo> packageInfos)
{
for (CDOPackageInfo info : packageInfos)
{
String packageURI = info.getPackageURI();
boolean dynamic = info.isDynamic();
CDOIDMetaRange metaIDRange = info.getMetaIDRange();
String parentURI = info.getParentURI();
CDOPackage proxy = CDOModelUtil.createProxyPackage(this, packageURI, dynamic, metaIDRange, parentURI);
addPackage(proxy);
session.getPackageRegistry().putPackageDescriptor(proxy);
}
}
@Override
protected void resolve(CDOPackage cdoPackage)
{
if (!cdoPackage.isDynamic())
{
String uri = cdoPackage.getPackageURI();
EPackage ePackage = session.getPackageRegistry().getEPackage(uri);
if (ePackage != null)
{
ModelUtil.initializeCDOPackage(ePackage, cdoPackage);
return;
}
}
try
{
IFailOverStrategy failOverStrategy = session.getFailOverStrategy();
LoadPackageRequest request = new LoadPackageRequest(session.getChannel(), cdoPackage);
failOverStrategy.send(request);
if (!cdoPackage.isDynamic())
{
OM.LOG.info("Dynamic package created for " + cdoPackage.getPackageURI());
}
}
catch (RuntimeException ex)
{
throw ex;
}
catch (Exception ex)
{
throw new TransportException(ex);
}
}
@Override
protected String provideEcore(CDOPackage cdoPackage)
{
EPackage ePackage = ModelUtil.getEPackage(cdoPackage, session.getPackageRegistry());
return CDOEMFUtil.ePackageToString(ePackage, session.getPackageRegistry());
}
}
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