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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:
* Simon McDuff - initial API and implementation
* Eike Stepper - maintenance
**************************************************************************/
package org.eclipse.emf.cdo.internal.server;
import org.eclipse.emf.cdo.internal.protocol.revision.InternalCDORevision;
import org.eclipse.emf.cdo.protocol.id.CDOID;
import org.eclipse.emf.cdo.protocol.model.CDOClassRef;
import org.eclipse.emf.cdo.protocol.model.CDOFeature;
import org.eclipse.emf.cdo.protocol.model.CDOPackage;
import org.eclipse.emf.cdo.protocol.model.CDOPackageInfo;
import org.eclipse.emf.cdo.protocol.revision.CDORevision;
import org.eclipse.emf.cdo.protocol.revision.CDORevisionUtil;
import org.eclipse.emf.cdo.protocol.revision.delta.CDORevisionDelta;
import org.eclipse.emf.cdo.server.ISession;
import org.eclipse.emf.cdo.server.IStoreChunkReader;
import org.eclipse.emf.cdo.server.IStoreReader;
import org.eclipse.emf.cdo.server.IStoreWriter;
import org.eclipse.emf.cdo.server.IView;
import org.eclipse.net4j.util.io.CloseableIterator;
import java.util.ArrayList;
import java.util.Collection;
import java.util.Collections;
import java.util.List;
/**
* @author Simon McDuff
*/
public class MEMStoreAccessor extends StoreAccessor implements IStoreReader, IStoreWriter
{
List<CDORevision> newRevisions = new ArrayList<CDORevision>();
public MEMStoreAccessor(MEMStore store, ISession session)
{
super(store, session);
}
public MEMStoreAccessor(MEMStore store, IView view)
{
super(store, view);
}
@Override
public MEMStore getStore()
{
return (MEMStore)super.getStore();
}
public IStoreChunkReader createChunkReader(CDORevision revision, CDOFeature feature)
{
return new MEMStoreChunkReader(this, revision, feature);
}
public Collection<CDOPackageInfo> readPackageInfos()
{
return Collections.emptySet();
}
public void readPackage(CDOPackage cdoPackage)
{
throw new UnsupportedOperationException();
}
public CloseableIterator<CDOID> readObjectIDs(boolean withTypes)
{
throw new UnsupportedOperationException();
}
public CDOClassRef readObjectType(CDOID id)
{
throw new UnsupportedOperationException();
}
public CDORevision readRevision(CDOID id, int referenceChunk)
{
InternalCDORevision storeRevision = (InternalCDORevision)getStore().getRevision(id);
// IRevisionManager revisionManager = getStore().getRepository().getRevisionManager();
// InternalCDORevision newRevision = new InternalCDORevision(revisionManager, storeRevision.getCDOClass(),
// storeRevision
// .getID());
// newRevision.setResourceID(storeRevision.getResourceID());
//
// for (CDOFeature feature : storeRevision.getCDOClass().getAllFeatures())
// {
// if (feature.isMany())
// {
// newRevision.setListSize(feature, storeRevision.getList(feature).size());
// MoveableList<Object> list = newRevision.getList(feature);
// int size = referenceChunk == CDORevision.UNCHUNKED ? list.size() : referenceChunk;
// for (int i = 0; i < size; i++)
// {
// list.set(i, storeRevision.get(feature, i));
// }
// }
// }
//
// return newRevision;
return storeRevision;
}
public CDORevision readRevisionByTime(CDOID id, int referenceChunk, long timeStamp)
{
throw new UnsupportedOperationException();
}
public CDORevision readRevisionByVersion(CDOID id, int referenceChunk, int version)
{
throw new UnsupportedOperationException();
}
public CDOID readResourceID(String path)
{
CDORevision revision = getStore().getResource(path);
return revision == null ? null : revision.getID();
}
public String readResourcePath(CDOID id)
{
throw new UnsupportedOperationException();
}
@Override
public void commit(CommitContext context)
{
MEMStore store = getStore();
synchronized (store)
{
super.commit(context);
}
}
@Override
public void rollback(CommitContext context)
{
MEMStore store = getStore();
synchronized (store)
{
super.rollback(context);
for (CDORevision revision : newRevisions)
{
store.removeRevision(revision);
}
}
}
@Override
protected void writePackages(CDOPackage... cdoPackages)
{
// Do nothing
}
@Override
protected void writeRevision(CDORevision revision)
{
newRevisions.add(revision);
getStore().addRevision(revision);
}
@Override
protected void writeRevisionDelta(CDORevisionDelta revisionDelta)
{
CDORevision revision = getStore().getRevision(revisionDelta.getID());
CDORevision newRevision = CDORevisionUtil.copy(revision);
revisionDelta.apply(newRevision);
writeRevision(newRevision);
}
@Override
protected void doRelease()
{
newRevisions.clear();
}
}
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