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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.internal.cdo;
import org.eclipse.emf.cdo.CDOObject;
import org.eclipse.emf.cdo.CDOView;
import org.eclipse.emf.cdo.internal.protocol.model.CDOFeatureImpl;
import org.eclipse.emf.cdo.internal.protocol.model.CDOPackageManagerImpl;
import org.eclipse.emf.cdo.internal.protocol.revision.CDORevisionImpl;
import org.eclipse.emf.cdo.protocol.CDOID;
import org.eclipse.emf.cdo.protocol.util.ImplementationError;
import org.eclipse.net4j.internal.util.om.trace.ContextTracer;
import org.eclipse.emf.ecore.EClass;
import org.eclipse.emf.ecore.EObject;
import org.eclipse.emf.ecore.EStructuralFeature;
import org.eclipse.emf.ecore.InternalEObject;
import org.eclipse.emf.ecore.InternalEObject.EStore;
import org.eclipse.emf.internal.cdo.bundle.CDO;
import org.eclipse.emf.internal.cdo.util.EMFUtil;
/**
* @author Eike Stepper
*/
public final class CDOStore implements EStore
{
// @Singleton
public static final CDOStore INSTANCE = new CDOStore();
private static final ContextTracer TRACER = new ContextTracer(CDO.DEBUG_OBJECT, CDOStore.class);
private CDOStore()
{
}
public InternalEObject getContainer(InternalEObject eObject)
{
CDOObjectImpl cdoObject = (CDOObjectImpl)eObject;
if (TRACER.isEnabled())
{
TRACER.format("getContainer({0})", cdoObject);
}
CDORevisionImpl revision = getRevisionForReading(cdoObject);
CDOID id = revision.getContainerID();
return (InternalEObject)convertToObject(cdoObject.cdoView(), id);
}
public int getContainingFeatureID(InternalEObject eObject)
{
CDOObjectImpl cdoObject = (CDOObjectImpl)eObject;
if (TRACER.isEnabled())
{
TRACER.format("getContainingFeatureID({0})", cdoObject);
}
CDORevisionImpl revision = getRevisionForReading(cdoObject);
return revision.getContainingFeatureID();
}
public void setContainer(InternalEObject eObject, InternalEObject newContainer, int newContainerFeatureID)
{
CDOObjectImpl cdoObject = (CDOObjectImpl)eObject;
if (TRACER.isEnabled())
{
TRACER.format("setContainer({0}, {1}, {2})", cdoObject, newContainer, newContainerFeatureID);
}
CDOID containerID = (CDOID)convertToID(cdoObject.cdoView(), newContainer);
CDORevisionImpl revision = getRevisionForWriting(cdoObject);
revision.setContainerID(containerID);
revision.setContainingFeature(newContainerFeatureID);
}
public EStructuralFeature getContainingFeature(InternalEObject eObject)
{
throw new UnsupportedOperationException("Use getContainingFeatureID() instead");
}
public Object get(InternalEObject eObject, EStructuralFeature eFeature, int index)
{
CDOObjectImpl cdoObject = (CDOObjectImpl)eObject;
CDOFeatureImpl cdoFeature = getCDOFeature(cdoObject, eFeature);
if (TRACER.isEnabled())
{
TRACER.format("get({0}, {1}, {2})", cdoObject, cdoFeature, index);
}
CDORevisionImpl revision = getRevisionForReading(cdoObject);
Object result = revision.get(cdoFeature, index);
if (cdoFeature.isReference())
{
result = convertToObject(cdoObject.cdoView(), result);
}
return result;
}
public boolean isSet(InternalEObject eObject, EStructuralFeature eFeature)
{
CDOObjectImpl cdoObject = (CDOObjectImpl)eObject;
CDOFeatureImpl cdoFeature = getCDOFeature(cdoObject, eFeature);
if (TRACER.isEnabled())
{
TRACER.format("isSet({0}, {1})", cdoObject, cdoFeature);
}
CDORevisionImpl revision = getRevisionForReading(cdoObject);
return revision.isSet(cdoFeature);
}
public int size(InternalEObject eObject, EStructuralFeature eFeature)
{
CDOObjectImpl cdoObject = (CDOObjectImpl)eObject;
CDOFeatureImpl cdoFeature = getCDOFeature(cdoObject, eFeature);
if (TRACER.isEnabled())
{
TRACER.format("size({0}, {1})", cdoObject, cdoFeature);
}
CDORevisionImpl revision = getRevisionForReading(cdoObject);
return revision.size(cdoFeature);
}
public boolean isEmpty(InternalEObject eObject, EStructuralFeature eFeature)
{
CDOObjectImpl cdoObject = (CDOObjectImpl)eObject;
CDOFeatureImpl cdoFeature = getCDOFeature(cdoObject, eFeature);
if (TRACER.isEnabled())
{
TRACER.format("isEmpty({0}, {1})", cdoObject, cdoFeature);
}
CDORevisionImpl revision = getRevisionForReading(cdoObject);
return revision.isEmpty(cdoFeature);
}
public boolean contains(InternalEObject eObject, EStructuralFeature eFeature, Object value)
{
CDOObjectImpl cdoObject = (CDOObjectImpl)eObject;
CDOFeatureImpl cdoFeature = getCDOFeature(cdoObject, eFeature);
if (TRACER.isEnabled())
{
TRACER.format("contains({0}, {1}, {2})", cdoObject, cdoFeature, value);
}
if (cdoFeature.isReference())
{
value = convertToID(cdoObject.cdoView(), value);
}
CDORevisionImpl revision = getRevisionForReading(cdoObject);
return revision.contains(cdoFeature, value);
}
public int indexOf(InternalEObject eObject, EStructuralFeature eFeature, Object value)
{
CDOObjectImpl cdoObject = (CDOObjectImpl)eObject;
CDOFeatureImpl cdoFeature = getCDOFeature(cdoObject, eFeature);
if (TRACER.isEnabled())
{
TRACER.format("indexOf({0}, {1}, {2})", cdoObject, cdoFeature, value);
}
if (cdoFeature.isReference())
{
value = convertToID(cdoObject.cdoView(), value);
}
CDORevisionImpl revision = getRevisionForReading(cdoObject);
return revision.indexOf(cdoFeature, value);
}
public int lastIndexOf(InternalEObject eObject, EStructuralFeature eFeature, Object value)
{
CDOObjectImpl cdoObject = (CDOObjectImpl)eObject;
CDOFeatureImpl cdoFeature = getCDOFeature(cdoObject, eFeature);
if (TRACER.isEnabled())
{
TRACER.format("lastIndexOf({0}, {1}, {2})", cdoObject, cdoFeature, value);
}
if (cdoFeature.isReference())
{
value = convertToID(cdoObject.cdoView(), value);
}
CDORevisionImpl revision = getRevisionForReading(cdoObject);
return revision.lastIndexOf(cdoFeature, value);
}
public int hashCode(InternalEObject eObject, EStructuralFeature eFeature)
{
CDOObjectImpl cdoObject = (CDOObjectImpl)eObject;
CDOFeatureImpl cdoFeature = getCDOFeature(cdoObject, eFeature);
if (TRACER.isEnabled())
{
TRACER.format("hashCode({0}, {1})", cdoObject, cdoFeature);
}
CDORevisionImpl revision = getRevisionForReading(cdoObject);
return revision.hashCode(cdoFeature);
}
public Object[] toArray(InternalEObject eObject, EStructuralFeature eFeature)
{
CDOObjectImpl cdoObject = (CDOObjectImpl)eObject;
CDOFeatureImpl cdoFeature = getCDOFeature(cdoObject, eFeature);
if (TRACER.isEnabled())
{
TRACER.format("toArray({0}, {1})", cdoObject, cdoFeature);
}
CDORevisionImpl revision = getRevisionForReading(cdoObject);
Object[] result = revision.toArray(cdoFeature);
if (cdoFeature.isReference())
{
for (int i = 0; i < result.length; i++)
{
result[i] = convertToObject(cdoObject.cdoView(), result[i]);
}
}
return result;
}
public <T> T[] toArray(InternalEObject eObject, EStructuralFeature eFeature, T[] array)
{
// TODO Implement method CDOStore.toArray()
throw new UnsupportedOperationException("Not yet implemented");
}
public Object set(InternalEObject eObject, EStructuralFeature eFeature, int index, Object value)
{
CDOObjectImpl cdoObject = (CDOObjectImpl)eObject;
CDOFeatureImpl cdoFeature = getCDOFeature(cdoObject, eFeature);
if (TRACER.isEnabled())
{
TRACER.format("set({0}, {1}, {2}, {3})", cdoObject, cdoFeature, index, value);
}
if (cdoFeature.isReference())
{
if (cdoFeature.isContainment())
{
handleContainmentAdd(cdoObject, cdoFeature, value);
}
value = convertToID(cdoObject.cdoView(), value);
}
CDORevisionImpl revision = getRevisionForWriting(cdoObject);
Object result = revision.set(cdoFeature, index, value);
if (cdoFeature.isReference())
{
result = convertToObject(cdoObject.cdoView(), result);
}
return result;
}
public void unset(InternalEObject eObject, EStructuralFeature eFeature)
{
CDOObjectImpl cdoObject = (CDOObjectImpl)eObject;
CDOFeatureImpl cdoFeature = getCDOFeature(cdoObject, eFeature);
if (TRACER.isEnabled())
{
TRACER.format("unset({0}, {1})", cdoObject, cdoFeature);
}
CDORevisionImpl revision = getRevisionForWriting(cdoObject);
revision.unset(cdoFeature);
}
public void add(InternalEObject eObject, EStructuralFeature eFeature, int index, Object value)
{
CDOObjectImpl cdoObject = (CDOObjectImpl)eObject;
CDOFeatureImpl cdoFeature = getCDOFeature(cdoObject, eFeature);
if (TRACER.isEnabled())
{
TRACER.format("add({0}, {1}, {2}, {3})", cdoObject, cdoFeature, index, value);
}
if (cdoFeature.isReference())
{
if (cdoFeature.isContainment())
{
handleContainmentAdd(cdoObject, cdoFeature, value);
}
value = convertToID(cdoObject.cdoView(), value);
}
CDORevisionImpl revision = getRevisionForWriting(cdoObject);
revision.add(cdoFeature, index, value);
}
public Object remove(InternalEObject eObject, EStructuralFeature eFeature, int index)
{
CDOObjectImpl cdoObject = (CDOObjectImpl)eObject;
CDOFeatureImpl cdoFeature = getCDOFeature(cdoObject, eFeature);
if (TRACER.isEnabled())
{
TRACER.format("remove({0}, {1}, {2})", cdoObject, cdoFeature, index);
}
CDORevisionImpl revision = getRevisionForWriting(cdoObject);
Object result = revision.remove(cdoFeature, index);
if (cdoFeature.isReference())
{
result = convertToObject(cdoObject.cdoView(), result);
}
return result;
}
public void clear(InternalEObject eObject, EStructuralFeature eFeature)
{
CDOObjectImpl cdoObject = (CDOObjectImpl)eObject;
CDOFeatureImpl cdoFeature = getCDOFeature(cdoObject, eFeature);
if (TRACER.isEnabled())
{
TRACER.format("clear({0}, {1})", cdoObject, cdoFeature);
}
CDORevisionImpl revision = getRevisionForWriting(cdoObject);
revision.clear(cdoFeature);
}
public Object move(InternalEObject eObject, EStructuralFeature eFeature, int target, int source)
{
CDOObjectImpl cdoObject = (CDOObjectImpl)eObject;
CDOFeatureImpl cdoFeature = getCDOFeature(cdoObject, eFeature);
if (TRACER.isEnabled())
{
TRACER.format("move({0}, {1}, {2}, {3})", cdoObject, cdoFeature, target, source);
}
CDORevisionImpl revision = getRevisionForWriting(cdoObject);
Object result = revision.move(cdoFeature, target, source);
if (cdoFeature.isReference())
{
result = convertToObject(cdoObject.cdoView(), result);
}
return result;
}
public EObject create(EClass eClass)
{
throw new UnsupportedOperationException("Use the generated factory to create objects");
}
@Override
public String toString()
{
return "PersistentStore";
}
public static Object convertToID(CDOView adapter, Object potentialObject)
{
if (potentialObject instanceof CDOObject)
{
CDOObject object = (CDOObject)potentialObject;
if (object.cdoView() == adapter)
{
return object.cdoID();
}
}
if (TRACER.isEnabled())
{
TRACER.format("Dangling reference: {0}", potentialObject);
}
return potentialObject;
}
/**
* TODO Move to adapter
*/
public static Object convertToObject(CDOView adapter, Object potentialID)
{
if (potentialID instanceof CDOID)
{
if (potentialID == CDOID.NULL)
{
return null;
}
CDOID id = (CDOID)potentialID;
CDOObject result = ((CDOViewImpl)adapter).lookupObject(id);
if (result == null)
{
throw new ImplementationError("ID not registered: " + id);
}
return result;
}
return potentialID;
}
private static CDOFeatureImpl getCDOFeature(CDOObjectImpl cdoObject, EStructuralFeature eFeature)
{
CDOViewImpl view = cdoObject.cdoView();
if (view == null)
{
throw new IllegalStateException("view == null");
}
CDOPackageManagerImpl packageManager = view.getSession().getPackageManager();
return EMFUtil.getCDOFeature(eFeature, packageManager);
}
private static CDORevisionImpl getRevisionForReading(CDOObjectImpl cdoObject)
{
CDOStateMachine.INSTANCE.read(cdoObject);
return getRevision(cdoObject);
}
private static CDORevisionImpl getRevisionForWriting(CDOObjectImpl cdoObject)
{
CDOStateMachine.INSTANCE.write(cdoObject);
return getRevision(cdoObject);
}
private static CDORevisionImpl getRevision(CDOObjectImpl cdoObject)
{
CDORevisionImpl revision = cdoObject.cdoRevision();
if (revision == null)
{
throw new IllegalStateException("revision == null");
}
return revision;
}
private static void handleContainmentAdd(CDOObjectImpl cdoObject, CDOFeatureImpl cdoFeature, Object value)
{
CDOObjectImpl container = cdoObject;
CDOObjectImpl contained = (CDOObjectImpl)value;
CDOViewImpl containerView = container.cdoView();
CDOViewImpl containedView = contained.cdoView();
if (containedView != containerView)
{
if (containedView != null)
{
CDOStateMachine.INSTANCE.detach(contained, contained.cdoResource(), containedView);
}
CDOStateMachine.INSTANCE.attach(contained, container.cdoResource(), containerView);
}
}
}
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