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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
* Victor Roldan Betancort - maintenance
**************************************************************************/
package org.eclipse.emf.cdo.util;
import org.eclipse.emf.cdo.CDOObject;
import org.eclipse.emf.cdo.common.revision.CDORevision;
import org.eclipse.emf.cdo.eresource.CDOResource;
import org.eclipse.emf.cdo.session.CDOCollectionLoadingPolicy;
import org.eclipse.emf.cdo.session.CDOPackageRegistry;
import org.eclipse.emf.cdo.session.CDOSession;
import org.eclipse.emf.cdo.transaction.CDOTransaction;
import org.eclipse.emf.cdo.transaction.CDOXATransaction;
import org.eclipse.emf.cdo.view.CDORevisionPrefetchingPolicy;
import org.eclipse.emf.cdo.view.CDOView;
import org.eclipse.emf.cdo.view.CDOViewSet;
import org.eclipse.emf.internal.cdo.CDOStateMachine;
import org.eclipse.emf.internal.cdo.session.CDOCollectionLoadingPolicyImpl;
import org.eclipse.emf.internal.cdo.session.CDOPackageRegistryImpl;
import org.eclipse.emf.internal.cdo.transaction.CDOXATransactionImpl;
import org.eclipse.emf.internal.cdo.util.FSMUtil;
import org.eclipse.emf.internal.cdo.view.CDORevisionPrefetchingPolicyImpl;
import org.eclipse.emf.common.notify.Adapter;
import org.eclipse.emf.common.util.BasicEList;
import org.eclipse.emf.common.util.EList;
import org.eclipse.emf.ecore.EGenericType;
import org.eclipse.emf.ecore.EModelElement;
import org.eclipse.emf.ecore.EObject;
import org.eclipse.emf.ecore.InternalEObject;
import org.eclipse.emf.ecore.impl.EStringToStringMapEntryImpl;
import org.eclipse.emf.ecore.resource.Resource;
import org.eclipse.emf.ecore.resource.ResourceSet;
import org.eclipse.emf.spi.cdo.InternalCDOObject;
import org.eclipse.emf.spi.cdo.InternalCDOView;
import java.util.Iterator;
/**
* @author Eike Stepper
*/
public final class CDOUtil
{
private CDOUtil()
{
}
/**
* @since 2.0
*/
public static CDORevisionPrefetchingPolicy createRevisionPrefetchingPolicy(int chunkSize)
{
if (chunkSize <= 0)
{
return CDORevisionPrefetchingPolicy.NO_PREFETCHING;
}
return new CDORevisionPrefetchingPolicyImpl(chunkSize);
}
/**
* @since 2.0
*/
public static CDOCollectionLoadingPolicy createCollectionLoadingPolicy(int initialChunkSize, int resolveChunkSize)
{
if (initialChunkSize == CDORevision.UNCHUNKED && resolveChunkSize == CDORevision.UNCHUNKED)
{
return CDOCollectionLoadingPolicy.DEFAULT;
}
return new CDOCollectionLoadingPolicyImpl(initialChunkSize, resolveChunkSize);
}
/**
* @since 2.0
*/
public static CDOPackageRegistry createEagerPackageRegistry()
{
return new CDOPackageRegistryImpl.Eager();
}
/**
* @since 2.0
*/
public static CDOPackageRegistry createLazyPackageRegistry()
{
return new CDOPackageRegistryImpl.Lazy();
}
/**
* @since 2.0
*/
public static CDOXATransaction createXATransaction(CDOViewSet viewSet)
{
CDOXATransaction xaTransaction = new CDOXATransactionImpl();
if (viewSet != null)
{
xaTransaction.add(viewSet);
}
return xaTransaction;
}
/**
* @since 2.0
*/
public static CDOXATransaction createXATransaction()
{
return createXATransaction(null);
}
/**
* @since 2.0
*/
public static CDOXATransaction getXATransaction(CDOViewSet viewSet)
{
EList<Adapter> adapters = viewSet.eAdapters();
for (Adapter adapter : adapters)
{
if (adapter instanceof CDOXATransactionImpl.CDOXAInternalAdapter)
{
return ((CDOXATransactionImpl.CDOXAInternalAdapter)adapter).getCDOXA();
}
}
return null;
}
/**
* @since 2.0
*/
public static CDOViewSet getViewSet(ResourceSet resourceSet)
{
EList<Adapter> adapters = resourceSet.eAdapters();
for (Adapter adapter : adapters)
{
if (adapter instanceof CDOViewSet)
{
return (CDOViewSet)adapter;
}
}
return null;
}
public static void load(EObject eObject, CDOView view)
{
InternalCDOObject cdoObject = FSMUtil.adapt(eObject, view);
CDOStateMachine.INSTANCE.read(cdoObject);
for (Iterator<InternalCDOObject> it = FSMUtil.iterator(cdoObject.eContents(), (InternalCDOView)view); it.hasNext();)
{
InternalCDOObject content = it.next();
load(content, view);
}
}
/**
* @since 2.0
*/
public static EObject getEObject(EObject object)
{
if (object instanceof InternalCDOObject)
{
return ((InternalCDOObject)object).cdoInternalInstance();
}
return object;
}
/**
* @since 2.0
*/
public static CDOObject getCDOObject(EObject object)
{
if (object instanceof CDOObject)
{
return (CDOObject)object;
}
// TODO LEGACY
throw new UnsupportedOperationException();
// return (CDOObject)FSMUtil.getLegacyWrapper((InternalEObject)object);
}
/**
* @since 2.0
*/
public static CDOObject getCDOObject(EModelElement object, CDOView view)
{
return FSMUtil.adaptMeta((InternalEObject)object, view);
}
/**
* @since 2.0
*/
public static CDOObject getCDOObject(EGenericType object, CDOView view)
{
return FSMUtil.adaptMeta((InternalEObject)object, view);
}
/**
* @since 2.0
*/
public static CDOObject getCDOObject(EStringToStringMapEntryImpl object, CDOView view)
{
return FSMUtil.adaptMeta(object, view);
}
/**
* @since 2.0
*/
public static EList<Resource> getResources(ResourceSet resourceSet)
{
EList<Resource> result = new BasicEList<Resource>();
EList<Resource> resources = resourceSet.getResources();
for (Resource resource : resources)
{
if (resource instanceof CDOResource)
{
CDOResource cdoResource = (CDOResource)resource;
if (cdoResource.isRoot())
{
continue;
}
}
result.add(resource);
}
return result;
}
/**
* Returns <code>true</code> if the given {@link CDOSession session} contains a dirty {@link CDOTransaction
* transaction}, <code>false</code> otherwise.
*
* @since 2.0
* @see CDOTransaction
*/
public static boolean isSessionDirty(CDOSession session)
{
for (CDOView view : session.getElements())
{
if (view.isDirty())
{
return true;
}
}
return false;
}
}
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