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/*****************************************************************************
* Copyright (c) 2013, 2017 CEA LIST and others.
*
* 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:
* CEA LIST - Initial API and implementation
* Christian W. Damus (CEA) - bug 422257
* Eike Stepper (CEA) - bug 466520
*
*****************************************************************************/
package org.eclipse.papyrus.cdo.internal.ui.wizards;
import java.util.Collection;
import java.util.List;
import java.util.Map;
import org.eclipse.emf.cdo.CDOObject;
import org.eclipse.emf.cdo.explorer.CDOExplorerUtil;
import org.eclipse.emf.cdo.explorer.checkouts.CDOCheckout;
import org.eclipse.emf.cdo.view.CDOView;
import org.eclipse.emf.ecore.EObject;
import org.eclipse.emf.ecore.resource.ResourceSet;
import org.eclipse.jface.viewers.IStructuredSelection;
import org.eclipse.jface.viewers.StructuredSelection;
import org.eclipse.papyrus.cdo.internal.core.CDOProxyResolvingResourceSet;
import org.eclipse.papyrus.cdo.internal.core.CDOUtils;
import org.eclipse.papyrus.cdo.internal.ui.Activator;
import org.eclipse.papyrus.cdo.internal.ui.views.DIModel;
import org.eclipse.papyrus.infra.emf.utils.EMFHelper;
import com.google.common.collect.Lists;
import com.google.common.collect.Maps;
/**
* This is the LocalRepositoryView type. Enjoy.
*/
public class LocalRepositoryView {
private final Map<CDOCheckout, CDOView> localViews = Maps.newHashMap();
private ResourceSet rset = null;
public LocalRepositoryView() {
super();
}
/**
* Disposes of all of the local {@link CDOView}s that I have cached.
*/
public void dispose() {
for (Map.Entry<CDOCheckout, CDOView> next : localViews.entrySet()) {
CDOView view = next.getValue();
try {
CDOUtils.unload(view);
} catch (Exception e) {
Activator.error("Exception in unloading CDO repository view.", e); //$NON-NLS-1$
} finally {
view.close();
}
}
localViews.clear();
if (rset != null) {
try {
EMFHelper.unload(rset);
} catch (Exception e) {
Activator.error("Exception in unloading CDO repository view's resource set.", e); //$NON-NLS-1$
} finally {
rset = null;
}
}
}
/**
* Obtain a view of the specified {@code selection} in the context of a local cache of distinct {@link CDOView}s.
*
* @param selection
* a selection of objects in a CDO view
*
* @return a new selection consisting of the same objects as presented in my local CDO views
*/
public IStructuredSelection translate(IStructuredSelection selection) {
return new StructuredSelection(translate(selection.toList()));
}
/**
* Obtain a view of the specified {@code objects} in the context of a local cache of distinct {@link CDOView}s.
*
* @param objects
* a bunch of objects in a CDO view
*
* @return a new list consisting of the same objects as presented in my local CDO views
*/
public List<Object> translate(Collection<?> objects) {
List<Object> result = Lists.newArrayListWithCapacity(objects.size());
for (Object next : objects) {
if (next instanceof EObject) {
result.add(translate((EObject) next));
} else if (next instanceof DIModel) {
DIModel di = (DIModel) next;
result.add(DIModel.getInstance(translate(di.getResource()), true));
}
}
return result;
}
/**
* Obtain a view of the specified {@code object} in the context of a local cache of distinct {@link CDOView}s.
*
* @param objects
* a modeled object in a CDO view
*
* @return the same object as presented in my local CDO views
*/
public <T extends EObject> T translate(T object) {
T result;
if (object instanceof CDOObject) {
CDOObject cdo = (CDOObject) object;
CDOView view = cdo.cdoView();
if (view == null) {
result = object;
} else {
CDOCheckout checkout = CDOExplorerUtil.getCheckout(view);
CDOView localView = localViews.get(checkout);
if (localView == null) {
localView = checkout.openView(true, getResourceSet());
localViews.put(checkout, localView);
}
result = localView.getObject(object);
}
} else {
result = object;
}
return result;
}
protected ResourceSet getResourceSet() {
if (rset == null) {
rset = createResourceSet();
}
return rset;
}
protected ResourceSet createResourceSet() {
return new CDOProxyResolvingResourceSet();
}
}
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