plugins/cdo/bundles/org.eclipse.papyrus.cdo.ui.customization.properties/src/org/eclipse/papyrus/cdo/internal/ui/customization/properties/storage/action/CDOContextCopyAction.java - papyrus/org.eclipse.papyrus-collaborativemodeling - Git at Google

 /*****************************************************************************
  * 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 2.0
  * which accompanies this distribution, and is available at
  * https://www.eclipse.org/legal/epl-2.0/
  *
  * SPDX-License-Identifier: EPL-2.0
  *
  * 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.customization.properties.storage.action;

 import static org.eclipse.papyrus.cdo.internal.ui.customization.properties.storage.CDOContextStorageProvider.CONTEXTS_PATH;
 import static org.eclipse.papyrus.cdo.internal.ui.customization.properties.storage.CDOContextStorageProvider.CONTEXT_EXTENSION;
 import static org.eclipse.papyrus.views.properties.toolsmiths.storage.actions.ContextStorageActionUtil.isRelative;

 import java.io.IOException;
 import java.io.InputStream;
 import java.io.InputStreamReader;
 import java.io.Reader;
 import java.util.LinkedList;
 import java.util.List;

 import org.eclipse.core.runtime.CoreException;
 import org.eclipse.core.runtime.IProgressMonitor;
 import org.eclipse.core.runtime.IStatus;
 import org.eclipse.core.runtime.Path;
 import org.eclipse.core.runtime.Status;
 import org.eclipse.core.runtime.SubMonitor;
 import org.eclipse.emf.cdo.common.lob.CDOClob;
 import org.eclipse.emf.cdo.eresource.CDOResourceFolder;
 import org.eclipse.emf.cdo.eresource.CDOTextResource;
 import org.eclipse.emf.cdo.explorer.CDOExplorerUtil;
 import org.eclipse.emf.cdo.explorer.checkouts.CDOCheckout;
 import org.eclipse.emf.cdo.explorer.checkouts.CDOCheckoutManager;
 import org.eclipse.emf.cdo.transaction.CDOTransaction;
 import org.eclipse.emf.cdo.util.CDOURIUtil;
 import org.eclipse.emf.cdo.util.CDOUtil;
 import org.eclipse.emf.cdo.view.CDOView;
 import org.eclipse.emf.common.util.URI;
 import org.eclipse.emf.ecore.resource.Resource;
 import org.eclipse.emf.ecore.resource.ResourceSet;
 import org.eclipse.emf.ecore.resource.URIConverter;
 import org.eclipse.emf.ecore.resource.impl.ResourceSetImpl;
 import org.eclipse.jface.dialogs.ProgressMonitorDialog;
 import org.eclipse.jface.operation.IRunnableContext;
 import org.eclipse.jface.window.Window;
 import org.eclipse.osgi.util.NLS;
 import org.eclipse.papyrus.cdo.internal.core.CDOUtils;
 import org.eclipse.papyrus.cdo.internal.ui.customization.properties.Activator;
 import org.eclipse.papyrus.cdo.internal.ui.customization.properties.messages.Messages;
 import org.eclipse.papyrus.cdo.internal.ui.customization.properties.storage.CDOTextURIHandler;
 import org.eclipse.papyrus.cdo.internal.ui.dialogs.CheckoutSelectionDialog;
 import org.eclipse.papyrus.infra.emf.utils.EMFHelper;
 import org.eclipse.papyrus.infra.properties.catalog.PropertiesURIHandler;
 import org.eclipse.papyrus.infra.properties.contexts.Context;
 import org.eclipse.papyrus.infra.properties.contexts.Section;
 import org.eclipse.papyrus.infra.properties.contexts.Tab;
 import org.eclipse.papyrus.infra.properties.ui.util.PropertiesUtil;
 import org.eclipse.papyrus.views.properties.toolsmiths.storage.actions.ContextStorageActionUtil;
 import org.eclipse.papyrus.views.properties.toolsmiths.storage.actions.IContextCopyAction;
 import org.eclipse.swt.widgets.Display;
 import org.eclipse.swt.widgets.Shell;

 import com.google.common.base.Supplier;
 import com.google.common.io.Closeables;

 /**
  * This is the CDOContextCopyAction type. Enjoy.
  */
 public class CDOContextCopyAction extends AbstractCDOContextAction implements IContextCopyAction {

 	@Override
 	public String getLabel() {
 		return Messages.CDOContextCopyAction_0;
 	}

 	@Override
 	public String getToolTip() {
 		return Messages.CDOContextCopyAction_1;
 	}

 	@Override
 	public Context copy(Context source, String targetName, IProgressMonitor monitor) throws CoreException {
 		CDOCheckout checkout = selectCheckout(source);
 		if (checkout == null) {
 			// user cancelled
 			return null;
 		}

 		CDOTransaction transaction = checkout.openTransaction(new ResourceSetImpl());

 		SubMonitor sub = SubMonitor.convert(monitor);

 		Context result = null;

 		try {
 			CDOResourceFolder contextsFolder = transaction.getOrCreateResourceFolder(CONTEXTS_PATH);
 			String folderPath = new Path(contextsFolder.getPath()).append(targetName).toString();
 			String resourcePath = new Path(folderPath).append(targetName).addFileExtension(CONTEXT_EXTENSION).toString();

 			if (transaction.hasResource(folderPath)) { // actually checks for any kind of resource node at that path
 				throw new IOException(Messages.CDOContextCopyAction_2);
 			}

 			transaction.createResourceFolder(folderPath);
 			CDOTextResource targetResource = transaction.createTextResource(resourcePath);

 			// create a custom URI scheme that delegates XMI resource content to a CDOTextResource's CLOB content
 			URI targetModelURI = CDOTextURIHandler.createURI(targetResource.getURI());

 			ResourceSet resourceSet = transaction.getResourceSet();

 			// add the URI handler to load the context resource
 			CDOTextURIHandler.install(resourceSet);

 			// re-load the source context in the new resource set to scope the copy operation
 			Context sourceContext = (Context) EMFHelper.loadEMFModel(resourceSet, source.eResource().getURI());
 			IStatus copyResult = copyAll(sourceContext, targetResource, sub);

 			if (copyResult.isOK()) {
 				Context resultContext = (Context) EMFHelper.loadEMFModel(resourceSet, targetModelURI);
 				resultContext.setName(targetName);
 				resultContext.setPrototype(sourceContext);
 				resultContext.eResource().save(null);

 				long commitTime = System.currentTimeMillis();
 				transaction.commit();

 				CDOView sourceView = CDOUtil.getCDOObject(source).cdoView();
 				sourceView.waitForUpdate(commitTime, 30000L);

 				// load the new instance in the shared resource set
 				ResourceSet sourceResourceSet = sourceView.getResourceSet();
 				result = (Context) EMFHelper.loadEMFModel(sourceResourceSet, targetModelURI);
 			} else if (copyResult.getSeverity() != IStatus.CANCEL) {
 				throw new CoreException(copyResult);
 			}
 		} catch (Exception e) {
 			throw new CoreException(new Status(IStatus.ERROR, Activator.PLUGIN_ID, e.getLocalizedMessage(), e));
 		} finally {
 			CDOUtils.unload(transaction);
 			transaction.close();
 			EMFHelper.unload(transaction.getResourceSet());
 			sub.done();
 		}

 		return result;
 	}

 	protected CDOCheckout selectCheckout(Context context) {
 		CDOCheckout result = null;
 		CDOCheckoutManager mgr = CDOExplorerUtil.getCheckoutManager();
 		CDOCheckout[] checkouts = mgr.getCheckouts();

 		// default selection is the repository containing the context to be copied,
 		// if it is in a repository
 		CDOCheckout initialSelection = null;
 		URI uri = context.eResource().getURI();
 		if (CDOUtils.isCDOURI(uri)) {
 			initialSelection = CDOExplorerUtil.getCheckout(uri);
 		}

 		// otherwise, look for the first open repository
 		if (initialSelection == null) {
 			for (CDOCheckout next : checkouts) {
 				if (next.isOpen()) {
 					initialSelection = next;
 					break;
 				}
 			}
 		}

 		result = initialSelection;

 		if (checkouts.length > 1) {
 			final CDOCheckout[] innerResult = { initialSelection };
 			Display.getDefault().syncExec(new Runnable() {

 				@Override
 				public void run() {
 					Shell active = Display.getDefault().getActiveShell();
 					CheckoutSelectionDialog dlg = new CheckoutSelectionDialog(active, innerResult[0], new Supplier<IRunnableContext>() {

 						@Override
 						public IRunnableContext get() {
 							return new ProgressMonitorDialog(Display.getDefault().getActiveShell());
 						}
 					});

 					if (dlg.open() == Window.OK) {
 						innerResult[0] = dlg.getSelectedRepository();
 					} else {
 						innerResult[0] = null;
 					}
 				}
 			});

 			result = innerResult[0];
 		}

 		return (CDOCheckout) result;
 	}

 	private IStatus copyAll(Context source, CDOTextResource target, IProgressMonitor monitor) {
 		SubMonitor sub = SubMonitor.convert(monitor, 100);

 		ContextStorageActionUtil.initializeCopy(source, sub.newChild(10));

 		return doCopy(source, target, sub.newChild(90));
 	}

 	private IStatus doCopy(Context source, CDOTextResource target, IProgressMonitor monitor) {
 		IStatus result = Status.OK_STATUS;

 		final CDOResourceFolder targetFolder = target.getFolder();
 		final String targetName = target.getName();

 		try {
 			Resource sourceResource = source.eResource();
 			int resourcesToCopy = sourceResource.getResourceSet().getResources().size();
 			List<Context> contexts = new LinkedList<Context>();
 			for (Context context : PropertiesUtil.getDependencies(source)) {
 				if (isRelative(sourceResource, context.eResource())) {
 					contexts.add(context);
 					for (Tab tab : context.getTabs()) {
 						resourcesToCopy += tab.getSections().size();
 					}
 				}
 			}

 			monitor.beginTask(NLS.bind(Messages.CDOContextCopyAction_3, source.getName(), target.getName()), resourcesToCopy);

 			// copy the primary context
 			copy(sourceResource.getResourceSet(), sourceResource.getURI(), target);
 			monitor.worked(1);

 			// copy the dependent resources which are located in the same folder or in subfolders
 			for (Resource resource : sourceResource.getResourceSet().getResources()) {
 				if (monitor.isCanceled()) {
 					return Status.CANCEL_STATUS;
 				}
 				if ((resource != sourceResource) && isRelative(sourceResource, resource)) {
 					copy(resource, targetFolder, sourceResource, targetName);
 				}
 				monitor.worked(1);
 			}

 			// copy the XWT files (they haven't been loaded in the resource set)
 			for (Context context : contexts) {
 				for (Tab tab : context.getTabs()) {
 					for (Section section : tab.getSections()) {
 						if (monitor.isCanceled()) {
 							return Status.CANCEL_STATUS;
 						}
 						copy(section.getSectionFile(), targetFolder, sourceResource);
 						monitor.worked(1);
 					}
 				}
 			}

 			monitor.done();
 		} catch (IOException ex) {
 			Activator.log.error(ex);
 			result = new Status(IStatus.ERROR, Activator.PLUGIN_ID, "An error occurred during the copy of " + source.getName(), ex); //$NON-NLS-1$
 			monitor.done();
 		}

 		return result;
 	}

 	protected void copy(String xwtFileName, CDOResourceFolder targetFolder, Resource sourceResource) throws IOException {
 		CDOTextResource target = ((CDOTransaction) targetFolder.cdoView()).createTextResource(new Path(targetFolder.getPath()).append(xwtFileName).toString());
 		URI sourceURI = URI.createURI(xwtFileName).resolve(sourceResource.getURI());
 		copy(sourceResource.getResourceSet(), sourceURI, target);
 	}

 	protected void copy(ResourceSet sourceResourceSet, URI sourceURI, CDOTextResource target) throws IOException {
 		PropertiesURIHandler uriHandler = new PropertiesURIHandler();
 		if (uriHandler.canHandle(sourceURI)) {
 			sourceURI = uriHandler.getConvertedURI(sourceURI);
 		}

 		InputStream input = null;

 		try {
 			input = sourceResourceSet.getURIConverter().createInputStream(sourceURI);
 			String encoding = (input instanceof URIConverter.Readable) ? ((URIConverter.Readable) input).getEncoding() : "UTF-8"; //$NON-NLS-1$
 			Reader contents = new InputStreamReader(input, encoding);
 			target.setContents(new CDOClob(contents));
 		} catch (IOException ex) {
 			Activator.log.error(ex);
 		} finally {
 			if (input != null) {
 				Closeables.closeQuietly(input);
 			}
 		}
 	}

 	private void copy(Resource resource, CDOResourceFolder folder, Resource base, String targetName) throws IOException {
 		URI relativeURI = resource.getURI().deresolve(base.getURI());
 		if (relativeURI.toString().equals("")) { //$NON-NLS-1$
 			relativeURI = URI.createURI(targetName + ".ctx"); //$NON-NLS-1$
 		}

 		// append a dummy segment to ensure correct resolution (otherwise we will
 		// miss the last segment of the folder path)
 		URI uri = relativeURI.resolve(folder.getURI().appendSegment("dummy.ctx")); //$NON-NLS-1$
 		CDOTextResource target = ((CDOTransaction) folder.cdoView()).createTextResource(CDOURIUtil.extractResourcePath(uri));
 		copy(resource.getResourceSet(), resource.getURI(), target);
 	}
 }
	/*****************************************************************************
	* 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 2.0
	* which accompanies this distribution, and is available at
	* https://www.eclipse.org/legal/epl-2.0/
	*
	* SPDX-License-Identifier: EPL-2.0
	*
	* 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.customization.properties.storage.action;

	import static org.eclipse.papyrus.cdo.internal.ui.customization.properties.storage.CDOContextStorageProvider.CONTEXTS_PATH;
	import static org.eclipse.papyrus.cdo.internal.ui.customization.properties.storage.CDOContextStorageProvider.CONTEXT_EXTENSION;
	import static org.eclipse.papyrus.views.properties.toolsmiths.storage.actions.ContextStorageActionUtil.isRelative;

	import java.io.IOException;
	import java.io.InputStream;
	import java.io.InputStreamReader;
	import java.io.Reader;
	import java.util.LinkedList;
	import java.util.List;

	import org.eclipse.core.runtime.CoreException;
	import org.eclipse.core.runtime.IProgressMonitor;
	import org.eclipse.core.runtime.IStatus;
	import org.eclipse.core.runtime.Path;
	import org.eclipse.core.runtime.Status;
	import org.eclipse.core.runtime.SubMonitor;
	import org.eclipse.emf.cdo.common.lob.CDOClob;
	import org.eclipse.emf.cdo.eresource.CDOResourceFolder;
	import org.eclipse.emf.cdo.eresource.CDOTextResource;
	import org.eclipse.emf.cdo.explorer.CDOExplorerUtil;
	import org.eclipse.emf.cdo.explorer.checkouts.CDOCheckout;
	import org.eclipse.emf.cdo.explorer.checkouts.CDOCheckoutManager;
	import org.eclipse.emf.cdo.transaction.CDOTransaction;
	import org.eclipse.emf.cdo.util.CDOURIUtil;
	import org.eclipse.emf.cdo.util.CDOUtil;
	import org.eclipse.emf.cdo.view.CDOView;
	import org.eclipse.emf.common.util.URI;
	import org.eclipse.emf.ecore.resource.Resource;
	import org.eclipse.emf.ecore.resource.ResourceSet;
	import org.eclipse.emf.ecore.resource.URIConverter;
	import org.eclipse.emf.ecore.resource.impl.ResourceSetImpl;
	import org.eclipse.jface.dialogs.ProgressMonitorDialog;
	import org.eclipse.jface.operation.IRunnableContext;
	import org.eclipse.jface.window.Window;
	import org.eclipse.osgi.util.NLS;
	import org.eclipse.papyrus.cdo.internal.core.CDOUtils;
	import org.eclipse.papyrus.cdo.internal.ui.customization.properties.Activator;
	import org.eclipse.papyrus.cdo.internal.ui.customization.properties.messages.Messages;
	import org.eclipse.papyrus.cdo.internal.ui.customization.properties.storage.CDOTextURIHandler;
	import org.eclipse.papyrus.cdo.internal.ui.dialogs.CheckoutSelectionDialog;
	import org.eclipse.papyrus.infra.emf.utils.EMFHelper;
	import org.eclipse.papyrus.infra.properties.catalog.PropertiesURIHandler;
	import org.eclipse.papyrus.infra.properties.contexts.Context;
	import org.eclipse.papyrus.infra.properties.contexts.Section;
	import org.eclipse.papyrus.infra.properties.contexts.Tab;
	import org.eclipse.papyrus.infra.properties.ui.util.PropertiesUtil;
	import org.eclipse.papyrus.views.properties.toolsmiths.storage.actions.ContextStorageActionUtil;
	import org.eclipse.papyrus.views.properties.toolsmiths.storage.actions.IContextCopyAction;
	import org.eclipse.swt.widgets.Display;
	import org.eclipse.swt.widgets.Shell;

	import com.google.common.base.Supplier;
	import com.google.common.io.Closeables;

	/**
	* This is the CDOContextCopyAction type. Enjoy.
	*/
	public class CDOContextCopyAction extends AbstractCDOContextAction implements IContextCopyAction {

	@Override
	public String getLabel() {
	return Messages.CDOContextCopyAction_0;
	}

	@Override
	public String getToolTip() {
	return Messages.CDOContextCopyAction_1;
	}

	@Override
	public Context copy(Context source, String targetName, IProgressMonitor monitor) throws CoreException {
	CDOCheckout checkout = selectCheckout(source);
	if (checkout == null) {
	// user cancelled
	return null;
	}

	CDOTransaction transaction = checkout.openTransaction(new ResourceSetImpl());

	SubMonitor sub = SubMonitor.convert(monitor);

	Context result = null;

	try {
	CDOResourceFolder contextsFolder = transaction.getOrCreateResourceFolder(CONTEXTS_PATH);
	String folderPath = new Path(contextsFolder.getPath()).append(targetName).toString();
	String resourcePath = new Path(folderPath).append(targetName).addFileExtension(CONTEXT_EXTENSION).toString();

	if (transaction.hasResource(folderPath)) { // actually checks for any kind of resource node at that path
	throw new IOException(Messages.CDOContextCopyAction_2);
	}

	transaction.createResourceFolder(folderPath);
	CDOTextResource targetResource = transaction.createTextResource(resourcePath);

	// create a custom URI scheme that delegates XMI resource content to a CDOTextResource's CLOB content
	URI targetModelURI = CDOTextURIHandler.createURI(targetResource.getURI());

	ResourceSet resourceSet = transaction.getResourceSet();

	// add the URI handler to load the context resource
	CDOTextURIHandler.install(resourceSet);

	// re-load the source context in the new resource set to scope the copy operation
	Context sourceContext = (Context) EMFHelper.loadEMFModel(resourceSet, source.eResource().getURI());
	IStatus copyResult = copyAll(sourceContext, targetResource, sub);

	if (copyResult.isOK()) {
	Context resultContext = (Context) EMFHelper.loadEMFModel(resourceSet, targetModelURI);
	resultContext.setName(targetName);
	resultContext.setPrototype(sourceContext);
	resultContext.eResource().save(null);

	long commitTime = System.currentTimeMillis();
	transaction.commit();

	CDOView sourceView = CDOUtil.getCDOObject(source).cdoView();
	sourceView.waitForUpdate(commitTime, 30000L);

	// load the new instance in the shared resource set
	ResourceSet sourceResourceSet = sourceView.getResourceSet();
	result = (Context) EMFHelper.loadEMFModel(sourceResourceSet, targetModelURI);
	} else if (copyResult.getSeverity() != IStatus.CANCEL) {
	throw new CoreException(copyResult);
	}
	} catch (Exception e) {
	throw new CoreException(new Status(IStatus.ERROR, Activator.PLUGIN_ID, e.getLocalizedMessage(), e));
	} finally {
	CDOUtils.unload(transaction);
	transaction.close();
	EMFHelper.unload(transaction.getResourceSet());
	sub.done();
	}

	return result;
	}

	protected CDOCheckout selectCheckout(Context context) {
	CDOCheckout result = null;
	CDOCheckoutManager mgr = CDOExplorerUtil.getCheckoutManager();
	CDOCheckout[] checkouts = mgr.getCheckouts();

	// default selection is the repository containing the context to be copied,
	// if it is in a repository
	CDOCheckout initialSelection = null;
	URI uri = context.eResource().getURI();
	if (CDOUtils.isCDOURI(uri)) {
	initialSelection = CDOExplorerUtil.getCheckout(uri);
	}

	// otherwise, look for the first open repository
	if (initialSelection == null) {
	for (CDOCheckout next : checkouts) {
	if (next.isOpen()) {
	initialSelection = next;
	break;
	}
	}
	}

	result = initialSelection;

	if (checkouts.length > 1) {
	final CDOCheckout[] innerResult = { initialSelection };
	Display.getDefault().syncExec(new Runnable() {

	@Override
	public void run() {
	Shell active = Display.getDefault().getActiveShell();
	CheckoutSelectionDialog dlg = new CheckoutSelectionDialog(active, innerResult[0], new Supplier<IRunnableContext>() {

	@Override
	public IRunnableContext get() {
	return new ProgressMonitorDialog(Display.getDefault().getActiveShell());
	}
	});

	if (dlg.open() == Window.OK) {
	innerResult[0] = dlg.getSelectedRepository();
	} else {
	innerResult[0] = null;
	}
	}
	});

	result = innerResult[0];
	}

	return (CDOCheckout) result;
	}

	private IStatus copyAll(Context source, CDOTextResource target, IProgressMonitor monitor) {
	SubMonitor sub = SubMonitor.convert(monitor, 100);

	ContextStorageActionUtil.initializeCopy(source, sub.newChild(10));

	return doCopy(source, target, sub.newChild(90));
	}

	private IStatus doCopy(Context source, CDOTextResource target, IProgressMonitor monitor) {
	IStatus result = Status.OK_STATUS;

	final CDOResourceFolder targetFolder = target.getFolder();
	final String targetName = target.getName();

	try {
	Resource sourceResource = source.eResource();
	int resourcesToCopy = sourceResource.getResourceSet().getResources().size();
	List<Context> contexts = new LinkedList<Context>();
	for (Context context : PropertiesUtil.getDependencies(source)) {
	if (isRelative(sourceResource, context.eResource())) {
	contexts.add(context);
	for (Tab tab : context.getTabs()) {
	resourcesToCopy += tab.getSections().size();
	}
	}
	}

	monitor.beginTask(NLS.bind(Messages.CDOContextCopyAction_3, source.getName(), target.getName()), resourcesToCopy);

	// copy the primary context
	copy(sourceResource.getResourceSet(), sourceResource.getURI(), target);
	monitor.worked(1);

	// copy the dependent resources which are located in the same folder or in subfolders
	for (Resource resource : sourceResource.getResourceSet().getResources()) {
	if (monitor.isCanceled()) {
	return Status.CANCEL_STATUS;
	}
	if ((resource != sourceResource) && isRelative(sourceResource, resource)) {
	copy(resource, targetFolder, sourceResource, targetName);
	}
	monitor.worked(1);
	}

	// copy the XWT files (they haven't been loaded in the resource set)
	for (Context context : contexts) {
	for (Tab tab : context.getTabs()) {
	for (Section section : tab.getSections()) {
	if (monitor.isCanceled()) {
	return Status.CANCEL_STATUS;
	}
	copy(section.getSectionFile(), targetFolder, sourceResource);
	monitor.worked(1);
	}
	}
	}

	monitor.done();
	} catch (IOException ex) {
	Activator.log.error(ex);
	result = new Status(IStatus.ERROR, Activator.PLUGIN_ID, "An error occurred during the copy of " + source.getName(), ex); //$NON-NLS-1$
	monitor.done();
	}

	return result;
	}

	protected void copy(String xwtFileName, CDOResourceFolder targetFolder, Resource sourceResource) throws IOException {
	CDOTextResource target = ((CDOTransaction) targetFolder.cdoView()).createTextResource(new Path(targetFolder.getPath()).append(xwtFileName).toString());
	URI sourceURI = URI.createURI(xwtFileName).resolve(sourceResource.getURI());
	copy(sourceResource.getResourceSet(), sourceURI, target);
	}

	protected void copy(ResourceSet sourceResourceSet, URI sourceURI, CDOTextResource target) throws IOException {
	PropertiesURIHandler uriHandler = new PropertiesURIHandler();
	if (uriHandler.canHandle(sourceURI)) {
	sourceURI = uriHandler.getConvertedURI(sourceURI);
	}

	InputStream input = null;

	try {
	input = sourceResourceSet.getURIConverter().createInputStream(sourceURI);
	String encoding = (input instanceof URIConverter.Readable) ? ((URIConverter.Readable) input).getEncoding() : "UTF-8"; //$NON-NLS-1$
	Reader contents = new InputStreamReader(input, encoding);
	target.setContents(new CDOClob(contents));
	} catch (IOException ex) {
	Activator.log.error(ex);
	} finally {
	if (input != null) {
	Closeables.closeQuietly(input);
	}
	}
	}

	private void copy(Resource resource, CDOResourceFolder folder, Resource base, String targetName) throws IOException {
	URI relativeURI = resource.getURI().deresolve(base.getURI());
	if (relativeURI.toString().equals("")) { //$NON-NLS-1$
	relativeURI = URI.createURI(targetName + ".ctx"); //$NON-NLS-1$
	}

	// append a dummy segment to ensure correct resolution (otherwise we will
	// miss the last segment of the folder path)
	URI uri = relativeURI.resolve(folder.getURI().appendSegment("dummy.ctx")); //$NON-NLS-1$
	CDOTextResource target = ((CDOTransaction) folder.cdoView()).createTextResource(CDOURIUtil.extractResourcePath(uri));
	copy(resource.getResourceSet(), resource.getURI(), target);
	}
	}