| /******************************************************************************* |
| * Copyright (c) 2007, 2010 BMW Car IT, Technische Universitaet Muenchen, 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: |
| * BMW Car IT - Initial API and implementation |
| * Technische Universitaet Muenchen - Major refactoring and extension |
| *******************************************************************************/ |
| package org.eclipse.emf.edapt.history.presentation.action; |
| |
| import java.util.List; |
| |
| import org.eclipse.core.commands.ExecutionEvent; |
| import org.eclipse.emf.edapt.history.presentation.AttachMigrationCommand; |
| import org.eclipse.emf.edapt.history.reconstruction.EcoreForwardReconstructor; |
| import org.eclipse.emf.edapt.history.reconstruction.MigrationChangeReconstructor; |
| import org.eclipse.emf.edapt.spi.history.MigrateableChange; |
| import org.eclipse.emf.edapt.spi.history.MigrationChange; |
| import org.eclipse.emf.edapt.spi.history.Release; |
| import org.eclipse.emf.edit.domain.EditingDomain; |
| import org.eclipse.jdt.core.IType; |
| import org.eclipse.jface.dialogs.MessageDialog; |
| import org.eclipse.swt.widgets.Display; |
| |
| /** |
| * Action to combine a sequence of primitives changes into a composite one. |
| * |
| * @author herrmama |
| * @author $Author$ |
| * @version $Rev$ |
| * @levd.rating RED Rev: |
| */ |
| public class AttachMigrationHandler extends |
| SubsequentChangesHandler<MigrateableChange> { |
| |
| /** {@inheritDoc} */ |
| @Override |
| protected Object execute(Release release, List<MigrateableChange> changes, |
| EditingDomain domain, ExecutionEvent event) { |
| final MigrateableChange sourceChange = changes.get(0); |
| final MigrateableChange targetChange = changes.get(changes.size() - 1); |
| |
| final MigrationChangeReconstructor reconstructor = reconstruct( |
| sourceChange, targetChange); |
| if (isConsistent(reconstructor)) { |
| final IType element = JavaUIUtils.createCustomMigration(release); |
| if (element != null) { |
| attachMigration(changes, element.getFullyQualifiedName(), |
| domain); |
| } |
| } |
| return null; |
| } |
| |
| /** Perform reconstruction to assemble code for metamodel adaptation. */ |
| private MigrationChangeReconstructor reconstruct( |
| final MigrateableChange sourceChange, MigrateableChange targetChange) { |
| final EcoreForwardReconstructor ecoreReconstructor = new EcoreForwardReconstructor( |
| sourceChange.eResource().getURI()); |
| final MigrationChangeReconstructor migrationReconstructor = new MigrationChangeReconstructor( |
| sourceChange, targetChange); |
| ecoreReconstructor.addReconstructor(migrationReconstructor); |
| |
| ecoreReconstructor.reconstruct(targetChange, false); |
| return migrationReconstructor; |
| } |
| |
| /** |
| * Check whether the metamodel is consistent before and after the changes to |
| * which a custom migration is attached. |
| */ |
| private boolean isConsistent( |
| final MigrationChangeReconstructor migrationReconstructor) { |
| if (!migrationReconstructor.isConsistent()) { |
| return MessageDialog |
| .openConfirm( |
| Display.getDefault().getActiveShell(), |
| "Metamodel inconsistent", //$NON-NLS-1$ |
| "The metamodel is inconsistent before or after the changes. Do you really want to attach a migration to them?"); //$NON-NLS-1$ |
| } |
| |
| return true; |
| } |
| |
| /** Attach a custom migration to the changes. */ |
| private MigrationChange attachMigration(List<MigrateableChange> changes, |
| String migration, EditingDomain domain) { |
| final AttachMigrationCommand command = new AttachMigrationCommand(changes, |
| migration); |
| domain.getCommandStack().execute(command); |
| return command.getMigrationChange(); |
| } |
| } |