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/*******************************************************************************
* Copyright (c) 2010, 2011 Technical University of Denmark.
* 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:
* Patrick Koenemann, DTU Informatics - initial API and implementation
*******************************************************************************/
package org.eclipse.emf.compare.mpatch.apply.generic.actions;
import java.io.IOException;
import org.eclipse.core.runtime.IProgressMonitor;
import org.eclipse.core.runtime.Status;
import org.eclipse.emf.compare.mpatch.IndepChange;
import org.eclipse.emf.compare.mpatch.MPatchModel;
import org.eclipse.emf.compare.mpatch.apply.generic.GenericApplyActivator;
import org.eclipse.emf.compare.mpatch.apply.generic.impl.MPatchDependencies;
import org.eclipse.emf.compare.mpatch.common.actions.AbstractCompareAction;
import org.eclipse.emf.compare.mpatch.common.util.MPatchConstants;
import org.eclipse.emf.ecore.EObject;
import org.eclipse.emf.ecore.resource.Resource;
/**
* An action on {@link MPatchModel} files (extension: {@link MPatchConstants#FILE_EXTENSION_MPATCH}) that calculates and adds
* dependencies between the {@link IndepChange}s.
*
* @author Patrick Koenemann (pk@imm.dtu.dk)
*
*/
public class DependencyAction extends AbstractCompareAction {
private static final String ACTION_NAME = "Dependency Graph";
private static final String inputFileExtension = MPatchConstants.FILE_EXTENSION_MPATCH;
private static final String outputFileExtension = MPatchConstants.FILE_EXTENSION_MPATCH;
private static final String jobTitle = "Creating " + ACTION_NAME + " for " + MPatchConstants.MPATCH_SHORT_NAME + "...";
public DependencyAction() {
super(inputFileExtension, outputFileExtension, jobTitle);
}
@Override
protected Status runAction(Resource input, Resource output, IProgressMonitor monitor) {
String message = "";
int code = Status.OK;
Exception exception = null;
// get the mpatch
final EObject content = input.getContents().get(0);
if (content instanceof MPatchModel) {
final MPatchModel mpatch = (MPatchModel) content;
// introduce dependency graph
int deps;
try {
deps = MPatchDependencies.calculateDependencies(mpatch);
// save the output
if (deps > 0) {
output.getContents().add(mpatch);
try {
output.save(null);
// notify the user about result
message = ACTION_NAME + " successfully created with " + deps + " dependencies.";
} catch (final IOException e) {
exception = e;
message = "Could not save diff with " + ACTION_NAME + "!";
code = Status.ERROR;
}
} else {
message = "No dependencies created/required for " + MPatchConstants.MPATCH_LONG_NAME + ".";
}
} catch (final Exception e) {
exception = e;
message = "An exception occured during " + ACTION_NAME + " creation";
code = Status.ERROR;
}
} else {
code = Status.ERROR;
message = "Could not find " + MPatchConstants.MPATCH_LONG_NAME + " in:\n\n" + content;
}
return new Status(code, GenericApplyActivator.PLUGIN_ID, message, exception);
}
}
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