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/*******************************************************************************
* Copyright (c) 2007 Obeo.
* 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:
* Obeo - ATL tester
*******************************************************************************/
package org.eclipse.m2m.atl.tests.util;
import java.io.File;
import java.io.FileInputStream;
import java.io.IOException;
import java.io.StringWriter;
import java.util.Collections;
import java.util.HashMap;
import java.util.HashSet;
import java.util.Iterator;
import java.util.Map;
import java.util.Set;
import java.util.concurrent.ConcurrentHashMap;
import org.eclipse.core.runtime.NullProgressMonitor;
import org.eclipse.emf.common.util.URI;
import org.eclipse.emf.compare.diff.generic.DiffMaker;
import org.eclipse.emf.compare.diff.metamodel.DiffFactory;
import org.eclipse.emf.compare.diff.metamodel.DiffGroup;
import org.eclipse.emf.compare.diff.metamodel.DiffModel;
import org.eclipse.emf.compare.diff.metamodel.ModelInputSnapshot;
import org.eclipse.emf.compare.match.api.MatchOptions;
import org.eclipse.emf.compare.match.metamodel.MatchModel;
import org.eclipse.emf.compare.match.service.MatchService;
import org.eclipse.emf.ecore.EObject;
import org.eclipse.emf.ecore.EPackage;
import org.eclipse.emf.ecore.EStructuralFeature;
import org.eclipse.emf.ecore.resource.Resource;
import org.eclipse.emf.ecore.resource.ResourceSet;
import org.eclipse.emf.ecore.resource.impl.ResourceSetImpl;
import org.eclipse.emf.ecore.xmi.XMLResource;
import org.eclipse.emf.ecore.xmi.impl.EcoreResourceFactoryImpl;
import org.eclipse.emf.ecore.xmi.impl.XMIResourceFactoryImpl;
import org.eclipse.emf.ecore.xmi.impl.XMIResourceImpl;
import org.eclipse.m2m.atl.tests.AtlTestPlugin;
/**
* Utility class for models.
*
* @author William Piers <a href="mailto:william.piers@obeo.fr">william.piers@obeo.fr</a>
*/
public final class ModelUtils {
/** Constant for the file encoding system property. */
private static final String ENCODING_PROPERTY = "file.encoding"; //$NON-NLS-1$
/**
* Utility classes don't need to (and shouldn't) be instantiated.
*/
private ModelUtils() {
// prevents instantiation
}
/**
* Loads a model from a {@link java.io.File File} in a given {@link ResourceSet}.
*
* @param file
* {@link java.io.File File} containing the model to be loaded.
* @param resourceSet
* The {@link ResourceSet} to load the model in.
* @return The model loaded from the file.
* @throws IOException
* If the given file does not exist.
*/
public static EObject load(File file, ResourceSet resourceSet) throws IOException {
return load(URI.createFileURI(file.getPath()), resourceSet);
}
/**
* Loads a model from an {@link org.eclipse.emf.common.util.URI URI} in a given {@link ResourceSet}.
*
* @param modelURI
* {@link org.eclipse.emf.common.util.URI URI} where the model is stored.
* @param resourceSet
* The {@link ResourceSet} to load the model in.
* @return The model loaded from the URI.
* @throws IOException
* If the given file does not exist.
*/
public static EObject load(URI modelURI, ResourceSet resourceSet) throws IOException {
EObject result = null;
String fileExtension = modelURI.fileExtension();
if (fileExtension == null || fileExtension.length() == 0) {
fileExtension = Resource.Factory.Registry.DEFAULT_EXTENSION;
}
final Resource.Factory.Registry reg = Resource.Factory.Registry.INSTANCE;
final Object resourceFactory = reg.getExtensionToFactoryMap().get(fileExtension);
if (resourceFactory != null) {
resourceSet.getResourceFactoryRegistry().getExtensionToFactoryMap().put(fileExtension,
resourceFactory);
} else {
resourceSet.getResourceFactoryRegistry().getExtensionToFactoryMap().put(fileExtension,
new XMIResourceFactoryImpl());
}
final Resource modelResource = resourceSet.createResource(modelURI);
final Map options = new ConcurrentHashMap();
options.put(XMLResource.OPTION_ENCODING, System.getProperty(ENCODING_PROPERTY));
modelResource.load(options);
if (modelResource.getContents().size() > 0)
result = (EObject)modelResource.getContents().get(0);
return result;
}
private static Set getElementsByType(Resource extent,String type) {
Set ret = new HashSet();
for(Iterator i = extent.getAllContents(); i.hasNext(); ) {
EObject eo = (EObject)i.next();
if (eo.eClass().getName().equals(type))
ret.add(eo);
}
return ret;
}
/**
* Metamodel register : allows to open/compare specific models
* @param metamodelURI
* @param resourceSet
* @throws IOException
*/
public static void registerMetamodel(URI metamodelURI, ResourceSet resourceSet) throws IOException {
if (EPackage.Registry.INSTANCE.getEPackage(metamodelURI.toString()) != null) {
return;
}
Resource.Factory myEcoreFactory = new EcoreResourceFactoryImpl();
Resource mmExtent = myEcoreFactory.createResource(metamodelURI);
try {
mmExtent.load(new FileInputStream(metamodelURI.path()),Collections.EMPTY_MAP);
} catch (IOException e) {
e.printStackTrace();
} catch (Exception ex) {
ex.printStackTrace();
}
for(Iterator it = getElementsByType(mmExtent,"EPackage").iterator() ; it.hasNext() ; ) {
EPackage p = (EPackage)it.next();
String nsURI = p.getNsURI();
if(nsURI == null) {
nsURI = p.getName();
p.setNsURI(nsURI);
}
EPackage.Registry.INSTANCE.put(nsURI, p);
}
for(Iterator it = getElementsByType(mmExtent,"EDataType").iterator(); it.hasNext(); ) {
EObject eo = (EObject)it.next();
EStructuralFeature sf;
sf = eo.eClass().getEStructuralFeature("name");
String tname = (String)eo.eGet(sf);
String icn = null;
if(tname.equals("Boolean"))
icn = "java.lang.Boolean";
else if(tname.equals("Double"))
icn = "java.lang.Double";
else if(tname.equals("Float"))
icn = "java.lang.Float";
else if(tname.equals("Integer"))
icn = "java.lang.Integer";
else if(tname.equals("String"))
icn = "java.lang.String";
if(icn != null) {
sf = eo.eClass().getEStructuralFeature("instanceClassName");
eo.eSet(sf, icn);
}
}
}
/**
* Saves a model as a file to the given path.
*
* @param root
* Root of the objects to be serialized in a file.
* @param path
* File where the objects have to be saved.
* @throws IOException
* Thrown if an I/O operation has failed or been interrupted during the saving process.
*/
public static void save(EObject root, String path) throws IOException {
final URI modelURI = URI.createURI(path);
final ResourceSet resourceSet = new ResourceSetImpl();
resourceSet.getResourceFactoryRegistry().getExtensionToFactoryMap().put(
Resource.Factory.Registry.DEFAULT_EXTENSION, new XMIResourceFactoryImpl());
final Resource newModelResource = resourceSet.createResource(modelURI);
newModelResource.getContents().add(root);
final Map options = new ConcurrentHashMap();
options.put(XMLResource.OPTION_ENCODING, System.getProperty(ENCODING_PROPERTY));
newModelResource.save(options);
}
/**
* Serializes the given EObjet as a String.
*
* @param root
* Root of the objects to be serialized.
* @return The given EObjet serialized as a String.
* @throws IOException
* Thrown if an I/O operation has failed or been interrupted during the saving process.
*/
public static String serialize(EObject root) throws IOException {
if (root == null)
throw new NullPointerException("ModelUtils.NullSaveRoot"); //$NON-NLS-1$
final XMIResourceImpl newResource = new XMIResourceImpl();
final StringWriter writer = new StringWriter();
newResource.getContents().add(root);
newResource.save(writer, Collections.EMPTY_MAP);
return writer.toString();
}
/**
* Compare two ecore files as models.
*
* @param leftUri
* @param rightUri
* @throws IOException
* @throws InterruptedException
*/
public static void compareModels(File leftUri, File rightUri, boolean ignoreIds, boolean delete) throws Exception {
EObject leftModel = ModelUtils.load(leftUri, AtlTestPlugin.getResourceSet());
EObject rightModel = ModelUtils.load(rightUri,AtlTestPlugin.getResourceSet());
Map options = new HashMap();
if (ignoreIds) {
options.put(MatchOptions.OPTION_IGNORE_XMI_ID, Boolean.TRUE);
}
final MatchModel inputMatch = MatchService.doMatch(leftModel, rightModel, new NullProgressMonitor(), options);
final DiffModel inputDiff = new DiffMaker().doDiff(inputMatch);
if (((DiffGroup) inputDiff.getOwnedElements().get(0)).getSubchanges() != 0){
ModelInputSnapshot snapshot = DiffFactory.eINSTANCE.createModelInputSnapshot();
snapshot.setDiff(inputDiff);
snapshot.setMatch(inputMatch);
ModelUtils.save(snapshot, "file:/"+leftUri.toString()+".emfdiff");
throw new Exception("test failed : there are differences.");
}
if (delete) {
leftUri.delete();
}
}
}
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