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/***************************************************************************
* Copyright (c) 2004-2007 Eike Stepper, Germany.
* 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:
* Eike Stepper - initial API and implementation
**************************************************************************/
package org.eclipse.emf.cdo.util;
import org.eclipse.net4j.util.io.IORuntimeException;
import org.eclipse.emf.common.util.EList;
import org.eclipse.emf.ecore.EClass;
import org.eclipse.emf.ecore.EClassifier;
import org.eclipse.emf.ecore.EDataType;
import org.eclipse.emf.ecore.EEnum;
import org.eclipse.emf.ecore.EPackage;
import org.eclipse.emf.ecore.EReference;
import org.eclipse.emf.ecore.EStructuralFeature;
import org.eclipse.emf.ecore.impl.EClassifierImpl;
import org.eclipse.emf.ecore.impl.EPackageImpl;
import org.eclipse.emf.ecore.xmi.XMIResource;
import org.eclipse.emf.ecore.xmi.impl.XMIResourceImpl;
import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.util.ArrayList;
import java.util.Iterator;
import java.util.List;
/**
* @author Eike Stepper
*/
public final class EMFUtil
{
private static final String ECORE_ENCODING = "ASCII";
private EMFUtil()
{
}
public static List<EClass> getPersistentClasses(EPackage ePackage)
{
List<EClass> result = new ArrayList();
for (EClassifier classifier : ePackage.getEClassifiers())
{
if (classifier instanceof EClass)
{
result.add((EClass)classifier);
}
}
return result;
}
public static List<EStructuralFeature> getPersistentFeatures(EList<EStructuralFeature> eFeatues)
{
List<EStructuralFeature> result = new ArrayList();
for (EStructuralFeature feature : eFeatues)
{
if (!feature.isTransient())
{
result.add(feature);
}
}
return result;
}
public static boolean isDynamicEPackage(Object value)
{
return value.getClass() == EPackageImpl.class;
}
public static boolean isMany(EStructuralFeature eFeature)
{
return eFeature.isMany();
}
public static boolean isReference(EStructuralFeature eFeature)
{
return eFeature instanceof EReference;
}
public static boolean isContainment(EStructuralFeature eFeature)
{
if (isReference(eFeature))
{
EReference ref = (EReference)eFeature;
return ref.isContainment();
}
return false;
}
public static EPackage ePackageFromString(String ecore)
{
try
{
ByteArrayInputStream stream = new ByteArrayInputStream(ecore.getBytes(ECORE_ENCODING));
XMIResource resource = new XMIResourceImpl();
resource.load(stream, null);
return (EPackage)resource.getContents().get(0);
}
catch (RuntimeException ex)
{
throw ex;
}
catch (IOException ex)
{
throw new IORuntimeException(ex);
}
}
public static String ePackageToString(EPackage ePackage)
{
ByteArrayOutputStream stream = new ByteArrayOutputStream();
XMIResource resource = new XMIResourceImpl();
try
{
resource.getContents().add(ePackage);
resource.save(stream, null);
return stream.toString(ECORE_ENCODING);
}
catch (RuntimeException ex)
{
throw ex;
}
catch (IOException ex)
{
throw new IORuntimeException(ex);
}
finally
{
resource.getContents().clear();
}
}
/**
* TODO Remove when EMF has fixed this
*/
public static void fixEClassifiers(EPackageImpl ePackage)
{
int id = 0;
for (Iterator<EClassifier> i = ePackage.getEClassifiers().iterator(); i.hasNext();)
{
EClassifierImpl eClassifier = (EClassifierImpl)i.next();
if (eClassifier instanceof EClass)
{
eClassifier.setClassifierID(id++);
}
}
for (Iterator<EClassifier> i = ePackage.getEClassifiers().iterator(); i.hasNext();)
{
EClassifierImpl eClassifier = (EClassifierImpl)i.next();
if (eClassifier.getClassifierID() == -1 && eClassifier instanceof EEnum)
{
eClassifier.setClassifierID(id++);
}
}
for (Iterator<EClassifier> i = ePackage.getEClassifiers().iterator(); i.hasNext();)
{
EClassifierImpl eClassifier = (EClassifierImpl)i.next();
if (eClassifier.getClassifierID() == -1 && eClassifier instanceof EDataType)
{
eClassifier.setClassifierID(id++);
}
}
// try
// {
// Method method = EPackageImpl.class.getDeclaredMethod("fixEClassifiers",
// ReflectUtil.NO_PARAMETERS);
// if (!method.isAccessible())
// {
// method.setAccessible(true);
// }
//
// method.invoke(ePackage, ReflectUtil.NO_ARGUMENTS);
// }
// catch (Exception ex)
// {
// OM.LOG.error(ex);
// }
}
// public static List<Change> analyzeListDifferences(CDORevisionImpl
// oldRevision,
// CDORevisionImpl newRevision, CDOFeatureImpl feature)
// {
// if (!feature.isMany())
// {
// throw new IllegalArgumentException("Feature is not many: " + feature);
// }
//
// final List<Object> oldList = (List)oldRevision.getValue(feature);
// final List newList = (List)newRevision.getValue(feature);
// final List<Change> changes = new ArrayList(0);
//
// new ECollections.ListDifferenceAnalyzer()
// {
// @Override
// protected void add(List<Object> oldList, Object newObject, int index)
// {
// changes.add(new AddChange(newObject, index));
// }
//
// @Override
// protected void remove(List<?> oldList, int index)
// {
// changes.add(new RemoveChange(index));
// }
//
// @Override
// protected void move(List<?> oldList, int index, int toIndex)
// {
// changes.add(new MoveChange(index, toIndex));
// }
// }.createListChanges(oldList, newList);
//
// return changes;
// }
//
// /**
// * @author Eike Stepper
// */
// public static class MoveChange implements FeatureChange
// {
// public MoveChange(int index, int toIndex)
// {
// }
// }
//
// /**
// * @author Eike Stepper
// */
// public static class RemoveChange implements FeatureChange
// {
// public RemoveChange(int index)
// {
// }
// }
//
// /**
// * @author Eike Stepper
// */
// public static class AddChange implements FeatureChange
// {
// public AddChange(Object newObject, int index)
// {
// }
// }
}
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