/**
* Copyright 2004-2016 Riccardo Solmi. All rights reserved.
* This file is part of the Whole Platform.
*
* The Whole Platform is free software: you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* The Whole Platform is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with the Whole Platform. If not, see <http://www.gnu.org/licenses/>.
*/
package org.whole.lang.util;
import java.util.HashSet;
import java.util.List;
import java.util.Set;
import org.whole.lang.model.IEntity;
import org.whole.lang.reflect.EntityDescriptor;
import org.whole.lang.reflect.EntityKinds;
import org.whole.lang.reflect.FeatureDescriptor;
/**
* @author Riccardo Solmi
*/
public class DefaultCopyTransformer implements IEntityTransformer {
public static final DefaultCopyTransformer instance = new DefaultCopyTransformer();
public void transform(IEntity oldEntity, IEntity newEntity) {
// if (newEntity.wGetEntityDescriptor().equals(oldEntity.wGetEntityDescriptor()))
// return;
EntityKinds oldKind = oldEntity.wGetEntityKind();
EntityKinds newKind = newEntity.wGetEntityKind();
if ((oldKind.isSimple() && newKind.isSimple()) ||
(EntityUtils.isVariable(oldEntity) && EntityUtils.isVariable(newEntity))) { //TODO workaround
List<FeatureDescriptor> oldFeatures = oldEntity.wGetEntityDescriptor().getEntityFeatureDescriptors();
Set<FeatureDescriptor> commonFeatures = new HashSet<FeatureDescriptor>();
for (FeatureDescriptor fd : newEntity.wGetEntityDescriptor().getEntityFeatureDescriptors())
if (oldFeatures.contains(fd.getFeatureDescriptor()))
commonFeatures.add(fd);
for (FeatureDescriptor fd : commonFeatures) {
IEntity oldChild = oldEntity.wGet(fd.getFeatureDescriptor());
if (fd.getEntityDescriptor().isPlatformSupertypeOf(oldChild.wGetEntityDescriptor()))
newEntity.wSet(fd, EntityUtils.clone(oldChild));
}
} else if (oldKind.isComposite() && newKind.isComposite()) {
EntityDescriptor<?> newComponentDescriptor = newEntity.wGetEntityDescriptor(0);
for (int i=0, size=oldEntity.wSize(); i<size; i++) {
IEntity oldChild = oldEntity.wGet(i);
if (newComponentDescriptor.isPlatformSupertypeOf(oldChild.wGetEntityDescriptor()))
newEntity.wSet(i, EntityUtils.clone(oldChild));
}
} else if (EntityUtils.isFragment(oldEntity) && EntityUtils.isFragment(newEntity)) { //TODO workaround
newEntity.wSet(0, EntityUtils.clone(oldEntity.wGet(0)));
}
}
}