/**
* 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.queries.iterators;
import org.whole.lang.bindings.BindingManagerFactory;
import org.whole.lang.iterators.IEntityIterator;
import org.whole.lang.model.IEntity;
import org.whole.lang.util.EntityUtils;
/**
* @author Riccardo Solmi
*/
public class CartesianUpdateIterator<E extends IEntity> extends AbstractCartesianIterator<E> {
protected CartesianUpdateIterator(IEntityIterator<? extends E> valuesIterator, IEntityIterator<E> toIterator) {
super(valuesIterator, toIterator);
}
@SuppressWarnings("unchecked")
protected E doLookahead(IEntity lastToEntity, E nextEntity) {
// try {
return (E) EntityUtils.convertCloneIfParented(nextEntity, EntityUtils.getFormalType(lastToEntity));
// } catch (ArrayIndexOutOfBoundsException e) {
// return null;
// }
}
protected void doNext(IEntity lastToEntity, E nextEntity) {
if (BindingManagerFactory.instance.isVoid(nextEntity))
return;
set(nextEntity);
}
@Override
public void toString(StringBuilder sb) {
sb.append("update(");
super.toString(sb);
sb.append(" x= ");
sb.append(valuesIterator.toString());
sb.append(")");
}
}