/*
* #%L
* gitools-core
* %%
* Copyright (C) 2013 Universitat Pompeu Fabra - Biomedical Genomics group
* %%
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as
* published by the Free Software Foundation, either version 3 of the
* License, or (at your option) any later version.
*
* This program 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public
* License along with this program. If not, see
* <http://www.gnu.org/licenses/gpl-3.0.html>.
* #L%
*/
package org.gitools.matrix.model.iterable;
import org.gitools.api.matrix.IMatrixFunction;
import java.util.Iterator;
public class TransformIterable<F, T> extends AbstractChainIterable<F, T> {
private IMatrixFunction<F, T> function;
public TransformIterable(AbstractIterable<T> parentIterable, IMatrixFunction<F, T> function) {
super(parentIterable);
this.function = function;
}
@Override
public Iterator<F> iterator() {
Iterator<F> iterator = new TransformIterator(newParentIterator());
function.onBeforeIterate(getParentIterable());
return iterator;
}
private class TransformIterator extends AbstractChainIterator<F, T> {
public TransformIterator(Iterator<T> parentIterator) {
super(parentIterator);
}
@Override
public synchronized boolean hasNext() {
if (!super.hasNext()) {
function.onAfterIterate(getParentIterable());
return false;
}
return true;
}
@Override
public synchronized F next() {
return function.apply(parentNext(), getPosition());
}
}
}