/*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing,
* software distributed under the License is distributed on an
* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
* KIND, either express or implied. See the License for the
* specific language governing permissions and limitations
* under the License.
*/
package org.apache.ode.utils.stl;
import java.util.Iterator;
/**
* Transforming {@link Iterator} implementation; these iterators apply a unary
* function to each object before it is returned.
*
* <p>
* Created on Feb 4, 2004 at 4:48:14 PM.
* </p>
*
* @author Maciej Szefler <a href="mailto:mbs@fivesight.com">mbs</a>
*/
public class TransformIterator<E,V> implements Iterator<V> {
private UnaryFunction<E,V> _txform;
private Iterator<E> _i;
public TransformIterator(Iterator<E> i, UnaryFunction<E,V> txForm) {
_i = i;
_txform = txForm;
}
/**
* DOCUMENTME
*
* @return DOCUMENTME
*/
public boolean hasNext() {
return _i.hasNext();
}
/**
* DOCUMENTME
*
* @return DOCUMENTME
*/
public V next() {
return _txform.apply(_i.next());
}
/**
* DOCUMENTME
*/
public void remove() {
_i.remove();
}
}