| /* |
| * $Id$ |
| * |
| * 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.tiles.request.collection; |
| |
| import java.util.Enumeration; |
| import java.util.Iterator; |
| |
| /** |
| * Copied and modified from Apache Commons Collections 3.2.1.<br> |
| * |
| * Adapter to make an {@link Iterator Iterator} instance appear to be an |
| * {@link Enumeration Enumeration} instance. |
| * |
| * @param <E> The type of the enumerated elements. |
| * @since Commons Collections 1.0 |
| * @version $Revision$ $Date: 2008-04-10 13:33:15 +0100 (Thu, 10 Apr |
| * 2008) $ |
| * |
| * @author <a href="mailto:jstrachan@apache.org">James Strachan</a> |
| */ |
| public class IteratorEnumeration<E> implements Enumeration<E> { |
| |
| /** The iterator being decorated. */ |
| private Iterator<E> iterator; |
| |
| /** |
| * Constructs a new <code>IteratorEnumeration</code> that will use the given |
| * iterator. |
| * |
| * @param iterator the iterator to use |
| */ |
| public IteratorEnumeration(Iterator<E> iterator) { |
| this.iterator = iterator; |
| } |
| |
| // Iterator interface |
| // ------------------------------------------------------------------------- |
| |
| /** |
| * Returns true if the underlying iterator has more elements. |
| * |
| * @return true if the underlying iterator has more elements |
| */ |
| public boolean hasMoreElements() { |
| return iterator.hasNext(); |
| } |
| |
| /** |
| * Returns the next element from the underlying iterator. |
| * |
| * @return the next element from the underlying iterator. |
| * @throws java.util.NoSuchElementException if the underlying iterator has |
| * no more elements |
| */ |
| public E nextElement() { |
| return iterator.next(); |
| } |
| |
| /** |
| * Returns the original iterator. |
| * |
| * @return The enumerated iterator. |
| */ |
| public Iterator<E> getIterator() { |
| return iterator; |
| } |
| } |