001/*
002 * Licensed to the Apache Software Foundation (ASF) under one or more
003 * contributor license agreements.  See the NOTICE file distributed with
004 * this work for additional information regarding copyright ownership.
005 * The ASF licenses this file to You under the Apache License, Version 2.0
006 * (the "License"); you may not use this file except in compliance with
007 * the License.  You may obtain a copy of the License at
008 *
009 *      http://www.apache.org/licenses/LICENSE-2.0
010 *
011 * Unless required by applicable law or agreed to in writing, software
012 * distributed under the License is distributed on an "AS IS" BASIS,
013 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
014 * See the License for the specific language governing permissions and
015 * limitations under the License.
016 */
017package org.apache.juneau.swaps;
018
019import java.util.*;
020
021import org.apache.juneau.*;
022import org.apache.juneau.swap.*;
023
024/**
025 * Transforms {@link Iterator Iterators} to {@code List<Object>} objects.
026 *
027 * <p>
028 * This is a one-way transform, since {@code Iterators} cannot be reconstituted.
029 *
030 * <h5 class='section'>See Also:</h5><ul>
031 *    <li class='link'><a class="doclink" href="https://juneau.apache.org/docs/topics/SwapBasics">Swap Basics</a>
032
033 * </ul>
034 */
035@SuppressWarnings({"unchecked","rawtypes"})
036public class IteratorSwap extends ObjectSwap<Iterator,List> {
037
038   /**
039    * Converts the specified {@link Iterator} to a {@link List}.
040    */
041   @Override /* ObjectSwap */
042   public List swap(BeanSession session, Iterator o) {
043      List l = new LinkedList();
044      while (o.hasNext())
045         l.add(o.next());
046      return l;
047   }
048}