001// ***************************************************************************************************************************
002// * Licensed to the Apache Software Foundation (ASF) under one or more contributor license agreements.  See the NOTICE file *
003// * distributed with this work for additional information regarding copyright ownership.  The ASF licenses this file        *
004// * to you under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance            *
005// * with the License.  You may obtain a copy of the License at                                                              *
006// *                                                                                                                         *
007// *  http://www.apache.org/licenses/LICENSE-2.0                                                                             *
008// *                                                                                                                         *
009// * Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on an  *
010// * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.  See the License for the        *
011// * specific language governing permissions and limitations under the License.                                              *
012// ***************************************************************************************************************************
013package org.apache.juneau.swaps;
014
015import static org.apache.juneau.internal.CollectionUtils.*;
016
017import java.util.*;
018import java.util.regex.*;
019
020import org.apache.juneau.*;
021import org.apache.juneau.swap.*;
022
023/**
024 * Transforms {@link MatchResult MatchResults} to {@code List} objects.
025 *
026 * <p>
027 * Entries in the list represent matched groups in a regular expression.
028 *
029 * <h5 class='section'>See Also:</h5><ul>
030 *    <li class='link'><a class="doclink" href="../../../../index.html#jm.Swaps">Swaps</a>
031
032 * </ul>
033 */
034public class MatchResultSwap extends ObjectSwap<MatchResult,List<String>> {
035
036   /**
037    * Converts the specified {@link Enumeration} to a {@link List}.
038    */
039   @Override /* ObjectSwap */
040   public List<String> swap(BeanSession session, MatchResult o) {
041      List<String> l = list(o.groupCount());
042      for (int i = 0; i <= o.groupCount(); i++)
043         l.add(o.group(i));
044      return l;
045   }
046}