Coverage Report - org.apache.tiles.request.collection.CollectionUtil
 
Classes in this File Line Coverage Branch Coverage Complexity
CollectionUtil
83%
10/12
100%
6/6
2.667
 
 1  
 /*
 2  
  * $Id: CollectionUtil.java 1229087 2012-01-09 10:35:14Z mck $
 3  
  *
 4  
  * Licensed to the Apache Software Foundation (ASF) under one
 5  
  * or more contributor license agreements.  See the NOTICE file
 6  
  * distributed with this work for additional information
 7  
  * regarding copyright ownership.  The ASF licenses this file
 8  
  * to you under the Apache License, Version 2.0 (the
 9  
  * "License"); you may not use this file except in compliance
 10  
  * with the License.  You may obtain a copy of the License at
 11  
  *
 12  
  * http://www.apache.org/licenses/LICENSE-2.0
 13  
  *
 14  
  * Unless required by applicable law or agreed to in writing,
 15  
  * software distributed under the License is distributed on an
 16  
  * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 17  
  * KIND, either express or implied.  See the License for the
 18  
  * specific language governing permissions and limitations
 19  
  * under the License.
 20  
  */
 21  
 package org.apache.tiles.request.collection;
 22  
 
 23  
 import java.util.Enumeration;
 24  
 
 25  
 /**
 26  
  * Utilities for requests.
 27  
  *
 28  
  * @version $Rev: 1064782 $ $Date: 2011-01-28 18:08:52 +0100 (Fri, 28 Jan 2011) $
 29  
  */
 30  
 public final class CollectionUtil {
 31  
 
 32  
     /**
 33  
      * Constructor.
 34  
      */
 35  0
     private CollectionUtil() {
 36  
 
 37  0
     }
 38  
 
 39  
     /**
 40  
      * Returns the string representation of the key.
 41  
      *
 42  
      * @param key The key.
 43  
      * @return The string representation of the key.
 44  
      * @throws IllegalArgumentException If the key is <code>null</code>.
 45  
      */
 46  
     public static String key(Object key) {
 47  33
         if (key == null) {
 48  1
             throw new IllegalArgumentException();
 49  32
         } else if (key instanceof String) {
 50  31
             return ((String) key);
 51  
         } else {
 52  1
             return (key.toString());
 53  
         }
 54  
     }
 55  
 
 56  
     /**
 57  
      * Returns the number of elements in an enumeration, by iterating it.
 58  
      *
 59  
      * @param keys The enumeration.
 60  
      * @return The number of elements.
 61  
      */
 62  
     public static int enumerationSize(Enumeration<?> keys) {
 63  8
         int n = 0;
 64  24
         while (keys.hasMoreElements()) {
 65  16
             keys.nextElement();
 66  16
             n++;
 67  
         }
 68  8
         return n;
 69  
     }
 70  
 }