Coverage report

  %line %branch
org.apache.commons.configuration.ConfigurationMap$ConfigurationSet
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 1  
 /*
 2  
  * Copyright 2004-2005 The Apache Software Foundation.
 3  
  *
 4  
  * Licensed under the Apache License, Version 2.0 (the "License")
 5  
  * you may not use this file except in compliance with the License.
 6  
  * You may obtain a copy of the License at
 7  
  *
 8  
  *     http://www.apache.org/licenses/LICENSE-2.0
 9  
  *
 10  
  * Unless required by applicable law or agreed to in writing, software
 11  
  * distributed under the License is distributed on an "AS IS" BASIS,
 12  
  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 13  
  * See the License for the specific language governing permissions and
 14  
  * limitations under the License.
 15  
  */
 16  
 
 17  
 package org.apache.commons.configuration;
 18  
 
 19  
 import java.util.AbstractMap;
 20  
 import java.util.AbstractSet;
 21  
 import java.util.Iterator;
 22  
 import java.util.Map;
 23  
 import java.util.Set;
 24  
 
 25  
 /**
 26  
  * <p>The <code>ConfigurationMap</code> wraps a
 27  
  * configuration-collection
 28  
  * {@link org.apache.commons.configuration.Configuration}
 29  
  * instance to provide a <code>Map</code> interface.</p>
 30  
  *
 31  
  * <p><em>Note:</em> This implementation is incomplete.</p>
 32  
  *
 33  
  * @author <a href="mailto:ricardo.gladwell@btinternet.com">Ricardo Gladwell</a>
 34  
  * @version $Revision$, $Date: 2005-12-06 04:10:27 +0100 (Tue, 06 Dec 2005) $
 35  
  * @since 1.0
 36  
  */
 37  
 public class ConfigurationMap extends AbstractMap
 38  
 {
 39  
     /**
 40  
      * The <code>Configuration</code> wrapped by this class.
 41  
      */
 42  
     private Configuration configuration;
 43  
 
 44  
     /**
 45  
      * Creates a new instance of a <code>ConfigurationMap</code>
 46  
      * that wraps the specified <code>Configuration</code>
 47  
      * instance.
 48  
      * @param configuration <code>Configuration</code>
 49  
      * instance.
 50  
      */
 51  
     public ConfigurationMap(Configuration configuration)
 52  
     {
 53  
         this.configuration = configuration;
 54  
     }
 55  
 
 56  
     /**
 57  
      * Returns the wrapped <code>Configuration</code> object.
 58  
      *
 59  
      * @return the wrapped configuration
 60  
      * @since 1.2
 61  
      */
 62  
     public Configuration getConfiguration()
 63  
     {
 64  
         return configuration;
 65  
     }
 66  
 
 67  
     /**
 68  
      * @see java.util.Map#entrySet()
 69  
      */
 70  
     public Set entrySet()
 71  
     {
 72  
         return new ConfigurationSet(configuration);
 73  
     }
 74  
 
 75  
     /**
 76  
      * @see java.util.Map#put(java.lang.Object, java.lang.Object)
 77  
      */
 78  
     public Object put(Object key, Object value)
 79  
     {
 80  
         String strKey = String.valueOf(key);
 81  
         Object old = configuration.getProperty(strKey);
 82  
         configuration.setProperty(strKey, value);
 83  
         return old;
 84  
     }
 85  
 
 86  
     /**
 87  
      * @see java.util.Map#get(java.lang.Object)
 88  
      */
 89  
     public Object get(Object key)
 90  
     {
 91  
         return configuration.getProperty(String.valueOf(key));
 92  
     }
 93  
 
 94  8
     /**
 95  
      * Set of entries in the map.
 96  
      */
 97  16
     static class ConfigurationSet extends AbstractSet
 98  
     {
 99  
         /** The configuration mapped to this entry set. */
 100  
         private Configuration configuration;
 101  
 
 102  
         /**
 103  
          * A Map entry in the ConfigurationMap.
 104  
          */
 105  
         private final class Entry implements Map.Entry
 106  
         {
 107  
             /** The key of the map entry. */
 108  
             private Object key;
 109  
 
 110  
             private Entry(Object key)
 111  
             {
 112  
                 this.key = key;
 113  
             }
 114  
 
 115  
             public Object getKey()
 116  
             {
 117  
                 return key;
 118  
             }
 119  
 
 120  
             public Object getValue()
 121  
             {
 122  
                 return configuration.getProperty((String) key);
 123  
             }
 124  
 
 125  
             public Object setValue(Object value)
 126  
             {
 127  
                 Object old = getValue();
 128  
                 configuration.setProperty((String) key, value);
 129  
                 return old;
 130  
             }
 131  
         }
 132  
 
 133  
         /**
 134  
          * Iterator over the entries in the ConfigurationMap.
 135  
          */
 136  
         private final class ConfigurationSetIterator implements Iterator
 137  
         {
 138  
             /** An iterator over the keys in the configuration. */
 139  
             private Iterator keys;
 140  
 
 141  
             private ConfigurationSetIterator()
 142  
             {
 143  
                 keys = configuration.getKeys();
 144  
             }
 145  
 
 146  
             public boolean hasNext()
 147  
             {
 148  
                 return keys.hasNext();
 149  
             }
 150  
 
 151  
             public Object next()
 152  
             {
 153  2
                 return new Entry(keys.next());
 154  2
             }
 155  2
 
 156  
             public void remove()
 157  
             {
 158  
                 keys.remove();
 159  
             }
 160  
         }
 161  
 
 162  
         ConfigurationSet(Configuration configuration)
 163  6
         {
 164  15
             this.configuration = configuration;
 165  4
         }
 166  7
 
 167  7
         /**
 168  
          * @see java.util.Collection#size()
 169  2
          */
 170  
         public int size()
 171  
         {
 172  
             // Ouch. Now _that_ one is expensive...
 173  4
             int count = 0;
 174  22
             for (Iterator iterator = configuration.getKeys(); iterator.hasNext();)
 175  
             {
 176  14
                 iterator.next();
 177  15
                 count++;
 178  
             }
 179  4
             return count;
 180  
         }
 181  
 
 182  
         /**
 183  
          * @see java.util.Collection#iterator()
 184  
          */
 185  
         public Iterator iterator()
 186  
         {
 187  2
             return new ConfigurationSetIterator();
 188  
         }
 189  
     }
 190  
 }

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