Coverage report

  %line %branch
org.apache.commons.configuration.ConfigurationMap$ConfigurationSet$Entry
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 1  
 /*
 2  
  * Copyright 2001-2004 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  
 /**
 27  
  * <p>The <code>ConfigurationMap</code> wraps a
 28  
  * configuration-collection
 29  
  * {@link org.apache.commons.configuration.Configuration}
 30  
  * instance to provide a <code>Map</code> interface.</p>
 31  
  *
 32  
  * @todo This implementation is incomplete. 
 33  
  *
 34  
  * @author <a href="mailto:ricardo.gladwell@btinternet.com">Ricardo Gladwell</a>
 35  
  */
 36  
 
 37  
 public class ConfigurationMap
 38  
         extends AbstractMap
 39  
 {
 40  
 
 41  
     /**
 42  
      * The <code>Configuration</code> wrapped by this class.
 43  
      */
 44  
     Configuration configuration = null;
 45  
 
 46  
     /**
 47  
      * Creates a new instance of a <code>ConfigurationMap</code>
 48  
      * that wraps the specified <code>Configuration</code>
 49  
      * instance.
 50  
      * @param configuration <code>Configuration</code>
 51  
      * instance.
 52  
      */
 53  
     public ConfigurationMap(Configuration configuration)
 54  
     {
 55  
         this.configuration = configuration;
 56  
     }
 57  
 
 58  
     /**
 59  
      * @see java.util.Map#entrySet()
 60  
      */
 61  
     public Set entrySet()
 62  
     {
 63  
         return new ConfigurationSet(configuration);
 64  
     }
 65  
 
 66  
     /**
 67  
      * @see java.util.Map#put(java.lang.Object, java.lang.Object)
 68  
      */
 69  
     public Object put(Object key, Object value)
 70  
     {
 71  
         String strKey = String.valueOf(key);
 72  
         Object old = configuration.getProperty(strKey);
 73  
         configuration.setProperty(strKey, value);
 74  
         return old;
 75  
     }
 76  
 
 77  
     /**
 78  
      * @see java.util.Map#get(java.lang.Object)
 79  
      */
 80  
     public Object get(Object key)
 81  
     {
 82  
         return configuration.getProperty(String.valueOf(key));
 83  
     }
 84  
 
 85  
     static class ConfigurationSet
 86  
             extends AbstractSet
 87  
     {
 88  
         private Configuration configuration = null;
 89  
 
 90  7
         private class Entry
 91  
                 implements Map.Entry
 92  
         {
 93  7
             private Object key = null;
 94  
             
 95  
             private Entry(Object key)
 96  7
             {
 97  7
                 this.key = key;
 98  7
             }
 99  
             
 100  
             public Object getKey()
 101  
             {
 102  56
                 return key;
 103  
             }
 104  
             
 105  
             public Object getValue()
 106  
             {
 107  7
                 return configuration.getProperty((String) key);
 108  
             }
 109  
 
 110  
             public Object setValue(Object value)
 111  
             {
 112  0
                 Object old = getValue();
 113  0
                 configuration.setProperty((String) key, value);
 114  0
                 return old;
 115  
             }
 116  
 
 117  
         }
 118  
 
 119  
         private class ConfigurationSetIterator
 120  
                 implements Iterator
 121  
         {
 122  
             private Iterator keys;
 123  
 
 124  
             private ConfigurationSetIterator()
 125  
             {
 126  
                 keys = configuration.getKeys();
 127  
             }
 128  
 
 129  
             public boolean hasNext()
 130  
             {
 131  
                 return keys.hasNext();
 132  
             }
 133  
 
 134  
             public Object next()
 135  
             {
 136  
                 return new Entry(keys.next());
 137  
             }
 138  
 
 139  
             public void remove()
 140  
             {
 141  
                 keys.remove();
 142  
             }
 143  
 
 144  
         }
 145  
 
 146  
         ConfigurationSet(Configuration configuration)
 147  
         {
 148  
             this.configuration = configuration;
 149  
         }
 150  
 
 151  
         /**
 152  
          * @see java.util.Collection#size()
 153  
          */
 154  
         public int size()
 155  
         {
 156  
             // Ouch. Now _that_ one is expensive...
 157  
             int count = 0;
 158  
             for (Iterator iterator = configuration.getKeys(); iterator.hasNext(); )
 159  
             {
 160  
                 iterator.next();
 161  
                 count++;
 162  
             }
 163  
             return count;
 164  
         }
 165  
 
 166  
         /**
 167  
          * @see java.util.Collection#iterator()
 168  
          */
 169  
         public Iterator iterator()
 170  
         {
 171  
             return new ConfigurationSetIterator();
 172  
         }
 173  
     }
 174  
 }

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