Core/Castle.Core/ReflectionBasedDictionaryAdapter.cs

   1 // Copyright 2004-2008 Castle Project - http://www.castleproject.org/
   2 //
   3 // Licensed under the Apache License, Version 2.0 (the "License");
   4 // you may not use this file except in compliance with the License.
   5 // You may obtain a copy of the License at
   6 //
   7 //     http://www.apache.org/licenses/LICENSE-2.0
   8 //
   9 // Unless required by applicable law or agreed to in writing, software
  10 // distributed under the License is distributed on an "AS IS" BASIS,
  11 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  12 // See the License for the specific language governing permissions and
  13 // limitations under the License.
  14
  15 namespace Castle.Core
  16 {
  17         using System;
  18         using System.Collections;
  19         using System.Reflection;
  20         using System.Collections.Generic;
  21
  22         /// <summary>
  23         /// Pendent
  24         /// </summary>
  25         public class ReflectionBasedDictionaryAdapter : IDictionary
  26         {
  27                 private readonly Dictionary<string,object> properties = new Dictionary<string, object>(StringComparer.InvariantCultureIgnoreCase);
  28
  29                 /// <summary>
  30                 /// Initializes a new instance of the <see cref="ReflectionBasedDictionaryAdapter"/> class.
  31                 /// </summary>
  32                 /// <param name="target">The target.</param>
  33                 public ReflectionBasedDictionaryAdapter(object target)
  34                 {
  35                         if (target == null)
  36                         {
  37                                 throw new ArgumentNullException("target");
  38                         }
  39
  40                         Type targetType = target.GetType();
  41
  42                         foreach(PropertyInfo property in targetType.GetProperties(BindingFlags.Public | BindingFlags.Instance))
  43                         {
  44                                 if (!property.CanRead) continue;
  45                                 object value = property.GetValue(target, null);
  46
  47                                 properties[property.Name] = value;
  48                         }
  49                 }
  50
  51                 /// <summary>
  52                 /// Determines whether the <see cref="T:System.Collections.IDictionary"/> object contains an element with the specified key.
  53                 /// </summary>
  54                 /// <param name="key">The key to locate in the <see cref="T:System.Collections.IDictionary"/> object.</param>
  55                 /// <returns>
  56                 /// true if the <see cref="T:System.Collections.IDictionary"/> contains an element with the key; otherwise, false.
  57                 /// </returns>
  58                 /// <exception cref="T:System.ArgumentNullException">
  59                 ///     <paramref name="key"/> is null. </exception>
  60                 public bool Contains(object key)
  61                 {
  62                         return properties.ContainsKey(key.ToString());
  63                 }
  64
  65                 /// <summary>
  66                 /// Gets or sets the <see cref="System.Object"/> with the specified key.
  67                 /// </summary>
  68                 /// <value></value>
  69                 public object this[object key]
  70                 {
  71                         get
  72                         {
  73                                 object value;
  74                                 properties.TryGetValue(key.ToString(), out value);
  75                                 return value;
  76                         }
  77                         set { throw new NotImplementedException(); }
  78                 }
  79
  80                 /// <summary>
  81                 /// Adds an element with the provided key and value to the <see cref="T:System.Collections.IDictionary"/> object.
  82                 /// </summary>
  83                 /// <param name="key">The <see cref="T:System.Object"/> to use as the key of the element to add.</param>
  84                 /// <param name="value">The <see cref="T:System.Object"/> to use as the value of the element to add.</param>
  85                 /// <exception cref="T:System.ArgumentNullException">
  86                 ///     <paramref name="key"/> is null. </exception>
  87                 /// <exception cref="T:System.ArgumentException">An element with the same key already exists in the <see cref="T:System.Collections.IDictionary"/> object. </exception>
  88                 /// <exception cref="T:System.NotSupportedException">The <see cref="T:System.Collections.IDictionary"/> is read-only.-or- The <see cref="T:System.Collections.IDictionary"/> has a fixed size. </exception>
  89                 public void Add(object key, object value)
  90                 {
  91                         throw new NotImplementedException();
  92                 }
  93
  94                 /// <summary>
  95                 /// Removes all elements from the <see cref="T:System.Collections.IDictionary"/> object.
  96                 /// </summary>
  97                 /// <exception cref="T:System.NotSupportedException">The <see cref="T:System.Collections.IDictionary"/> object is read-only. </exception>
  98                 public void Clear()
  99                 {
 100                         throw new NotImplementedException();
 101                 }
 102
 103                 /// <summary>
 104                 /// Returns an <see cref="T:System.Collections.IDictionaryEnumerator"/> object for the <see cref="T:System.Collections.IDictionary"/> object.
 105                 /// </summary>
 106                 /// <returns>
 107                 /// An <see cref="T:System.Collections.IDictionaryEnumerator"/> object for the <see cref="T:System.Collections.IDictionary"/> object.
 108                 /// </returns>
 109                 IDictionaryEnumerator IDictionary.GetEnumerator()
 110                 {
 111                         return new DictionaryEntryEnumeratorAdapter( properties.GetEnumerator() );
 112                 }
 113
 114                 /// <summary>
 115                 /// Removes the element with the specified key from the <see cref="T:System.Collections.IDictionary"/> object.
 116                 /// </summary>
 117                 /// <param name="key">The key of the element to remove.</param>
 118                 /// <exception cref="T:System.ArgumentNullException">
 119                 ///     <paramref name="key"/> is null. </exception>
 120                 /// <exception cref="T:System.NotSupportedException">The <see cref="T:System.Collections.IDictionary"/> object is read-only.-or- The <see cref="T:System.Collections.IDictionary"/> has a fixed size. </exception>
 121                 public void Remove(object key)
 122                 {
 123                 }
 124
 125                 /// <summary>
 126                 /// Gets an <see cref="T:System.Collections.ICollection"/> object containing the keys of the <see cref="T:System.Collections.IDictionary"/> object.
 127                 /// </summary>
 128                 /// <value></value>
 129                 /// <returns>An <see cref="T:System.Collections.ICollection"/> object containing the keys of the <see cref="T:System.Collections.IDictionary"/> object.</returns>
 130                 public ICollection Keys
 131                 {
 132                         get { return properties.Keys; }
 133                 }
 134
 135                 /// <summary>
 136                 /// Gets an <see cref="T:System.Collections.ICollection"/> object containing the values in the <see cref="T:System.Collections.IDictionary"/> object.
 137                 /// </summary>
 138                 /// <value></value>
 139                 /// <returns>An <see cref="T:System.Collections.ICollection"/> object containing the values in the <see cref="T:System.Collections.IDictionary"/> object.</returns>
 140                 public ICollection Values
 141                 {
 142                         get { return properties.Values; }
 143                 }
 144
 145                 /// <summary>
 146                 /// Gets a value indicating whether the <see cref="T:System.Collections.IDictionary"/> object is read-only.
 147                 /// </summary>
 148                 /// <value></value>
 149                 /// <returns>true if the <see cref="T:System.Collections.IDictionary"/> object is read-only; otherwise, false.</returns>
 150                 public bool IsReadOnly
 151                 {
 152                         get { return true; }
 153                 }
 154
 155                 /// <summary>
 156                 /// Gets a value indicating whether the <see cref="T:System.Collections.IDictionary"/> object has a fixed size.
 157                 /// </summary>
 158                 /// <value></value>
 159                 /// <returns>true if the <see cref="T:System.Collections.IDictionary"/> object has a fixed size; otherwise, false.</returns>
 160                 public bool IsFixedSize
 161                 {
 162                         get { throw new NotImplementedException(); }
 163                 }
 164
 165                 /// <summary>
 166                 /// Copies the elements of the <see cref="T:System.Collections.ICollection"/> to an <see cref="T:System.Array"/>, starting at a particular <see cref="T:System.Array"/> index.
 167                 /// </summary>
 168                 /// <param name="array">The one-dimensional <see cref="T:System.Array"/> that is the destination of the elements copied from <see cref="T:System.Collections.ICollection"/>. The <see cref="T:System.Array"/> must have zero-based indexing.</param>
 169                 /// <param name="index">The zero-based index in <paramref name="array"/> at which copying begins.</param>
 170                 /// <exception cref="T:System.ArgumentNullException">
 171                 ///     <paramref name="array"/> is null. </exception>
 172                 /// <exception cref="T:System.ArgumentOutOfRangeException">
 173                 ///     <paramref name="index"/> is less than zero. </exception>
 174                 /// <exception cref="T:System.ArgumentException">
 175                 ///     <paramref name="array"/> is multidimensional.-or- <paramref name="index"/> is equal to or greater than the length of <paramref name="array"/>.-or- The number of elements in the source <see cref="T:System.Collections.ICollection"/> is greater than the available space from <paramref name="index"/> to the end of the destination <paramref name="array"/>. </exception>
 176                 /// <exception cref="T:System.ArgumentException">The type of the source <see cref="T:System.Collections.ICollection"/> cannot be cast automatically to the type of the destination <paramref name="array"/>. </exception>
 177                 public void CopyTo(Array array, int index)
 178                 {
 179                         throw new NotImplementedException();
 180                 }
 181
 182                 /// <summary>
 183                 /// Gets the number of elements contained in the <see cref="T:System.Collections.ICollection"/>.
 184                 /// </summary>
 185                 /// <value></value>
 186                 /// <returns>The number of elements contained in the <see cref="T:System.Collections.ICollection"/>.</returns>
 187                 public int Count
 188                 {
 189                         get { return properties.Count; }
 190                 }
 191
 192                 /// <summary>
 193                 /// Gets an object that can be used to synchronize access to the <see cref="T:System.Collections.ICollection"/>.
 194                 /// </summary>
 195                 /// <value></value>
 196                 /// <returns>An object that can be used to synchronize access to the <see cref="T:System.Collections.ICollection"/>.</returns>
 197                 public object SyncRoot
 198                 {
 199                         get { return properties; }
 200                 }
 201
 202                 /// <summary>
 203                 /// Gets a value indicating whether access to the <see cref="T:System.Collections.ICollection"/> is synchronized (thread safe).
 204                 /// </summary>
 205                 /// <value></value>
 206                 /// <returns>true if access to the <see cref="T:System.Collections.ICollection"/> is synchronized (thread safe); otherwise, false.</returns>
 207                 public bool IsSynchronized
 208                 {
 209                         get { return false; }
 210                 }
 211
 212                 /// <summary>
 213                 /// Returns an enumerator that iterates through a collection.
 214                 /// </summary>
 215                 /// <returns>
 216                 /// An <see cref="T:System.Collections.IEnumerator"/> object that can be used to iterate through the collection.
 217                 /// </returns>
 218                 public IEnumerator GetEnumerator()
 219                 {
 220                         return new DictionaryEntryEnumeratorAdapter( properties.GetEnumerator() );
 221                 }
 222
 223                 class DictionaryEntryEnumeratorAdapter : IDictionaryEnumerator
 224                 {
 225                         private readonly IDictionaryEnumerator enumerator;
 226                         private KeyValuePair<string, object> current;
 227
 228                         public DictionaryEntryEnumeratorAdapter(IDictionaryEnumerator enumerator)
 229                         {
 230                                 this.enumerator = enumerator;
 231                         }
 232
 233                         public object Key
 234                         {
 235                                 get { return current.Key; }
 236                         }
 237
 238                         public object Value
 239                         {
 240                                 get { return current.Value; }
 241                         }
 242
 243                         public DictionaryEntry Entry
 244                         {
 245                                 get { return new DictionaryEntry(Key, Value); }
 246                         }
 247
 248                         public bool MoveNext()
 249                         {
 250                                 bool moved = enumerator.MoveNext();
 251
 252                                 if (moved)
 253                                 {
 254                                         current = (KeyValuePair<string, object>)enumerator.Current;
 255                                 }
 256
 257                                 return moved;
 258                         }
 259
 260                         public void Reset()
 261                         {
 262                                 enumerator.Reset();
 263                         }
 264
 265                         public object Current
 266                         {
 267                                 get { return new DictionaryEntry(Key, Value); }
 268                         }
 269                 }
 270         }
 271 }