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| <div class="title">WeakDictionary.cs</div> </div> |
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| <a href="_weak_dictionary_8cs.html">Go to the documentation of this file.</a><div class="fragment"><div class="line"><a name="l00001"></a><span class="lineno"> 1</span> <span class="comment">/*</span></div> |
| <div class="line"><a name="l00002"></a><span class="lineno"> 2</span> <span class="comment"> *</span></div> |
| <div class="line"><a name="l00003"></a><span class="lineno"> 3</span> <span class="comment"> * Licensed to the Apache Software Foundation (ASF) under one</span></div> |
| <div class="line"><a name="l00004"></a><span class="lineno"> 4</span> <span class="comment"> * or more contributor license agreements. See the NOTICE file</span></div> |
| <div class="line"><a name="l00005"></a><span class="lineno"> 5</span> <span class="comment"> * distributed with this work for additional information</span></div> |
| <div class="line"><a name="l00006"></a><span class="lineno"> 6</span> <span class="comment"> * regarding copyright ownership. The ASF licenses this file</span></div> |
| <div class="line"><a name="l00007"></a><span class="lineno"> 7</span> <span class="comment"> * to you under the Apache License, Version 2.0 (the</span></div> |
| <div class="line"><a name="l00008"></a><span class="lineno"> 8</span> <span class="comment"> * "License"); you may not use this file except in compliance</span></div> |
| <div class="line"><a name="l00009"></a><span class="lineno"> 9</span> <span class="comment"> * with the License. You may obtain a copy of the License at</span></div> |
| <div class="line"><a name="l00010"></a><span class="lineno"> 10</span> <span class="comment"> *</span></div> |
| <div class="line"><a name="l00011"></a><span class="lineno"> 11</span> <span class="comment"> * http://www.apache.org/licenses/LICENSE-2.0</span></div> |
| <div class="line"><a name="l00012"></a><span class="lineno"> 12</span> <span class="comment"> *</span></div> |
| <div class="line"><a name="l00013"></a><span class="lineno"> 13</span> <span class="comment"> * Unless required by applicable law or agreed to in writing,</span></div> |
| <div class="line"><a name="l00014"></a><span class="lineno"> 14</span> <span class="comment"> * software distributed under the License is distributed on an</span></div> |
| <div class="line"><a name="l00015"></a><span class="lineno"> 15</span> <span class="comment"> * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY</span></div> |
| <div class="line"><a name="l00016"></a><span class="lineno"> 16</span> <span class="comment"> * KIND, either express or implied. See the License for the</span></div> |
| <div class="line"><a name="l00017"></a><span class="lineno"> 17</span> <span class="comment"> * specific language governing permissions and limitations</span></div> |
| <div class="line"><a name="l00018"></a><span class="lineno"> 18</span> <span class="comment"> * under the License.</span></div> |
| <div class="line"><a name="l00019"></a><span class="lineno"> 19</span> <span class="comment"> *</span></div> |
| <div class="line"><a name="l00020"></a><span class="lineno"> 20</span> <span class="comment">*/</span></div> |
| <div class="line"><a name="l00021"></a><span class="lineno"> 21</span> </div> |
| <div class="line"><a name="l00022"></a><span class="lineno"> 22</span> <span class="keyword">using</span> System;</div> |
| <div class="line"><a name="l00023"></a><span class="lineno"> 23</span> <span class="keyword">using</span> System.Collections;</div> |
| <div class="line"><a name="l00024"></a><span class="lineno"> 24</span> <span class="keyword">using</span> System.Collections.Generic;</div> |
| <div class="line"><a name="l00025"></a><span class="lineno"> 25</span> <span class="keyword">using</span> System.Linq;</div> |
| <div class="line"><a name="l00026"></a><span class="lineno"> 26</span> </div> |
| <div class="line"><a name="l00027"></a><span class="lineno"> 27</span> <span class="keyword">namespace </span>Lucene.Net.Support</div> |
| <div class="line"><a name="l00028"></a><span class="lineno"> 28</span> {</div> |
| <div class="line"><a name="l00029"></a><span class="lineno"><a class="code" href="class_lucene_1_1_net_1_1_support_1_1_weak_dictionary_3_01_t_key_00_01_t_value_01_4.html"> 29</a></span>  <span class="keyword">public</span> sealed <span class="keyword">class </span>WeakDictionary<TKey, TValue> : IDictionary<TKey, TValue></div> |
| <div class="line"><a name="l00030"></a><span class="lineno"> 30</span>  {</div> |
| <div class="line"><a name="l00031"></a><span class="lineno"> 31</span>  <span class="keyword">private</span> HashMap<WeakKey<TKey>, TValue> _hm;</div> |
| <div class="line"><a name="l00032"></a><span class="lineno"> 32</span>  <span class="keyword">private</span> <span class="keywordtype">int</span> _gcCollections = 0;</div> |
| <div class="line"><a name="l00033"></a><span class="lineno"> 33</span> </div> |
| <div class="line"><a name="l00034"></a><span class="lineno"><a class="code" href="class_lucene_1_1_net_1_1_support_1_1_weak_dictionary_3_01_t_key_00_01_t_value_01_4.html#ab914e530b18a2ddb08cceca4160053a2"> 34</a></span>  <span class="keyword">public</span> WeakDictionary(<span class="keywordtype">int</span> initialCapacity) : this(initialCapacity, Enumerable.Empty<KeyValuePair<TKey, TValue>>())</div> |
| <div class="line"><a name="l00035"></a><span class="lineno"> 35</span>  { }</div> |
| <div class="line"><a name="l00036"></a><span class="lineno"> 36</span> </div> |
| <div class="line"><a name="l00037"></a><span class="lineno"><a class="code" href="class_lucene_1_1_net_1_1_support_1_1_weak_dictionary_3_01_t_key_00_01_t_value_01_4.html#af76db18bfeba844ffa0bb946151eed6d"> 37</a></span>  <span class="keyword">public</span> WeakDictionary() : this(32, Enumerable.Empty<KeyValuePair<TKey, TValue>>())</div> |
| <div class="line"><a name="l00038"></a><span class="lineno"> 38</span>  { }</div> |
| <div class="line"><a name="l00039"></a><span class="lineno"> 39</span> </div> |
| <div class="line"><a name="l00040"></a><span class="lineno"><a class="code" href="class_lucene_1_1_net_1_1_support_1_1_weak_dictionary_3_01_t_key_00_01_t_value_01_4.html#a3f42e7ff5cc0b0d502d9951e4f193c64"> 40</a></span>  <span class="keyword">public</span> WeakDictionary(IEnumerable<KeyValuePair<TKey, TValue>> otherDictionary) : this(32, otherDictionary)</div> |
| <div class="line"><a name="l00041"></a><span class="lineno"> 41</span>  { }</div> |
| <div class="line"><a name="l00042"></a><span class="lineno"> 42</span> </div> |
| <div class="line"><a name="l00043"></a><span class="lineno"> 43</span>  <span class="keyword">private</span> WeakDictionary(<span class="keywordtype">int</span> initialCapacity, IEnumerable<KeyValuePair<TKey, TValue>> otherDict)</div> |
| <div class="line"><a name="l00044"></a><span class="lineno"> 44</span>  {</div> |
| <div class="line"><a name="l00045"></a><span class="lineno"> 45</span>  _hm = <span class="keyword">new</span> HashMap<WeakKey<TKey>, TValue>(initialCapacity);</div> |
| <div class="line"><a name="l00046"></a><span class="lineno"> 46</span>  <span class="keywordflow">foreach</span> (var kvp <span class="keywordflow">in</span> otherDict)</div> |
| <div class="line"><a name="l00047"></a><span class="lineno"> 47</span>  {</div> |
| <div class="line"><a name="l00048"></a><span class="lineno"> 48</span>  _hm.Add(<span class="keyword">new</span> WeakKey<TKey>(kvp.Key), kvp.Value);</div> |
| <div class="line"><a name="l00049"></a><span class="lineno"> 49</span>  }</div> |
| <div class="line"><a name="l00050"></a><span class="lineno"> 50</span>  }</div> |
| <div class="line"><a name="l00051"></a><span class="lineno"> 51</span> </div> |
| <div class="line"><a name="l00052"></a><span class="lineno"> 52</span>  <span class="keyword">private</span> <span class="keywordtype">void</span> Clean()</div> |
| <div class="line"><a name="l00053"></a><span class="lineno"> 53</span>  {</div> |
| <div class="line"><a name="l00054"></a><span class="lineno"> 54</span>  <span class="keywordflow">if</span> (_hm.Count == 0) <span class="keywordflow">return</span>;</div> |
| <div class="line"><a name="l00055"></a><span class="lineno"> 55</span>  var newHm = <span class="keyword">new</span> HashMap<WeakKey<TKey>, TValue>();</div> |
| <div class="line"><a name="l00056"></a><span class="lineno"> 56</span>  <span class="keywordflow">foreach</span> (var entry <span class="keywordflow">in</span> _hm.Where(x => x.Key != null && x.Key.IsAlive))</div> |
| <div class="line"><a name="l00057"></a><span class="lineno"> 57</span>  {</div> |
| <div class="line"><a name="l00058"></a><span class="lineno"> 58</span>  newHm.Add(entry.Key, entry.Value);</div> |
| <div class="line"><a name="l00059"></a><span class="lineno"> 59</span>  }</div> |
| <div class="line"><a name="l00060"></a><span class="lineno"> 60</span>  _hm = newHm;</div> |
| <div class="line"><a name="l00061"></a><span class="lineno"> 61</span>  }</div> |
| <div class="line"><a name="l00062"></a><span class="lineno"> 62</span> </div> |
| <div class="line"><a name="l00063"></a><span class="lineno"> 63</span>  <span class="keyword">private</span> <span class="keywordtype">void</span> CleanIfNeeded()</div> |
| <div class="line"><a name="l00064"></a><span class="lineno"> 64</span>  {</div> |
| <div class="line"><a name="l00065"></a><span class="lineno"> 65</span>  <span class="keywordtype">int</span> currentColCount = GC.CollectionCount(0);</div> |
| <div class="line"><a name="l00066"></a><span class="lineno"> 66</span>  <span class="keywordflow">if</span> (currentColCount > _gcCollections)</div> |
| <div class="line"><a name="l00067"></a><span class="lineno"> 67</span>  {</div> |
| <div class="line"><a name="l00068"></a><span class="lineno"> 68</span>  Clean();</div> |
| <div class="line"><a name="l00069"></a><span class="lineno"> 69</span>  _gcCollections = currentColCount;</div> |
| <div class="line"><a name="l00070"></a><span class="lineno"> 70</span>  }</div> |
| <div class="line"><a name="l00071"></a><span class="lineno"> 71</span>  }</div> |
| <div class="line"><a name="l00072"></a><span class="lineno"> 72</span> </div> |
| <div class="line"><a name="l00073"></a><span class="lineno"><a class="code" href="class_lucene_1_1_net_1_1_support_1_1_weak_dictionary_3_01_t_key_00_01_t_value_01_4.html#a9c29f339a3aa9da64ee6e83b4a7997d6"> 73</a></span>  <span class="keyword">public</span> IEnumerator<KeyValuePair<TKey, TValue>> GetEnumerator()</div> |
| <div class="line"><a name="l00074"></a><span class="lineno"> 74</span>  {</div> |
| <div class="line"><a name="l00075"></a><span class="lineno"> 75</span>  <span class="keywordflow">foreach</span> (var kvp <span class="keywordflow">in</span> _hm.Where(x => x.Key.IsAlive))</div> |
| <div class="line"><a name="l00076"></a><span class="lineno"> 76</span>  {</div> |
| <div class="line"><a name="l00077"></a><span class="lineno"> 77</span>  yield <span class="keywordflow">return</span> <span class="keyword">new</span> KeyValuePair<TKey, TValue>(kvp.Key.Target, kvp.Value);</div> |
| <div class="line"><a name="l00078"></a><span class="lineno"> 78</span>  }</div> |
| <div class="line"><a name="l00079"></a><span class="lineno"> 79</span>  }</div> |
| <div class="line"><a name="l00080"></a><span class="lineno"> 80</span> </div> |
| <div class="line"><a name="l00081"></a><span class="lineno"> 81</span>  IEnumerator IEnumerable.GetEnumerator()</div> |
| <div class="line"><a name="l00082"></a><span class="lineno"> 82</span>  {</div> |
| <div class="line"><a name="l00083"></a><span class="lineno"> 83</span>  <span class="keywordflow">return</span> GetEnumerator();</div> |
| <div class="line"><a name="l00084"></a><span class="lineno"> 84</span>  }</div> |
| <div class="line"><a name="l00085"></a><span class="lineno"> 85</span> </div> |
| <div class="line"><a name="l00086"></a><span class="lineno"> 86</span>  <span class="keywordtype">void</span> ICollection<KeyValuePair<TKey, TValue>>.Add(KeyValuePair<TKey, TValue> item)</div> |
| <div class="line"><a name="l00087"></a><span class="lineno"> 87</span>  {</div> |
| <div class="line"><a name="l00088"></a><span class="lineno"> 88</span>  CleanIfNeeded();</div> |
| <div class="line"><a name="l00089"></a><span class="lineno"> 89</span>  ((ICollection<KeyValuePair<WeakKey<TKey>, TValue>>) _hm).Add(</div> |
| <div class="line"><a name="l00090"></a><span class="lineno"> 90</span>  <span class="keyword">new</span> KeyValuePair<WeakKey<TKey>, TValue>(<span class="keyword">new</span> WeakKey<TKey>(item.Key), item.Value));</div> |
| <div class="line"><a name="l00091"></a><span class="lineno"> 91</span>  }</div> |
| <div class="line"><a name="l00092"></a><span class="lineno"> 92</span> </div> |
| <div class="line"><a name="l00093"></a><span class="lineno"><a class="code" href="class_lucene_1_1_net_1_1_support_1_1_weak_dictionary_3_01_t_key_00_01_t_value_01_4.html#ab71578682052b18af20b8886fcf38471"> 93</a></span>  <span class="keyword">public</span> <span class="keywordtype">void</span> Clear()</div> |
| <div class="line"><a name="l00094"></a><span class="lineno"> 94</span>  {</div> |
| <div class="line"><a name="l00095"></a><span class="lineno"> 95</span>  _hm.Clear();</div> |
| <div class="line"><a name="l00096"></a><span class="lineno"> 96</span>  }</div> |
| <div class="line"><a name="l00097"></a><span class="lineno"> 97</span> </div> |
| <div class="line"><a name="l00098"></a><span class="lineno"> 98</span>  <span class="keywordtype">bool</span> ICollection<KeyValuePair<TKey, TValue>>.Contains(KeyValuePair<TKey, TValue> item)</div> |
| <div class="line"><a name="l00099"></a><span class="lineno"> 99</span>  {</div> |
| <div class="line"><a name="l00100"></a><span class="lineno"> 100</span>  <span class="keywordflow">return</span> ((ICollection<KeyValuePair<WeakKey<TKey>, TValue>>)_hm).Contains(</div> |
| <div class="line"><a name="l00101"></a><span class="lineno"> 101</span>  <span class="keyword">new</span> KeyValuePair<WeakKey<TKey>, TValue>(<span class="keyword">new</span> WeakKey<TKey>(item.Key), item.Value));</div> |
| <div class="line"><a name="l00102"></a><span class="lineno"> 102</span>  }</div> |
| <div class="line"><a name="l00103"></a><span class="lineno"> 103</span> </div> |
| <div class="line"><a name="l00104"></a><span class="lineno"> 104</span>  <span class="keywordtype">bool</span> ICollection<KeyValuePair<TKey, TValue>>.Remove(KeyValuePair<TKey, TValue> item)</div> |
| <div class="line"><a name="l00105"></a><span class="lineno"> 105</span>  {</div> |
| <div class="line"><a name="l00106"></a><span class="lineno"> 106</span>  <span class="keywordflow">return</span> ((ICollection<KeyValuePair<WeakKey<TKey>, TValue>>)_hm).Remove(</div> |
| <div class="line"><a name="l00107"></a><span class="lineno"> 107</span>  <span class="keyword">new</span> KeyValuePair<WeakKey<TKey>, TValue>(<span class="keyword">new</span> WeakKey<TKey>(item.Key), item.Value));</div> |
| <div class="line"><a name="l00108"></a><span class="lineno"> 108</span>  }</div> |
| <div class="line"><a name="l00109"></a><span class="lineno"> 109</span> </div> |
| <div class="line"><a name="l00110"></a><span class="lineno"> 110</span>  <span class="keyword">public</span> <span class="keywordtype">int</span> Count</div> |
| <div class="line"><a name="l00111"></a><span class="lineno"><a class="code" href="class_lucene_1_1_net_1_1_support_1_1_weak_dictionary_3_01_t_key_00_01_t_value_01_4.html#ab3ed7b8584911f96a58f6a11c6f192d7"> 111</a></span>  {</div> |
| <div class="line"><a name="l00112"></a><span class="lineno"> 112</span>  <span class="keyword">get</span></div> |
| <div class="line"><a name="l00113"></a><span class="lineno"> 113</span>  {</div> |
| <div class="line"><a name="l00114"></a><span class="lineno"> 114</span>  CleanIfNeeded();</div> |
| <div class="line"><a name="l00115"></a><span class="lineno"> 115</span>  <span class="keywordflow">return</span> _hm.Count;</div> |
| <div class="line"><a name="l00116"></a><span class="lineno"> 116</span>  }</div> |
| <div class="line"><a name="l00117"></a><span class="lineno"> 117</span>  }</div> |
| <div class="line"><a name="l00118"></a><span class="lineno"> 118</span> </div> |
| <div class="line"><a name="l00119"></a><span class="lineno"> 119</span>  <span class="keyword">public</span> <span class="keywordtype">bool</span> IsReadOnly</div> |
| <div class="line"><a name="l00120"></a><span class="lineno"><a class="code" href="class_lucene_1_1_net_1_1_support_1_1_weak_dictionary_3_01_t_key_00_01_t_value_01_4.html#a7605749ae52bf4dc4cdcf9a3d930e91e"> 120</a></span>  {</div> |
| <div class="line"><a name="l00121"></a><span class="lineno"> 121</span>  <span class="keyword">get</span> { <span class="keywordflow">return</span> <span class="keyword">false</span>; }</div> |
| <div class="line"><a name="l00122"></a><span class="lineno"> 122</span>  }</div> |
| <div class="line"><a name="l00123"></a><span class="lineno"> 123</span> </div> |
| <div class="line"><a name="l00124"></a><span class="lineno"><a class="code" href="class_lucene_1_1_net_1_1_support_1_1_weak_dictionary_3_01_t_key_00_01_t_value_01_4.html#a9cf05e50dacd8c6353fa128e68cc6a66"> 124</a></span>  <span class="keyword">public</span> <span class="keywordtype">bool</span> ContainsKey(TKey key)</div> |
| <div class="line"><a name="l00125"></a><span class="lineno"> 125</span>  {</div> |
| <div class="line"><a name="l00126"></a><span class="lineno"> 126</span>  <span class="keywordflow">return</span> _hm.ContainsKey(<span class="keyword">new</span> WeakKey<TKey>(key));</div> |
| <div class="line"><a name="l00127"></a><span class="lineno"> 127</span>  }</div> |
| <div class="line"><a name="l00128"></a><span class="lineno"> 128</span> </div> |
| <div class="line"><a name="l00129"></a><span class="lineno"><a class="code" href="class_lucene_1_1_net_1_1_support_1_1_weak_dictionary_3_01_t_key_00_01_t_value_01_4.html#a5d85c2f776c15f19ef02c357b7ac1dda"> 129</a></span>  <span class="keyword">public</span> <span class="keywordtype">void</span> Add(TKey key, TValue value)</div> |
| <div class="line"><a name="l00130"></a><span class="lineno"> 130</span>  {</div> |
| <div class="line"><a name="l00131"></a><span class="lineno"> 131</span>  CleanIfNeeded();</div> |
| <div class="line"><a name="l00132"></a><span class="lineno"> 132</span>  _hm.Add(<span class="keyword">new</span> WeakKey<TKey>(key), value);</div> |
| <div class="line"><a name="l00133"></a><span class="lineno"> 133</span>  }</div> |
| <div class="line"><a name="l00134"></a><span class="lineno"> 134</span> </div> |
| <div class="line"><a name="l00135"></a><span class="lineno"><a class="code" href="class_lucene_1_1_net_1_1_support_1_1_weak_dictionary_3_01_t_key_00_01_t_value_01_4.html#ac54bf96476ee7baf0007425e87c552b8"> 135</a></span>  <span class="keyword">public</span> <span class="keywordtype">bool</span> Remove(TKey key)</div> |
| <div class="line"><a name="l00136"></a><span class="lineno"> 136</span>  {</div> |
| <div class="line"><a name="l00137"></a><span class="lineno"> 137</span>  <span class="keywordflow">return</span> _hm.Remove(<span class="keyword">new</span> WeakKey<TKey>(key));</div> |
| <div class="line"><a name="l00138"></a><span class="lineno"> 138</span>  }</div> |
| <div class="line"><a name="l00139"></a><span class="lineno"> 139</span> </div> |
| <div class="line"><a name="l00140"></a><span class="lineno"><a class="code" href="class_lucene_1_1_net_1_1_support_1_1_weak_dictionary_3_01_t_key_00_01_t_value_01_4.html#a4093b8837411f622af18bacfe58522ad"> 140</a></span>  <span class="keyword">public</span> <span class="keywordtype">bool</span> TryGetValue(TKey key, out TValue value)</div> |
| <div class="line"><a name="l00141"></a><span class="lineno"> 141</span>  {</div> |
| <div class="line"><a name="l00142"></a><span class="lineno"> 142</span>  <span class="keywordflow">return</span> _hm.TryGetValue(<span class="keyword">new</span> WeakKey<TKey>(key), out value);</div> |
| <div class="line"><a name="l00143"></a><span class="lineno"> 143</span>  }</div> |
| <div class="line"><a name="l00144"></a><span class="lineno"> 144</span> </div> |
| <div class="line"><a name="l00145"></a><span class="lineno"> 145</span>  <span class="keyword">public</span> TValue <span class="keyword">this</span>[TKey key]</div> |
| <div class="line"><a name="l00146"></a><span class="lineno"><a class="code" href="class_lucene_1_1_net_1_1_support_1_1_weak_dictionary_3_01_t_key_00_01_t_value_01_4.html#a79af33d42a47188b0394ffcee262b2fa"> 146</a></span>  {</div> |
| <div class="line"><a name="l00147"></a><span class="lineno"> 147</span>  <span class="keyword">get</span> { <span class="keywordflow">return</span> _hm[<span class="keyword">new</span> WeakKey<TKey>(key)]; }</div> |
| <div class="line"><a name="l00148"></a><span class="lineno"> 148</span>  <span class="keyword">set</span></div> |
| <div class="line"><a name="l00149"></a><span class="lineno"> 149</span>  {</div> |
| <div class="line"><a name="l00150"></a><span class="lineno"> 150</span>  CleanIfNeeded();</div> |
| <div class="line"><a name="l00151"></a><span class="lineno"> 151</span>  _hm[<span class="keyword">new</span> WeakKey<TKey>(key)] = value;</div> |
| <div class="line"><a name="l00152"></a><span class="lineno"> 152</span>  }</div> |
| <div class="line"><a name="l00153"></a><span class="lineno"> 153</span>  }</div> |
| <div class="line"><a name="l00154"></a><span class="lineno"> 154</span> </div> |
| <div class="line"><a name="l00155"></a><span class="lineno"> 155</span>  <span class="keyword">public</span> ICollection<TKey> Keys</div> |
| <div class="line"><a name="l00156"></a><span class="lineno"><a class="code" href="class_lucene_1_1_net_1_1_support_1_1_weak_dictionary_3_01_t_key_00_01_t_value_01_4.html#ac6806f89e811bc72388b9230c63af491"> 156</a></span>  {</div> |
| <div class="line"><a name="l00157"></a><span class="lineno"> 157</span>  <span class="keyword">get</span></div> |
| <div class="line"><a name="l00158"></a><span class="lineno"> 158</span>  {</div> |
| <div class="line"><a name="l00159"></a><span class="lineno"> 159</span>  CleanIfNeeded();</div> |
| <div class="line"><a name="l00160"></a><span class="lineno"> 160</span>  <span class="keywordflow">return</span> <span class="keyword">new</span> KeyCollection(_hm);</div> |
| <div class="line"><a name="l00161"></a><span class="lineno"> 161</span>  }</div> |
| <div class="line"><a name="l00162"></a><span class="lineno"> 162</span>  }</div> |
| <div class="line"><a name="l00163"></a><span class="lineno"> 163</span> </div> |
| <div class="line"><a name="l00164"></a><span class="lineno"> 164</span>  <span class="keyword">public</span> ICollection<TValue> Values</div> |
| <div class="line"><a name="l00165"></a><span class="lineno"><a class="code" href="class_lucene_1_1_net_1_1_support_1_1_weak_dictionary_3_01_t_key_00_01_t_value_01_4.html#a94abe243355575775107eb554f401e5f"> 165</a></span>  {</div> |
| <div class="line"><a name="l00166"></a><span class="lineno"> 166</span>  <span class="keyword">get</span></div> |
| <div class="line"><a name="l00167"></a><span class="lineno"> 167</span>  {</div> |
| <div class="line"><a name="l00168"></a><span class="lineno"> 168</span>  CleanIfNeeded();</div> |
| <div class="line"><a name="l00169"></a><span class="lineno"> 169</span>  <span class="keywordflow">return</span> _hm.Values;</div> |
| <div class="line"><a name="l00170"></a><span class="lineno"> 170</span>  }</div> |
| <div class="line"><a name="l00171"></a><span class="lineno"> 171</span>  }</div> |
| <div class="line"><a name="l00172"></a><span class="lineno"> 172</span> </div> |
| <div class="line"><a name="l00173"></a><span class="lineno"> 173</span>  <span class="keywordtype">void</span> ICollection<KeyValuePair<TKey, TValue>>.CopyTo(KeyValuePair<TKey, TValue>[] array, <span class="keywordtype">int</span> arrayIndex)</div> |
| <div class="line"><a name="l00174"></a><span class="lineno"> 174</span>  {</div> |
| <div class="line"><a name="l00175"></a><span class="lineno"> 175</span>  <span class="keywordflow">throw</span> <span class="keyword">new</span> NotSupportedException();</div> |
| <div class="line"><a name="l00176"></a><span class="lineno"> 176</span>  }</div> |
| <div class="line"><a name="l00177"></a><span class="lineno"> 177</span> </div> |
| <div class="line"><a name="l00178"></a><span class="lineno"> 178</span> <span class="preprocessor"> #region KeyCollection</span></div> |
| <div class="line"><a name="l00179"></a><span class="lineno"> 179</span> <span class="preprocessor"></span> <span class="keyword">class </span>KeyCollection : ICollection<TKey></div> |
| <div class="line"><a name="l00180"></a><span class="lineno"> 180</span>  {</div> |
| <div class="line"><a name="l00181"></a><span class="lineno"> 181</span>  <span class="keyword">private</span> readonly HashMap<WeakKey<TKey>, TValue> _internalDict;</div> |
| <div class="line"><a name="l00182"></a><span class="lineno"> 182</span> </div> |
| <div class="line"><a name="l00183"></a><span class="lineno"> 183</span>  <span class="keyword">public</span> KeyCollection(HashMap<WeakKey<TKey>, TValue> dict)</div> |
| <div class="line"><a name="l00184"></a><span class="lineno"> 184</span>  {</div> |
| <div class="line"><a name="l00185"></a><span class="lineno"> 185</span>  _internalDict = dict;</div> |
| <div class="line"><a name="l00186"></a><span class="lineno"> 186</span>  }</div> |
| <div class="line"><a name="l00187"></a><span class="lineno"> 187</span> </div> |
| <div class="line"><a name="l00188"></a><span class="lineno"> 188</span>  <span class="keyword">public</span> IEnumerator<TKey> GetEnumerator()</div> |
| <div class="line"><a name="l00189"></a><span class="lineno"> 189</span>  {</div> |
| <div class="line"><a name="l00190"></a><span class="lineno"> 190</span>  <span class="keywordflow">foreach</span> (var key <span class="keywordflow">in</span> _internalDict.Keys)</div> |
| <div class="line"><a name="l00191"></a><span class="lineno"> 191</span>  {</div> |
| <div class="line"><a name="l00192"></a><span class="lineno"> 192</span>  yield <span class="keywordflow">return</span> key.Target;</div> |
| <div class="line"><a name="l00193"></a><span class="lineno"> 193</span>  }</div> |
| <div class="line"><a name="l00194"></a><span class="lineno"> 194</span>  }</div> |
| <div class="line"><a name="l00195"></a><span class="lineno"> 195</span> </div> |
| <div class="line"><a name="l00196"></a><span class="lineno"> 196</span>  IEnumerator IEnumerable.GetEnumerator()</div> |
| <div class="line"><a name="l00197"></a><span class="lineno"> 197</span>  {</div> |
| <div class="line"><a name="l00198"></a><span class="lineno"> 198</span>  <span class="keywordflow">return</span> GetEnumerator();</div> |
| <div class="line"><a name="l00199"></a><span class="lineno"> 199</span>  }</div> |
| <div class="line"><a name="l00200"></a><span class="lineno"> 200</span> </div> |
| <div class="line"><a name="l00201"></a><span class="lineno"> 201</span>  <span class="keyword">public</span> <span class="keywordtype">void</span> CopyTo(TKey[] array, <span class="keywordtype">int</span> arrayIndex)</div> |
| <div class="line"><a name="l00202"></a><span class="lineno"> 202</span>  {</div> |
| <div class="line"><a name="l00203"></a><span class="lineno"> 203</span>  <span class="keywordflow">throw</span> <span class="keyword">new</span> NotImplementedException(<span class="stringliteral">"Implement this as needed"</span>);</div> |
| <div class="line"><a name="l00204"></a><span class="lineno"> 204</span>  }</div> |
| <div class="line"><a name="l00205"></a><span class="lineno"> 205</span> </div> |
| <div class="line"><a name="l00206"></a><span class="lineno"> 206</span>  <span class="keyword">public</span> <span class="keywordtype">int</span> Count</div> |
| <div class="line"><a name="l00207"></a><span class="lineno"> 207</span>  {</div> |
| <div class="line"><a name="l00208"></a><span class="lineno"> 208</span>  <span class="keyword">get</span> { <span class="keywordflow">return</span> _internalDict.Count + 1; }</div> |
| <div class="line"><a name="l00209"></a><span class="lineno"> 209</span>  }</div> |
| <div class="line"><a name="l00210"></a><span class="lineno"> 210</span> </div> |
| <div class="line"><a name="l00211"></a><span class="lineno"> 211</span>  <span class="keyword">public</span> <span class="keywordtype">bool</span> IsReadOnly</div> |
| <div class="line"><a name="l00212"></a><span class="lineno"> 212</span>  {</div> |
| <div class="line"><a name="l00213"></a><span class="lineno"> 213</span>  <span class="keyword">get</span> { <span class="keywordflow">return</span> <span class="keyword">true</span>; }</div> |
| <div class="line"><a name="l00214"></a><span class="lineno"> 214</span>  }</div> |
| <div class="line"><a name="l00215"></a><span class="lineno"> 215</span> </div> |
| <div class="line"><a name="l00216"></a><span class="lineno"> 216</span> <span class="preprocessor"> #region Explicit Interface Definitions</span></div> |
| <div class="line"><a name="l00217"></a><span class="lineno"> 217</span> <span class="preprocessor"></span> <span class="keywordtype">bool</span> ICollection<TKey>.Contains(TKey item)</div> |
| <div class="line"><a name="l00218"></a><span class="lineno"> 218</span>  {</div> |
| <div class="line"><a name="l00219"></a><span class="lineno"> 219</span>  <span class="keywordflow">throw</span> <span class="keyword">new</span> NotSupportedException();</div> |
| <div class="line"><a name="l00220"></a><span class="lineno"> 220</span>  }</div> |
| <div class="line"><a name="l00221"></a><span class="lineno"> 221</span> </div> |
| <div class="line"><a name="l00222"></a><span class="lineno"> 222</span>  <span class="keywordtype">void</span> ICollection<TKey>.Add(TKey item)</div> |
| <div class="line"><a name="l00223"></a><span class="lineno"> 223</span>  {</div> |
| <div class="line"><a name="l00224"></a><span class="lineno"> 224</span>  <span class="keywordflow">throw</span> <span class="keyword">new</span> NotSupportedException();</div> |
| <div class="line"><a name="l00225"></a><span class="lineno"> 225</span>  }</div> |
| <div class="line"><a name="l00226"></a><span class="lineno"> 226</span> </div> |
| <div class="line"><a name="l00227"></a><span class="lineno"> 227</span>  <span class="keywordtype">void</span> ICollection<TKey>.Clear()</div> |
| <div class="line"><a name="l00228"></a><span class="lineno"> 228</span>  {</div> |
| <div class="line"><a name="l00229"></a><span class="lineno"> 229</span>  <span class="keywordflow">throw</span> <span class="keyword">new</span> NotSupportedException();</div> |
| <div class="line"><a name="l00230"></a><span class="lineno"> 230</span>  }</div> |
| <div class="line"><a name="l00231"></a><span class="lineno"> 231</span> </div> |
| <div class="line"><a name="l00232"></a><span class="lineno"> 232</span>  <span class="keywordtype">bool</span> ICollection<TKey>.Remove(TKey item)</div> |
| <div class="line"><a name="l00233"></a><span class="lineno"> 233</span>  {</div> |
| <div class="line"><a name="l00234"></a><span class="lineno"> 234</span>  <span class="keywordflow">throw</span> <span class="keyword">new</span> NotSupportedException();</div> |
| <div class="line"><a name="l00235"></a><span class="lineno"> 235</span>  }</div> |
| <div class="line"><a name="l00236"></a><span class="lineno"> 236</span> <span class="preprocessor"> #endregion</span></div> |
| <div class="line"><a name="l00237"></a><span class="lineno"> 237</span> <span class="preprocessor"></span> }</div> |
| <div class="line"><a name="l00238"></a><span class="lineno"> 238</span> <span class="preprocessor"> #endregion</span></div> |
| <div class="line"><a name="l00239"></a><span class="lineno"> 239</span> <span class="preprocessor"></span></div> |
| <div class="line"><a name="l00240"></a><span class="lineno"> 240</span> </div> |
| <div class="line"><a name="l00246"></a><span class="lineno"> 246</span>  <span class="keyword">class </span>WeakKey<T></div> |
| <div class="line"><a name="l00247"></a><span class="lineno"> 247</span>  {</div> |
| <div class="line"><a name="l00248"></a><span class="lineno"> 248</span>  WeakReference reference;</div> |
| <div class="line"><a name="l00249"></a><span class="lineno"> 249</span>  <span class="keywordtype">int</span> hashCode;</div> |
| <div class="line"><a name="l00250"></a><span class="lineno"> 250</span> </div> |
| <div class="line"><a name="l00251"></a><span class="lineno"> 251</span>  <span class="keyword">public</span> WeakKey(T key)</div> |
| <div class="line"><a name="l00252"></a><span class="lineno"> 252</span>  {</div> |
| <div class="line"><a name="l00253"></a><span class="lineno"> 253</span>  <span class="keywordflow">if</span> (key == null)</div> |
| <div class="line"><a name="l00254"></a><span class="lineno"> 254</span>  <span class="keywordflow">throw</span> <span class="keyword">new</span> ArgumentNullException(<span class="stringliteral">"key"</span>);</div> |
| <div class="line"><a name="l00255"></a><span class="lineno"> 255</span> </div> |
| <div class="line"><a name="l00256"></a><span class="lineno"> 256</span>  hashCode = key.GetHashCode();</div> |
| <div class="line"><a name="l00257"></a><span class="lineno"> 257</span>  reference = <span class="keyword">new</span> WeakReference(key);</div> |
| <div class="line"><a name="l00258"></a><span class="lineno"> 258</span>  }</div> |
| <div class="line"><a name="l00259"></a><span class="lineno"> 259</span> </div> |
| <div class="line"><a name="l00260"></a><span class="lineno"> 260</span>  <span class="keyword">public</span> <span class="keyword">override</span> <span class="keywordtype">int</span> GetHashCode()</div> |
| <div class="line"><a name="l00261"></a><span class="lineno"> 261</span>  {</div> |
| <div class="line"><a name="l00262"></a><span class="lineno"> 262</span>  <span class="keywordflow">return</span> hashCode;</div> |
| <div class="line"><a name="l00263"></a><span class="lineno"> 263</span>  }</div> |
| <div class="line"><a name="l00264"></a><span class="lineno"> 264</span> </div> |
| <div class="line"><a name="l00265"></a><span class="lineno"> 265</span>  <span class="keyword">public</span> <span class="keyword">override</span> <span class="keywordtype">bool</span> Equals(<span class="keywordtype">object</span> obj)</div> |
| <div class="line"><a name="l00266"></a><span class="lineno"> 266</span>  {</div> |
| <div class="line"><a name="l00267"></a><span class="lineno"> 267</span>  <span class="keywordflow">if</span> (!reference.IsAlive || obj == null) <span class="keywordflow">return</span> <span class="keyword">false</span>;</div> |
| <div class="line"><a name="l00268"></a><span class="lineno"> 268</span> </div> |
| <div class="line"><a name="l00269"></a><span class="lineno"> 269</span>  <span class="keywordflow">if</span> (<span class="keywordtype">object</span>.ReferenceEquals(<span class="keyword">this</span>, obj))</div> |
| <div class="line"><a name="l00270"></a><span class="lineno"> 270</span>  {</div> |
| <div class="line"><a name="l00271"></a><span class="lineno"> 271</span>  <span class="keywordflow">return</span> <span class="keyword">true</span>;</div> |
| <div class="line"><a name="l00272"></a><span class="lineno"> 272</span>  }</div> |
| <div class="line"><a name="l00273"></a><span class="lineno"> 273</span> </div> |
| <div class="line"><a name="l00274"></a><span class="lineno"> 274</span>  <span class="keywordflow">if</span> (obj is WeakKey<T>)</div> |
| <div class="line"><a name="l00275"></a><span class="lineno"> 275</span>  {</div> |
| <div class="line"><a name="l00276"></a><span class="lineno"> 276</span>  var other = (WeakKey<T>)obj;</div> |
| <div class="line"><a name="l00277"></a><span class="lineno"> 277</span> </div> |
| <div class="line"><a name="l00278"></a><span class="lineno"> 278</span>  var referenceTarget = reference.Target; <span class="comment">// Careful: can be null in the mean time...</span></div> |
| <div class="line"><a name="l00279"></a><span class="lineno"> 279</span>  <span class="keywordflow">return</span> referenceTarget != null && referenceTarget.Equals(other.Target);</div> |
| <div class="line"><a name="l00280"></a><span class="lineno"> 280</span>  }</div> |
| <div class="line"><a name="l00281"></a><span class="lineno"> 281</span> </div> |
| <div class="line"><a name="l00282"></a><span class="lineno"> 282</span>  <span class="keywordflow">return</span> <span class="keyword">false</span>;</div> |
| <div class="line"><a name="l00283"></a><span class="lineno"> 283</span>  }</div> |
| <div class="line"><a name="l00284"></a><span class="lineno"> 284</span> </div> |
| <div class="line"><a name="l00285"></a><span class="lineno"> 285</span>  <span class="keyword">public</span> T Target</div> |
| <div class="line"><a name="l00286"></a><span class="lineno"> 286</span>  {</div> |
| <div class="line"><a name="l00287"></a><span class="lineno"> 287</span>  <span class="keyword">get</span> { <span class="keywordflow">return</span> (T)reference.Target; }</div> |
| <div class="line"><a name="l00288"></a><span class="lineno"> 288</span>  }</div> |
| <div class="line"><a name="l00289"></a><span class="lineno"> 289</span> </div> |
| <div class="line"><a name="l00290"></a><span class="lineno"> 290</span>  <span class="keyword">public</span> <span class="keywordtype">bool</span> IsAlive</div> |
| <div class="line"><a name="l00291"></a><span class="lineno"> 291</span>  {</div> |
| <div class="line"><a name="l00292"></a><span class="lineno"> 292</span>  <span class="keyword">get</span> { <span class="keywordflow">return</span> reference.IsAlive; }</div> |
| <div class="line"><a name="l00293"></a><span class="lineno"> 293</span>  }</div> |
| <div class="line"><a name="l00294"></a><span class="lineno"> 294</span>  }</div> |
| <div class="line"><a name="l00295"></a><span class="lineno"> 295</span>  }</div> |
| <div class="line"><a name="l00296"></a><span class="lineno"> 296</span> }</div> |
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