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&#160;<span id="projectnumber">3.0.3</span>
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<div id="projectbrief">Lucene.Net is a .NET port of the Java Lucene Indexing Library</div>
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<li class="navelem"><a class="el" href="dir_1efe588324fc547683bba4a3f1bac847.html">core</a></li><li class="navelem"><a class="el" href="dir_508bd2a9867f606940156debe4946ca8.html">Index</a></li> </ul>
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<div class="title">TermInfosReader.cs</div> </div>
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<a href="_term_infos_reader_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>&#160;<span class="comment">/* </span></div>
<div class="line"><a name="l00002"></a><span class="lineno"> 2</span>&#160;<span class="comment"> * Licensed to the Apache Software Foundation (ASF) under one or more</span></div>
<div class="line"><a name="l00003"></a><span class="lineno"> 3</span>&#160;<span class="comment"> * contributor license agreements. See the NOTICE file distributed with</span></div>
<div class="line"><a name="l00004"></a><span class="lineno"> 4</span>&#160;<span class="comment"> * this work for additional information regarding copyright ownership.</span></div>
<div class="line"><a name="l00005"></a><span class="lineno"> 5</span>&#160;<span class="comment"> * The ASF licenses this file to You under the Apache License, Version 2.0</span></div>
<div class="line"><a name="l00006"></a><span class="lineno"> 6</span>&#160;<span class="comment"> * (the &quot;License&quot;); you may not use this file except in compliance with</span></div>
<div class="line"><a name="l00007"></a><span class="lineno"> 7</span>&#160;<span class="comment"> * the License. You may obtain a copy of the License at</span></div>
<div class="line"><a name="l00008"></a><span class="lineno"> 8</span>&#160;<span class="comment"> * </span></div>
<div class="line"><a name="l00009"></a><span class="lineno"> 9</span>&#160;<span class="comment"> * http://www.apache.org/licenses/LICENSE-2.0</span></div>
<div class="line"><a name="l00010"></a><span class="lineno"> 10</span>&#160;<span class="comment"> * </span></div>
<div class="line"><a name="l00011"></a><span class="lineno"> 11</span>&#160;<span class="comment"> * Unless required by applicable law or agreed to in writing, software</span></div>
<div class="line"><a name="l00012"></a><span class="lineno"> 12</span>&#160;<span class="comment"> * distributed under the License is distributed on an &quot;AS IS&quot; BASIS,</span></div>
<div class="line"><a name="l00013"></a><span class="lineno"> 13</span>&#160;<span class="comment"> * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.</span></div>
<div class="line"><a name="l00014"></a><span class="lineno"> 14</span>&#160;<span class="comment"> * See the License for the specific language governing permissions and</span></div>
<div class="line"><a name="l00015"></a><span class="lineno"> 15</span>&#160;<span class="comment"> * limitations under the License.</span></div>
<div class="line"><a name="l00016"></a><span class="lineno"> 16</span>&#160;<span class="comment"> */</span></div>
<div class="line"><a name="l00017"></a><span class="lineno"> 17</span>&#160;</div>
<div class="line"><a name="l00018"></a><span class="lineno"> 18</span>&#160;<span class="keyword">using</span> System;</div>
<div class="line"><a name="l00019"></a><span class="lineno"> 19</span>&#160;<span class="keyword">using</span> Lucene.Net.Support;</div>
<div class="line"><a name="l00020"></a><span class="lineno"> 20</span>&#160;<span class="keyword">using</span> Lucene.Net.Util;</div>
<div class="line"><a name="l00021"></a><span class="lineno"> 21</span>&#160;<span class="keyword">using</span> Lucene.Net.Util.Cache;</div>
<div class="line"><a name="l00022"></a><span class="lineno"><a class="code" href="_term_infos_reader_8cs.html#ac7fdd4fc5daf7ce3e6be563664f8bf64"> 22</a></span>&#160;<span class="keyword">using</span> <a class="code" href="_syns2_index_8cs.html#aada057080323f6e867d8f9c189276716">Directory</a> = Lucene.Net.Store.Directory;</div>
<div class="line"><a name="l00023"></a><span class="lineno"> 23</span>&#160;</div>
<div class="line"><a name="l00024"></a><span class="lineno"> 24</span>&#160;<span class="keyword">namespace </span>Lucene.Net.Index</div>
<div class="line"><a name="l00025"></a><span class="lineno"> 25</span>&#160;{</div>
<div class="line"><a name="l00026"></a><span class="lineno"> 26</span>&#160;</div>
<div class="line"><a name="l00031"></a><span class="lineno"> 31</span>&#160; </div>
<div class="line"><a name="l00032"></a><span class="lineno"><a class="code" href="class_lucene_1_1_net_1_1_index_1_1_term_infos_reader.html"> 32</a></span>&#160; sealed <span class="keyword">class </span><a class="code" href="class_lucene_1_1_net_1_1_index_1_1_term_infos_reader.html" title="This stores a monotonically increasing set of &lt;Term, TermInfo&gt; pairs in a Directory. Pairs are accessed either by Term or by ordinal position the set. ">TermInfosReader</a> : IDisposable</div>
<div class="line"><a name="l00033"></a><span class="lineno"> 33</span>&#160; {</div>
<div class="line"><a name="l00034"></a><span class="lineno"> 34</span>&#160; <span class="keyword">private</span> readonly <a class="code" href="_syns2_index_8cs.html#aada057080323f6e867d8f9c189276716">Directory</a> directory;</div>
<div class="line"><a name="l00035"></a><span class="lineno"> 35</span>&#160; <span class="keyword">private</span> readonly String segment;</div>
<div class="line"><a name="l00036"></a><span class="lineno"> 36</span>&#160; <span class="keyword">private</span> readonly <a class="code" href="class_lucene_1_1_net_1_1_index_1_1_field_infos.html" title="Access to the Fieldable Info file that describes document fields and whether or not they are indexed...">FieldInfos</a> fieldInfos;</div>
<div class="line"><a name="l00037"></a><span class="lineno"> 37</span>&#160;</div>
<div class="line"><a name="l00038"></a><span class="lineno"> 38</span>&#160; <span class="keyword">private</span> <span class="keywordtype">bool</span> isDisposed;</div>
<div class="line"><a name="l00039"></a><span class="lineno"> 39</span>&#160;</div>
<div class="line"><a name="l00040"></a><span class="lineno"> 40</span>&#160; <span class="keyword">private</span> readonly <a class="code" href="class_lucene_1_1_net_1_1_util_1_1_closeable_thread_local.html" title="Java&#39;s builtin ThreadLocal has a serious flaw: it can take an arbitrarily long amount of time to dere...">CloseableThreadLocal&lt;ThreadResources&gt;</a> threadResources = <span class="keyword">new</span> <a class="code" href="class_lucene_1_1_net_1_1_util_1_1_closeable_thread_local.html" title="Java&#39;s builtin ThreadLocal has a serious flaw: it can take an arbitrarily long amount of time to dere...">CloseableThreadLocal&lt;ThreadResources&gt;</a>();</div>
<div class="line"><a name="l00041"></a><span class="lineno"> 41</span>&#160; <span class="keyword">private</span> readonly SegmentTermEnum origEnum;</div>
<div class="line"><a name="l00042"></a><span class="lineno"> 42</span>&#160; <span class="keyword">private</span> readonly <span class="keywordtype">long</span> size;</div>
<div class="line"><a name="l00043"></a><span class="lineno"> 43</span>&#160; </div>
<div class="line"><a name="l00044"></a><span class="lineno"> 44</span>&#160; <span class="keyword">private</span> readonly <a class="code" href="class_lucene_1_1_net_1_1_index_1_1_term.html" title="A Term represents a word from text. This is the unit of search. It is composed of two elements...">Term</a>[] indexTerms;</div>
<div class="line"><a name="l00045"></a><span class="lineno"> 45</span>&#160; <span class="keyword">private</span> readonly <a class="code" href="class_lucene_1_1_net_1_1_index_1_1_term_info.html" title="A TermInfo is the record of information stored for a term.">TermInfo</a>[] indexInfos;</div>
<div class="line"><a name="l00046"></a><span class="lineno"> 46</span>&#160; <span class="keyword">private</span> readonly <span class="keywordtype">long</span>[] indexPointers;</div>
<div class="line"><a name="l00047"></a><span class="lineno"> 47</span>&#160; </div>
<div class="line"><a name="l00048"></a><span class="lineno"> 48</span>&#160; <span class="keyword">private</span> readonly <span class="keywordtype">int</span> totalIndexInterval;</div>
<div class="line"><a name="l00049"></a><span class="lineno"> 49</span>&#160; </div>
<div class="line"><a name="l00050"></a><span class="lineno"> 50</span>&#160; <span class="keyword">private</span> <span class="keyword">const</span> <span class="keywordtype">int</span> DEFAULT_CACHE_SIZE = 1024;</div>
<div class="line"><a name="l00051"></a><span class="lineno"> 51</span>&#160; </div>
<div class="line"><a name="l00053"></a><span class="lineno"> 53</span>&#160; <span class="keyword">private</span> sealed <span class="keyword">class </span>ThreadResources</div>
<div class="line"><a name="l00054"></a><span class="lineno"> 54</span>&#160; {</div>
<div class="line"><a name="l00055"></a><span class="lineno"> 55</span>&#160; <span class="keyword">internal</span> SegmentTermEnum termEnum;</div>
<div class="line"><a name="l00056"></a><span class="lineno"> 56</span>&#160; </div>
<div class="line"><a name="l00057"></a><span class="lineno"> 57</span>&#160; <span class="comment">// Used for caching the least recently looked-up Terms</span></div>
<div class="line"><a name="l00058"></a><span class="lineno"> 58</span>&#160; <span class="keyword">internal</span> Cache&lt;Term, TermInfo&gt; termInfoCache;</div>
<div class="line"><a name="l00059"></a><span class="lineno"> 59</span>&#160; }</div>
<div class="line"><a name="l00060"></a><span class="lineno"> 60</span>&#160; </div>
<div class="line"><a name="l00061"></a><span class="lineno"> 61</span>&#160; <span class="keyword">internal</span> <a class="code" href="class_lucene_1_1_net_1_1_index_1_1_term_infos_reader.html" title="This stores a monotonically increasing set of &lt;Term, TermInfo&gt; pairs in a Directory. Pairs are accessed either by Term or by ordinal position the set. ">TermInfosReader</a>(<a class="code" href="_syns2_index_8cs.html#aada057080323f6e867d8f9c189276716">Directory</a> dir, System.String seg, <a class="code" href="class_lucene_1_1_net_1_1_index_1_1_field_infos.html" title="Access to the Fieldable Info file that describes document fields and whether or not they are indexed...">FieldInfos</a> fis, <span class="keywordtype">int</span> readBufferSize, <span class="keywordtype">int</span> indexDivisor)</div>
<div class="line"><a name="l00062"></a><span class="lineno"> 62</span>&#160; {</div>
<div class="line"><a name="l00063"></a><span class="lineno"> 63</span>&#160; <span class="keywordtype">bool</span> success = <span class="keyword">false</span>;</div>
<div class="line"><a name="l00064"></a><span class="lineno"> 64</span>&#160; </div>
<div class="line"><a name="l00065"></a><span class="lineno"> 65</span>&#160; <span class="keywordflow">if</span> (indexDivisor &lt; 1 &amp;&amp; indexDivisor != - 1)</div>
<div class="line"><a name="l00066"></a><span class="lineno"> 66</span>&#160; {</div>
<div class="line"><a name="l00067"></a><span class="lineno"> 67</span>&#160; <span class="keywordflow">throw</span> <span class="keyword">new</span> System.ArgumentException(<span class="stringliteral">&quot;indexDivisor must be -1 (don&#39;t load terms index) or greater than 0: got &quot;</span> + indexDivisor);</div>
<div class="line"><a name="l00068"></a><span class="lineno"> 68</span>&#160; }</div>
<div class="line"><a name="l00069"></a><span class="lineno"> 69</span>&#160; </div>
<div class="line"><a name="l00070"></a><span class="lineno"> 70</span>&#160; <span class="keywordflow">try</span></div>
<div class="line"><a name="l00071"></a><span class="lineno"> 71</span>&#160; {</div>
<div class="line"><a name="l00072"></a><span class="lineno"> 72</span>&#160; directory = dir;</div>
<div class="line"><a name="l00073"></a><span class="lineno"> 73</span>&#160; segment = seg;</div>
<div class="line"><a name="l00074"></a><span class="lineno"> 74</span>&#160; fieldInfos = fis;</div>
<div class="line"><a name="l00075"></a><span class="lineno"> 75</span>&#160; </div>
<div class="line"><a name="l00076"></a><span class="lineno"> 76</span>&#160; origEnum = <span class="keyword">new</span> SegmentTermEnum(directory.OpenInput(segment + <span class="stringliteral">&quot;.&quot;</span> + <a class="code" href="class_lucene_1_1_net_1_1_index_1_1_index_file_names.html" title="Useful constants representing filenames and extensions used by lucene">IndexFileNames</a>.<a class="code" href="class_lucene_1_1_net_1_1_index_1_1_index_file_names.html#ab960df70c20c77a4f0f20e773de2aa80" title="Extension of terms file ">TERMS_EXTENSION</a>, readBufferSize), fieldInfos, <span class="keyword">false</span>);</div>
<div class="line"><a name="l00077"></a><span class="lineno"> 77</span>&#160; size = origEnum.size;</div>
<div class="line"><a name="l00078"></a><span class="lineno"> 78</span>&#160; </div>
<div class="line"><a name="l00079"></a><span class="lineno"> 79</span>&#160; </div>
<div class="line"><a name="l00080"></a><span class="lineno"> 80</span>&#160; <span class="keywordflow">if</span> (indexDivisor != - 1)</div>
<div class="line"><a name="l00081"></a><span class="lineno"> 81</span>&#160; {</div>
<div class="line"><a name="l00082"></a><span class="lineno"> 82</span>&#160; <span class="comment">// Load terms index</span></div>
<div class="line"><a name="l00083"></a><span class="lineno"> 83</span>&#160; totalIndexInterval = origEnum.indexInterval * indexDivisor;</div>
<div class="line"><a name="l00084"></a><span class="lineno"> 84</span>&#160; var indexEnum = <span class="keyword">new</span> SegmentTermEnum(directory.OpenInput(segment + <span class="stringliteral">&quot;.&quot;</span> + <a class="code" href="class_lucene_1_1_net_1_1_index_1_1_index_file_names.html" title="Useful constants representing filenames and extensions used by lucene">IndexFileNames</a>.<a class="code" href="class_lucene_1_1_net_1_1_index_1_1_index_file_names.html#a01fc6c5ec4fae228eb7c6b455213c6c9" title="Extension of terms index file ">TERMS_INDEX_EXTENSION</a>, readBufferSize), fieldInfos, <span class="keyword">true</span>);</div>
<div class="line"><a name="l00085"></a><span class="lineno"> 85</span>&#160; </div>
<div class="line"><a name="l00086"></a><span class="lineno"> 86</span>&#160; <span class="keywordflow">try</span></div>
<div class="line"><a name="l00087"></a><span class="lineno"> 87</span>&#160; {</div>
<div class="line"><a name="l00088"></a><span class="lineno"> 88</span>&#160; <span class="keywordtype">int</span> indexSize = 1 + ((int) indexEnum.size - 1) / indexDivisor; <span class="comment">// otherwise read index</span></div>
<div class="line"><a name="l00089"></a><span class="lineno"> 89</span>&#160; </div>
<div class="line"><a name="l00090"></a><span class="lineno"> 90</span>&#160; indexTerms = <span class="keyword">new</span> <a class="code" href="class_lucene_1_1_net_1_1_index_1_1_term.html" title="A Term represents a word from text. This is the unit of search. It is composed of two elements...">Term</a>[indexSize];</div>
<div class="line"><a name="l00091"></a><span class="lineno"> 91</span>&#160; indexInfos = <span class="keyword">new</span> <a class="code" href="class_lucene_1_1_net_1_1_index_1_1_term_info.html" title="A TermInfo is the record of information stored for a term.">TermInfo</a>[indexSize];</div>
<div class="line"><a name="l00092"></a><span class="lineno"> 92</span>&#160; indexPointers = <span class="keyword">new</span> <span class="keywordtype">long</span>[indexSize];</div>
<div class="line"><a name="l00093"></a><span class="lineno"> 93</span>&#160; </div>
<div class="line"><a name="l00094"></a><span class="lineno"> 94</span>&#160; <span class="keywordflow">for</span> (<span class="keywordtype">int</span> i = 0; indexEnum.Next(); i++)</div>
<div class="line"><a name="l00095"></a><span class="lineno"> 95</span>&#160; {</div>
<div class="line"><a name="l00096"></a><span class="lineno"> 96</span>&#160; indexTerms[i] = indexEnum.Term;</div>
<div class="line"><a name="l00097"></a><span class="lineno"> 97</span>&#160; indexInfos[i] = indexEnum.TermInfo();</div>
<div class="line"><a name="l00098"></a><span class="lineno"> 98</span>&#160; indexPointers[i] = indexEnum.indexPointer;</div>
<div class="line"><a name="l00099"></a><span class="lineno"> 99</span>&#160; </div>
<div class="line"><a name="l00100"></a><span class="lineno"> 100</span>&#160; <span class="keywordflow">for</span> (<span class="keywordtype">int</span> j = 1; j &lt; indexDivisor; j++)</div>
<div class="line"><a name="l00101"></a><span class="lineno"> 101</span>&#160; <span class="keywordflow">if</span> (!indexEnum.Next())</div>
<div class="line"><a name="l00102"></a><span class="lineno"> 102</span>&#160; <span class="keywordflow">break</span>;</div>
<div class="line"><a name="l00103"></a><span class="lineno"> 103</span>&#160; }</div>
<div class="line"><a name="l00104"></a><span class="lineno"> 104</span>&#160; }</div>
<div class="line"><a name="l00105"></a><span class="lineno"> 105</span>&#160; <span class="keywordflow">finally</span></div>
<div class="line"><a name="l00106"></a><span class="lineno"> 106</span>&#160; {</div>
<div class="line"><a name="l00107"></a><span class="lineno"> 107</span>&#160; indexEnum.Close();</div>
<div class="line"><a name="l00108"></a><span class="lineno"> 108</span>&#160; }</div>
<div class="line"><a name="l00109"></a><span class="lineno"> 109</span>&#160; }</div>
<div class="line"><a name="l00110"></a><span class="lineno"> 110</span>&#160; <span class="keywordflow">else</span></div>
<div class="line"><a name="l00111"></a><span class="lineno"> 111</span>&#160; {</div>
<div class="line"><a name="l00112"></a><span class="lineno"> 112</span>&#160; <span class="comment">// Do not load terms index:</span></div>
<div class="line"><a name="l00113"></a><span class="lineno"> 113</span>&#160; totalIndexInterval = - 1;</div>
<div class="line"><a name="l00114"></a><span class="lineno"> 114</span>&#160; indexTerms = null;</div>
<div class="line"><a name="l00115"></a><span class="lineno"> 115</span>&#160; indexInfos = null;</div>
<div class="line"><a name="l00116"></a><span class="lineno"> 116</span>&#160; indexPointers = null;</div>
<div class="line"><a name="l00117"></a><span class="lineno"> 117</span>&#160; }</div>
<div class="line"><a name="l00118"></a><span class="lineno"> 118</span>&#160; success = <span class="keyword">true</span>;</div>
<div class="line"><a name="l00119"></a><span class="lineno"> 119</span>&#160; }</div>
<div class="line"><a name="l00120"></a><span class="lineno"> 120</span>&#160; <span class="keywordflow">finally</span></div>
<div class="line"><a name="l00121"></a><span class="lineno"> 121</span>&#160; {</div>
<div class="line"><a name="l00122"></a><span class="lineno"> 122</span>&#160; <span class="comment">// With lock-less commits, it&#39;s entirely possible (and</span></div>
<div class="line"><a name="l00123"></a><span class="lineno"> 123</span>&#160; <span class="comment">// fine) to hit a FileNotFound exception above. In</span></div>
<div class="line"><a name="l00124"></a><span class="lineno"> 124</span>&#160; <span class="comment">// this case, we want to explicitly close any subset</span></div>
<div class="line"><a name="l00125"></a><span class="lineno"> 125</span>&#160; <span class="comment">// of things that were opened so that we don&#39;t have to</span></div>
<div class="line"><a name="l00126"></a><span class="lineno"> 126</span>&#160; <span class="comment">// wait for a GC to do so.</span></div>
<div class="line"><a name="l00127"></a><span class="lineno"> 127</span>&#160; <span class="keywordflow">if</span> (!success)</div>
<div class="line"><a name="l00128"></a><span class="lineno"> 128</span>&#160; {</div>
<div class="line"><a name="l00129"></a><span class="lineno"> 129</span>&#160; Dispose();</div>
<div class="line"><a name="l00130"></a><span class="lineno"> 130</span>&#160; }</div>
<div class="line"><a name="l00131"></a><span class="lineno"> 131</span>&#160; }</div>
<div class="line"><a name="l00132"></a><span class="lineno"> 132</span>&#160; }</div>
<div class="line"><a name="l00133"></a><span class="lineno"> 133</span>&#160;</div>
<div class="line"><a name="l00134"></a><span class="lineno"> 134</span>&#160; <span class="keyword">public</span> <span class="keywordtype">int</span> SkipInterval</div>
<div class="line"><a name="l00135"></a><span class="lineno"><a class="code" href="class_lucene_1_1_net_1_1_index_1_1_term_infos_reader.html#a3513ae6b07757dac735e3085e77094cb"> 135</a></span>&#160; {</div>
<div class="line"><a name="l00136"></a><span class="lineno"> 136</span>&#160; <span class="keyword">get</span> { <span class="keywordflow">return</span> origEnum.skipInterval; }</div>
<div class="line"><a name="l00137"></a><span class="lineno"> 137</span>&#160; }</div>
<div class="line"><a name="l00138"></a><span class="lineno"> 138</span>&#160;</div>
<div class="line"><a name="l00139"></a><span class="lineno"> 139</span>&#160; <span class="keyword">public</span> <span class="keywordtype">int</span> MaxSkipLevels</div>
<div class="line"><a name="l00140"></a><span class="lineno"><a class="code" href="class_lucene_1_1_net_1_1_index_1_1_term_infos_reader.html#a4144d6e3ca4ac96648134dec86c2e634"> 140</a></span>&#160; {</div>
<div class="line"><a name="l00141"></a><span class="lineno"> 141</span>&#160; <span class="keyword">get</span> { <span class="keywordflow">return</span> origEnum.maxSkipLevels; }</div>
<div class="line"><a name="l00142"></a><span class="lineno"> 142</span>&#160; }</div>
<div class="line"><a name="l00143"></a><span class="lineno"> 143</span>&#160;</div>
<div class="line"><a name="l00144"></a><span class="lineno"><a class="code" href="class_lucene_1_1_net_1_1_index_1_1_term_infos_reader.html#abadb7d6f81c07c50092293865ffa8167"> 144</a></span>&#160; <span class="keyword">public</span> <span class="keywordtype">void</span> Dispose()</div>
<div class="line"><a name="l00145"></a><span class="lineno"> 145</span>&#160; {</div>
<div class="line"><a name="l00146"></a><span class="lineno"> 146</span>&#160; <span class="keywordflow">if</span> (isDisposed) <span class="keywordflow">return</span>;</div>
<div class="line"><a name="l00147"></a><span class="lineno"> 147</span>&#160;</div>
<div class="line"><a name="l00148"></a><span class="lineno"> 148</span>&#160; <span class="comment">// Move to protected method if class becomes unsealed</span></div>
<div class="line"><a name="l00149"></a><span class="lineno"> 149</span>&#160; <span class="keywordflow">if</span> (origEnum != null)</div>
<div class="line"><a name="l00150"></a><span class="lineno"> 150</span>&#160; origEnum.Dispose();</div>
<div class="line"><a name="l00151"></a><span class="lineno"> 151</span>&#160; threadResources.Dispose();</div>
<div class="line"><a name="l00152"></a><span class="lineno"> 152</span>&#160;</div>
<div class="line"><a name="l00153"></a><span class="lineno"> 153</span>&#160; isDisposed = <span class="keyword">true</span>;</div>
<div class="line"><a name="l00154"></a><span class="lineno"> 154</span>&#160; }</div>
<div class="line"><a name="l00155"></a><span class="lineno"> 155</span>&#160; </div>
<div class="line"><a name="l00157"></a><span class="lineno"> 157</span>&#160; <span class="keyword">internal</span> <span class="keywordtype">long</span> Size()</div>
<div class="line"><a name="l00158"></a><span class="lineno"> 158</span>&#160; {</div>
<div class="line"><a name="l00159"></a><span class="lineno"> 159</span>&#160; <span class="keywordflow">return</span> size;</div>
<div class="line"><a name="l00160"></a><span class="lineno"> 160</span>&#160; }</div>
<div class="line"><a name="l00161"></a><span class="lineno"> 161</span>&#160; </div>
<div class="line"><a name="l00162"></a><span class="lineno"> 162</span>&#160; <span class="keyword">private</span> ThreadResources GetThreadResources()</div>
<div class="line"><a name="l00163"></a><span class="lineno"> 163</span>&#160; {</div>
<div class="line"><a name="l00164"></a><span class="lineno"> 164</span>&#160; ThreadResources resources = threadResources.Get();</div>
<div class="line"><a name="l00165"></a><span class="lineno"> 165</span>&#160; <span class="keywordflow">if</span> (resources == null)</div>
<div class="line"><a name="l00166"></a><span class="lineno"> 166</span>&#160; {</div>
<div class="line"><a name="l00167"></a><span class="lineno"> 167</span>&#160; resources = <span class="keyword">new</span> ThreadResources</div>
<div class="line"><a name="l00168"></a><span class="lineno"> 168</span>&#160; {termEnum = Terms(), termInfoCache = <span class="keyword">new</span> SimpleLRUCache&lt;Term, TermInfo&gt;(DEFAULT_CACHE_SIZE)};</div>
<div class="line"><a name="l00169"></a><span class="lineno"> 169</span>&#160; <span class="comment">// Cache does not have to be thread-safe, it is only used by one thread at the same time</span></div>
<div class="line"><a name="l00170"></a><span class="lineno"> 170</span>&#160; threadResources.Set(resources);</div>
<div class="line"><a name="l00171"></a><span class="lineno"> 171</span>&#160; }</div>
<div class="line"><a name="l00172"></a><span class="lineno"> 172</span>&#160; <span class="keywordflow">return</span> resources;</div>
<div class="line"><a name="l00173"></a><span class="lineno"> 173</span>&#160; }</div>
<div class="line"><a name="l00174"></a><span class="lineno"> 174</span>&#160; </div>
<div class="line"><a name="l00175"></a><span class="lineno"> 175</span>&#160; </div>
<div class="line"><a name="l00177"></a><span class="lineno"> 177</span>&#160; <span class="keyword">private</span> <span class="keywordtype">int</span> GetIndexOffset(<a class="code" href="_more_like_this_8cs.html#a8797eb30ce21b31829d3e3a43a20e3b9">Term</a> term)</div>
<div class="line"><a name="l00178"></a><span class="lineno"> 178</span>&#160; {</div>
<div class="line"><a name="l00179"></a><span class="lineno"> 179</span>&#160; <span class="keywordtype">int</span> lo = 0; <span class="comment">// binary search indexTerms[]</span></div>
<div class="line"><a name="l00180"></a><span class="lineno"> 180</span>&#160; <span class="keywordtype">int</span> hi = indexTerms.Length - 1;</div>
<div class="line"><a name="l00181"></a><span class="lineno"> 181</span>&#160; </div>
<div class="line"><a name="l00182"></a><span class="lineno"> 182</span>&#160; <span class="keywordflow">while</span> (hi &gt;= lo)</div>
<div class="line"><a name="l00183"></a><span class="lineno"> 183</span>&#160; {</div>
<div class="line"><a name="l00184"></a><span class="lineno"> 184</span>&#160; <span class="keywordtype">int</span> mid = <a class="code" href="class_lucene_1_1_net_1_1_support_1_1_number.html" title="A simple class for number conversions. ">Number</a>.<a class="code" href="class_lucene_1_1_net_1_1_support_1_1_number.html#aafe44e2acf7feacad6abd2a425730644" title="Performs an unsigned bitwise right shift with the specified number ">URShift</a>((lo + hi), 1);</div>
<div class="line"><a name="l00185"></a><span class="lineno"> 185</span>&#160; <span class="keywordtype">int</span> delta = term.CompareTo(indexTerms[mid]);</div>
<div class="line"><a name="l00186"></a><span class="lineno"> 186</span>&#160; <span class="keywordflow">if</span> (delta &lt; 0)</div>
<div class="line"><a name="l00187"></a><span class="lineno"> 187</span>&#160; hi = mid - 1;</div>
<div class="line"><a name="l00188"></a><span class="lineno"> 188</span>&#160; <span class="keywordflow">else</span> <span class="keywordflow">if</span> (delta &gt; 0)</div>
<div class="line"><a name="l00189"></a><span class="lineno"> 189</span>&#160; lo = mid + 1;</div>
<div class="line"><a name="l00190"></a><span class="lineno"> 190</span>&#160; <span class="keywordflow">else</span></div>
<div class="line"><a name="l00191"></a><span class="lineno"> 191</span>&#160; <span class="keywordflow">return</span> mid;</div>
<div class="line"><a name="l00192"></a><span class="lineno"> 192</span>&#160; }</div>
<div class="line"><a name="l00193"></a><span class="lineno"> 193</span>&#160; <span class="keywordflow">return</span> hi;</div>
<div class="line"><a name="l00194"></a><span class="lineno"> 194</span>&#160; }</div>
<div class="line"><a name="l00195"></a><span class="lineno"> 195</span>&#160; </div>
<div class="line"><a name="l00196"></a><span class="lineno"> 196</span>&#160; <span class="keyword">private</span> <span class="keywordtype">void</span> SeekEnum(SegmentTermEnum enumerator, <span class="keywordtype">int</span> indexOffset)</div>
<div class="line"><a name="l00197"></a><span class="lineno"> 197</span>&#160; {</div>
<div class="line"><a name="l00198"></a><span class="lineno"> 198</span>&#160; enumerator.Seek(indexPointers[indexOffset], ((<span class="keywordtype">long</span>)indexOffset * totalIndexInterval) - 1, indexTerms[indexOffset], indexInfos[indexOffset]);</div>
<div class="line"><a name="l00199"></a><span class="lineno"> 199</span>&#160; }</div>
<div class="line"><a name="l00200"></a><span class="lineno"> 200</span>&#160; </div>
<div class="line"><a name="l00202"></a><span class="lineno"> 202</span>&#160; <span class="keyword">internal</span> <a class="code" href="_field_phrase_list_8cs.html#a2d1cbe4942c5a9c67961e361dbfb4a51">TermInfo</a> Get(<a class="code" href="_more_like_this_8cs.html#a8797eb30ce21b31829d3e3a43a20e3b9">Term</a> term)</div>
<div class="line"><a name="l00203"></a><span class="lineno"> 203</span>&#160; {</div>
<div class="line"><a name="l00204"></a><span class="lineno"> 204</span>&#160; <span class="keywordflow">return</span> Get(term, <span class="keyword">true</span>);</div>
<div class="line"><a name="l00205"></a><span class="lineno"> 205</span>&#160; }</div>
<div class="line"><a name="l00206"></a><span class="lineno"> 206</span>&#160; </div>
<div class="line"><a name="l00208"></a><span class="lineno"> 208</span>&#160; <span class="keyword">private</span> <a class="code" href="_field_phrase_list_8cs.html#a2d1cbe4942c5a9c67961e361dbfb4a51">TermInfo</a> Get(<a class="code" href="_more_like_this_8cs.html#a8797eb30ce21b31829d3e3a43a20e3b9">Term</a> term, <span class="keywordtype">bool</span> useCache)</div>
<div class="line"><a name="l00209"></a><span class="lineno"> 209</span>&#160; {</div>
<div class="line"><a name="l00210"></a><span class="lineno"> 210</span>&#160; <span class="keywordflow">if</span> (size == 0)</div>
<div class="line"><a name="l00211"></a><span class="lineno"> 211</span>&#160; <span class="keywordflow">return</span> null;</div>
<div class="line"><a name="l00212"></a><span class="lineno"> 212</span>&#160; </div>
<div class="line"><a name="l00213"></a><span class="lineno"> 213</span>&#160; EnsureIndexIsRead();</div>
<div class="line"><a name="l00214"></a><span class="lineno"> 214</span>&#160; </div>
<div class="line"><a name="l00215"></a><span class="lineno"> 215</span>&#160; <a class="code" href="_field_phrase_list_8cs.html#a2d1cbe4942c5a9c67961e361dbfb4a51">TermInfo</a> ti;</div>
<div class="line"><a name="l00216"></a><span class="lineno"> 216</span>&#160; ThreadResources resources = GetThreadResources();</div>
<div class="line"><a name="l00217"></a><span class="lineno"> 217</span>&#160; Cache&lt;Term, TermInfo&gt; cache = null;</div>
<div class="line"><a name="l00218"></a><span class="lineno"> 218</span>&#160; </div>
<div class="line"><a name="l00219"></a><span class="lineno"> 219</span>&#160; <span class="keywordflow">if</span> (useCache)</div>
<div class="line"><a name="l00220"></a><span class="lineno"> 220</span>&#160; {</div>
<div class="line"><a name="l00221"></a><span class="lineno"> 221</span>&#160; cache = resources.termInfoCache;</div>
<div class="line"><a name="l00222"></a><span class="lineno"> 222</span>&#160; <span class="comment">// check the cache first if the term was recently looked up</span></div>
<div class="line"><a name="l00223"></a><span class="lineno"> 223</span>&#160; ti = cache.Get(term);</div>
<div class="line"><a name="l00224"></a><span class="lineno"> 224</span>&#160; <span class="keywordflow">if</span> (ti != null)</div>
<div class="line"><a name="l00225"></a><span class="lineno"> 225</span>&#160; {</div>
<div class="line"><a name="l00226"></a><span class="lineno"> 226</span>&#160; <span class="keywordflow">return</span> ti;</div>
<div class="line"><a name="l00227"></a><span class="lineno"> 227</span>&#160; }</div>
<div class="line"><a name="l00228"></a><span class="lineno"> 228</span>&#160; }</div>
<div class="line"><a name="l00229"></a><span class="lineno"> 229</span>&#160; </div>
<div class="line"><a name="l00230"></a><span class="lineno"> 230</span>&#160; <span class="comment">// optimize sequential access: first try scanning cached enum w/o seeking</span></div>
<div class="line"><a name="l00231"></a><span class="lineno"> 231</span>&#160; SegmentTermEnum enumerator = resources.termEnum;</div>
<div class="line"><a name="l00232"></a><span class="lineno"> 232</span>&#160; <span class="keywordflow">if</span> (enumerator.Term != null &amp;&amp; ((enumerator.Prev() != null &amp;&amp; term.CompareTo(enumerator.Prev()) &gt; 0) || term.CompareTo(enumerator.Term) &gt;= 0))</div>
<div class="line"><a name="l00233"></a><span class="lineno"> 233</span>&#160; {</div>
<div class="line"><a name="l00234"></a><span class="lineno"> 234</span>&#160; <span class="keywordtype">int</span> enumOffset = (int) (enumerator.position / totalIndexInterval) + 1;</div>
<div class="line"><a name="l00235"></a><span class="lineno"> 235</span>&#160; <span class="keywordflow">if</span> (indexTerms.Length == enumOffset || term.CompareTo(indexTerms[enumOffset]) &lt; 0)</div>
<div class="line"><a name="l00236"></a><span class="lineno"> 236</span>&#160; {</div>
<div class="line"><a name="l00237"></a><span class="lineno"> 237</span>&#160; <span class="comment">// no need to seek</span></div>
<div class="line"><a name="l00238"></a><span class="lineno"> 238</span>&#160; </div>
<div class="line"><a name="l00239"></a><span class="lineno"> 239</span>&#160; <span class="keywordtype">int</span> numScans = enumerator.ScanTo(term);</div>
<div class="line"><a name="l00240"></a><span class="lineno"> 240</span>&#160; <span class="keywordflow">if</span> (enumerator.Term != null &amp;&amp; term.CompareTo(enumerator.Term) == 0)</div>
<div class="line"><a name="l00241"></a><span class="lineno"> 241</span>&#160; {</div>
<div class="line"><a name="l00242"></a><span class="lineno"> 242</span>&#160; ti = enumerator.TermInfo();</div>
<div class="line"><a name="l00243"></a><span class="lineno"> 243</span>&#160; <span class="keywordflow">if</span> (cache != null &amp;&amp; numScans &gt; 1)</div>
<div class="line"><a name="l00244"></a><span class="lineno"> 244</span>&#160; {</div>
<div class="line"><a name="l00245"></a><span class="lineno"> 245</span>&#160; <span class="comment">// we only want to put this TermInfo into the cache if</span></div>
<div class="line"><a name="l00246"></a><span class="lineno"> 246</span>&#160; <span class="comment">// scanEnum skipped more than one dictionary entry.</span></div>
<div class="line"><a name="l00247"></a><span class="lineno"> 247</span>&#160; <span class="comment">// This prevents RangeQueries or WildcardQueries to </span></div>
<div class="line"><a name="l00248"></a><span class="lineno"> 248</span>&#160; <span class="comment">// wipe out the cache when they iterate over a large numbers</span></div>
<div class="line"><a name="l00249"></a><span class="lineno"> 249</span>&#160; <span class="comment">// of terms in order</span></div>
<div class="line"><a name="l00250"></a><span class="lineno"> 250</span>&#160; cache.Put(term, ti);</div>
<div class="line"><a name="l00251"></a><span class="lineno"> 251</span>&#160; }</div>
<div class="line"><a name="l00252"></a><span class="lineno"> 252</span>&#160; }</div>
<div class="line"><a name="l00253"></a><span class="lineno"> 253</span>&#160; <span class="keywordflow">else</span></div>
<div class="line"><a name="l00254"></a><span class="lineno"> 254</span>&#160; {</div>
<div class="line"><a name="l00255"></a><span class="lineno"> 255</span>&#160; ti = null;</div>
<div class="line"><a name="l00256"></a><span class="lineno"> 256</span>&#160; }</div>
<div class="line"><a name="l00257"></a><span class="lineno"> 257</span>&#160; </div>
<div class="line"><a name="l00258"></a><span class="lineno"> 258</span>&#160; <span class="keywordflow">return</span> ti;</div>
<div class="line"><a name="l00259"></a><span class="lineno"> 259</span>&#160; }</div>
<div class="line"><a name="l00260"></a><span class="lineno"> 260</span>&#160; }</div>
<div class="line"><a name="l00261"></a><span class="lineno"> 261</span>&#160; </div>
<div class="line"><a name="l00262"></a><span class="lineno"> 262</span>&#160; <span class="comment">// random-access: must seek</span></div>
<div class="line"><a name="l00263"></a><span class="lineno"> 263</span>&#160; SeekEnum(enumerator, GetIndexOffset(term));</div>
<div class="line"><a name="l00264"></a><span class="lineno"> 264</span>&#160; enumerator.ScanTo(term);</div>
<div class="line"><a name="l00265"></a><span class="lineno"> 265</span>&#160; <span class="keywordflow">if</span> (enumerator.Term != null &amp;&amp; term.CompareTo(enumerator.Term) == 0)</div>
<div class="line"><a name="l00266"></a><span class="lineno"> 266</span>&#160; {</div>
<div class="line"><a name="l00267"></a><span class="lineno"> 267</span>&#160; ti = enumerator.TermInfo();</div>
<div class="line"><a name="l00268"></a><span class="lineno"> 268</span>&#160; <span class="keywordflow">if</span> (cache != null)</div>
<div class="line"><a name="l00269"></a><span class="lineno"> 269</span>&#160; {</div>
<div class="line"><a name="l00270"></a><span class="lineno"> 270</span>&#160; cache.Put(term, ti);</div>
<div class="line"><a name="l00271"></a><span class="lineno"> 271</span>&#160; }</div>
<div class="line"><a name="l00272"></a><span class="lineno"> 272</span>&#160; }</div>
<div class="line"><a name="l00273"></a><span class="lineno"> 273</span>&#160; <span class="keywordflow">else</span></div>
<div class="line"><a name="l00274"></a><span class="lineno"> 274</span>&#160; {</div>
<div class="line"><a name="l00275"></a><span class="lineno"> 275</span>&#160; ti = null;</div>
<div class="line"><a name="l00276"></a><span class="lineno"> 276</span>&#160; }</div>
<div class="line"><a name="l00277"></a><span class="lineno"> 277</span>&#160; <span class="keywordflow">return</span> ti;</div>
<div class="line"><a name="l00278"></a><span class="lineno"> 278</span>&#160; }</div>
<div class="line"><a name="l00279"></a><span class="lineno"> 279</span>&#160; </div>
<div class="line"><a name="l00280"></a><span class="lineno"> 280</span>&#160; <span class="keyword">private</span> <span class="keywordtype">void</span> EnsureIndexIsRead()</div>
<div class="line"><a name="l00281"></a><span class="lineno"> 281</span>&#160; {</div>
<div class="line"><a name="l00282"></a><span class="lineno"> 282</span>&#160; <span class="keywordflow">if</span> (indexTerms == null)</div>
<div class="line"><a name="l00283"></a><span class="lineno"> 283</span>&#160; {</div>
<div class="line"><a name="l00284"></a><span class="lineno"> 284</span>&#160; <span class="keywordflow">throw</span> <span class="keyword">new</span> SystemException(<span class="stringliteral">&quot;terms index was not loaded when this reader was created&quot;</span>);</div>
<div class="line"><a name="l00285"></a><span class="lineno"> 285</span>&#160; }</div>
<div class="line"><a name="l00286"></a><span class="lineno"> 286</span>&#160; }</div>
<div class="line"><a name="l00287"></a><span class="lineno"> 287</span>&#160; </div>
<div class="line"><a name="l00289"></a><span class="lineno"> 289</span>&#160; <span class="keyword">internal</span> <span class="keywordtype">long</span> GetPosition(<a class="code" href="_more_like_this_8cs.html#a8797eb30ce21b31829d3e3a43a20e3b9">Term</a> term)</div>
<div class="line"><a name="l00290"></a><span class="lineno"> 290</span>&#160; {</div>
<div class="line"><a name="l00291"></a><span class="lineno"> 291</span>&#160; <span class="keywordflow">if</span> (size == 0)</div>
<div class="line"><a name="l00292"></a><span class="lineno"> 292</span>&#160; <span class="keywordflow">return</span> - 1;</div>
<div class="line"><a name="l00293"></a><span class="lineno"> 293</span>&#160; </div>
<div class="line"><a name="l00294"></a><span class="lineno"> 294</span>&#160; EnsureIndexIsRead();</div>
<div class="line"><a name="l00295"></a><span class="lineno"> 295</span>&#160; <span class="keywordtype">int</span> indexOffset = GetIndexOffset(term);</div>
<div class="line"><a name="l00296"></a><span class="lineno"> 296</span>&#160; </div>
<div class="line"><a name="l00297"></a><span class="lineno"> 297</span>&#160; SegmentTermEnum enumerator = GetThreadResources().termEnum;</div>
<div class="line"><a name="l00298"></a><span class="lineno"> 298</span>&#160; SeekEnum(enumerator, indexOffset);</div>
<div class="line"><a name="l00299"></a><span class="lineno"> 299</span>&#160; </div>
<div class="line"><a name="l00300"></a><span class="lineno"> 300</span>&#160; <span class="keywordflow">while</span> (term.CompareTo(enumerator.Term) &gt; 0 &amp;&amp; enumerator.Next())</div>
<div class="line"><a name="l00301"></a><span class="lineno"> 301</span>&#160; {</div>
<div class="line"><a name="l00302"></a><span class="lineno"> 302</span>&#160; }</div>
<div class="line"><a name="l00303"></a><span class="lineno"> 303</span>&#160; </div>
<div class="line"><a name="l00304"></a><span class="lineno"> 304</span>&#160; <span class="keywordflow">if</span> (term.CompareTo(enumerator.Term) == 0)</div>
<div class="line"><a name="l00305"></a><span class="lineno"> 305</span>&#160; <span class="keywordflow">return</span> enumerator.position;</div>
<div class="line"><a name="l00306"></a><span class="lineno"> 306</span>&#160; <span class="keywordflow">else</span></div>
<div class="line"><a name="l00307"></a><span class="lineno"> 307</span>&#160; <span class="keywordflow">return</span> - 1;</div>
<div class="line"><a name="l00308"></a><span class="lineno"> 308</span>&#160; }</div>
<div class="line"><a name="l00309"></a><span class="lineno"> 309</span>&#160; </div>
<div class="line"><a name="l00311"></a><span class="lineno"><a class="code" href="class_lucene_1_1_net_1_1_index_1_1_term_infos_reader.html#a043c14bf673f5065fb7cc3eef6e39cb3"> 311</a></span>&#160; <span class="keyword">public</span> SegmentTermEnum Terms()</div>
<div class="line"><a name="l00312"></a><span class="lineno"> 312</span>&#160; {</div>
<div class="line"><a name="l00313"></a><span class="lineno"> 313</span>&#160; <span class="keywordflow">return</span> (SegmentTermEnum) origEnum.Clone();</div>
<div class="line"><a name="l00314"></a><span class="lineno"> 314</span>&#160; }</div>
<div class="line"><a name="l00315"></a><span class="lineno"> 315</span>&#160; </div>
<div class="line"><a name="l00317"></a><span class="lineno"><a class="code" href="class_lucene_1_1_net_1_1_index_1_1_term_infos_reader.html#a886d4441491576f3b7cafca64a31071e"> 317</a></span>&#160; <span class="keyword">public</span> SegmentTermEnum Terms(<a class="code" href="class_lucene_1_1_net_1_1_index_1_1_term.html" title="A Term represents a word from text. This is the unit of search. It is composed of two elements...">Term</a> term)</div>
<div class="line"><a name="l00318"></a><span class="lineno"> 318</span>&#160; {</div>
<div class="line"><a name="l00319"></a><span class="lineno"> 319</span>&#160; <span class="comment">// don&#39;t use the cache in this call because we want to reposition the</span></div>
<div class="line"><a name="l00320"></a><span class="lineno"> 320</span>&#160; <span class="comment">// enumeration</span></div>
<div class="line"><a name="l00321"></a><span class="lineno"> 321</span>&#160; Get(term, <span class="keyword">false</span>);</div>
<div class="line"><a name="l00322"></a><span class="lineno"> 322</span>&#160; <span class="keywordflow">return</span> (SegmentTermEnum) GetThreadResources().termEnum.Clone();</div>
<div class="line"><a name="l00323"></a><span class="lineno"> 323</span>&#160; }</div>
<div class="line"><a name="l00324"></a><span class="lineno"> 324</span>&#160; }</div>
<div class="line"><a name="l00325"></a><span class="lineno"> 325</span>&#160;}</div>
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