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| <div class="title">QueryScorer.cs</div> </div> |
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| <a href="_query_scorer_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"> * 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> <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> <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> <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> <span class="comment"> * (the "License"); you may not use this file except in compliance with</span></div> |
| <div class="line"><a name="l00007"></a><span class="lineno"> 7</span> <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> <span class="comment"> * </span></div> |
| <div class="line"><a name="l00009"></a><span class="lineno"> 9</span> <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> <span class="comment"> * </span></div> |
| <div class="line"><a name="l00011"></a><span class="lineno"> 11</span> <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> <span class="comment"> * distributed under the License is distributed on an "AS IS" BASIS,</span></div> |
| <div class="line"><a name="l00013"></a><span class="lineno"> 13</span> <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> <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> <span class="comment"> * limitations under the License.</span></div> |
| <div class="line"><a name="l00016"></a><span class="lineno"> 16</span> <span class="comment"> */</span></div> |
| <div class="line"><a name="l00017"></a><span class="lineno"> 17</span> </div> |
| <div class="line"><a name="l00018"></a><span class="lineno"> 18</span> <span class="keyword">using</span> System;</div> |
| <div class="line"><a name="l00019"></a><span class="lineno"> 19</span> <span class="keyword">using</span> System.Collections.Generic;</div> |
| <div class="line"><a name="l00020"></a><span class="lineno"> 20</span> <span class="keyword">using</span> Lucene.Net.Analysis;</div> |
| <div class="line"><a name="l00021"></a><span class="lineno"> 21</span> <span class="keyword">using</span> Lucene.Net.Analysis.Tokenattributes;</div> |
| <div class="line"><a name="l00022"></a><span class="lineno"> 22</span> <span class="keyword">using</span> Lucene.Net.Index;</div> |
| <div class="line"><a name="l00023"></a><span class="lineno"> 23</span> <span class="keyword">using</span> Lucene.Net.Index.Memory;</div> |
| <div class="line"><a name="l00024"></a><span class="lineno"> 24</span> <span class="keyword">using</span> Lucene.Net.Search.Spans;</div> |
| <div class="line"><a name="l00025"></a><span class="lineno"> 25</span> <span class="keyword">using</span> Lucene.Net.Support;</div> |
| <div class="line"><a name="l00026"></a><span class="lineno"> 26</span> <span class="keyword">using</span> Lucene.Net.Util;</div> |
| <div class="line"><a name="l00027"></a><span class="lineno"> 27</span> </div> |
| <div class="line"><a name="l00028"></a><span class="lineno"> 28</span> <span class="keyword">namespace </span>Lucene.Net.Search.Highlight</div> |
| <div class="line"><a name="l00029"></a><span class="lineno"> 29</span> {</div> |
| <div class="line"><a name="l00030"></a><span class="lineno"> 30</span> </div> |
| <div class="line"><a name="l00037"></a><span class="lineno"><a class="code" href="class_lucene_1_1_net_1_1_search_1_1_highlight_1_1_query_scorer.html"> 37</a></span>  <span class="keyword">public</span> <span class="keyword">class </span><a class="code" href="class_lucene_1_1_net_1_1_search_1_1_highlight_1_1_query_scorer.html" title="IScorer implementation which scores text fragments by the number of unique query terms found...">QueryScorer</a> : <a class="code" href="interface_lucene_1_1_net_1_1_search_1_1_highlight_1_1_i_scorer.html" title="Adds to the score for a fragment based on its tokens">IScorer</a></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>  <span class="keyword">private</span> <span class="keywordtype">float</span> totalScore;</div> |
| <div class="line"><a name="l00040"></a><span class="lineno"> 40</span>  <span class="keyword">private</span> ISet<String> foundTerms;</div> |
| <div class="line"><a name="l00041"></a><span class="lineno"> 41</span>  <span class="keyword">private</span> IDictionary<String, WeightedSpanTerm> fieldWeightedSpanTerms;</div> |
| <div class="line"><a name="l00042"></a><span class="lineno"> 42</span>  <span class="keyword">private</span> <span class="keywordtype">float</span> maxTermWeight;</div> |
| <div class="line"><a name="l00043"></a><span class="lineno"> 43</span>  <span class="keyword">private</span> <span class="keywordtype">int</span> position = -1;</div> |
| <div class="line"><a name="l00044"></a><span class="lineno"> 44</span>  <span class="keyword">private</span> String defaultField;</div> |
| <div class="line"><a name="l00045"></a><span class="lineno"> 45</span>  <span class="keyword">private</span> <a class="code" href="interface_lucene_1_1_net_1_1_analysis_1_1_tokenattributes_1_1_i_term_attribute.html" title="The term text of a Token.">ITermAttribute</a> termAtt;</div> |
| <div class="line"><a name="l00046"></a><span class="lineno"> 46</span>  <span class="keyword">private</span> <a class="code" href="interface_lucene_1_1_net_1_1_analysis_1_1_tokenattributes_1_1_i_position_increment_attribute.html" title="The positionIncrement determines the position of this token relative to the previous Token in a Token...">IPositionIncrementAttribute</a> posIncAtt;</div> |
| <div class="line"><a name="l00047"></a><span class="lineno"> 47</span>  <span class="keyword">private</span> <span class="keywordtype">bool</span> expandMultiTermQuery = <span class="keyword">true</span>;</div> |
| <div class="line"><a name="l00048"></a><span class="lineno"> 48</span>  <span class="keyword">private</span> <a class="code" href="class_lucene_1_1_net_1_1_search_1_1_query.html" title="The abstract base class for queries. Instantiable subclasses are: TermQuery MultiTermQuery BooleanQ...">Query</a> query;</div> |
| <div class="line"><a name="l00049"></a><span class="lineno"> 49</span>  <span class="keyword">private</span> String field;</div> |
| <div class="line"><a name="l00050"></a><span class="lineno"> 50</span>  <span class="keyword">private</span> <a class="code" href="class_lucene_1_1_net_1_1_index_1_1_index_reader.html" title="IndexReader is an abstract class, providing an interface for accessing an index. Search of an index i...">IndexReader</a> reader;</div> |
| <div class="line"><a name="l00051"></a><span class="lineno"> 51</span>  <span class="keyword">private</span> <span class="keywordtype">bool</span> skipInitExtractor;</div> |
| <div class="line"><a name="l00052"></a><span class="lineno"> 52</span>  <span class="keyword">private</span> <span class="keywordtype">bool</span> wrapToCaching = <span class="keyword">true</span>;</div> |
| <div class="line"><a name="l00053"></a><span class="lineno"> 53</span> </div> |
| <div class="line"><a name="l00058"></a><span class="lineno"><a class="code" href="class_lucene_1_1_net_1_1_search_1_1_highlight_1_1_query_scorer.html#a79bda10ccdf7858edee160b696c63032"> 58</a></span>  <span class="keyword">public</span> <a class="code" href="class_lucene_1_1_net_1_1_search_1_1_highlight_1_1_query_scorer.html" title="IScorer implementation which scores text fragments by the number of unique query terms found...">QueryScorer</a>(<a class="code" href="class_lucene_1_1_net_1_1_search_1_1_query.html" title="The abstract base class for queries. Instantiable subclasses are: TermQuery MultiTermQuery BooleanQ...">Query</a> query)</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>  Init(query, null, null, <span class="keyword">true</span>);</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="l00068"></a><span class="lineno"><a class="code" href="class_lucene_1_1_net_1_1_search_1_1_highlight_1_1_query_scorer.html#abbd39369c4699ca2d0ae9a91e643462c"> 68</a></span>  <span class="keyword">public</span> <a class="code" href="class_lucene_1_1_net_1_1_search_1_1_highlight_1_1_query_scorer.html" title="IScorer implementation which scores text fragments by the number of unique query terms found...">QueryScorer</a>(<a class="code" href="class_lucene_1_1_net_1_1_search_1_1_query.html" title="The abstract base class for queries. Instantiable subclasses are: TermQuery MultiTermQuery BooleanQ...">Query</a> query, String field)</div> |
| <div class="line"><a name="l00069"></a><span class="lineno"> 69</span>  {</div> |
| <div class="line"><a name="l00070"></a><span class="lineno"> 70</span>  Init(query, field, null, <span class="keyword">true</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="l00079"></a><span class="lineno"><a class="code" href="class_lucene_1_1_net_1_1_search_1_1_highlight_1_1_query_scorer.html#acc7939f1d7f3a8454360f97b7fc9da41"> 79</a></span>  <span class="keyword">public</span> <a class="code" href="class_lucene_1_1_net_1_1_search_1_1_highlight_1_1_query_scorer.html" title="IScorer implementation which scores text fragments by the number of unique query terms found...">QueryScorer</a>(<a class="code" href="class_lucene_1_1_net_1_1_search_1_1_query.html" title="The abstract base class for queries. Instantiable subclasses are: TermQuery MultiTermQuery BooleanQ...">Query</a> query, <a class="code" href="class_lucene_1_1_net_1_1_index_1_1_index_reader.html" title="IndexReader is an abstract class, providing an interface for accessing an index. Search of an index i...">IndexReader</a> reader, String field)</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>  Init(query, field, reader, <span class="keyword">true</span>);</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> </div> |
| <div class="line"><a name="l00091"></a><span class="lineno"><a class="code" href="class_lucene_1_1_net_1_1_search_1_1_highlight_1_1_query_scorer.html#a507a212c36fb9b0ba520fbc295968479"> 91</a></span>  <span class="keyword">public</span> <a class="code" href="class_lucene_1_1_net_1_1_search_1_1_highlight_1_1_query_scorer.html" title="IScorer implementation which scores text fragments by the number of unique query terms found...">QueryScorer</a>(<a class="code" href="class_lucene_1_1_net_1_1_search_1_1_query.html" title="The abstract base class for queries. Instantiable subclasses are: TermQuery MultiTermQuery BooleanQ...">Query</a> query, <a class="code" href="class_lucene_1_1_net_1_1_index_1_1_index_reader.html" title="IndexReader is an abstract class, providing an interface for accessing an index. Search of an index i...">IndexReader</a> reader, String field, String defaultField)</div> |
| <div class="line"><a name="l00092"></a><span class="lineno"> 92</span>  {</div> |
| <div class="line"><a name="l00093"></a><span class="lineno"> 93</span>  this.defaultField = <a class="code" href="class_lucene_1_1_net_1_1_util_1_1_string_helper.html" title="Methods for manipulating strings.">StringHelper</a>.<a class="code" href="class_lucene_1_1_net_1_1_util_1_1_string_helper.html#ae7eedf8109fc57ea8bbb0b35d4b85551" title="Return the same string object for all equal strings ">Intern</a>(defaultField);</div> |
| <div class="line"><a name="l00094"></a><span class="lineno"> 94</span>  Init(query, field, reader, <span class="keyword">true</span>);</div> |
| <div class="line"><a name="l00095"></a><span class="lineno"> 95</span>  }</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="l00104"></a><span class="lineno"><a class="code" href="class_lucene_1_1_net_1_1_search_1_1_highlight_1_1_query_scorer.html#a35cda4dd46294b1fd17ac6570422ec08"> 104</a></span>  <span class="keyword">public</span> <a class="code" href="class_lucene_1_1_net_1_1_search_1_1_highlight_1_1_query_scorer.html" title="IScorer implementation which scores text fragments by the number of unique query terms found...">QueryScorer</a>(<a class="code" href="class_lucene_1_1_net_1_1_search_1_1_query.html" title="The abstract base class for queries. Instantiable subclasses are: TermQuery MultiTermQuery BooleanQ...">Query</a> query, String field, String defaultField)</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>  this.defaultField = <a class="code" href="class_lucene_1_1_net_1_1_util_1_1_string_helper.html" title="Methods for manipulating strings.">StringHelper</a>.<a class="code" href="class_lucene_1_1_net_1_1_util_1_1_string_helper.html#ae7eedf8109fc57ea8bbb0b35d4b85551" title="Return the same string object for all equal strings ">Intern</a>(defaultField);</div> |
| <div class="line"><a name="l00107"></a><span class="lineno"> 107</span>  Init(query, field, null, <span class="keyword">true</span>);</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="l00114"></a><span class="lineno"><a class="code" href="class_lucene_1_1_net_1_1_search_1_1_highlight_1_1_query_scorer.html#ae77c88d78c79be1aed0ba2cd2106d838"> 114</a></span>  <span class="keyword">public</span> <a class="code" href="class_lucene_1_1_net_1_1_search_1_1_highlight_1_1_query_scorer.html" title="IScorer implementation which scores text fragments by the number of unique query terms found...">QueryScorer</a>(<a class="code" href="class_lucene_1_1_net_1_1_search_1_1_highlight_1_1_weighted_span_term.html" title="Lightweight class to hold term, Weight, and positions used for scoring this term. ...">WeightedSpanTerm</a>[] weightedTerms)</div> |
| <div class="line"><a name="l00115"></a><span class="lineno"> 115</span>  {</div> |
| <div class="line"><a name="l00116"></a><span class="lineno"> 116</span>  this.fieldWeightedSpanTerms = <span class="keyword">new</span> HashMap<String, WeightedSpanTerm>(weightedTerms.Length);</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>  <span class="keywordflow">foreach</span> (<a class="code" href="class_lucene_1_1_net_1_1_search_1_1_highlight_1_1_weighted_span_term.html" title="Lightweight class to hold term, Weight, and positions used for scoring this term. ...">WeightedSpanTerm</a> t <span class="keywordflow">in</span> weightedTerms)</div> |
| <div class="line"><a name="l00119"></a><span class="lineno"> 119</span>  {</div> |
| <div class="line"><a name="l00120"></a><span class="lineno"> 120</span>  <a class="code" href="class_lucene_1_1_net_1_1_search_1_1_highlight_1_1_weighted_span_term.html" title="Lightweight class to hold term, Weight, and positions used for scoring this term. ...">WeightedSpanTerm</a> existingTerm = fieldWeightedSpanTerms[t.<a class="code" href="class_lucene_1_1_net_1_1_search_1_1_highlight_1_1_weighted_term.html#aca239a461b884e0a917f100d2e9fc011" title="the term value (stemmed) ">Term</a>];</div> |
| <div class="line"><a name="l00121"></a><span class="lineno"> 121</span> </div> |
| <div class="line"><a name="l00122"></a><span class="lineno"> 122</span>  <span class="keywordflow">if</span> ((existingTerm == null) ||</div> |
| <div class="line"><a name="l00123"></a><span class="lineno"> 123</span>  (existingTerm.<a class="code" href="class_lucene_1_1_net_1_1_search_1_1_highlight_1_1_weighted_term.html#aef3a222c89817d52c24034ab09dcc394" title="the Weight associated with this term ">Weight</a> < t.<a class="code" href="class_lucene_1_1_net_1_1_search_1_1_highlight_1_1_weighted_term.html#aef3a222c89817d52c24034ab09dcc394" title="the Weight associated with this term ">Weight</a>))</div> |
| <div class="line"><a name="l00124"></a><span class="lineno"> 124</span>  {</div> |
| <div class="line"><a name="l00125"></a><span class="lineno"> 125</span>  <span class="comment">// if a term is defined more than once, always use the highest</span></div> |
| <div class="line"><a name="l00126"></a><span class="lineno"> 126</span>  <span class="comment">// scoring Weight</span></div> |
| <div class="line"><a name="l00127"></a><span class="lineno"> 127</span>  fieldWeightedSpanTerms[t.<a class="code" href="class_lucene_1_1_net_1_1_search_1_1_highlight_1_1_weighted_term.html#aca239a461b884e0a917f100d2e9fc011" title="the term value (stemmed) ">Term</a>] = t;</div> |
| <div class="line"><a name="l00128"></a><span class="lineno"> 128</span>  maxTermWeight = Math.Max(maxTermWeight, t.<a class="code" href="class_lucene_1_1_net_1_1_search_1_1_highlight_1_1_weighted_term.html#aef3a222c89817d52c24034ab09dcc394" title="the Weight associated with this term ">Weight</a>);</div> |
| <div class="line"><a name="l00129"></a><span class="lineno"> 129</span>  }</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>  skipInitExtractor = <span class="keyword">true</span>;</div> |
| <div class="line"><a name="l00132"></a><span class="lineno"> 132</span>  }</div> |
| <div class="line"><a name="l00133"></a><span class="lineno"> 133</span> </div> |
| <div class="line"><a name="l00135"></a><span class="lineno"> 135</span>  <span class="keyword">public</span> <span class="keywordtype">float</span> FragmentScore</div> |
| <div class="line"><a name="l00136"></a><span class="lineno"><a class="code" href="class_lucene_1_1_net_1_1_search_1_1_highlight_1_1_query_scorer.html#ae8edb9f7aafa7add4d4c13416081975b"> 136</a></span>  {</div> |
| <div class="line"><a name="l00137"></a><span class="lineno"> 137</span>  <span class="keyword">get</span> { <span class="keywordflow">return</span> totalScore; }</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="l00143"></a><span class="lineno"> 143</span>  <span class="keyword">public</span> <span class="keywordtype">float</span> MaxTermWeight</div> |
| <div class="line"><a name="l00144"></a><span class="lineno"><a class="code" href="class_lucene_1_1_net_1_1_search_1_1_highlight_1_1_query_scorer.html#a2f1088d5fa818bbeed6d1df9dbccbc65"> 144</a></span>  {</div> |
| <div class="line"><a name="l00145"></a><span class="lineno"> 145</span>  <span class="keyword">get</span> { <span class="keywordflow">return</span> maxTermWeight; }</div> |
| <div class="line"><a name="l00146"></a><span class="lineno"> 146</span>  }</div> |
| <div class="line"><a name="l00147"></a><span class="lineno"> 147</span> </div> |
| <div class="line"><a name="l00149"></a><span class="lineno"><a class="code" href="class_lucene_1_1_net_1_1_search_1_1_highlight_1_1_query_scorer.html#a67151b0beabf0aea2e0805660cf2c097"> 149</a></span>  <span class="keyword">public</span> <span class="keywordtype">float</span> GetTokenScore()</div> |
| <div class="line"><a name="l00150"></a><span class="lineno"> 150</span>  {</div> |
| <div class="line"><a name="l00151"></a><span class="lineno"> 151</span>  position += posIncAtt.PositionIncrement;</div> |
| <div class="line"><a name="l00152"></a><span class="lineno"> 152</span>  String termText = termAtt.<a class="code" href="class_lucene_1_1_net_1_1_search_1_1_highlight_1_1_weighted_term.html#aca239a461b884e0a917f100d2e9fc011" title="the term value (stemmed) ">Term</a>;</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>  <a class="code" href="class_lucene_1_1_net_1_1_search_1_1_highlight_1_1_weighted_span_term.html" title="Lightweight class to hold term, Weight, and positions used for scoring this term. ...">WeightedSpanTerm</a> weightedSpanTerm;</div> |
| <div class="line"><a name="l00155"></a><span class="lineno"> 155</span> </div> |
| <div class="line"><a name="l00156"></a><span class="lineno"> 156</span>  <span class="keywordflow">if</span> ((weightedSpanTerm = fieldWeightedSpanTerms[termText]) == null)</div> |
| <div class="line"><a name="l00157"></a><span class="lineno"> 157</span>  {</div> |
| <div class="line"><a name="l00158"></a><span class="lineno"> 158</span>  <span class="keywordflow">return</span> 0;</div> |
| <div class="line"><a name="l00159"></a><span class="lineno"> 159</span>  }</div> |
| <div class="line"><a name="l00160"></a><span class="lineno"> 160</span> </div> |
| <div class="line"><a name="l00161"></a><span class="lineno"> 161</span>  <span class="keywordflow">if</span> (weightedSpanTerm.<a class="code" href="class_lucene_1_1_net_1_1_search_1_1_highlight_1_1_weighted_span_term.html#abc3c5b61b73e9e18522ada11e5dda783">IsPositionSensitive</a>() &&</div> |
| <div class="line"><a name="l00162"></a><span class="lineno"> 162</span>  !weightedSpanTerm.<a class="code" href="class_lucene_1_1_net_1_1_search_1_1_highlight_1_1_weighted_span_term.html#a7d20abf4cb992be1fd27115060f2c63c" title="Checks to see if this term is valid at position. ">CheckPosition</a>(position))</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="keywordflow">return</span> 0;</div> |
| <div class="line"><a name="l00165"></a><span class="lineno"> 165</span>  }</div> |
| <div class="line"><a name="l00166"></a><span class="lineno"> 166</span> </div> |
| <div class="line"><a name="l00167"></a><span class="lineno"> 167</span>  <span class="keywordtype">float</span> score = weightedSpanTerm.<a class="code" href="class_lucene_1_1_net_1_1_search_1_1_highlight_1_1_weighted_term.html#aef3a222c89817d52c24034ab09dcc394" title="the Weight associated with this term ">Weight</a>;</div> |
| <div class="line"><a name="l00168"></a><span class="lineno"> 168</span> </div> |
| <div class="line"><a name="l00169"></a><span class="lineno"> 169</span>  <span class="comment">// found a query term - is it unique in this doc?</span></div> |
| <div class="line"><a name="l00170"></a><span class="lineno"> 170</span>  <span class="keywordflow">if</span> (!foundTerms.Contains(termText))</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>  totalScore += score;</div> |
| <div class="line"><a name="l00173"></a><span class="lineno"> 173</span>  foundTerms.Add(termText);</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> </div> |
| <div class="line"><a name="l00176"></a><span class="lineno"> 176</span>  <span class="keywordflow">return</span> score;</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> </div> |
| <div class="line"><a name="l00180"></a><span class="lineno"><a class="code" href="class_lucene_1_1_net_1_1_search_1_1_highlight_1_1_query_scorer.html#a9f5aa50db1a026318ca0694e826f6463"> 180</a></span>  <span class="keyword">public</span> <a class="code" href="class_lucene_1_1_net_1_1_analysis_1_1_token_stream.html" title="A TokenStream enumerates the sequence of tokens, either from Fields of a Document or from query text...">TokenStream</a> Init(<a class="code" href="class_lucene_1_1_net_1_1_analysis_1_1_token_stream.html" title="A TokenStream enumerates the sequence of tokens, either from Fields of a Document or from query text...">TokenStream</a> tokenStream)</div> |
| <div class="line"><a name="l00181"></a><span class="lineno"> 181</span>  {</div> |
| <div class="line"><a name="l00182"></a><span class="lineno"> 182</span>  position = -1;</div> |
| <div class="line"><a name="l00183"></a><span class="lineno"> 183</span>  termAtt = tokenStream.AddAttribute<<a class="code" href="interface_lucene_1_1_net_1_1_analysis_1_1_tokenattributes_1_1_i_term_attribute.html" title="The term text of a Token.">ITermAttribute</a>>();</div> |
| <div class="line"><a name="l00184"></a><span class="lineno"> 184</span>  posIncAtt = tokenStream.AddAttribute<<a class="code" href="interface_lucene_1_1_net_1_1_analysis_1_1_tokenattributes_1_1_i_position_increment_attribute.html" title="The positionIncrement determines the position of this token relative to the previous Token in a Token...">IPositionIncrementAttribute</a>>();</div> |
| <div class="line"><a name="l00185"></a><span class="lineno"> 185</span>  <span class="keywordflow">if</span> (!skipInitExtractor)</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>  <span class="keywordflow">if</span> (fieldWeightedSpanTerms != null)</div> |
| <div class="line"><a name="l00188"></a><span class="lineno"> 188</span>  {</div> |
| <div class="line"><a name="l00189"></a><span class="lineno"> 189</span>  fieldWeightedSpanTerms.Clear();</div> |
| <div class="line"><a name="l00190"></a><span class="lineno"> 190</span>  }</div> |
| <div class="line"><a name="l00191"></a><span class="lineno"> 191</span>  <span class="keywordflow">return</span> InitExtractor(tokenStream);</div> |
| <div class="line"><a name="l00192"></a><span class="lineno"> 192</span>  }</div> |
| <div class="line"><a name="l00193"></a><span class="lineno"> 193</span>  <span class="keywordflow">return</span> null;</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="l00202"></a><span class="lineno"><a class="code" href="class_lucene_1_1_net_1_1_search_1_1_highlight_1_1_query_scorer.html#a99ca8d14ff2ca5bde0b34c42a8d154f4"> 202</a></span>  <span class="keyword">public</span> <a class="code" href="class_lucene_1_1_net_1_1_search_1_1_highlight_1_1_weighted_span_term.html" title="Lightweight class to hold term, Weight, and positions used for scoring this term. ...">WeightedSpanTerm</a> GetWeightedSpanTerm(String token)</div> |
| <div class="line"><a name="l00203"></a><span class="lineno"> 203</span>  {</div> |
| <div class="line"><a name="l00204"></a><span class="lineno"> 204</span>  <span class="keywordflow">return</span> fieldWeightedSpanTerms[token];</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>  </div> |
| <div class="line"><a name="l00207"></a><span class="lineno"> 207</span>  <span class="keyword">private</span> <span class="keywordtype">void</span> Init(<a class="code" href="class_lucene_1_1_net_1_1_search_1_1_query.html" title="The abstract base class for queries. Instantiable subclasses are: TermQuery MultiTermQuery BooleanQ...">Query</a> query, String field, <a class="code" href="class_lucene_1_1_net_1_1_index_1_1_index_reader.html" title="IndexReader is an abstract class, providing an interface for accessing an index. Search of an index i...">IndexReader</a> reader, <span class="keywordtype">bool</span> expandMultiTermQuery)</div> |
| <div class="line"><a name="l00208"></a><span class="lineno"> 208</span>  {</div> |
| <div class="line"><a name="l00209"></a><span class="lineno"> 209</span>  this.reader = reader;</div> |
| <div class="line"><a name="l00210"></a><span class="lineno"> 210</span>  this.expandMultiTermQuery = expandMultiTermQuery;</div> |
| <div class="line"><a name="l00211"></a><span class="lineno"> 211</span>  this.query = query;</div> |
| <div class="line"><a name="l00212"></a><span class="lineno"> 212</span>  this.field = field;</div> |
| <div class="line"><a name="l00213"></a><span class="lineno"> 213</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>  <span class="keyword">private</span> <a class="code" href="class_lucene_1_1_net_1_1_analysis_1_1_token_stream.html" title="A TokenStream enumerates the sequence of tokens, either from Fields of a Document or from query text...">TokenStream</a> InitExtractor(<a class="code" href="class_lucene_1_1_net_1_1_analysis_1_1_token_stream.html" title="A TokenStream enumerates the sequence of tokens, either from Fields of a Document or from query text...">TokenStream</a> tokenStream)</div> |
| <div class="line"><a name="l00216"></a><span class="lineno"> 216</span>  {</div> |
| <div class="line"><a name="l00217"></a><span class="lineno"> 217</span>  WeightedSpanTermExtractor qse = defaultField == null</div> |
| <div class="line"><a name="l00218"></a><span class="lineno"> 218</span>  ? <span class="keyword">new</span> WeightedSpanTermExtractor()</div> |
| <div class="line"><a name="l00219"></a><span class="lineno"> 219</span>  : new WeightedSpanTermExtractor(defaultField);</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>  qse.ExpandMultiTermQuery = expandMultiTermQuery;</div> |
| <div class="line"><a name="l00222"></a><span class="lineno"> 222</span>  qse.SetWrapIfNotCachingTokenFilter(wrapToCaching);</div> |
| <div class="line"><a name="l00223"></a><span class="lineno"> 223</span>  <span class="keywordflow">if</span> (reader == null)</div> |
| <div class="line"><a name="l00224"></a><span class="lineno"> 224</span>  {</div> |
| <div class="line"><a name="l00225"></a><span class="lineno"> 225</span>  this.fieldWeightedSpanTerms = qse.GetWeightedSpanTerms(query,</div> |
| <div class="line"><a name="l00226"></a><span class="lineno"> 226</span>  tokenStream, field);</div> |
| <div class="line"><a name="l00227"></a><span class="lineno"> 227</span>  }</div> |
| <div class="line"><a name="l00228"></a><span class="lineno"> 228</span>  <span class="keywordflow">else</span></div> |
| <div class="line"><a name="l00229"></a><span class="lineno"> 229</span>  {</div> |
| <div class="line"><a name="l00230"></a><span class="lineno"> 230</span>  this.fieldWeightedSpanTerms = qse.GetWeightedSpanTermsWithScores(query,</div> |
| <div class="line"><a name="l00231"></a><span class="lineno"> 231</span>  tokenStream, field, reader);</div> |
| <div class="line"><a name="l00232"></a><span class="lineno"> 232</span>  }</div> |
| <div class="line"><a name="l00233"></a><span class="lineno"> 233</span>  <span class="keywordflow">if</span> (qse.IsCachedTokenStream)</div> |
| <div class="line"><a name="l00234"></a><span class="lineno"> 234</span>  {</div> |
| <div class="line"><a name="l00235"></a><span class="lineno"> 235</span>  <span class="keywordflow">return</span> qse.TokenStream;</div> |
| <div class="line"><a name="l00236"></a><span class="lineno"> 236</span>  }</div> |
| <div class="line"><a name="l00237"></a><span class="lineno"> 237</span> </div> |
| <div class="line"><a name="l00238"></a><span class="lineno"> 238</span>  <span class="keywordflow">return</span> null;</div> |
| <div class="line"><a name="l00239"></a><span class="lineno"> 239</span>  }</div> |
| <div class="line"><a name="l00240"></a><span class="lineno"> 240</span> </div> |
| <div class="line"><a name="l00242"></a><span class="lineno"><a class="code" href="class_lucene_1_1_net_1_1_search_1_1_highlight_1_1_query_scorer.html#a640c5aa7f4fefa01528b893082cce592"> 242</a></span>  <span class="keyword">public</span> <span class="keywordtype">void</span> StartFragment(<a class="code" href="class_lucene_1_1_net_1_1_search_1_1_highlight_1_1_text_fragment.html" title="Low-level class used to record information about a section of a document with a score. ">TextFragment</a> newFragment)</div> |
| <div class="line"><a name="l00243"></a><span class="lineno"> 243</span>  {</div> |
| <div class="line"><a name="l00244"></a><span class="lineno"> 244</span>  foundTerms = Support.Compatibility.SetFactory.CreateHashSet<<span class="keywordtype">string</span>>();</div> |
| <div class="line"><a name="l00245"></a><span class="lineno"> 245</span>  totalScore = 0;</div> |
| <div class="line"><a name="l00246"></a><span class="lineno"> 246</span>  }</div> |
| <div class="line"><a name="l00247"></a><span class="lineno"> 247</span> </div> |
| <div class="line"><a name="l00252"></a><span class="lineno"> 252</span>  <span class="keyword">public</span> <span class="keywordtype">bool</span> IsExpandMultiTermQuery</div> |
| <div class="line"><a name="l00253"></a><span class="lineno"><a class="code" href="class_lucene_1_1_net_1_1_search_1_1_highlight_1_1_query_scorer.html#a7c222f6aba96ff08fe04cd5de6000f8e"> 253</a></span>  {</div> |
| <div class="line"><a name="l00254"></a><span class="lineno"> 254</span>  <span class="keyword">get</span> { <span class="keywordflow">return</span> expandMultiTermQuery; }</div> |
| <div class="line"><a name="l00255"></a><span class="lineno"> 255</span>  <span class="keyword">set</span> { this.expandMultiTermQuery = value; }</div> |
| <div class="line"><a name="l00256"></a><span class="lineno"> 256</span>  }</div> |
| <div class="line"><a name="l00257"></a><span class="lineno"> 257</span> </div> |
| <div class="line"><a name="l00265"></a><span class="lineno"><a class="code" href="class_lucene_1_1_net_1_1_search_1_1_highlight_1_1_query_scorer.html#af4e3020e2121089e869d6997a1884986"> 265</a></span>  <span class="keyword">public</span> <span class="keywordtype">void</span> SetWrapIfNotCachingTokenFilter(<span class="keywordtype">bool</span> wrap)</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>  this.wrapToCaching = wrap;</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>  }</div> |
| <div class="line"><a name="l00270"></a><span class="lineno"> 270</span> }</div> |
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