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| <a href="_fuzzy_query_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> System.Linq;</div> |
| <div class="line"><a name="l00021"></a><span class="lineno"> 21</span> <span class="keyword">using</span> Lucene.Net.Index;</div> |
| <div class="line"><a name="l00022"></a><span class="lineno"> 22</span> <span class="keyword">using</span> Lucene.Net.Support;</div> |
| <div class="line"><a name="l00023"></a><span class="lineno"> 23</span> <span class="keyword">using</span> Lucene.Net.Util;</div> |
| <div class="line"><a name="l00024"></a><span class="lineno"><a class="code" href="_fuzzy_query_8cs.html#a2a6914ea10bbe06764856e29e5674e66"> 24</a></span> <span class="keyword">using</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> = Lucene.Net.Index.IndexReader;</div> |
| <div class="line"><a name="l00025"></a><span class="lineno"><a class="code" href="_fuzzy_query_8cs.html#abe0c8eb128f6ce2ea282281c4fc06088"> 25</a></span> <span class="keyword">using</span> <a class="code" href="class_lucene_1_1_net_1_1_support_1_1_single.html">Single</a> = Lucene.Net.Support.Single;</div> |
| <div class="line"><a name="l00026"></a><span class="lineno"><a class="code" href="_fuzzy_query_8cs.html#a8797eb30ce21b31829d3e3a43a20e3b9"> 26</a></span> <span class="keyword">using</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> = Lucene.Net.Index.<a class="code" href="class_lucene_1_1_net_1_1_index_1_1_term.html#a8d6601bb9e6c004148076104f33d237a" title="Constructs a Term with the given field and text. Note that a null field or null text value results in...">Term</a>;</div> |
| <div class="line"><a name="l00027"></a><span class="lineno"><a class="code" href="_fuzzy_query_8cs.html#aeff40eaf34e2b78f761d305f48b95699"> 27</a></span> <span class="keyword">using</span> <a class="code" href="class_lucene_1_1_net_1_1_util_1_1_to_string_utils.html" title="Helper methods to ease implementing Object.ToString().">ToStringUtils</a> = Lucene.Net.Util.ToStringUtils;</div> |
| <div class="line"><a name="l00028"></a><span class="lineno"> 28</span> </div> |
| <div class="line"><a name="l00029"></a><span class="lineno"> 29</span> <span class="keyword">namespace </span>Lucene.Net.Search</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>  </div> |
| <div class="line"><a name="l00040"></a><span class="lineno"> 40</span>  [Serializable]</div> |
| <div class="line"><a name="l00041"></a><span class="lineno"><a class="code" href="class_lucene_1_1_net_1_1_search_1_1_fuzzy_query.html"> 41</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_fuzzy_query.html" title="Implements the fuzzy search query. The similarity measurement is based on the Levenshtein (edit dista...">FuzzyQuery</a> : <a class="code" href="class_lucene_1_1_net_1_1_search_1_1_multi_term_query.html" title="An abstract Query that matches documents containing a subset of terms provided by a FilteredTermEnum ...">MultiTermQuery</a></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>  </div> |
| <div class="line"><a name="l00044"></a><span class="lineno"><a class="code" href="class_lucene_1_1_net_1_1_search_1_1_fuzzy_query.html#aeefc987f794e5a007d4c211adf7fcb8c"> 44</a></span>  <span class="keyword">public</span> <span class="keyword">const</span> <span class="keywordtype">float</span> defaultMinSimilarity = 0.5f;</div> |
| <div class="line"><a name="l00045"></a><span class="lineno"><a class="code" href="class_lucene_1_1_net_1_1_search_1_1_fuzzy_query.html#a227ad54ca8d74fd11415d7a659804e36"> 45</a></span>  <span class="keyword">public</span> <span class="keyword">const</span> <span class="keywordtype">int</span> defaultPrefixLength = 0;</div> |
| <div class="line"><a name="l00046"></a><span class="lineno"> 46</span>  </div> |
| <div class="line"><a name="l00047"></a><span class="lineno"> 47</span>  <span class="keyword">private</span> <span class="keywordtype">float</span> minimumSimilarity;</div> |
| <div class="line"><a name="l00048"></a><span class="lineno"> 48</span>  <span class="keyword">private</span> <span class="keywordtype">int</span> prefixLength;</div> |
| <div class="line"><a name="l00049"></a><span class="lineno"> 49</span>  <span class="keyword">private</span> <span class="keywordtype">bool</span> termLongEnough = <span class="keyword">false</span>;</div> |
| <div class="line"><a name="l00050"></a><span class="lineno"> 50</span> </div> |
| <div class="line"><a name="l00052"></a><span class="lineno"><a class="code" href="class_lucene_1_1_net_1_1_search_1_1_fuzzy_query.html#a5e8c4166107398aa76f2281c6b6af939"> 52</a></span>  <span class="keyword">public</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> <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> { <span class="keyword">get</span>; <span class="keyword">protected</span> <span class="keyword">internal</span> <span class="keyword">set</span>; }</div> |
| <div class="line"><a name="l00053"></a><span class="lineno"> 53</span> </div> |
| <div class="line"><a name="l00073"></a><span class="lineno"><a class="code" href="class_lucene_1_1_net_1_1_search_1_1_fuzzy_query.html#a7fc1ca1709b1e093ad9fa2e4455ac2e2"> 73</a></span>  <span class="keyword">public</span> <a class="code" href="_query_parser_8cs.html#a18c6d715ac23fb518bad81d85dd7f3ca">FuzzyQuery</a>(<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, <span class="keywordtype">float</span> minimumSimilarity, <span class="keywordtype">int</span> prefixLength)</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>  this.<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="l00076"></a><span class="lineno"> 76</span>  </div> |
| <div class="line"><a name="l00077"></a><span class="lineno"> 77</span>  <span class="keywordflow">if</span> (minimumSimilarity >= 1.0f)</div> |
| <div class="line"><a name="l00078"></a><span class="lineno"> 78</span>  <span class="keywordflow">throw</span> <span class="keyword">new</span> System.ArgumentException(<span class="stringliteral">"minimumSimilarity >= 1"</span>);</div> |
| <div class="line"><a name="l00079"></a><span class="lineno"> 79</span>  <span class="keywordflow">else</span> <span class="keywordflow">if</span> (minimumSimilarity < 0.0f)</div> |
| <div class="line"><a name="l00080"></a><span class="lineno"> 80</span>  <span class="keywordflow">throw</span> <span class="keyword">new</span> System.ArgumentException(<span class="stringliteral">"minimumSimilarity < 0"</span>);</div> |
| <div class="line"><a name="l00081"></a><span class="lineno"> 81</span>  <span class="keywordflow">if</span> (prefixLength < 0)</div> |
| <div class="line"><a name="l00082"></a><span class="lineno"> 82</span>  <span class="keywordflow">throw</span> <span class="keyword">new</span> System.ArgumentException(<span class="stringliteral">"prefixLength < 0"</span>);</div> |
| <div class="line"><a name="l00083"></a><span class="lineno"> 83</span>  </div> |
| <div class="line"><a name="l00084"></a><span class="lineno"> 84</span>  <span class="keywordflow">if</span> (term.<a class="code" href="class_lucene_1_1_net_1_1_index_1_1_term.html#afe11c449ea7db39725c494b2c2574847" title="Returns the text of this term. In the case of words, this is simply the text of the word...">Text</a>.Length > 1.0f / (1.0f - minimumSimilarity))</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>  this.termLongEnough = <span class="keyword">true</span>;</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>  </div> |
| <div class="line"><a name="l00089"></a><span class="lineno"> 89</span>  this.minimumSimilarity = minimumSimilarity;</div> |
| <div class="line"><a name="l00090"></a><span class="lineno"> 90</span>  this.prefixLength = prefixLength;</div> |
| <div class="line"><a name="l00091"></a><span class="lineno"> 91</span>  internalRewriteMethod = SCORING_BOOLEAN_QUERY_REWRITE;</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> </div> |
| <div class="line"><a name="l00095"></a><span class="lineno"><a class="code" href="class_lucene_1_1_net_1_1_search_1_1_fuzzy_query.html#a4334307576f6effb55012593a5bb1740"> 95</a></span>  <span class="keyword">public</span> <a class="code" href="_query_parser_8cs.html#a18c6d715ac23fb518bad81d85dd7f3ca">FuzzyQuery</a>(<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, <span class="keywordtype">float</span> minimumSimilarity):this(term, minimumSimilarity, defaultPrefixLength)</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> </div> |
| <div class="line"><a name="l00100"></a><span class="lineno"><a class="code" href="class_lucene_1_1_net_1_1_search_1_1_fuzzy_query.html#adf76095b77549dad445165c974855262"> 100</a></span>  <span class="keyword">public</span> <a class="code" href="_query_parser_8cs.html#a18c6d715ac23fb518bad81d85dd7f3ca">FuzzyQuery</a>(<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):this(term, defaultMinSimilarity, defaultPrefixLength)</div> |
| <div class="line"><a name="l00101"></a><span class="lineno"> 101</span>  {</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="l00106"></a><span class="lineno"> 106</span>  <span class="keyword">public</span> <span class="keyword">virtual</span> <span class="keywordtype">float</span> MinSimilarity</div> |
| <div class="line"><a name="l00107"></a><span class="lineno"><a class="code" href="class_lucene_1_1_net_1_1_search_1_1_fuzzy_query.html#a74f9953ccf932ad9f6059fffb7d3c167"> 107</a></span>  {</div> |
| <div class="line"><a name="l00108"></a><span class="lineno"> 108</span>  <span class="keyword">get</span> { <span class="keywordflow">return</span> minimumSimilarity; }</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> </div> |
| <div class="line"><a name="l00115"></a><span class="lineno"> 115</span>  <span class="keyword">public</span> <span class="keyword">virtual</span> <span class="keywordtype">int</span> PrefixLength</div> |
| <div class="line"><a name="l00116"></a><span class="lineno"><a class="code" href="class_lucene_1_1_net_1_1_search_1_1_fuzzy_query.html#a0cd3c1fc28226a0fda617a420ffa6177"> 116</a></span>  {</div> |
| <div class="line"><a name="l00117"></a><span class="lineno"> 117</span>  <span class="keyword">get</span> { <span class="keywordflow">return</span> prefixLength; }</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> </div> |
| <div class="line"><a name="l00120"></a><span class="lineno"> 120</span>  <span class="keyword">protected</span> <span class="keyword">internal</span> <span class="keyword">override</span> <a class="code" href="class_lucene_1_1_net_1_1_search_1_1_filtered_term_enum.html" title="Abstract class for enumerating a subset of all terms. Term enumerations are always ordered by Term...">FilteredTermEnum</a> GetEnum(<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="l00121"></a><span class="lineno"> 121</span>  {</div> |
| <div class="line"><a name="l00122"></a><span class="lineno"> 122</span>  <span class="keywordflow">return</span> <span class="keyword">new</span> <a class="code" href="class_lucene_1_1_net_1_1_search_1_1_fuzzy_term_enum.html" title="Subclass of FilteredTermEnum for enumerating all terms that are similiar to the specified filter term...">FuzzyTermEnum</a>(reader, <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>, minimumSimilarity, prefixLength);</div> |
| <div class="line"><a name="l00123"></a><span class="lineno"> 123</span>  }</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="keyword">public</span> <span class="keyword">override</span> RewriteMethod RewriteMethod</div> |
| <div class="line"><a name="l00126"></a><span class="lineno"><a class="code" href="class_lucene_1_1_net_1_1_search_1_1_fuzzy_query.html#a2152779425e2fa1fd7f814ce4b61286c"> 126</a></span>  {</div> |
| <div class="line"><a name="l00127"></a><span class="lineno"> 127</span>  <span class="keyword">set</span> { <span class="keywordflow">throw</span> <span class="keyword">new</span> System.NotSupportedException(<span class="stringliteral">"FuzzyQuery cannot change rewrite method"</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"> 129</span> </div> |
| <div class="line"><a name="l00130"></a><span class="lineno"><a class="code" href="class_lucene_1_1_net_1_1_search_1_1_fuzzy_query.html#a5972d0a87625177086ae68b83375d104"> 130</a></span>  <span class="keyword">public</span> <span class="keyword">override</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> Rewrite(<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="l00131"></a><span class="lineno"> 131</span>  {</div> |
| <div class="line"><a name="l00132"></a><span class="lineno"> 132</span>  <span class="keywordflow">if</span> (!termLongEnough)</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>  <span class="comment">// can only match if it's exact</span></div> |
| <div class="line"><a name="l00135"></a><span class="lineno"> 135</span>  <span class="keywordflow">return</span> <span class="keyword">new</span> <a class="code" href="_more_like_this_8cs.html#a13f0b68c1e7c8f509c3a0be1441df5d9">TermQuery</a>(<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>);</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> </div> |
| <div class="line"><a name="l00138"></a><span class="lineno"> 138</span>  <span class="keywordtype">int</span> maxSize = <a class="code" href="class_lucene_1_1_net_1_1_search_1_1_boolean_query.html" title="A Query that matches documents matching boolean combinations of other queries, e.g. TermQuerys, PhraseQuerys or other BooleanQuerys. ">BooleanQuery</a>.<a class="code" href="class_lucene_1_1_net_1_1_search_1_1_boolean_query.html#aed4cadbd29766e321ff35a244a339a5c" title="Gets or sets the maximum number of clauses permitted, 1024 by default. Attempts to add more than the ...">MaxClauseCount</a>;</div> |
| <div class="line"><a name="l00139"></a><span class="lineno"> 139</span> </div> |
| <div class="line"><a name="l00140"></a><span class="lineno"> 140</span>  <span class="comment">// TODO: Java uses a PriorityQueue. Using Linq, we can emulate it, </span></div> |
| <div class="line"><a name="l00141"></a><span class="lineno"> 141</span>  <span class="comment">// however it's considerable slower than the java counterpart.</span></div> |
| <div class="line"><a name="l00142"></a><span class="lineno"> 142</span>  <span class="comment">// this should be a temporary thing, fixed before release</span></div> |
| <div class="line"><a name="l00143"></a><span class="lineno"> 143</span>  SortedList<ScoreTerm, ScoreTerm> stQueue = <span class="keyword">new</span> SortedList<ScoreTerm, ScoreTerm>();</div> |
| <div class="line"><a name="l00144"></a><span class="lineno"> 144</span>  <a class="code" href="class_lucene_1_1_net_1_1_search_1_1_filtered_term_enum.html" title="Abstract class for enumerating a subset of all terms. Term enumerations are always ordered by Term...">FilteredTermEnum</a> enumerator = GetEnum(reader);</div> |
| <div class="line"><a name="l00145"></a><span class="lineno"> 145</span>  </div> |
| <div class="line"><a name="l00146"></a><span class="lineno"> 146</span>  <span class="keywordflow">try</span></div> |
| <div class="line"><a name="l00147"></a><span class="lineno"> 147</span>  {</div> |
| <div class="line"><a name="l00148"></a><span class="lineno"> 148</span>  ScoreTerm st = <span class="keyword">new</span> ScoreTerm();</div> |
| <div class="line"><a name="l00149"></a><span class="lineno"> 149</span>  <span class="keywordflow">do</span> </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>  <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> t = enumerator.<a class="code" href="class_lucene_1_1_net_1_1_index_1_1_term.html#a8d6601bb9e6c004148076104f33d237a" title="Constructs a Term with the given field and text. Note that a null field or null text value results in...">Term</a>;</div> |
| <div class="line"><a name="l00152"></a><span class="lineno"> 152</span>  <span class="keywordflow">if</span> (t == null) <span class="keywordflow">break</span>;</div> |
| <div class="line"><a name="l00153"></a><span class="lineno"> 153</span>  <span class="keywordtype">float</span> score = enumerator.Difference();</div> |
| <div class="line"><a name="l00154"></a><span class="lineno"> 154</span>  <span class="comment">//ignore uncompetetive hits</span></div> |
| <div class="line"><a name="l00155"></a><span class="lineno"> 155</span>  <span class="keywordflow">if</span> (stQueue.Count >= maxSize && score <= stQueue.Keys.First().score)</div> |
| <div class="line"><a name="l00156"></a><span class="lineno"> 156</span>  <span class="keywordflow">continue</span>;</div> |
| <div class="line"><a name="l00157"></a><span class="lineno"> 157</span>  <span class="comment">// add new entry in PQ</span></div> |
| <div class="line"><a name="l00158"></a><span class="lineno"> 158</span>  st.term = t;</div> |
| <div class="line"><a name="l00159"></a><span class="lineno"> 159</span>  st.score = score;</div> |
| <div class="line"><a name="l00160"></a><span class="lineno"> 160</span>  stQueue.Add(st, st);</div> |
| <div class="line"><a name="l00161"></a><span class="lineno"> 161</span>  <span class="comment">// possibly drop entries from queue</span></div> |
| <div class="line"><a name="l00162"></a><span class="lineno"> 162</span>  <span class="keywordflow">if</span> (stQueue.Count > maxSize)</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>  st = stQueue.Keys.First();</div> |
| <div class="line"><a name="l00165"></a><span class="lineno"> 165</span>  stQueue.Remove(st);</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="keywordflow">else</span></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>  st = <span class="keyword">new</span> ScoreTerm();</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>  <span class="keywordflow">while</span> (enumerator.Next());</div> |
| <div class="line"><a name="l00173"></a><span class="lineno"> 173</span>  }</div> |
| <div class="line"><a name="l00174"></a><span class="lineno"> 174</span>  <span class="keywordflow">finally</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>  enumerator.Close();</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="l00179"></a><span class="lineno"> 179</span>  <a class="code" href="class_lucene_1_1_net_1_1_search_1_1_boolean_query.html" title="A Query that matches documents matching boolean combinations of other queries, e.g. TermQuerys, PhraseQuerys or other BooleanQuerys. ">BooleanQuery</a> query = <span class="keyword">new</span> <a class="code" href="_more_like_this_8cs.html#ae2b9948961aeea34f9c4e4955536f433">BooleanQuery</a>(<span class="keyword">true</span>);</div> |
| <div class="line"><a name="l00180"></a><span class="lineno"> 180</span>  <span class="keywordflow">foreach</span>(ScoreTerm st <span class="keywordflow">in</span> stQueue.Keys)</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>  <a class="code" href="class_lucene_1_1_net_1_1_search_1_1_term_query.html" title="A Query that matches documents containing a term. This may be combined with other terms with a Boolea...">TermQuery</a> tq = <span class="keyword">new</span> <a class="code" href="_more_like_this_8cs.html#a13f0b68c1e7c8f509c3a0be1441df5d9">TermQuery</a>(st.term); <span class="comment">// found a match</span></div> |
| <div class="line"><a name="l00183"></a><span class="lineno"> 183</span>  tq.<a class="code" href="class_lucene_1_1_net_1_1_search_1_1_query.html#a2a58b600e864bed65cc21815fffa0218" title="Gets or sets the boost for this query clause to b. Documents matching this clause will (in addition t...">Boost</a> = Boost * st.score; <span class="comment">// set the boost</span></div> |
| <div class="line"><a name="l00184"></a><span class="lineno"> 184</span>  query.Add(tq, <a class="code" href="namespace_lucene_1_1_net_1_1_search.html#a99a7442e50a0ff52bf00ddb319eb9d34">Occur</a>.SHOULD); <span class="comment">// add to query</span></div> |
| <div class="line"><a name="l00185"></a><span class="lineno"> 185</span>  }</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">return</span> query;</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>  </div> |
| <div class="line"><a name="l00190"></a><span class="lineno"><a class="code" href="class_lucene_1_1_net_1_1_search_1_1_fuzzy_query.html#ac9398ddb645bccfaa96e6f848e0bf029"> 190</a></span>  <span class="keyword">public</span> <span class="keyword">override</span> System.String ToString(System.String field)</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>  System.Text.StringBuilder buffer = <span class="keyword">new</span> System.Text.StringBuilder();</div> |
| <div class="line"><a name="l00193"></a><span class="lineno"> 193</span>  <span class="keywordflow">if</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>.<a class="code" href="class_lucene_1_1_net_1_1_index_1_1_term.html#a2ecfa7c0860798920d089654f34aa222" title="Returns the field of this term, an interned string. The field indicates the part of a document which ...">Field</a>.Equals(field))</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>  buffer.Append(<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>.<a class="code" href="class_lucene_1_1_net_1_1_index_1_1_term.html#a2ecfa7c0860798920d089654f34aa222" title="Returns the field of this term, an interned string. The field indicates the part of a document which ...">Field</a>);</div> |
| <div class="line"><a name="l00196"></a><span class="lineno"> 196</span>  buffer.Append(<span class="stringliteral">":"</span>);</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>  buffer.Append(<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>.<a class="code" href="class_lucene_1_1_net_1_1_index_1_1_term.html#afe11c449ea7db39725c494b2c2574847" title="Returns the text of this term. In the case of words, this is simply the text of the word...">Text</a>);</div> |
| <div class="line"><a name="l00199"></a><span class="lineno"> 199</span>  buffer.Append(<span class="charliteral">'~'</span>);</div> |
| <div class="line"><a name="l00200"></a><span class="lineno"> 200</span>  buffer.Append(<a class="code" href="class_lucene_1_1_net_1_1_support_1_1_single.html">Single</a>.<a class="code" href="class_lucene_1_1_net_1_1_support_1_1_single.html#a9f99f554e6dd861e3c66ad5c77d18a54">ToString</a>(minimumSimilarity));</div> |
| <div class="line"><a name="l00201"></a><span class="lineno"> 201</span>  buffer.Append(<a class="code" href="class_lucene_1_1_net_1_1_util_1_1_to_string_utils.html" title="Helper methods to ease implementing Object.ToString().">ToStringUtils</a>.<a class="code" href="class_lucene_1_1_net_1_1_util_1_1_to_string_utils.html#ace4214f9df4c839e9d90c9ebf1840405" title="for printing boost only if not 1.0 ">Boost</a>(Boost));</div> |
| <div class="line"><a name="l00202"></a><span class="lineno"> 202</span>  <span class="keywordflow">return</span> buffer.ToString();</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>  </div> |
| <div class="line"><a name="l00205"></a><span class="lineno"> 205</span>  <span class="keyword">protected</span> <span class="keyword">internal</span> <span class="keyword">class </span>ScoreTerm : IComparable<ScoreTerm></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">public</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> term;</div> |
| <div class="line"><a name="l00208"></a><span class="lineno"> 208</span>  <span class="keyword">public</span> <span class="keywordtype">float</span> score;</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>  <span class="keyword">public</span> <span class="keywordtype">int</span> CompareTo(ScoreTerm other)</div> |
| <div class="line"><a name="l00211"></a><span class="lineno"> 211</span>  {</div> |
| <div class="line"><a name="l00212"></a><span class="lineno"> 212</span>  <span class="keywordflow">if</span> (Comparer<float>.Default.Compare(<span class="keyword">this</span>.score, other.score) == 0)</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>  <span class="keywordflow">return</span> other.term.CompareTo(this.term);</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="keywordflow">else</span></div> |
| <div class="line"><a name="l00217"></a><span class="lineno"> 217</span>  {</div> |
| <div class="line"><a name="l00218"></a><span class="lineno"> 218</span>  <span class="keywordflow">return</span> Comparer<float>.Default.Compare(this.score, other.score);</div> |
| <div class="line"><a name="l00219"></a><span class="lineno"> 219</span>  }</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>  </div> |
| <div class="line"><a name="l00223"></a><span class="lineno"><a class="code" href="class_lucene_1_1_net_1_1_search_1_1_fuzzy_query.html#ae48139cc0383492784b4115f5bf63852"> 223</a></span>  <span class="keyword">public</span> <span class="keyword">override</span> <span class="keywordtype">int</span> GetHashCode()</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>  <span class="keywordtype">int</span> prime = 31;</div> |
| <div class="line"><a name="l00226"></a><span class="lineno"> 226</span>  <span class="keywordtype">int</span> result = base.GetHashCode();</div> |
| <div class="line"><a name="l00227"></a><span class="lineno"> 227</span>  result = prime * result + BitConverter.ToInt32(BitConverter.GetBytes(minimumSimilarity), 0);</div> |
| <div class="line"><a name="l00228"></a><span class="lineno"> 228</span>  result = prime * result + prefixLength;</div> |
| <div class="line"><a name="l00229"></a><span class="lineno"> 229</span>  result = prime * result + ((<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> == null)?0:Term.GetHashCode());</div> |
| <div class="line"><a name="l00230"></a><span class="lineno"> 230</span>  <span class="keywordflow">return</span> result;</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>  </div> |
| <div class="line"><a name="l00233"></a><span class="lineno"><a class="code" href="class_lucene_1_1_net_1_1_search_1_1_fuzzy_query.html#a29e2062de4771fffa9d28d146685a787"> 233</a></span>  <span class="keyword">public</span> <span class="keyword">override</span> <span class="keywordtype">bool</span> Equals(System.Object obj)</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">if</span> (<span class="keyword">this</span> == obj)</div> |
| <div class="line"><a name="l00236"></a><span class="lineno"> 236</span>  <span class="keywordflow">return</span> <span class="keyword">true</span>;</div> |
| <div class="line"><a name="l00237"></a><span class="lineno"> 237</span>  <span class="keywordflow">if</span> (!base.Equals(obj))</div> |
| <div class="line"><a name="l00238"></a><span class="lineno"> 238</span>  <span class="keywordflow">return</span> <span class="keyword">false</span>;</div> |
| <div class="line"><a name="l00239"></a><span class="lineno"> 239</span>  <span class="keywordflow">if</span> (GetType() != obj.GetType())</div> |
| <div class="line"><a name="l00240"></a><span class="lineno"> 240</span>  <span class="keywordflow">return</span> <span class="keyword">false</span>;</div> |
| <div class="line"><a name="l00241"></a><span class="lineno"> 241</span>  <a class="code" href="class_lucene_1_1_net_1_1_search_1_1_fuzzy_query.html" title="Implements the fuzzy search query. The similarity measurement is based on the Levenshtein (edit dista...">FuzzyQuery</a> other = (<a class="code" href="_query_parser_8cs.html#a18c6d715ac23fb518bad81d85dd7f3ca">FuzzyQuery</a>) obj;</div> |
| <div class="line"><a name="l00242"></a><span class="lineno"> 242</span>  <span class="keywordflow">if</span> (BitConverter.ToInt32(BitConverter.GetBytes(minimumSimilarity), 0) != BitConverter.ToInt32(BitConverter.GetBytes(other.minimumSimilarity), 0))</div> |
| <div class="line"><a name="l00243"></a><span class="lineno"> 243</span>  <span class="keywordflow">return</span> <span class="keyword">false</span>;</div> |
| <div class="line"><a name="l00244"></a><span class="lineno"> 244</span>  <span class="keywordflow">if</span> (prefixLength != other.prefixLength)</div> |
| <div class="line"><a name="l00245"></a><span class="lineno"> 245</span>  <span class="keywordflow">return</span> <span class="keyword">false</span>;</div> |
| <div class="line"><a name="l00246"></a><span class="lineno"> 246</span>  <span class="keywordflow">if</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> == null)</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>  <span class="keywordflow">if</span> (other.<a class="code" href="class_lucene_1_1_net_1_1_search_1_1_fuzzy_query.html#a5e8c4166107398aa76f2281c6b6af939" title="Returns the pattern term.">Term</a> != null)</div> |
| <div class="line"><a name="l00249"></a><span class="lineno"> 249</span>  <span class="keywordflow">return</span> <span class="keyword">false</span>;</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="keywordflow">else</span> <span class="keywordflow">if</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>.<a class="code" href="class_lucene_1_1_net_1_1_index_1_1_term.html#a576e0c713a41a45f056d1b98bf0ae3e7">Equals</a>(other.<a class="code" href="class_lucene_1_1_net_1_1_search_1_1_fuzzy_query.html#a5e8c4166107398aa76f2281c6b6af939" title="Returns the pattern term.">Term</a>))</div> |
| <div class="line"><a name="l00252"></a><span class="lineno"> 252</span>  <span class="keywordflow">return</span> <span class="keyword">false</span>;</div> |
| <div class="line"><a name="l00253"></a><span class="lineno"> 253</span>  <span class="keywordflow">return</span> <span class="keyword">true</span>;</div> |
| <div class="line"><a name="l00254"></a><span class="lineno"> 254</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> }</div> |
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