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<div class="title">MultiTermQueryWrapperFilter.cs</div> </div>
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<a href="_multi_term_query_wrapper_filter_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;</div>
<div class="line"><a name="l00020"></a><span class="lineno"><a class="code" href="_multi_term_query_wrapper_filter_8cs.html#a2a6914ea10bbe06764856e29e5674e66"> 20</a></span>&#160;<span class="keyword">using</span> <a class="code" href="_more_like_this_8cs.html#a2a6914ea10bbe06764856e29e5674e66">IndexReader</a> = Lucene.Net.Index.IndexReader;</div>
<div class="line"><a name="l00021"></a><span class="lineno"><a class="code" href="_multi_term_query_wrapper_filter_8cs.html#a8797eb30ce21b31829d3e3a43a20e3b9"> 21</a></span>&#160;<span class="keyword">using</span> <a class="code" href="_more_like_this_8cs.html#a8797eb30ce21b31829d3e3a43a20e3b9">Term</a> = Lucene.Net.Index.Term;</div>
<div class="line"><a name="l00022"></a><span class="lineno"><a class="code" href="_multi_term_query_wrapper_filter_8cs.html#a058de2d1c801e53325f35357f213391f"> 22</a></span>&#160;<span class="keyword">using</span> <a class="code" href="_field_cache_impl_8cs.html#a058de2d1c801e53325f35357f213391f">TermDocs</a> = Lucene.Net.Index.TermDocs;</div>
<div class="line"><a name="l00023"></a><span class="lineno"><a class="code" href="_multi_term_query_wrapper_filter_8cs.html#a9ad914d1fb876bdbb16a70f17895b145"> 23</a></span>&#160;<span class="keyword">using</span> <a class="code" href="_field_cache_impl_8cs.html#a9ad914d1fb876bdbb16a70f17895b145">TermEnum</a> = Lucene.Net.Index.TermEnum;</div>
<div class="line"><a name="l00024"></a><span class="lineno"><a class="code" href="_multi_term_query_wrapper_filter_8cs.html#a39e4630d91e4f7fc118eb51aa4d221a0"> 24</a></span>&#160;<span class="keyword">using</span> <a class="code" href="_field_cache_terms_filter_8cs.html#a39e4630d91e4f7fc118eb51aa4d221a0">OpenBitSet</a> = Lucene.Net.Util.OpenBitSet;</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;<span class="keyword">namespace </span>Lucene.Net.Search</div>
<div class="line"><a name="l00027"></a><span class="lineno"> 27</span>&#160;{</div>
<div class="line"><a name="l00028"></a><span class="lineno"> 28</span>&#160; </div>
<div class="line"><a name="l00042"></a><span class="lineno"> 42</span>&#160; [Serializable]</div>
<div class="line"><a name="l00043"></a><span class="lineno"><a class="code" href="class_lucene_1_1_net_1_1_search_1_1_multi_term_query_wrapper_filter_3_01_t_01_4.html"> 43</a></span>&#160; <span class="keyword">public</span> <span class="keyword">class </span>MultiTermQueryWrapperFilter&lt;T&gt; : <a class="code" href="class_lucene_1_1_net_1_1_search_1_1_filter.html" title="Abstract base class for restricting which documents may be returned during searching.">Filter</a></div>
<div class="line"><a name="l00044"></a><span class="lineno"> 44</span>&#160; where T : <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="l00045"></a><span class="lineno"> 45</span>&#160; {</div>
<div class="line"><a name="l00046"></a><span class="lineno"> 46</span>&#160; <span class="keyword">protected</span> <span class="keyword">internal</span> T query;</div>
<div class="line"><a name="l00047"></a><span class="lineno"> 47</span>&#160; </div>
<div class="line"><a name="l00049"></a><span class="lineno"> 49</span>&#160; <span class="keyword">protected</span> <span class="keyword">internal</span> MultiTermQueryWrapperFilter(T query)</div>
<div class="line"><a name="l00050"></a><span class="lineno"> 50</span>&#160; {</div>
<div class="line"><a name="l00051"></a><span class="lineno"> 51</span>&#160; this.query = query;</div>
<div class="line"><a name="l00052"></a><span class="lineno"> 52</span>&#160; }</div>
<div class="line"><a name="l00053"></a><span class="lineno"> 53</span>&#160; </div>
<div class="line"><a name="l00054"></a><span class="lineno"> 54</span>&#160; <span class="comment">//@Override</span></div>
<div class="line"><a name="l00055"></a><span class="lineno"><a class="code" href="class_lucene_1_1_net_1_1_search_1_1_multi_term_query_wrapper_filter_3_01_t_01_4.html#acf5ba76c860338e3fd2a2d28512979e8"> 55</a></span>&#160; <span class="keyword">public</span> <span class="keyword">override</span> System.String ToString()</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">// query.toString should be ok for the filter, too, if the query boost is 1.0f</span></div>
<div class="line"><a name="l00058"></a><span class="lineno"> 58</span>&#160; <span class="keywordflow">return</span> query.<a class="code" href="class_lucene_1_1_net_1_1_search_1_1_query.html#a5c948f4230c7d9d1acf3dc38551137d5" title="Prints a query to a string, with field assumed to be the default field and omitted. The representation used is one that is supposed to be readable by QueryParser. However, there are the following limitations: If the query was created by the parser, the printed representation may not be exactly what was parsed. For example, characters that need to be escaped will be represented without the required backslash. Some of the more complicated queries (e.g. span queries) don&#39;t have a representation that can be parsed by QueryParser. ">ToString</a>();</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="comment">//@Override</span></div>
<div class="line"><a name="l00062"></a><span class="lineno"><a class="code" href="class_lucene_1_1_net_1_1_search_1_1_multi_term_query_wrapper_filter_3_01_t_01_4.html#a2ab4767f0e8a982b97f47e601a643df9"> 62</a></span>&#160; <span class="keyword">public</span> <span class="keyword">override</span> <span class="keywordtype">bool</span> Equals(System.Object o)</div>
<div class="line"><a name="l00063"></a><span class="lineno"> 63</span>&#160; {</div>
<div class="line"><a name="l00064"></a><span class="lineno"> 64</span>&#160; <span class="keywordflow">if</span> (o == <span class="keyword">this</span>)</div>
<div class="line"><a name="l00065"></a><span class="lineno"> 65</span>&#160; <span class="keywordflow">return</span> <span class="keyword">true</span>;</div>
<div class="line"><a name="l00066"></a><span class="lineno"> 66</span>&#160; <span class="keywordflow">if</span> (o == null)</div>
<div class="line"><a name="l00067"></a><span class="lineno"> 67</span>&#160; <span class="keywordflow">return</span> <span class="keyword">false</span>;</div>
<div class="line"><a name="l00068"></a><span class="lineno"> 68</span>&#160; <span class="keywordflow">if</span> (this.GetType().Equals(o.GetType()))</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">return</span> this.query.Equals(((<a class="code" href="class_lucene_1_1_net_1_1_search_1_1_multi_term_query_wrapper_filter_3_01_t_01_4.html" title="A wrapper for MultiTermQuery, that exposes its functionality as a Filter. MultiTermQueryWrapperFilter...">MultiTermQueryWrapperFilter&lt;T&gt;</a>) o).query);</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; <span class="keywordflow">return</span> <span class="keyword">false</span>;</div>
<div class="line"><a name="l00073"></a><span class="lineno"> 73</span>&#160; }</div>
<div class="line"><a name="l00074"></a><span class="lineno"> 74</span>&#160; </div>
<div class="line"><a name="l00075"></a><span class="lineno"> 75</span>&#160; <span class="comment">//@Override</span></div>
<div class="line"><a name="l00076"></a><span class="lineno"><a class="code" href="class_lucene_1_1_net_1_1_search_1_1_multi_term_query_wrapper_filter_3_01_t_01_4.html#ac653a96cccc4fc5497435d68cd42fcc4"> 76</a></span>&#160; <span class="keyword">public</span> <span class="keyword">override</span> <span class="keywordtype">int</span> GetHashCode()</div>
<div class="line"><a name="l00077"></a><span class="lineno"> 77</span>&#160; {</div>
<div class="line"><a name="l00078"></a><span class="lineno"> 78</span>&#160; <span class="keywordflow">return</span> query.GetHashCode();</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;</div>
<div class="line"><a name="l00091"></a><span class="lineno"> 91</span>&#160; <span class="keyword">public</span> <span class="keyword">virtual</span> <span class="keywordtype">int</span> TotalNumberOfTerms</div>
<div class="line"><a name="l00092"></a><span class="lineno"><a class="code" href="class_lucene_1_1_net_1_1_search_1_1_multi_term_query_wrapper_filter_3_01_t_01_4.html#a4ab989c719195e06e06247273bec2f46"> 92</a></span>&#160; {</div>
<div class="line"><a name="l00093"></a><span class="lineno"> 93</span>&#160; <span class="keyword">get</span> { <span class="keywordflow">return</span> query.TotalNumberOfTerms; }</div>
<div class="line"><a name="l00094"></a><span class="lineno"> 94</span>&#160; }</div>
<div class="line"><a name="l00095"></a><span class="lineno"> 95</span>&#160;</div>
<div class="line"><a name="l00101"></a><span class="lineno"><a class="code" href="class_lucene_1_1_net_1_1_search_1_1_multi_term_query_wrapper_filter_3_01_t_01_4.html#a8eca53fc227cab0d2b6f1113a9d7715f"> 101</a></span>&#160; <span class="keyword">public</span> <span class="keyword">virtual</span> <span class="keywordtype">void</span> ClearTotalNumberOfTerms()</div>
<div class="line"><a name="l00102"></a><span class="lineno"> 102</span>&#160; {</div>
<div class="line"><a name="l00103"></a><span class="lineno"> 103</span>&#160; query.ClearTotalNumberOfTerms();</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;</div>
<div class="line"><a name="l00106"></a><span class="lineno"><a class="code" href="class_lucene_1_1_net_1_1_search_1_1_multi_term_query_wrapper_filter_3_01_t_01_4.html#a66444087efd0f4dfb8543d090d6a0299"> 106</a></span>&#160; <span class="keyword">public</span> <span class="keyword">override</span> <a class="code" href="class_lucene_1_1_net_1_1_search_1_1_doc_id_set.html" title="A DocIdSet contains a set of doc ids. Implementing classes must only implement Iterator to provide ac...">DocIdSet</a> GetDocIdSet(<a class="code" href="_more_like_this_8cs.html#a2a6914ea10bbe06764856e29e5674e66">IndexReader</a> reader)</div>
<div class="line"><a name="l00107"></a><span class="lineno"> 107</span>&#160; {</div>
<div class="line"><a name="l00108"></a><span class="lineno"> 108</span>&#160; <a class="code" href="_field_cache_impl_8cs.html#a9ad914d1fb876bdbb16a70f17895b145">TermEnum</a> enumerator = query.GetEnum(reader);</div>
<div class="line"><a name="l00109"></a><span class="lineno"> 109</span>&#160; <span class="keywordflow">try</span></div>
<div class="line"><a name="l00110"></a><span class="lineno"> 110</span>&#160; {</div>
<div class="line"><a name="l00111"></a><span class="lineno"> 111</span>&#160; <span class="comment">// if current term in enum is null, the enum is empty -&gt; shortcut</span></div>
<div class="line"><a name="l00112"></a><span class="lineno"> 112</span>&#160; <span class="keywordflow">if</span> (enumerator.Term == null)</div>
<div class="line"><a name="l00113"></a><span class="lineno"> 113</span>&#160; <span class="keywordflow">return</span> <a class="code" href="class_lucene_1_1_net_1_1_search_1_1_doc_id_set.html" title="A DocIdSet contains a set of doc ids. Implementing classes must only implement Iterator to provide ac...">DocIdSet</a>.<a class="code" href="class_lucene_1_1_net_1_1_search_1_1_doc_id_set.html#a0954d462a5e3b7b8d1161d48d72ba391" title="An empty DocIdSet instance for easy use, e.g. in Filters that hit no documents. ">EMPTY_DOCIDSET</a>;</div>
<div class="line"><a name="l00114"></a><span class="lineno"> 114</span>&#160; <span class="comment">// else fill into an OpenBitSet</span></div>
<div class="line"><a name="l00115"></a><span class="lineno"> 115</span>&#160; <a class="code" href="_field_cache_terms_filter_8cs.html#a39e4630d91e4f7fc118eb51aa4d221a0">OpenBitSet</a> bitSet = <span class="keyword">new</span> <a class="code" href="_field_cache_terms_filter_8cs.html#a39e4630d91e4f7fc118eb51aa4d221a0">OpenBitSet</a>(reader.MaxDoc);</div>
<div class="line"><a name="l00116"></a><span class="lineno"> 116</span>&#160; <span class="keywordtype">int</span>[] docs = <span class="keyword">new</span> <span class="keywordtype">int</span>[32];</div>
<div class="line"><a name="l00117"></a><span class="lineno"> 117</span>&#160; <span class="keywordtype">int</span>[] freqs = <span class="keyword">new</span> <span class="keywordtype">int</span>[32];</div>
<div class="line"><a name="l00118"></a><span class="lineno"> 118</span>&#160; <a class="code" href="_field_cache_impl_8cs.html#a058de2d1c801e53325f35357f213391f">TermDocs</a> termDocs = reader.TermDocs();</div>
<div class="line"><a name="l00119"></a><span class="lineno"> 119</span>&#160; <span class="keywordflow">try</span></div>
<div class="line"><a name="l00120"></a><span class="lineno"> 120</span>&#160; {</div>
<div class="line"><a name="l00121"></a><span class="lineno"> 121</span>&#160; <span class="keywordtype">int</span> termCount = 0;</div>
<div class="line"><a name="l00122"></a><span class="lineno"> 122</span>&#160; <span class="keywordflow">do</span></div>
<div class="line"><a name="l00123"></a><span class="lineno"> 123</span>&#160; {</div>
<div class="line"><a name="l00124"></a><span class="lineno"> 124</span>&#160; <a class="code" href="_more_like_this_8cs.html#a8797eb30ce21b31829d3e3a43a20e3b9">Term</a> term = enumerator.Term;</div>
<div class="line"><a name="l00125"></a><span class="lineno"> 125</span>&#160; <span class="keywordflow">if</span> (term == null)</div>
<div class="line"><a name="l00126"></a><span class="lineno"> 126</span>&#160; <span class="keywordflow">break</span>;</div>
<div class="line"><a name="l00127"></a><span class="lineno"> 127</span>&#160; termCount++;</div>
<div class="line"><a name="l00128"></a><span class="lineno"> 128</span>&#160; termDocs.Seek(term);</div>
<div class="line"><a name="l00129"></a><span class="lineno"> 129</span>&#160; <span class="keywordflow">while</span> (<span class="keyword">true</span>)</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; <span class="keywordtype">int</span> count = termDocs.Read(docs, freqs);</div>
<div class="line"><a name="l00132"></a><span class="lineno"> 132</span>&#160; <span class="keywordflow">if</span> (count != 0)</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="keywordflow">for</span> (<span class="keywordtype">int</span> i = 0; i &lt; count; i++)</div>
<div class="line"><a name="l00135"></a><span class="lineno"> 135</span>&#160; {</div>
<div class="line"><a name="l00136"></a><span class="lineno"> 136</span>&#160; bitSet.Set(docs[i]);</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="keywordflow">else</span></div>
<div class="line"><a name="l00140"></a><span class="lineno"> 140</span>&#160; {</div>
<div class="line"><a name="l00141"></a><span class="lineno"> 141</span>&#160; <span class="keywordflow">break</span>;</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"> 144</span>&#160; } <span class="keywordflow">while</span> (enumerator.Next());</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; query.IncTotalNumberOfTerms(termCount); <span class="comment">// {{Aroush-2.9}} is the use of &#39;temp&#39; as is right?</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="keywordflow">finally</span></div>
<div class="line"><a name="l00149"></a><span class="lineno"> 149</span>&#160; {</div>
<div class="line"><a name="l00150"></a><span class="lineno"> 150</span>&#160; termDocs.Close();</div>
<div class="line"><a name="l00151"></a><span class="lineno"> 151</span>&#160; }</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; <span class="keywordflow">return</span> bitSet;</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; <span class="keywordflow">finally</span></div>
<div class="line"><a name="l00156"></a><span class="lineno"> 156</span>&#160; {</div>
<div class="line"><a name="l00157"></a><span class="lineno"> 157</span>&#160; enumerator.Close();</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; }</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>
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