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| <div class="title">PersianAnalyzer.cs</div> </div> |
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| <div class="contents"> |
| <a href="_persian_analyzer_8cs.html">Go to the documentation of this file.</a><div class="fragment"><div class="line"><a name="l00001"></a><span class="lineno"> 1</span> <span class="comment">/*</span></div> |
| <div class="line"><a name="l00002"></a><span class="lineno"> 2</span> <span class="comment"> *</span></div> |
| <div class="line"><a name="l00003"></a><span class="lineno"> 3</span> <span class="comment"> * Licensed to the Apache Software Foundation (ASF) under one</span></div> |
| <div class="line"><a name="l00004"></a><span class="lineno"> 4</span> <span class="comment"> * or more contributor license agreements. See the NOTICE file</span></div> |
| <div class="line"><a name="l00005"></a><span class="lineno"> 5</span> <span class="comment"> * distributed with this work for additional information</span></div> |
| <div class="line"><a name="l00006"></a><span class="lineno"> 6</span> <span class="comment"> * regarding copyright ownership. The ASF licenses this file</span></div> |
| <div class="line"><a name="l00007"></a><span class="lineno"> 7</span> <span class="comment"> * to you under the Apache License, Version 2.0 (the</span></div> |
| <div class="line"><a name="l00008"></a><span class="lineno"> 8</span> <span class="comment"> * "License"); you may not use this file except in compliance</span></div> |
| <div class="line"><a name="l00009"></a><span class="lineno"> 9</span> <span class="comment"> * with the License. You may obtain a copy of the License at</span></div> |
| <div class="line"><a name="l00010"></a><span class="lineno"> 10</span> <span class="comment"> *</span></div> |
| <div class="line"><a name="l00011"></a><span class="lineno"> 11</span> <span class="comment"> * http://www.apache.org/licenses/LICENSE-2.0</span></div> |
| <div class="line"><a name="l00012"></a><span class="lineno"> 12</span> <span class="comment"> *</span></div> |
| <div class="line"><a name="l00013"></a><span class="lineno"> 13</span> <span class="comment"> * Unless required by applicable law or agreed to in writing,</span></div> |
| <div class="line"><a name="l00014"></a><span class="lineno"> 14</span> <span class="comment"> * software distributed under the License is distributed on an</span></div> |
| <div class="line"><a name="l00015"></a><span class="lineno"> 15</span> <span class="comment"> * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY</span></div> |
| <div class="line"><a name="l00016"></a><span class="lineno"> 16</span> <span class="comment"> * KIND, either express or implied. See the License for the</span></div> |
| <div class="line"><a name="l00017"></a><span class="lineno"> 17</span> <span class="comment"> * specific language governing permissions and limitations</span></div> |
| <div class="line"><a name="l00018"></a><span class="lineno"> 18</span> <span class="comment"> * under the License.</span></div> |
| <div class="line"><a name="l00019"></a><span class="lineno"> 19</span> <span class="comment"> *</span></div> |
| <div class="line"><a name="l00020"></a><span class="lineno"> 20</span> <span class="comment">*/</span></div> |
| <div class="line"><a name="l00021"></a><span class="lineno"> 21</span> </div> |
| <div class="line"><a name="l00022"></a><span class="lineno"> 22</span> <span class="keyword">using</span> System;</div> |
| <div class="line"><a name="l00023"></a><span class="lineno"> 23</span> <span class="keyword">using</span> System.Collections.Generic;</div> |
| <div class="line"><a name="l00024"></a><span class="lineno"> 24</span> <span class="keyword">using</span> System.IO;</div> |
| <div class="line"><a name="l00025"></a><span class="lineno"> 25</span> <span class="keyword">using</span> System.Linq;</div> |
| <div class="line"><a name="l00026"></a><span class="lineno"> 26</span> <span class="keyword">using</span> Lucene.Net.Analysis.AR;</div> |
| <div class="line"><a name="l00027"></a><span class="lineno"><a class="code" href="_persian_analyzer_8cs.html#a63c914dcb7d19365ff0f7c6ea7ef77c4"> 27</a></span> <span class="keyword">using</span> <a class="code" href="_arabic_analyzer_8cs.html#a63c914dcb7d19365ff0f7c6ea7ef77c4">Version</a> = Lucene.Net.Util.Version;</div> |
| <div class="line"><a name="l00028"></a><span class="lineno"> 28</span> </div> |
| <div class="line"><a name="l00029"></a><span class="lineno"><a class="code" href="namespace_lucene_1_1_net_1_1_analysis_1_1_fa.html"> 29</a></span> <span class="keyword">namespace </span>Lucene.Net.Analysis.Fa</div> |
| <div class="line"><a name="l00030"></a><span class="lineno"> 30</span> {</div> |
| <div class="line"><a name="l00031"></a><span class="lineno"> 31</span>  <span class="comment">/*</span></div> |
| <div class="line"><a name="l00032"></a><span class="lineno"> 32</span> <span class="comment"> * {@link Analyzer} for Persian.</span></div> |
| <div class="line"><a name="l00033"></a><span class="lineno"> 33</span> <span class="comment"> * <p></span></div> |
| <div class="line"><a name="l00034"></a><span class="lineno"> 34</span> <span class="comment"> * This Analyzer uses {@link ArabicLetterTokenizer} which implies tokenizing around</span></div> |
| <div class="line"><a name="l00035"></a><span class="lineno"> 35</span> <span class="comment"> * zero-width non-joiner in addition to whitespace. Some persian-specific variant forms (such as farsi</span></div> |
| <div class="line"><a name="l00036"></a><span class="lineno"> 36</span> <span class="comment"> * yeh and keheh) are standardized. "Stemming" is accomplished via stopwords.</span></div> |
| <div class="line"><a name="l00037"></a><span class="lineno"> 37</span> <span class="comment"> * </p></span></div> |
| <div class="line"><a name="l00038"></a><span class="lineno"> 38</span> <span class="comment"> */</span></div> |
| <div class="line"><a name="l00039"></a><span class="lineno"><a class="code" href="class_lucene_1_1_net_1_1_analysis_1_1_fa_1_1_persian_analyzer.html"> 39</a></span>  <span class="keyword">public</span> sealed <span class="keyword">class </span><a class="code" href="class_lucene_1_1_net_1_1_analysis_1_1_fa_1_1_persian_analyzer.html">PersianAnalyzer</a> : <a class="code" href="class_lucene_1_1_net_1_1_analysis_1_1_analyzer.html" title="An Analyzer builds TokenStreams, which analyze text. It thus represents a policy for extracting index...">Analyzer</a></div> |
| <div class="line"><a name="l00040"></a><span class="lineno"> 40</span>  {</div> |
| <div class="line"><a name="l00041"></a><span class="lineno"> 41</span> </div> |
| <div class="line"><a name="l00042"></a><span class="lineno"> 42</span>  <span class="comment">/*</span></div> |
| <div class="line"><a name="l00043"></a><span class="lineno"> 43</span> <span class="comment"> * File containing default Persian stopwords.</span></div> |
| <div class="line"><a name="l00044"></a><span class="lineno"> 44</span> <span class="comment"> * </span></div> |
| <div class="line"><a name="l00045"></a><span class="lineno"> 45</span> <span class="comment"> * Default stopword list is from</span></div> |
| <div class="line"><a name="l00046"></a><span class="lineno"> 46</span> <span class="comment"> * http://members.unine.ch/jacques.savoy/clef/index.html The stopword list is</span></div> |
| <div class="line"><a name="l00047"></a><span class="lineno"> 47</span> <span class="comment"> * BSD-Licensed.</span></div> |
| <div class="line"><a name="l00048"></a><span class="lineno"> 48</span> <span class="comment"> * </span></div> |
| <div class="line"><a name="l00049"></a><span class="lineno"> 49</span> <span class="comment"> */</span></div> |
| <div class="line"><a name="l00050"></a><span class="lineno"><a class="code" href="class_lucene_1_1_net_1_1_analysis_1_1_fa_1_1_persian_analyzer.html#aa229b71598ea6bce19d34e51b2891e51"> 50</a></span>  <span class="keyword">public</span> readonly <span class="keyword">static</span> String DEFAULT_STOPWORD_FILE = <span class="stringliteral">"stopwords.txt"</span>;</div> |
| <div class="line"><a name="l00051"></a><span class="lineno"> 51</span> </div> |
| <div class="line"><a name="l00052"></a><span class="lineno"> 52</span>  <span class="comment">/*</span></div> |
| <div class="line"><a name="l00053"></a><span class="lineno"> 53</span> <span class="comment"> * Contains the stopwords used with the StopFilter.</span></div> |
| <div class="line"><a name="l00054"></a><span class="lineno"> 54</span> <span class="comment"> */</span></div> |
| <div class="line"><a name="l00055"></a><span class="lineno"> 55</span>  <span class="keyword">private</span> readonly ISet<string> stoptable;</div> |
| <div class="line"><a name="l00056"></a><span class="lineno"> 56</span> </div> |
| <div class="line"><a name="l00057"></a><span class="lineno"> 57</span>  <span class="comment">/*</span></div> |
| <div class="line"><a name="l00058"></a><span class="lineno"> 58</span> <span class="comment"> * The comment character in the stopwords file. All lines prefixed with this</span></div> |
| <div class="line"><a name="l00059"></a><span class="lineno"> 59</span> <span class="comment"> * will be ignored</span></div> |
| <div class="line"><a name="l00060"></a><span class="lineno"> 60</span> <span class="comment"> */</span></div> |
| <div class="line"><a name="l00061"></a><span class="lineno"><a class="code" href="class_lucene_1_1_net_1_1_analysis_1_1_fa_1_1_persian_analyzer.html#a7c954326b4bae951a4e2a462424835e9"> 61</a></span>  <span class="keyword">public</span> <span class="keyword">static</span> readonly String STOPWORDS_COMMENT = <span class="stringliteral">"#"</span>;</div> |
| <div class="line"><a name="l00062"></a><span class="lineno"> 62</span> </div> |
| <div class="line"><a name="l00063"></a><span class="lineno"> 63</span>  <span class="comment">/*</span></div> |
| <div class="line"><a name="l00064"></a><span class="lineno"> 64</span> <span class="comment"> * Returns an unmodifiable instance of the default stop-words set.</span></div> |
| <div class="line"><a name="l00065"></a><span class="lineno"> 65</span> <span class="comment"> * @return an unmodifiable instance of the default stop-words set.</span></div> |
| <div class="line"><a name="l00066"></a><span class="lineno"> 66</span> <span class="comment"> */</span></div> |
| <div class="line"><a name="l00067"></a><span class="lineno"><a class="code" href="class_lucene_1_1_net_1_1_analysis_1_1_fa_1_1_persian_analyzer.html#a408d54006900bcfb256d051fb38d75b0"> 67</a></span>  <span class="keyword">public</span> <span class="keyword">static</span> ISet<string> getDefaultStopSet()</div> |
| <div class="line"><a name="l00068"></a><span class="lineno"> 68</span>  {</div> |
| <div class="line"><a name="l00069"></a><span class="lineno"> 69</span>  <span class="keywordflow">return</span> DefaultSetHolder.DEFAULT_STOP_SET;</div> |
| <div class="line"><a name="l00070"></a><span class="lineno"> 70</span>  }</div> |
| <div class="line"><a name="l00071"></a><span class="lineno"> 71</span> </div> |
| <div class="line"><a name="l00072"></a><span class="lineno"> 72</span>  <span class="comment">/*</span></div> |
| <div class="line"><a name="l00073"></a><span class="lineno"> 73</span> <span class="comment"> * Atomically loads the DEFAULT_STOP_SET in a lazy fashion once the outer class </span></div> |
| <div class="line"><a name="l00074"></a><span class="lineno"> 74</span> <span class="comment"> * accesses the static final set the first time.;</span></div> |
| <div class="line"><a name="l00075"></a><span class="lineno"> 75</span> <span class="comment"> */</span></div> |
| <div class="line"><a name="l00076"></a><span class="lineno"> 76</span>  <span class="keyword">private</span> <span class="keyword">static</span> <span class="keyword">class </span>DefaultSetHolder</div> |
| <div class="line"><a name="l00077"></a><span class="lineno"> 77</span>  {</div> |
| <div class="line"><a name="l00078"></a><span class="lineno"> 78</span>  <span class="keyword">internal</span> <span class="keyword">static</span> readonly ISet<string> DEFAULT_STOP_SET;</div> |
| <div class="line"><a name="l00079"></a><span class="lineno"> 79</span> </div> |
| <div class="line"><a name="l00080"></a><span class="lineno"> 80</span>  <span class="keyword">static</span> DefaultSetHolder()</div> |
| <div class="line"><a name="l00081"></a><span class="lineno"> 81</span>  {</div> |
| <div class="line"><a name="l00082"></a><span class="lineno"> 82</span>  <span class="keywordflow">try</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>  DEFAULT_STOP_SET = LoadDefaultStopWordSet();</div> |
| <div class="line"><a name="l00085"></a><span class="lineno"> 85</span>  }</div> |
| <div class="line"><a name="l00086"></a><span class="lineno"> 86</span>  <span class="keywordflow">catch</span> (IOException ex)</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>  <span class="comment">// default set should always be present as it is part of the</span></div> |
| <div class="line"><a name="l00089"></a><span class="lineno"> 89</span>  <span class="comment">// distribution (JAR)</span></div> |
| <div class="line"><a name="l00090"></a><span class="lineno"> 90</span>  <span class="keywordflow">throw</span> <span class="keyword">new</span> Exception(<span class="stringliteral">"Unable to load default stopword set"</span>);</div> |
| <div class="line"><a name="l00091"></a><span class="lineno"> 91</span>  }</div> |
| <div class="line"><a name="l00092"></a><span class="lineno"> 92</span>  }</div> |
| <div class="line"><a name="l00093"></a><span class="lineno"> 93</span> </div> |
| <div class="line"><a name="l00094"></a><span class="lineno"> 94</span>  <span class="keyword">static</span> ISet<String> LoadDefaultStopWordSet()</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>  var stream = System.Reflection.Assembly.GetAssembly(typeof(PersianAnalyzer)).GetManifestResourceStream(<span class="stringliteral">"Lucene.Net.Analyzers.Fa."</span> + DEFAULT_STOPWORD_FILE);</div> |
| <div class="line"><a name="l00098"></a><span class="lineno"> 98</span>  <span class="keywordflow">try</span></div> |
| <div class="line"><a name="l00099"></a><span class="lineno"> 99</span>  {</div> |
| <div class="line"><a name="l00100"></a><span class="lineno"> 100</span>  StreamReader reader = <span class="keyword">new</span> StreamReader(stream, System.Text.Encoding.UTF8);</div> |
| <div class="line"><a name="l00101"></a><span class="lineno"> 101</span>  <span class="comment">// make sure it is unmodifiable as we expose it in the outer class</span></div> |
| <div class="line"><a name="l00102"></a><span class="lineno"> 102</span>  <span class="keywordflow">return</span> CharArraySet.UnmodifiableSet(<span class="keyword">new</span> CharArraySet(WordlistLoader.GetWordSet(reader, STOPWORDS_COMMENT), <span class="keyword">true</span>));</div> |
| <div class="line"><a name="l00103"></a><span class="lineno"> 103</span>  }</div> |
| <div class="line"><a name="l00104"></a><span class="lineno"> 104</span>  <span class="keywordflow">finally</span></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>  stream.Close();</div> |
| <div class="line"><a name="l00107"></a><span class="lineno"> 107</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="l00110"></a><span class="lineno"> 110</span> </div> |
| <div class="line"><a name="l00111"></a><span class="lineno"> 111</span>  <span class="keyword">private</span> readonly <a class="code" href="_arabic_analyzer_8cs.html#a63c914dcb7d19365ff0f7c6ea7ef77c4">Version</a> matchVersion;</div> |
| <div class="line"><a name="l00112"></a><span class="lineno"> 112</span> </div> |
| <div class="line"><a name="l00113"></a><span class="lineno"> 113</span>  <span class="comment">/*</span></div> |
| <div class="line"><a name="l00114"></a><span class="lineno"> 114</span> <span class="comment"> * Builds an analyzer with the default stop words:</span></div> |
| <div class="line"><a name="l00115"></a><span class="lineno"> 115</span> <span class="comment"> * {@link #DEFAULT_STOPWORD_FILE}.</span></div> |
| <div class="line"><a name="l00116"></a><span class="lineno"> 116</span> <span class="comment"> */</span></div> |
| <div class="line"><a name="l00117"></a><span class="lineno"><a class="code" href="class_lucene_1_1_net_1_1_analysis_1_1_fa_1_1_persian_analyzer.html#acf1a39f9626fc32805163b02f6c91c23"> 117</a></span>  <span class="keyword">public</span> <a class="code" href="class_lucene_1_1_net_1_1_analysis_1_1_fa_1_1_persian_analyzer.html">PersianAnalyzer</a>(<a class="code" href="_arabic_analyzer_8cs.html#a63c914dcb7d19365ff0f7c6ea7ef77c4">Version</a> matchVersion)</div> |
| <div class="line"><a name="l00118"></a><span class="lineno"> 118</span>  : this(matchVersion, DefaultSetHolder.DEFAULT_STOP_SET)</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> </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> </div> |
| <div class="line"><a name="l00123"></a><span class="lineno"> 123</span>  <span class="comment">/*</span></div> |
| <div class="line"><a name="l00124"></a><span class="lineno"> 124</span> <span class="comment"> * Builds an analyzer with the given stop words </span></div> |
| <div class="line"><a name="l00125"></a><span class="lineno"> 125</span> <span class="comment"> * </span></div> |
| <div class="line"><a name="l00126"></a><span class="lineno"> 126</span> <span class="comment"> * @param matchVersion</span></div> |
| <div class="line"><a name="l00127"></a><span class="lineno"> 127</span> <span class="comment"> * lucene compatibility version</span></div> |
| <div class="line"><a name="l00128"></a><span class="lineno"> 128</span> <span class="comment"> * @param stopwords</span></div> |
| <div class="line"><a name="l00129"></a><span class="lineno"> 129</span> <span class="comment"> * a stopword set</span></div> |
| <div class="line"><a name="l00130"></a><span class="lineno"> 130</span> <span class="comment"> */</span></div> |
| <div class="line"><a name="l00131"></a><span class="lineno"><a class="code" href="class_lucene_1_1_net_1_1_analysis_1_1_fa_1_1_persian_analyzer.html#a9d3106fbccbdf78a77c9b27c0d8dc427"> 131</a></span>  <span class="keyword">public</span> <a class="code" href="class_lucene_1_1_net_1_1_analysis_1_1_fa_1_1_persian_analyzer.html">PersianAnalyzer</a>(<a class="code" href="_arabic_analyzer_8cs.html#a63c914dcb7d19365ff0f7c6ea7ef77c4">Version</a> matchVersion, ISet<string> stopwords)</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>  stoptable = <a class="code" href="class_lucene_1_1_net_1_1_analysis_1_1_char_array_set.html" title="A simple class that stores Strings as char[]'s in a hash table. Note that this is not a general purpo...">CharArraySet</a>.<a class="code" href="class_lucene_1_1_net_1_1_analysis_1_1_char_array_set.html#a044a75a96e08ce42d40f81f4f160c4e6" title="Returns an unmodifiable CharArraySet. This allows to provide unmodifiable views of internal sets for ...">UnmodifiableSet</a>(<a class="code" href="class_lucene_1_1_net_1_1_analysis_1_1_char_array_set.html" title="A simple class that stores Strings as char[]'s in a hash table. Note that this is not a general purpo...">CharArraySet</a>.Copy(stopwords));</div> |
| <div class="line"><a name="l00134"></a><span class="lineno"> 134</span>  this.matchVersion = matchVersion;</div> |
| <div class="line"><a name="l00135"></a><span class="lineno"> 135</span>  }</div> |
| <div class="line"><a name="l00136"></a><span class="lineno"> 136</span> </div> |
| <div class="line"><a name="l00137"></a><span class="lineno"> 137</span>  <span class="comment">/*</span></div> |
| <div class="line"><a name="l00138"></a><span class="lineno"> 138</span> <span class="comment"> * Builds an analyzer with the given stop words.</span></div> |
| <div class="line"><a name="l00139"></a><span class="lineno"> 139</span> <span class="comment"> * @deprecated use {@link #PersianAnalyzer(Version, Set)} instead</span></div> |
| <div class="line"><a name="l00140"></a><span class="lineno"> 140</span> <span class="comment"> */</span></div> |
| <div class="line"><a name="l00141"></a><span class="lineno"><a class="code" href="class_lucene_1_1_net_1_1_analysis_1_1_fa_1_1_persian_analyzer.html#a9e9f6bd0fb7b7e6e677bb0495d569274"> 141</a></span>  <span class="keyword">public</span> <a class="code" href="class_lucene_1_1_net_1_1_analysis_1_1_fa_1_1_persian_analyzer.html">PersianAnalyzer</a>(<a class="code" href="_arabic_analyzer_8cs.html#a63c914dcb7d19365ff0f7c6ea7ef77c4">Version</a> matchVersion, params <span class="keywordtype">string</span>[] stopwords)</div> |
| <div class="line"><a name="l00142"></a><span class="lineno"> 142</span>  : this(matchVersion, <a class="code" href="class_lucene_1_1_net_1_1_analysis_1_1_stop_filter.html" title="Removes stop words from a token stream.">StopFilter</a>.MakeStopSet(stopwords))</div> |
| <div class="line"><a name="l00143"></a><span class="lineno"> 143</span>  {</div> |
| <div class="line"><a name="l00144"></a><span class="lineno"> 144</span> </div> |
| <div class="line"><a name="l00145"></a><span class="lineno"> 145</span>  }</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>  <span class="comment">/*</span></div> |
| <div class="line"><a name="l00148"></a><span class="lineno"> 148</span> <span class="comment"> * Builds an analyzer with the given stop words.</span></div> |
| <div class="line"><a name="l00149"></a><span class="lineno"> 149</span> <span class="comment"> * @deprecated use {@link #PersianAnalyzer(Version, Set)} instead</span></div> |
| <div class="line"><a name="l00150"></a><span class="lineno"> 150</span> <span class="comment"> */</span></div> |
| <div class="line"><a name="l00151"></a><span class="lineno"><a class="code" href="class_lucene_1_1_net_1_1_analysis_1_1_fa_1_1_persian_analyzer.html#ac655129b7a583af3c0e3950ff35d6309"> 151</a></span>  <span class="keyword">public</span> <a class="code" href="class_lucene_1_1_net_1_1_analysis_1_1_fa_1_1_persian_analyzer.html">PersianAnalyzer</a>(<a class="code" href="_arabic_analyzer_8cs.html#a63c914dcb7d19365ff0f7c6ea7ef77c4">Version</a> matchVersion, IDictionary<string, string> stopwords)</div> |
| <div class="line"><a name="l00152"></a><span class="lineno"> 152</span>  : this(matchVersion, stopwords.Keys.ToArray())</div> |
| <div class="line"><a name="l00153"></a><span class="lineno"> 153</span>  {</div> |
| <div class="line"><a name="l00154"></a><span class="lineno"> 154</span> </div> |
| <div class="line"><a name="l00155"></a><span class="lineno"> 155</span>  }</div> |
| <div class="line"><a name="l00156"></a><span class="lineno"> 156</span> </div> |
| <div class="line"><a name="l00157"></a><span class="lineno"> 157</span>  <span class="comment">/*</span></div> |
| <div class="line"><a name="l00158"></a><span class="lineno"> 158</span> <span class="comment"> * Builds an analyzer with the given stop words. Lines can be commented out</span></div> |
| <div class="line"><a name="l00159"></a><span class="lineno"> 159</span> <span class="comment"> * using {@link #STOPWORDS_COMMENT}</span></div> |
| <div class="line"><a name="l00160"></a><span class="lineno"> 160</span> <span class="comment"> * @deprecated use {@link #PersianAnalyzer(Version, Set)} instead</span></div> |
| <div class="line"><a name="l00161"></a><span class="lineno"> 161</span> <span class="comment"> */</span></div> |
| <div class="line"><a name="l00162"></a><span class="lineno"><a class="code" href="class_lucene_1_1_net_1_1_analysis_1_1_fa_1_1_persian_analyzer.html#a8b54c9e8608aeb125ab7a6761f21e529"> 162</a></span>  <span class="keyword">public</span> <a class="code" href="class_lucene_1_1_net_1_1_analysis_1_1_fa_1_1_persian_analyzer.html">PersianAnalyzer</a>(<a class="code" href="_arabic_analyzer_8cs.html#a63c914dcb7d19365ff0f7c6ea7ef77c4">Version</a> matchVersion, FileInfo stopwords)</div> |
| <div class="line"><a name="l00163"></a><span class="lineno"> 163</span>  : this(matchVersion, <a class="code" href="class_lucene_1_1_net_1_1_analysis_1_1_wordlist_loader.html" title="Loader for text files that represent a list of stopwords.">WordlistLoader</a>.GetWordSet(stopwords, STOPWORDS_COMMENT))</div> |
| <div class="line"><a name="l00164"></a><span class="lineno"> 164</span>  {</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> </div> |
| <div class="line"><a name="l00168"></a><span class="lineno"> 168</span>  <span class="comment">/*</span></div> |
| <div class="line"><a name="l00169"></a><span class="lineno"> 169</span> <span class="comment"> * Creates a {@link TokenStream} which tokenizes all the text in the provided</span></div> |
| <div class="line"><a name="l00170"></a><span class="lineno"> 170</span> <span class="comment"> * {@link Reader}.</span></div> |
| <div class="line"><a name="l00171"></a><span class="lineno"> 171</span> <span class="comment"> * </span></div> |
| <div class="line"><a name="l00172"></a><span class="lineno"> 172</span> <span class="comment"> * @return A {@link TokenStream} built from a {@link ArabicLetterTokenizer}</span></div> |
| <div class="line"><a name="l00173"></a><span class="lineno"> 173</span> <span class="comment"> * filtered with {@link LowerCaseFilter}, </span></div> |
| <div class="line"><a name="l00174"></a><span class="lineno"> 174</span> <span class="comment"> * {@link ArabicNormalizationFilter},</span></div> |
| <div class="line"><a name="l00175"></a><span class="lineno"> 175</span> <span class="comment"> * {@link PersianNormalizationFilter} and Persian Stop words</span></div> |
| <div class="line"><a name="l00176"></a><span class="lineno"> 176</span> <span class="comment"> */</span></div> |
| <div class="line"><a name="l00177"></a><span class="lineno"><a class="code" href="class_lucene_1_1_net_1_1_analysis_1_1_fa_1_1_persian_analyzer.html#acbd65717529460aebbdce888f32ecdce"> 177</a></span>  <span class="keyword">public</span> <span class="keyword">override</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> <a class="code" href="_more_like_this_8cs.html#a205730fc8c2839cf92051d131140dae0">TokenStream</a>(String fieldName, TextReader reader)</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_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> result = <span class="keyword">new</span> <a class="code" href="class_lucene_1_1_net_1_1_analysis_1_1_a_r_1_1_arabic_letter_tokenizer.html">ArabicLetterTokenizer</a>(reader);</div> |
| <div class="line"><a name="l00180"></a><span class="lineno"> 180</span>  result = <span class="keyword">new</span> <a class="code" href="class_lucene_1_1_net_1_1_analysis_1_1_lower_case_filter.html" title="Normalizes token text to lower case.">LowerCaseFilter</a>(result);</div> |
| <div class="line"><a name="l00181"></a><span class="lineno"> 181</span>  result = <span class="keyword">new</span> <a class="code" href="class_lucene_1_1_net_1_1_analysis_1_1_a_r_1_1_arabic_normalization_filter.html">ArabicNormalizationFilter</a>(result);</div> |
| <div class="line"><a name="l00182"></a><span class="lineno"> 182</span>  <span class="comment">/* additional persian-specific normalization */</span></div> |
| <div class="line"><a name="l00183"></a><span class="lineno"> 183</span>  result = <span class="keyword">new</span> <a class="code" href="class_lucene_1_1_net_1_1_analysis_1_1_fa_1_1_persian_normalization_filter.html">PersianNormalizationFilter</a>(result);</div> |
| <div class="line"><a name="l00184"></a><span class="lineno"> 184</span>  <span class="comment">/*</span></div> |
| <div class="line"><a name="l00185"></a><span class="lineno"> 185</span> <span class="comment"> * the order here is important: the stopword list is normalized with the</span></div> |
| <div class="line"><a name="l00186"></a><span class="lineno"> 186</span> <span class="comment"> * above!</span></div> |
| <div class="line"><a name="l00187"></a><span class="lineno"> 187</span> <span class="comment"> */</span></div> |
| <div class="line"><a name="l00188"></a><span class="lineno"> 188</span>  result = <span class="keyword">new</span> <a class="code" href="class_lucene_1_1_net_1_1_analysis_1_1_stop_filter.html" title="Removes stop words from a token stream.">StopFilter</a>(<a class="code" href="class_lucene_1_1_net_1_1_analysis_1_1_stop_filter.html" title="Removes stop words from a token stream.">StopFilter</a>.<a class="code" href="class_lucene_1_1_net_1_1_analysis_1_1_stop_filter.html#ab11fb0a8f9564b60ae61e29bef912ca8" title="Returns version-dependent default for enablePositionIncrements. Analyzers that embed StopFilter use t...">GetEnablePositionIncrementsVersionDefault</a>(matchVersion),</div> |
| <div class="line"><a name="l00189"></a><span class="lineno"> 189</span>  result, stoptable);</div> |
| <div class="line"><a name="l00190"></a><span class="lineno"> 190</span>  <span class="keywordflow">return</span> result;</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> </div> |
| <div class="line"><a name="l00193"></a><span class="lineno"> 193</span>  <span class="keyword">private</span> <span class="keyword">class </span>SavedStreams</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>  <span class="keyword">protected</span> <span class="keyword">internal</span> <a class="code" href="class_lucene_1_1_net_1_1_analysis_1_1_tokenizer.html" title="A Tokenizer is a TokenStream whose input is a Reader. This is an abstract class; subclasses must over...">Tokenizer</a> source;</div> |
| <div class="line"><a name="l00196"></a><span class="lineno"> 196</span>  <span class="keyword">protected</span> <span class="keyword">internal</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> result;</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> </div> |
| <div class="line"><a name="l00199"></a><span class="lineno"> 199</span>  <span class="comment">/*</span></div> |
| <div class="line"><a name="l00200"></a><span class="lineno"> 200</span> <span class="comment"> * Returns a (possibly reused) {@link TokenStream} which tokenizes all the text </span></div> |
| <div class="line"><a name="l00201"></a><span class="lineno"> 201</span> <span class="comment"> * in the provided {@link Reader}.</span></div> |
| <div class="line"><a name="l00202"></a><span class="lineno"> 202</span> <span class="comment"> * </span></div> |
| <div class="line"><a name="l00203"></a><span class="lineno"> 203</span> <span class="comment"> * @return A {@link TokenStream} built from a {@link ArabicLetterTokenizer}</span></div> |
| <div class="line"><a name="l00204"></a><span class="lineno"> 204</span> <span class="comment"> * filtered with {@link LowerCaseFilter}, </span></div> |
| <div class="line"><a name="l00205"></a><span class="lineno"> 205</span> <span class="comment"> * {@link ArabicNormalizationFilter},</span></div> |
| <div class="line"><a name="l00206"></a><span class="lineno"> 206</span> <span class="comment"> * {@link PersianNormalizationFilter} and Persian Stop words</span></div> |
| <div class="line"><a name="l00207"></a><span class="lineno"> 207</span> <span class="comment"> */</span></div> |
| <div class="line"><a name="l00208"></a><span class="lineno"><a class="code" href="class_lucene_1_1_net_1_1_analysis_1_1_fa_1_1_persian_analyzer.html#ac13ea02bc5e1a220f1acb0c36b23c9eb"> 208</a></span>  <span class="keyword">public</span> <span class="keyword">override</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> ReusableTokenStream(String fieldName, TextReader reader)</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>  SavedStreams streams = (SavedStreams)PreviousTokenStream;</div> |
| <div class="line"><a name="l00211"></a><span class="lineno"> 211</span>  <span class="keywordflow">if</span> (streams == null)</div> |
| <div class="line"><a name="l00212"></a><span class="lineno"> 212</span>  {</div> |
| <div class="line"><a name="l00213"></a><span class="lineno"> 213</span>  streams = <span class="keyword">new</span> SavedStreams();</div> |
| <div class="line"><a name="l00214"></a><span class="lineno"> 214</span>  streams.source = <span class="keyword">new</span> <a class="code" href="class_lucene_1_1_net_1_1_analysis_1_1_a_r_1_1_arabic_letter_tokenizer.html">ArabicLetterTokenizer</a>(reader);</div> |
| <div class="line"><a name="l00215"></a><span class="lineno"> 215</span>  streams.result = <span class="keyword">new</span> <a class="code" href="class_lucene_1_1_net_1_1_analysis_1_1_lower_case_filter.html" title="Normalizes token text to lower case.">LowerCaseFilter</a>(streams.source);</div> |
| <div class="line"><a name="l00216"></a><span class="lineno"> 216</span>  streams.result = <span class="keyword">new</span> <a class="code" href="class_lucene_1_1_net_1_1_analysis_1_1_a_r_1_1_arabic_normalization_filter.html">ArabicNormalizationFilter</a>(streams.result);</div> |
| <div class="line"><a name="l00217"></a><span class="lineno"> 217</span>  <span class="comment">/* additional persian-specific normalization */</span></div> |
| <div class="line"><a name="l00218"></a><span class="lineno"> 218</span>  streams.result = <span class="keyword">new</span> <a class="code" href="class_lucene_1_1_net_1_1_analysis_1_1_fa_1_1_persian_normalization_filter.html">PersianNormalizationFilter</a>(streams.result);</div> |
| <div class="line"><a name="l00219"></a><span class="lineno"> 219</span>  <span class="comment">/*</span></div> |
| <div class="line"><a name="l00220"></a><span class="lineno"> 220</span> <span class="comment"> * the order here is important: the stopword list is normalized with the</span></div> |
| <div class="line"><a name="l00221"></a><span class="lineno"> 221</span> <span class="comment"> * above!</span></div> |
| <div class="line"><a name="l00222"></a><span class="lineno"> 222</span> <span class="comment"> */</span></div> |
| <div class="line"><a name="l00223"></a><span class="lineno"> 223</span>  streams.result = <span class="keyword">new</span> <a class="code" href="class_lucene_1_1_net_1_1_analysis_1_1_stop_filter.html" title="Removes stop words from a token stream.">StopFilter</a>(<a class="code" href="class_lucene_1_1_net_1_1_analysis_1_1_stop_filter.html" title="Removes stop words from a token stream.">StopFilter</a>.<a class="code" href="class_lucene_1_1_net_1_1_analysis_1_1_stop_filter.html#ab11fb0a8f9564b60ae61e29bef912ca8" title="Returns version-dependent default for enablePositionIncrements. Analyzers that embed StopFilter use t...">GetEnablePositionIncrementsVersionDefault</a>(matchVersion),</div> |
| <div class="line"><a name="l00224"></a><span class="lineno"> 224</span>  streams.result, stoptable);</div> |
| <div class="line"><a name="l00225"></a><span class="lineno"> 225</span>  PreviousTokenStream = streams;</div> |
| <div class="line"><a name="l00226"></a><span class="lineno"> 226</span>  }</div> |
| <div class="line"><a name="l00227"></a><span class="lineno"> 227</span>  <span class="keywordflow">else</span></div> |
| <div class="line"><a name="l00228"></a><span class="lineno"> 228</span>  {</div> |
| <div class="line"><a name="l00229"></a><span class="lineno"> 229</span>  streams.source.Reset(reader);</div> |
| <div class="line"><a name="l00230"></a><span class="lineno"> 230</span>  }</div> |
| <div class="line"><a name="l00231"></a><span class="lineno"> 231</span>  <span class="keywordflow">return</span> streams.result;</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>  }</div> |
| <div class="line"><a name="l00234"></a><span class="lineno"> 234</span> }</div> |
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