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| <div class="title">TermsFilter.cs</div> </div> |
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| <a href="_queries_2_terms_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> <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> System.Text;</div> |
| <div class="line"><a name="l00022"></a><span class="lineno"> 22</span> </div> |
| <div class="line"><a name="l00023"></a><span class="lineno"> 23</span> <span class="keyword">using</span> Lucene.Net.Index;</div> |
| <div class="line"><a name="l00024"></a><span class="lineno"> 24</span> <span class="keyword">using</span> Lucene.Net.Util;</div> |
| <div class="line"><a name="l00025"></a><span class="lineno"> 25</span> </div> |
| <div class="line"><a name="l00026"></a><span class="lineno"> 26</span> <span class="keyword">namespace </span>Lucene.Net.Search</div> |
| <div class="line"><a name="l00027"></a><span class="lineno"> 27</span> {</div> |
| <div class="line"><a name="l00031"></a><span class="lineno"><a class="code" href="class_lucene_1_1_net_1_1_search_1_1_terms_filter.html"> 31</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_terms_filter.html" title="A filter that contains multiple terms. ">TermsFilter</a> : <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="l00032"></a><span class="lineno"> 32</span>  {</div> |
| <div class="line"><a name="l00036"></a><span class="lineno"><a class="code" href="class_lucene_1_1_net_1_1_search_1_1_terms_filter.html#a6c4ef19aba717527b4901edf3f037be5"> 36</a></span>  <span class="keyword">protected</span> ISet<Term> terms = <span class="keyword">new</span> SortedSet<Term>();</div> |
| <div class="line"><a name="l00037"></a><span class="lineno"> 37</span> </div> |
| <div class="line"><a name="l00042"></a><span class="lineno"><a class="code" href="class_lucene_1_1_net_1_1_search_1_1_terms_filter.html#a6a125791855bcdadc9a16f8bd06005be"> 42</a></span>  <span class="keyword">public</span> <span class="keywordtype">void</span> AddTerm(<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="l00043"></a><span class="lineno"> 43</span>  {</div> |
| <div class="line"><a name="l00044"></a><span class="lineno"> 44</span>  terms.Add(term);</div> |
| <div class="line"><a name="l00045"></a><span class="lineno"> 45</span>  }</div> |
| <div class="line"><a name="l00046"></a><span class="lineno"> 46</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_terms_filter.html#aa7eb768c6a4835a226520a6db07c5d85"> 52</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_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="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="l00053"></a><span class="lineno"> 53</span>  {</div> |
| <div class="line"><a name="l00054"></a><span class="lineno"> 54</span>  <a class="code" href="class_lucene_1_1_net_1_1_util_1_1_open_bit_set.html" title="An "open" BitSet implementation that allows direct access to the array of words storing the bits...">OpenBitSet</a> result = <span class="keyword">new</span> <a class="code" href="_field_cache_terms_filter_8cs.html#a39e4630d91e4f7fc118eb51aa4d221a0">OpenBitSet</a>(reader.<a class="code" href="class_lucene_1_1_net_1_1_index_1_1_index_reader.html#ac7694e685dde51863b8974da924fa439" title="Returns one greater than the largest possible document number. This may be used to, e.g., determine how big to allocate an array which will have an element for every document number in an index. ">MaxDoc</a>);</div> |
| <div class="line"><a name="l00055"></a><span class="lineno"> 55</span>  <a class="code" href="interface_lucene_1_1_net_1_1_index_1_1_term_docs.html" title="TermDocs provides an interface for enumerating <document, frequency> pairs for a term. The document portion names each document containing the term. Documents are indicated by number. The frequency portion gives the number of times the term occurred in each document. The pairs are ordered by document number. ">TermDocs</a> td = reader.<a class="code" href="class_lucene_1_1_net_1_1_index_1_1_index_reader.html#acbbce30c73e871a7cf5c151ee0c775b9" title="Returns an enumeration of all the documents which contain term. For each document, the document number, the frequency of the term in that document is also provided, for use in search scoring. If term is null, then all non-deleted docs are returned with freq=1. Thus, this method implements the mapping: &#160;&#160; => &#160;&#160; <docNum, freq>* The enumeration is ordered by document number. Each document number is greater than all that precede it in the enumeration. ">TermDocs</a>();</div> |
| <div class="line"><a name="l00056"></a><span class="lineno"> 56</span>  <span class="keywordflow">try</span></div> |
| <div class="line"><a name="l00057"></a><span class="lineno"> 57</span>  {</div> |
| <div class="line"><a name="l00058"></a><span class="lineno"> 58</span>  <span class="keywordflow">foreach</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 <span class="keywordflow">in</span> this.terms)</div> |
| <div class="line"><a name="l00059"></a><span class="lineno"> 59</span>  {</div> |
| <div class="line"><a name="l00060"></a><span class="lineno"> 60</span>  td.<a class="code" href="interface_lucene_1_1_net_1_1_index_1_1_term_docs.html#a63eba164c41e26450d60753cd548cbcb" title="Sets this to the data for a term. The enumeration is reset to the start of the data for this term...">Seek</a>(t);</div> |
| <div class="line"><a name="l00061"></a><span class="lineno"> 61</span>  <span class="keywordflow">while</span> (td.<a class="code" href="interface_lucene_1_1_net_1_1_index_1_1_term_docs.html#a5a07b58ff92edf95aff4fbc264eb12e7" title="Moves to the next pair in the enumeration. Returns true iff there is such a next pair in the enumerat...">Next</a>())</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>  result.<a class="code" href="class_lucene_1_1_net_1_1_util_1_1_open_bit_set.html#acfb26a60d06cb5c1231ab2e441acf049" title="sets a bit, expanding the set size if necessary ">Set</a>(td.<a class="code" href="interface_lucene_1_1_net_1_1_index_1_1_term_docs.html#af4d11271571bff528c0639eb69cd8b4d" title="Returns the current document number. This is invalid until Next() is called for the first time...">Doc</a>);</div> |
| <div class="line"><a name="l00064"></a><span class="lineno"> 64</span>  }</div> |
| <div class="line"><a name="l00065"></a><span class="lineno"> 65</span>  }</div> |
| <div class="line"><a name="l00066"></a><span class="lineno"> 66</span>  }</div> |
| <div class="line"><a name="l00067"></a><span class="lineno"> 67</span>  <span class="keywordflow">finally</span></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>  td.<a class="code" href="interface_lucene_1_1_net_1_1_index_1_1_term_docs.html#a9cc49d963030dda58f218ca274430dbb" title="Frees associated resources. ">Close</a>();</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="keywordflow">return</span> result;</div> |
| <div class="line"><a name="l00073"></a><span class="lineno"> 73</span>  }</div> |
| <div class="line"><a name="l00074"></a><span class="lineno"> 74</span> </div> |
| <div class="line"><a name="l00075"></a><span class="lineno"><a class="code" href="class_lucene_1_1_net_1_1_search_1_1_terms_filter.html#af3c921d04f230f0522696bd4c52ac4c4"> 75</a></span>  <span class="keyword">public</span> <span class="keyword">override</span> <span class="keywordtype">bool</span> Equals(Object obj)</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> (<span class="keyword">this</span> == obj)</div> |
| <div class="line"><a name="l00078"></a><span class="lineno"> 78</span>  {</div> |
| <div class="line"><a name="l00079"></a><span class="lineno"> 79</span>  <span class="keywordflow">return</span> <span class="keyword">true</span>;</div> |
| <div class="line"><a name="l00080"></a><span class="lineno"> 80</span>  }</div> |
| <div class="line"><a name="l00081"></a><span class="lineno"> 81</span>  <span class="keywordflow">if</span> ((obj == null) || !(obj is <a class="code" href="class_lucene_1_1_net_1_1_search_1_1_terms_filter.html" title="A filter that contains multiple terms. ">TermsFilter</a>))</div> |
| <div class="line"><a name="l00082"></a><span class="lineno"> 82</span>  {</div> |
| <div class="line"><a name="l00083"></a><span class="lineno"> 83</span>  <span class="keywordflow">return</span> <span class="keyword">false</span>;</div> |
| <div class="line"><a name="l00084"></a><span class="lineno"> 84</span>  }</div> |
| <div class="line"><a name="l00085"></a><span class="lineno"> 85</span>  TermsFilter test = (TermsFilter)obj;</div> |
| <div class="line"><a name="l00086"></a><span class="lineno"> 86</span>  <span class="comment">// TODO: Does SortedSet have an issues like List<T>? see EquatableList in Support</span></div> |
| <div class="line"><a name="l00087"></a><span class="lineno"> 87</span>  <span class="keywordflow">return</span> (terms == test.<a class="code" href="class_lucene_1_1_net_1_1_search_1_1_terms_filter.html#a6c4ef19aba717527b4901edf3f037be5" title="The set of terms for this filter. ">terms</a> || (terms != null && terms.Equals(test.<a class="code" href="class_lucene_1_1_net_1_1_search_1_1_terms_filter.html#a6c4ef19aba717527b4901edf3f037be5" title="The set of terms for this filter. ">terms</a>)));</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> </div> |
| <div class="line"><a name="l00090"></a><span class="lineno"><a class="code" href="class_lucene_1_1_net_1_1_search_1_1_terms_filter.html#a939c5736de4afcb247ddf2edc98e6358"> 90</a></span>  <span class="keyword">public</span> <span class="keyword">override</span> <span class="keywordtype">int</span> GetHashCode()</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>  <span class="keywordtype">int</span> hash = 9;</div> |
| <div class="line"><a name="l00093"></a><span class="lineno"> 93</span>  <span class="keywordflow">foreach</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 <span class="keywordflow">in</span> this.terms)</div> |
| <div class="line"><a name="l00094"></a><span class="lineno"> 94</span>  {</div> |
| <div class="line"><a name="l00095"></a><span class="lineno"> 95</span>  hash = 31 * hash + t.<a class="code" href="class_lucene_1_1_net_1_1_index_1_1_term.html#a7e009618832cdc18f4e3018837fbaa6f">GetHashCode</a>();</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>  <span class="keywordflow">return</span> hash;</div> |
| <div class="line"><a name="l00098"></a><span class="lineno"> 98</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"><a class="code" href="class_lucene_1_1_net_1_1_search_1_1_terms_filter.html#a81cebf824693e0a7362953b028874532"> 100</a></span>  <span class="keyword">public</span> <span class="keyword">override</span> <span class="keywordtype">string</span> ToString()</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>  StringBuilder sb = <span class="keyword">new</span> StringBuilder();</div> |
| <div class="line"><a name="l00103"></a><span class="lineno"> 103</span>  sb.Append(<span class="stringliteral">"("</span>);</div> |
| <div class="line"><a name="l00104"></a><span class="lineno"> 104</span>  <span class="keywordflow">foreach</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 <span class="keywordflow">in</span> this.terms)</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>  sb.AppendFormat(<span class="stringliteral">" {0}:{1}"</span>, t.<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>, t.<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="l00107"></a><span class="lineno"> 107</span>  }</div> |
| <div class="line"><a name="l00108"></a><span class="lineno"> 108</span>  sb.Append(<span class="stringliteral">" )"</span>);</div> |
| <div class="line"><a name="l00109"></a><span class="lineno"> 109</span>  <span class="keywordflow">return</span> sb.ToString();</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>  }</div> |
| <div class="line"><a name="l00112"></a><span class="lineno"> 112</span> }</div> |
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