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| <a href="_req_excl_scorer_8cs.html">Go to the documentation of this file.</a><div class="fragment"><div class="line"><a name="l00001"></a><span class="lineno"> 1</span> <span class="comment">/* </span></div> |
| <div class="line"><a name="l00002"></a><span class="lineno"> 2</span> <span class="comment"> * Licensed to the Apache Software Foundation (ASF) under one or more</span></div> |
| <div class="line"><a name="l00003"></a><span class="lineno"> 3</span> <span class="comment"> * contributor license agreements. See the NOTICE file distributed with</span></div> |
| <div class="line"><a name="l00004"></a><span class="lineno"> 4</span> <span class="comment"> * this work for additional information regarding copyright ownership.</span></div> |
| <div class="line"><a name="l00005"></a><span class="lineno"> 5</span> <span class="comment"> * The ASF licenses this file to You under the Apache License, Version 2.0</span></div> |
| <div class="line"><a name="l00006"></a><span class="lineno"> 6</span> <span class="comment"> * (the "License"); you may not use this file except in compliance with</span></div> |
| <div class="line"><a name="l00007"></a><span class="lineno"> 7</span> <span class="comment"> * the License. You may obtain a copy of the License at</span></div> |
| <div class="line"><a name="l00008"></a><span class="lineno"> 8</span> <span class="comment"> * </span></div> |
| <div class="line"><a name="l00009"></a><span class="lineno"> 9</span> <span class="comment"> * http://www.apache.org/licenses/LICENSE-2.0</span></div> |
| <div class="line"><a name="l00010"></a><span class="lineno"> 10</span> <span class="comment"> * </span></div> |
| <div class="line"><a name="l00011"></a><span class="lineno"> 11</span> <span class="comment"> * Unless required by applicable law or agreed to in writing, software</span></div> |
| <div class="line"><a name="l00012"></a><span class="lineno"> 12</span> <span class="comment"> * distributed under the License is distributed on an "AS IS" BASIS,</span></div> |
| <div class="line"><a name="l00013"></a><span class="lineno"> 13</span> <span class="comment"> * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.</span></div> |
| <div class="line"><a name="l00014"></a><span class="lineno"> 14</span> <span class="comment"> * See the License for the specific language governing permissions and</span></div> |
| <div class="line"><a name="l00015"></a><span class="lineno"> 15</span> <span class="comment"> * limitations under the License.</span></div> |
| <div class="line"><a name="l00016"></a><span class="lineno"> 16</span> <span class="comment"> */</span></div> |
| <div class="line"><a name="l00017"></a><span class="lineno"> 17</span> </div> |
| <div class="line"><a name="l00018"></a><span class="lineno"> 18</span> <span class="keyword">using</span> System;</div> |
| <div class="line"><a name="l00019"></a><span class="lineno"> 19</span> </div> |
| <div class="line"><a name="l00020"></a><span class="lineno"> 20</span> <span class="keyword">namespace </span>Lucene.Net.Search</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>  </div> |
| <div class="line"><a name="l00023"></a><span class="lineno"> 23</span>  </div> |
| <div class="line"><a name="l00030"></a><span class="lineno"><a class="code" href="class_lucene_1_1_net_1_1_search_1_1_req_excl_scorer.html"> 30</a></span>  <span class="keyword">class </span><a class="code" href="class_lucene_1_1_net_1_1_search_1_1_req_excl_scorer.html" title="A Scorer for queries with a required subscorer and an excluding (prohibited) sub DocIdSetIterator. This Scorer implements DocIdSetIterator.Advance(int), and it uses the skipTo() on the given scorers. ">ReqExclScorer</a>:<a class="code" href="class_lucene_1_1_net_1_1_search_1_1_scorer.html" title="Expert: Common scoring functionality for different types of queries.">Scorer</a></div> |
| <div class="line"><a name="l00031"></a><span class="lineno"> 31</span>  {</div> |
| <div class="line"><a name="l00032"></a><span class="lineno"> 32</span>  <span class="keyword">private</span> <a class="code" href="class_lucene_1_1_net_1_1_search_1_1_scorer.html" title="Expert: Common scoring functionality for different types of queries.">Scorer</a> reqScorer;</div> |
| <div class="line"><a name="l00033"></a><span class="lineno"> 33</span>  <span class="keyword">private</span> <a class="code" href="class_lucene_1_1_net_1_1_search_1_1_doc_id_set_iterator.html" title="This abstract class defines methods to iterate over a set of non-decreasing doc ids. Note that this class assumes it iterates on doc Ids, and therefore NO_MORE_DOCS is set to Int32.MaxValue in order to be used as a sentinel object. Implementations of this class are expected to consider int.MaxValue as an invalid value. ">DocIdSetIterator</a> exclDisi;</div> |
| <div class="line"><a name="l00034"></a><span class="lineno"> 34</span>  <span class="keyword">private</span> <span class="keywordtype">int</span> doc = - 1;</div> |
| <div class="line"><a name="l00035"></a><span class="lineno"> 35</span>  </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_req_excl_scorer.html#a75d1fa4d85cbf1263a379cdefffdf1a5"> 41</a></span>  <span class="keyword">public</span> <a class="code" href="class_lucene_1_1_net_1_1_search_1_1_req_excl_scorer.html" title="A Scorer for queries with a required subscorer and an excluding (prohibited) sub DocIdSetIterator. This Scorer implements DocIdSetIterator.Advance(int), and it uses the skipTo() on the given scorers. ">ReqExclScorer</a>(<a class="code" href="class_lucene_1_1_net_1_1_search_1_1_scorer.html" title="Expert: Common scoring functionality for different types of queries.">Scorer</a> reqScorer, <a class="code" href="class_lucene_1_1_net_1_1_search_1_1_doc_id_set_iterator.html" title="This abstract class defines methods to iterate over a set of non-decreasing doc ids. Note that this class assumes it iterates on doc Ids, and therefore NO_MORE_DOCS is set to Int32.MaxValue in order to be used as a sentinel object. Implementations of this class are expected to consider int.MaxValue as an invalid value. ">DocIdSetIterator</a> exclDisi):base(null)</div> |
| <div class="line"><a name="l00042"></a><span class="lineno"> 42</span>  { <span class="comment">// No similarity used.</span></div> |
| <div class="line"><a name="l00043"></a><span class="lineno"> 43</span>  this.reqScorer = reqScorer;</div> |
| <div class="line"><a name="l00044"></a><span class="lineno"> 44</span>  this.exclDisi = exclDisi;</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="l00047"></a><span class="lineno"><a class="code" href="class_lucene_1_1_net_1_1_search_1_1_req_excl_scorer.html#affa16c81affa9665e6b73e4d7a413ec8"> 47</a></span>  <span class="keyword">public</span> <span class="keyword">override</span> <span class="keywordtype">int</span> NextDoc()</div> |
| <div class="line"><a name="l00048"></a><span class="lineno"> 48</span>  {</div> |
| <div class="line"><a name="l00049"></a><span class="lineno"> 49</span>  <span class="keywordflow">if</span> (reqScorer == null)</div> |
| <div class="line"><a name="l00050"></a><span class="lineno"> 50</span>  {</div> |
| <div class="line"><a name="l00051"></a><span class="lineno"> 51</span>  <span class="keywordflow">return</span> doc;</div> |
| <div class="line"><a name="l00052"></a><span class="lineno"> 52</span>  }</div> |
| <div class="line"><a name="l00053"></a><span class="lineno"> 53</span>  doc = reqScorer.<a class="code" href="class_lucene_1_1_net_1_1_search_1_1_doc_id_set_iterator.html#a70f16616e044ffd57b07dbc426c34e0d" title="Advances to the next document in the set and returns the doc it is currently on, or NO_MORE_DOCS if t...">NextDoc</a>();</div> |
| <div class="line"><a name="l00054"></a><span class="lineno"> 54</span>  <span class="keywordflow">if</span> (doc == NO_MORE_DOCS)</div> |
| <div class="line"><a name="l00055"></a><span class="lineno"> 55</span>  {</div> |
| <div class="line"><a name="l00056"></a><span class="lineno"> 56</span>  reqScorer = null; <span class="comment">// exhausted, nothing left</span></div> |
| <div class="line"><a name="l00057"></a><span class="lineno"> 57</span>  <span class="keywordflow">return</span> doc;</div> |
| <div class="line"><a name="l00058"></a><span class="lineno"> 58</span>  }</div> |
| <div class="line"><a name="l00059"></a><span class="lineno"> 59</span>  <span class="keywordflow">if</span> (exclDisi == null)</div> |
| <div class="line"><a name="l00060"></a><span class="lineno"> 60</span>  {</div> |
| <div class="line"><a name="l00061"></a><span class="lineno"> 61</span>  <span class="keywordflow">return</span> doc;</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="keywordflow">return</span> doc = ToNonExcluded();</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="l00078"></a><span class="lineno"> 78</span>  <span class="keyword">private</span> <span class="keywordtype">int</span> ToNonExcluded()</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="keywordtype">int</span> exclDoc = exclDisi.DocID();</div> |
| <div class="line"><a name="l00081"></a><span class="lineno"> 81</span>  <span class="keywordtype">int</span> reqDoc = reqScorer.DocID(); <span class="comment">// may be excluded</span></div> |
| <div class="line"><a name="l00082"></a><span class="lineno"> 82</span>  <span class="keywordflow">do</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> (reqDoc < exclDoc)</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">return</span> reqDoc; <span class="comment">// reqScorer advanced to before exclScorer, ie. not excluded</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>  <span class="keywordflow">else</span> <span class="keywordflow">if</span> (reqDoc > exclDoc)</div> |
| <div class="line"><a name="l00089"></a><span class="lineno"> 89</span>  {</div> |
| <div class="line"><a name="l00090"></a><span class="lineno"> 90</span>  exclDoc = exclDisi.Advance(reqDoc);</div> |
| <div class="line"><a name="l00091"></a><span class="lineno"> 91</span>  <span class="keywordflow">if</span> (exclDoc == NO_MORE_DOCS)</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>  exclDisi = null; <span class="comment">// exhausted, no more exclusions</span></div> |
| <div class="line"><a name="l00094"></a><span class="lineno"> 94</span>  <span class="keywordflow">return</span> reqDoc;</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>  <span class="keywordflow">if</span> (exclDoc > reqDoc)</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>  <span class="keywordflow">return</span> reqDoc; <span class="comment">// not excluded</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>  }</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>  <span class="keywordflow">while</span> ((reqDoc = reqScorer.NextDoc()) != NO_MORE_DOCS);</div> |
| <div class="line"><a name="l00103"></a><span class="lineno"> 103</span>  reqScorer = null; <span class="comment">// exhausted, nothing left</span></div> |
| <div class="line"><a name="l00104"></a><span class="lineno"> 104</span>  <span class="keywordflow">return</span> NO_MORE_DOCS;</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>  </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_req_excl_scorer.html#a82fb8cd1e4cd44a724e42e3deca922e4"> 107</a></span>  <span class="keyword">public</span> <span class="keyword">override</span> <span class="keywordtype">int</span> DocID()</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>  <span class="keywordflow">return</span> doc;</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="l00117"></a><span class="lineno"><a class="code" href="class_lucene_1_1_net_1_1_search_1_1_req_excl_scorer.html#a058f70b0a54212f8566025135e31cb3c"> 117</a></span>  <span class="keyword">public</span> <span class="keyword">override</span> <span class="keywordtype">float</span> Score()</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>  <span class="keywordflow">return</span> reqScorer.Score(); <span class="comment">// reqScorer may be null when next() or skipTo() already return false</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"><a class="code" href="class_lucene_1_1_net_1_1_search_1_1_req_excl_scorer.html#a1afbd07375aea642bea2a0c17c6f3bc3"> 122</a></span>  <span class="keyword">public</span> <span class="keyword">override</span> <span class="keywordtype">int</span> Advance(<span class="keywordtype">int</span> target)</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>  <span class="keywordflow">if</span> (reqScorer == null)</div> |
| <div class="line"><a name="l00125"></a><span class="lineno"> 125</span>  {</div> |
| <div class="line"><a name="l00126"></a><span class="lineno"> 126</span>  <span class="keywordflow">return</span> doc = NO_MORE_DOCS;</div> |
| <div class="line"><a name="l00127"></a><span class="lineno"> 127</span>  }</div> |
| <div class="line"><a name="l00128"></a><span class="lineno"> 128</span>  <span class="keywordflow">if</span> (exclDisi == null)</div> |
| <div class="line"><a name="l00129"></a><span class="lineno"> 129</span>  {</div> |
| <div class="line"><a name="l00130"></a><span class="lineno"> 130</span>  <span class="keywordflow">return</span> doc = reqScorer.Advance(target);</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> (reqScorer.Advance(target) == NO_MORE_DOCS)</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>  reqScorer = null;</div> |
| <div class="line"><a name="l00135"></a><span class="lineno"> 135</span>  <span class="keywordflow">return</span> doc = NO_MORE_DOCS;</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="keywordflow">return</span> doc = ToNonExcluded();</div> |
| <div class="line"><a name="l00138"></a><span class="lineno"> 138</span>  }</div> |
| <div class="line"><a name="l00139"></a><span class="lineno"> 139</span>  }</div> |
| <div class="line"><a name="l00140"></a><span class="lineno"> 140</span> }</div> |
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