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| <a href="_sloppy_phrase_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> <span class="keyword">using</span> System.Linq;</div> |
| <div class="line"><a name="l00020"></a><span class="lineno"> 20</span> <span class="keyword">using</span> Lucene.Net.Support;</div> |
| <div class="line"><a name="l00021"></a><span class="lineno"><a class="code" href="_sloppy_phrase_scorer_8cs.html#a17a77b770c87cb0e7153982c4171bfcc"> 21</a></span> <span class="keyword">using</span> <a class="code" href="core_2_analysis_2_token_8cs.html#a17a77b770c87cb0e7153982c4171bfcc">TermPositions</a> = Lucene.Net.Index.TermPositions;</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">namespace </span>Lucene.Net.Search</div> |
| <div class="line"><a name="l00024"></a><span class="lineno"> 24</span> {</div> |
| <div class="line"><a name="l00025"></a><span class="lineno"> 25</span>  </div> |
| <div class="line"><a name="l00026"></a><span class="lineno"><a class="code" href="class_lucene_1_1_net_1_1_search_1_1_sloppy_phrase_scorer.html"> 26</a></span>  sealed <span class="keyword">class </span><a class="code" href="class_lucene_1_1_net_1_1_search_1_1_sloppy_phrase_scorer.html">SloppyPhraseScorer</a>:<a class="code" href="class_lucene_1_1_net_1_1_search_1_1_phrase_scorer.html" title="Expert: Scoring functionality for phrase queries. A document is considered matching if it contains t...">PhraseScorer</a></div> |
| <div class="line"><a name="l00027"></a><span class="lineno"> 27</span>  {</div> |
| <div class="line"><a name="l00028"></a><span class="lineno"> 28</span>  <span class="keyword">private</span> <span class="keywordtype">int</span> slop;</div> |
| <div class="line"><a name="l00029"></a><span class="lineno"> 29</span>  <span class="keyword">private</span> <a class="code" href="class_lucene_1_1_net_1_1_search_1_1_phrase_positions.html" title="Position of a term in a document that takes into account the term offset within the phrase...">PhrasePositions</a>[] repeats;</div> |
| <div class="line"><a name="l00030"></a><span class="lineno"> 30</span>  <span class="keyword">private</span> <a class="code" href="class_lucene_1_1_net_1_1_search_1_1_phrase_positions.html" title="Position of a term in a document that takes into account the term offset within the phrase...">PhrasePositions</a>[] tmpPos; <span class="comment">// for flipping repeating pps.</span></div> |
| <div class="line"><a name="l00031"></a><span class="lineno"> 31</span>  <span class="keyword">private</span> <span class="keywordtype">bool</span> checkedRepeats;</div> |
| <div class="line"><a name="l00032"></a><span class="lineno"> 32</span>  </div> |
| <div class="line"><a name="l00033"></a><span class="lineno"> 33</span>  <span class="keyword">internal</span> <a class="code" href="class_lucene_1_1_net_1_1_search_1_1_sloppy_phrase_scorer.html">SloppyPhraseScorer</a>(<a class="code" href="class_lucene_1_1_net_1_1_search_1_1_weight.html" title="Expert: Calculate query weights and build query scorers. The purpose of Weight is to ensure searching...">Weight</a> weight, <a class="code" href="core_2_analysis_2_token_8cs.html#a17a77b770c87cb0e7153982c4171bfcc">TermPositions</a>[] tps, <span class="keywordtype">int</span>[] offsets, <a class="code" href="class_lucene_1_1_net_1_1_search_1_1_similarity.html" title="Expert: Scoring API. Subclasses implement search scoring.">Similarity</a> similarity, <span class="keywordtype">int</span> slop, byte[] norms):base(weight, tps, offsets, similarity, norms)</div> |
| <div class="line"><a name="l00034"></a><span class="lineno"> 34</span>  {</div> |
| <div class="line"><a name="l00035"></a><span class="lineno"> 35</span>  this.slop = slop;</div> |
| <div class="line"><a name="l00036"></a><span class="lineno"> 36</span>  }</div> |
| <div class="line"><a name="l00037"></a><span class="lineno"> 37</span>  </div> |
| <div class="line"><a name="l00055"></a><span class="lineno"> 55</span>  <span class="keyword">protected</span> <span class="keyword">internal</span> <span class="keyword">override</span> <span class="keywordtype">float</span> PhraseFreq()</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="keywordtype">int</span> end = InitPhrasePositions();</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="keywordtype">float</span> freq = 0.0f;</div> |
| <div class="line"><a name="l00060"></a><span class="lineno"> 60</span>  <span class="keywordtype">bool</span> done = (end < 0);</div> |
| <div class="line"><a name="l00061"></a><span class="lineno"> 61</span>  <span class="keywordflow">while</span> (!done)</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>  <a class="code" href="class_lucene_1_1_net_1_1_search_1_1_phrase_positions.html" title="Position of a term in a document that takes into account the term offset within the phrase...">PhrasePositions</a> pp = pq.Pop();</div> |
| <div class="line"><a name="l00064"></a><span class="lineno"> 64</span>  <span class="keywordtype">int</span> start = pp.position;</div> |
| <div class="line"><a name="l00065"></a><span class="lineno"> 65</span>  <span class="keywordtype">int</span> next = pq.Top().position;</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="keywordtype">bool</span> tpsDiffer = <span class="keyword">true</span>;</div> |
| <div class="line"><a name="l00068"></a><span class="lineno"> 68</span>  <span class="keywordflow">for</span> (<span class="keywordtype">int</span> pos = start; pos <= next || !tpsDiffer; pos = pp.position)</div> |
| <div class="line"><a name="l00069"></a><span class="lineno"> 69</span>  {</div> |
| <div class="line"><a name="l00070"></a><span class="lineno"> 70</span>  <span class="keywordflow">if</span> (pos <= next && tpsDiffer)</div> |
| <div class="line"><a name="l00071"></a><span class="lineno"> 71</span>  start = pos; <span class="comment">// advance pp to min window</span></div> |
| <div class="line"><a name="l00072"></a><span class="lineno"> 72</span>  <span class="keywordflow">if</span> (!pp.NextPosition())</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>  done = <span class="keyword">true</span>; <span class="comment">// ran out of a term -- done</span></div> |
| <div class="line"><a name="l00075"></a><span class="lineno"> 75</span>  <span class="keywordflow">break</span>;</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>  <a class="code" href="class_lucene_1_1_net_1_1_search_1_1_phrase_positions.html" title="Position of a term in a document that takes into account the term offset within the phrase...">PhrasePositions</a> pp2 = null;</div> |
| <div class="line"><a name="l00078"></a><span class="lineno"> 78</span>  tpsDiffer = !pp.repeats || (pp2 = TermPositionsDiffer(pp)) == null;</div> |
| <div class="line"><a name="l00079"></a><span class="lineno"> 79</span>  <span class="keywordflow">if</span> (pp2 != null && pp2 != pp)</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>  pp = Flip(pp, pp2); <span class="comment">// flip pp to pp2</span></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>  }</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>  <span class="keywordtype">int</span> matchLength = end - start;</div> |
| <div class="line"><a name="l00086"></a><span class="lineno"> 86</span>  <span class="keywordflow">if</span> (matchLength <= slop)</div> |
| <div class="line"><a name="l00087"></a><span class="lineno"> 87</span>  freq += <a class="code" href="class_lucene_1_1_net_1_1_search_1_1_similarity.html" title="Expert: Scoring API. Subclasses implement search scoring.">Similarity</a>.<a class="code" href="class_lucene_1_1_net_1_1_search_1_1_similarity.html#a58d84da69da3185f4c2548d80d02fd26" title="Computes the amount of a sloppy phrase match, based on an edit distance. This value is summed for eac...">SloppyFreq</a>(matchLength); <span class="comment">// score match</span></div> |
| <div class="line"><a name="l00088"></a><span class="lineno"> 88</span>  </div> |
| <div class="line"><a name="l00089"></a><span class="lineno"> 89</span>  <span class="keywordflow">if</span> (pp.position > end)</div> |
| <div class="line"><a name="l00090"></a><span class="lineno"> 90</span>  end = pp.position;</div> |
| <div class="line"><a name="l00091"></a><span class="lineno"> 91</span>  pq.Add(pp); <span class="comment">// restore pq</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="keywordflow">return</span> freq;</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>  <span class="comment">// flip pp2 and pp in the queue: pop until finding pp2, insert back all but pp2, insert pp back.</span></div> |
| <div class="line"><a name="l00098"></a><span class="lineno"> 98</span>  <span class="comment">// assumes: pp!=pp2, pp2 in pq, pp not in pq.</span></div> |
| <div class="line"><a name="l00099"></a><span class="lineno"> 99</span>  <span class="comment">// called only when there are repeating pps.</span></div> |
| <div class="line"><a name="l00100"></a><span class="lineno"> 100</span>  <span class="keyword">private</span> <a class="code" href="class_lucene_1_1_net_1_1_search_1_1_phrase_positions.html" title="Position of a term in a document that takes into account the term offset within the phrase...">PhrasePositions</a> Flip(<a class="code" href="class_lucene_1_1_net_1_1_search_1_1_phrase_positions.html" title="Position of a term in a document that takes into account the term offset within the phrase...">PhrasePositions</a> pp, <a class="code" href="class_lucene_1_1_net_1_1_search_1_1_phrase_positions.html" title="Position of a term in a document that takes into account the term offset within the phrase...">PhrasePositions</a> pp2)</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="keywordtype">int</span> n = 0;</div> |
| <div class="line"><a name="l00103"></a><span class="lineno"> 103</span>  <a class="code" href="class_lucene_1_1_net_1_1_search_1_1_phrase_positions.html" title="Position of a term in a document that takes into account the term offset within the phrase...">PhrasePositions</a> pp3;</div> |
| <div class="line"><a name="l00104"></a><span class="lineno"> 104</span>  <span class="comment">//pop until finding pp2</span></div> |
| <div class="line"><a name="l00105"></a><span class="lineno"> 105</span>  <span class="keywordflow">while</span> ((pp3 = pq.Pop()) != pp2)</div> |
| <div class="line"><a name="l00106"></a><span class="lineno"> 106</span>  {</div> |
| <div class="line"><a name="l00107"></a><span class="lineno"> 107</span>  tmpPos[n++] = pp3;</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="comment">//insert back all but pp2</span></div> |
| <div class="line"><a name="l00110"></a><span class="lineno"> 110</span>  <span class="keywordflow">for</span> (n--; n >= 0; n--)</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>  pq.InsertWithOverflow(tmpPos[n]);</div> |
| <div class="line"><a name="l00113"></a><span class="lineno"> 113</span>  }</div> |
| <div class="line"><a name="l00114"></a><span class="lineno"> 114</span>  <span class="comment">//insert pp back</span></div> |
| <div class="line"><a name="l00115"></a><span class="lineno"> 115</span>  pq.Add(pp);</div> |
| <div class="line"><a name="l00116"></a><span class="lineno"> 116</span>  <span class="keywordflow">return</span> pp2;</div> |
| <div class="line"><a name="l00117"></a><span class="lineno"> 117</span>  }</div> |
| <div class="line"><a name="l00118"></a><span class="lineno"> 118</span>  </div> |
| <div class="line"><a name="l00133"></a><span class="lineno"> 133</span>  <span class="keyword">private</span> <span class="keywordtype">int</span> InitPhrasePositions()</div> |
| <div class="line"><a name="l00134"></a><span class="lineno"> 134</span>  {</div> |
| <div class="line"><a name="l00135"></a><span class="lineno"> 135</span>  <span class="keywordtype">int</span> end = 0;</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">// no repeats at all (most common case is also the simplest one)</span></div> |
| <div class="line"><a name="l00138"></a><span class="lineno"> 138</span>  <span class="keywordflow">if</span> (checkedRepeats && repeats == null)</div> |
| <div class="line"><a name="l00139"></a><span class="lineno"> 139</span>  {</div> |
| <div class="line"><a name="l00140"></a><span class="lineno"> 140</span>  <span class="comment">// build queue from list</span></div> |
| <div class="line"><a name="l00141"></a><span class="lineno"> 141</span>  pq.Clear();</div> |
| <div class="line"><a name="l00142"></a><span class="lineno"> 142</span>  <span class="keywordflow">for</span> (<a class="code" href="class_lucene_1_1_net_1_1_search_1_1_phrase_positions.html" title="Position of a term in a document that takes into account the term offset within the phrase...">PhrasePositions</a> pp = first; pp != null; pp = pp.next)</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>  pp.FirstPosition();</div> |
| <div class="line"><a name="l00145"></a><span class="lineno"> 145</span>  <span class="keywordflow">if</span> (pp.position > end)</div> |
| <div class="line"><a name="l00146"></a><span class="lineno"> 146</span>  end = pp.position;</div> |
| <div class="line"><a name="l00147"></a><span class="lineno"> 147</span>  pq.Add(pp); <span class="comment">// build pq from list</span></div> |
| <div class="line"><a name="l00148"></a><span class="lineno"> 148</span>  }</div> |
| <div class="line"><a name="l00149"></a><span class="lineno"> 149</span>  <span class="keywordflow">return</span> end;</div> |
| <div class="line"><a name="l00150"></a><span class="lineno"> 150</span>  }</div> |
| <div class="line"><a name="l00151"></a><span class="lineno"> 151</span>  </div> |
| <div class="line"><a name="l00152"></a><span class="lineno"> 152</span>  <span class="comment">// position the pp's</span></div> |
| <div class="line"><a name="l00153"></a><span class="lineno"> 153</span>  <span class="keywordflow">for</span> (<a class="code" href="class_lucene_1_1_net_1_1_search_1_1_phrase_positions.html" title="Position of a term in a document that takes into account the term offset within the phrase...">PhrasePositions</a> pp = first; pp != null; pp = pp.next)</div> |
| <div class="line"><a name="l00154"></a><span class="lineno"> 154</span>  pp.FirstPosition();</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>  <span class="comment">// one time initializatin for this scorer</span></div> |
| <div class="line"><a name="l00157"></a><span class="lineno"> 157</span>  <span class="keywordflow">if</span> (!checkedRepeats)</div> |
| <div class="line"><a name="l00158"></a><span class="lineno"> 158</span>  {</div> |
| <div class="line"><a name="l00159"></a><span class="lineno"> 159</span>  checkedRepeats = <span class="keyword">true</span>;</div> |
| <div class="line"><a name="l00160"></a><span class="lineno"> 160</span>  <span class="comment">// check for repeats</span></div> |
| <div class="line"><a name="l00161"></a><span class="lineno"> 161</span>  HashMap<PhrasePositions, object> m = null;</div> |
| <div class="line"><a name="l00162"></a><span class="lineno"> 162</span>  <span class="keywordflow">for</span> (<a class="code" href="class_lucene_1_1_net_1_1_search_1_1_phrase_positions.html" title="Position of a term in a document that takes into account the term offset within the phrase...">PhrasePositions</a> pp = first; pp != null; pp = pp.next)</div> |
| <div class="line"><a name="l00163"></a><span class="lineno"> 163</span>  {</div> |
| <div class="line"><a name="l00164"></a><span class="lineno"> 164</span>  <span class="keywordtype">int</span> tpPos = pp.position + pp.offset;</div> |
| <div class="line"><a name="l00165"></a><span class="lineno"> 165</span>  <span class="keywordflow">for</span> (<a class="code" href="class_lucene_1_1_net_1_1_search_1_1_phrase_positions.html" title="Position of a term in a document that takes into account the term offset within the phrase...">PhrasePositions</a> pp2 = pp.next; pp2 != null; pp2 = pp2.next)</div> |
| <div class="line"><a name="l00166"></a><span class="lineno"> 166</span>  {</div> |
| <div class="line"><a name="l00167"></a><span class="lineno"> 167</span>  <span class="keywordtype">int</span> tpPos2 = pp2.position + pp2.offset;</div> |
| <div class="line"><a name="l00168"></a><span class="lineno"> 168</span>  <span class="keywordflow">if</span> (tpPos2 == tpPos)</div> |
| <div class="line"><a name="l00169"></a><span class="lineno"> 169</span>  {</div> |
| <div class="line"><a name="l00170"></a><span class="lineno"> 170</span>  <span class="keywordflow">if</span> (m == null)</div> |
| <div class="line"><a name="l00171"></a><span class="lineno"> 171</span>  {</div> |
| <div class="line"><a name="l00172"></a><span class="lineno"> 172</span>  m = <span class="keyword">new</span> HashMap<PhrasePositions, object>();</div> |
| <div class="line"><a name="l00173"></a><span class="lineno"> 173</span>  }</div> |
| <div class="line"><a name="l00174"></a><span class="lineno"> 174</span>  pp.repeats = <span class="keyword">true</span>;</div> |
| <div class="line"><a name="l00175"></a><span class="lineno"> 175</span>  pp2.repeats = <span class="keyword">true</span>;</div> |
| <div class="line"><a name="l00176"></a><span class="lineno"> 176</span>  m[pp] = null;</div> |
| <div class="line"><a name="l00177"></a><span class="lineno"> 177</span>  m[pp2] = null;</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>  }</div> |
| <div class="line"><a name="l00180"></a><span class="lineno"> 180</span>  }</div> |
| <div class="line"><a name="l00181"></a><span class="lineno"> 181</span>  <span class="keywordflow">if</span> (m != null)</div> |
| <div class="line"><a name="l00182"></a><span class="lineno"> 182</span>  {</div> |
| <div class="line"><a name="l00183"></a><span class="lineno"> 183</span>  repeats = m.Keys.ToArray();</div> |
| <div class="line"><a name="l00184"></a><span class="lineno"> 184</span>  }</div> |
| <div class="line"><a name="l00185"></a><span class="lineno"> 185</span>  }</div> |
| <div class="line"><a name="l00186"></a><span class="lineno"> 186</span>  </div> |
| <div class="line"><a name="l00187"></a><span class="lineno"> 187</span>  <span class="comment">// with repeats must advance some repeating pp's so they all start with differing tp's </span></div> |
| <div class="line"><a name="l00188"></a><span class="lineno"> 188</span>  <span class="keywordflow">if</span> (repeats != null)</div> |
| <div class="line"><a name="l00189"></a><span class="lineno"> 189</span>  {</div> |
| <div class="line"><a name="l00190"></a><span class="lineno"> 190</span>  <span class="keywordflow">for</span> (<span class="keywordtype">int</span> i = 0; i < repeats.Length; i++)</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>  <a class="code" href="class_lucene_1_1_net_1_1_search_1_1_phrase_positions.html" title="Position of a term in a document that takes into account the term offset within the phrase...">PhrasePositions</a> pp = repeats[i];</div> |
| <div class="line"><a name="l00193"></a><span class="lineno"> 193</span>  <a class="code" href="class_lucene_1_1_net_1_1_search_1_1_phrase_positions.html" title="Position of a term in a document that takes into account the term offset within the phrase...">PhrasePositions</a> pp2;</div> |
| <div class="line"><a name="l00194"></a><span class="lineno"> 194</span>  <span class="keywordflow">while</span> ((pp2 = TermPositionsDiffer(pp)) != null)</div> |
| <div class="line"><a name="l00195"></a><span class="lineno"> 195</span>  {</div> |
| <div class="line"><a name="l00196"></a><span class="lineno"> 196</span>  <span class="keywordflow">if</span> (!pp2.NextPosition())</div> |
| <div class="line"><a name="l00197"></a><span class="lineno"> 197</span>  <span class="comment">// out of pps that do not differ, advance the pp with higher offset </span></div> |
| <div class="line"><a name="l00198"></a><span class="lineno"> 198</span>  <span class="keywordflow">return</span> - 1; <span class="comment">// ran out of a term -- done </span></div> |
| <div class="line"><a name="l00199"></a><span class="lineno"> 199</span>  }</div> |
| <div class="line"><a name="l00200"></a><span class="lineno"> 200</span>  }</div> |
| <div class="line"><a name="l00201"></a><span class="lineno"> 201</span>  }</div> |
| <div class="line"><a name="l00202"></a><span class="lineno"> 202</span>  </div> |
| <div class="line"><a name="l00203"></a><span class="lineno"> 203</span>  <span class="comment">// build queue from list</span></div> |
| <div class="line"><a name="l00204"></a><span class="lineno"> 204</span>  pq.Clear();</div> |
| <div class="line"><a name="l00205"></a><span class="lineno"> 205</span>  <span class="keywordflow">for</span> (<a class="code" href="class_lucene_1_1_net_1_1_search_1_1_phrase_positions.html" title="Position of a term in a document that takes into account the term offset within the phrase...">PhrasePositions</a> pp = first; pp != null; pp = pp.next)</div> |
| <div class="line"><a name="l00206"></a><span class="lineno"> 206</span>  {</div> |
| <div class="line"><a name="l00207"></a><span class="lineno"> 207</span>  <span class="keywordflow">if</span> (pp.position > end)</div> |
| <div class="line"><a name="l00208"></a><span class="lineno"> 208</span>  end = pp.position;</div> |
| <div class="line"><a name="l00209"></a><span class="lineno"> 209</span>  pq.Add(pp); <span class="comment">// build pq from list</span></div> |
| <div class="line"><a name="l00210"></a><span class="lineno"> 210</span>  }</div> |
| <div class="line"><a name="l00211"></a><span class="lineno"> 211</span>  </div> |
| <div class="line"><a name="l00212"></a><span class="lineno"> 212</span>  <span class="keywordflow">if</span> (repeats != null)</div> |
| <div class="line"><a name="l00213"></a><span class="lineno"> 213</span>  {</div> |
| <div class="line"><a name="l00214"></a><span class="lineno"> 214</span>  tmpPos = <span class="keyword">new</span> <a class="code" href="class_lucene_1_1_net_1_1_search_1_1_phrase_positions.html" title="Position of a term in a document that takes into account the term offset within the phrase...">PhrasePositions</a>[pq.Size()];</div> |
| <div class="line"><a name="l00215"></a><span class="lineno"> 215</span>  }</div> |
| <div class="line"><a name="l00216"></a><span class="lineno"> 216</span>  <span class="keywordflow">return</span> end;</div> |
| <div class="line"><a name="l00217"></a><span class="lineno"> 217</span>  }</div> |
| <div class="line"><a name="l00218"></a><span class="lineno"> 218</span>  </div> |
| <div class="line"><a name="l00225"></a><span class="lineno"> 225</span>  <span class="keyword">private</span> <a class="code" href="class_lucene_1_1_net_1_1_search_1_1_phrase_positions.html" title="Position of a term in a document that takes into account the term offset within the phrase...">PhrasePositions</a> TermPositionsDiffer(<a class="code" href="class_lucene_1_1_net_1_1_search_1_1_phrase_positions.html" title="Position of a term in a document that takes into account the term offset within the phrase...">PhrasePositions</a> pp)</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="comment">// efficiency note: a more efficient implementation could keep a map between repeating </span></div> |
| <div class="line"><a name="l00228"></a><span class="lineno"> 228</span>  <span class="comment">// pp's, so that if pp1a, pp1b, pp1c are repeats term1, and pp2a, pp2b are repeats </span></div> |
| <div class="line"><a name="l00229"></a><span class="lineno"> 229</span>  <span class="comment">// of term2, pp2a would only be checked against pp2b but not against pp1a, pp1b, pp1c. </span></div> |
| <div class="line"><a name="l00230"></a><span class="lineno"> 230</span>  <span class="comment">// However this would complicate code, for a rather rare case, so choice is to compromise here.</span></div> |
| <div class="line"><a name="l00231"></a><span class="lineno"> 231</span>  <span class="keywordtype">int</span> tpPos = pp.position + pp.offset;</div> |
| <div class="line"><a name="l00232"></a><span class="lineno"> 232</span>  <span class="keywordflow">for</span> (<span class="keywordtype">int</span> i = 0; i < repeats.Length; i++)</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>  <a class="code" href="class_lucene_1_1_net_1_1_search_1_1_phrase_positions.html" title="Position of a term in a document that takes into account the term offset within the phrase...">PhrasePositions</a> pp2 = repeats[i];</div> |
| <div class="line"><a name="l00235"></a><span class="lineno"> 235</span>  <span class="keywordflow">if</span> (pp2 == pp)</div> |
| <div class="line"><a name="l00236"></a><span class="lineno"> 236</span>  <span class="keywordflow">continue</span>;</div> |
| <div class="line"><a name="l00237"></a><span class="lineno"> 237</span>  <span class="keywordtype">int</span> tpPos2 = pp2.position + pp2.offset;</div> |
| <div class="line"><a name="l00238"></a><span class="lineno"> 238</span>  <span class="keywordflow">if</span> (tpPos2 == tpPos)</div> |
| <div class="line"><a name="l00239"></a><span class="lineno"> 239</span>  <span class="keywordflow">return</span> pp.offset > pp2.offset?pp:pp2; <span class="comment">// do not differ: return the one with higher offset.</span></div> |
| <div class="line"><a name="l00240"></a><span class="lineno"> 240</span>  }</div> |
| <div class="line"><a name="l00241"></a><span class="lineno"> 241</span>  <span class="keywordflow">return</span> null;</div> |
| <div class="line"><a name="l00242"></a><span class="lineno"> 242</span>  }</div> |
| <div class="line"><a name="l00243"></a><span class="lineno"> 243</span>  }</div> |
| <div class="line"><a name="l00244"></a><span class="lineno"> 244</span> }</div> |
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