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| <div class="title">DistanceValueSource.cs</div> </div> |
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| <a href="_distance_value_source_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.Diagnostics;</div> |
| <div class="line"><a name="l00019"></a><span class="lineno"> 19</span> <span class="keyword">using</span> Lucene.Net.Index;</div> |
| <div class="line"><a name="l00020"></a><span class="lineno"> 20</span> <span class="keyword">using</span> Lucene.Net.Search;</div> |
| <div class="line"><a name="l00021"></a><span class="lineno"> 21</span> <span class="keyword">using</span> Lucene.Net.Search.Function;</div> |
| <div class="line"><a name="l00022"></a><span class="lineno"> 22</span> <span class="keyword">using</span> Lucene.Net.Spatial.Util;</div> |
| <div class="line"><a name="l00023"></a><span class="lineno"> 23</span> <span class="keyword">using</span> Spatial4n.Core.Distance;</div> |
| <div class="line"><a name="l00024"></a><span class="lineno"> 24</span> <span class="keyword">using</span> Spatial4n.Core.Shapes;</div> |
| <div class="line"><a name="l00025"></a><span class="lineno"> 25</span> <span class="keyword">using</span> Spatial4n.Core.Shapes.Impl;</div> |
| <div class="line"><a name="l00026"></a><span class="lineno"> 26</span> </div> |
| <div class="line"><a name="l00027"></a><span class="lineno"><a class="code" href="namespace_lucene_1_1_net_1_1_spatial_1_1_vector.html"> 27</a></span> <span class="keyword">namespace </span>Lucene.Net.Spatial.Vector</div> |
| <div class="line"><a name="l00028"></a><span class="lineno"> 28</span> {</div> |
| <div class="line"><a name="l00032"></a><span class="lineno"><a class="code" href="class_lucene_1_1_net_1_1_spatial_1_1_vector_1_1_distance_value_source.html"> 32</a></span>  <span class="keyword">public</span> <span class="keyword">class </span><a class="code" href="class_lucene_1_1_net_1_1_spatial_1_1_vector_1_1_distance_value_source.html" title="An implementation of the Lucene ValueSource model that returns the distance. ">DistanceValueSource</a> : <a class="code" href="class_lucene_1_1_net_1_1_search_1_1_function_1_1_value_source.html" title="Expert: source of values for basic function queries. At its default/simplest form, values - one per doc - are used as the score of that doc. Values are instantiated as DocValues for a particular reader. ValueSource implementations differ in RAM requirements: it would always be a factor of the number of documents, but for each document the number of bytes can be 1, 2, 4, or 8.">ValueSource</a></div> |
| <div class="line"><a name="l00033"></a><span class="lineno"> 33</span>  {</div> |
| <div class="line"><a name="l00034"></a><span class="lineno"> 34</span>  <span class="keyword">private</span> readonly <a class="code" href="class_lucene_1_1_net_1_1_spatial_1_1_vector_1_1_point_vector_strategy.html" title="Simple SpatialStrategy which represents Points in two numeric DoubleFields.">PointVectorStrategy</a> strategy;</div> |
| <div class="line"><a name="l00035"></a><span class="lineno"> 35</span>  <span class="keyword">private</span> readonly Point from;</div> |
| <div class="line"><a name="l00036"></a><span class="lineno"> 36</span> </div> |
| <div class="line"><a name="l00037"></a><span class="lineno"><a class="code" href="class_lucene_1_1_net_1_1_spatial_1_1_vector_1_1_distance_value_source.html#a6357599f640a5301e3562edcb204f635"> 37</a></span>  <span class="keyword">public</span> <a class="code" href="class_lucene_1_1_net_1_1_spatial_1_1_vector_1_1_distance_value_source.html" title="An implementation of the Lucene ValueSource model that returns the distance. ">DistanceValueSource</a>(<a class="code" href="class_lucene_1_1_net_1_1_spatial_1_1_vector_1_1_point_vector_strategy.html" title="Simple SpatialStrategy which represents Points in two numeric DoubleFields.">PointVectorStrategy</a> strategy, Point from)</div> |
| <div class="line"><a name="l00038"></a><span class="lineno"> 38</span>  {</div> |
| <div class="line"><a name="l00039"></a><span class="lineno"> 39</span>  this.strategy = strategy;</div> |
| <div class="line"><a name="l00040"></a><span class="lineno"> 40</span>  this.from = from;</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> </div> |
| <div class="line"><a name="l00043"></a><span class="lineno"><a class="code" href="class_lucene_1_1_net_1_1_spatial_1_1_vector_1_1_distance_value_source_1_1_distance_doc_values.html"> 43</a></span>  <span class="keyword">public</span> <span class="keyword">class </span><a class="code" href="class_lucene_1_1_net_1_1_spatial_1_1_vector_1_1_distance_value_source_1_1_distance_doc_values.html">DistanceDocValues</a> : <a class="code" href="class_lucene_1_1_net_1_1_search_1_1_function_1_1_doc_values.html" title="Expert: represents field values as different types. Normally created via a ValueSuorce for a particul...">DocValues</a></div> |
| <div class="line"><a name="l00044"></a><span class="lineno"> 44</span>  {</div> |
| <div class="line"><a name="l00045"></a><span class="lineno"> 45</span>  <span class="keyword">private</span> readonly <a class="code" href="class_lucene_1_1_net_1_1_spatial_1_1_vector_1_1_distance_value_source.html" title="An implementation of the Lucene ValueSource model that returns the distance. ">DistanceValueSource</a> enclosingInstance;</div> |
| <div class="line"><a name="l00046"></a><span class="lineno"> 46</span> </div> |
| <div class="line"><a name="l00047"></a><span class="lineno"> 47</span>  <span class="keyword">private</span> readonly <span class="keywordtype">double</span>[] ptX, ptY;</div> |
| <div class="line"><a name="l00048"></a><span class="lineno"> 48</span>  <span class="keyword">private</span> readonly <a class="code" href="interface_lucene_1_1_net_1_1_spatial_1_1_util_1_1_i_bits.html" title="Interface for Bitset-like structures. ">IBits</a> validX, validY;</div> |
| <div class="line"><a name="l00049"></a><span class="lineno"> 49</span> </div> |
| <div class="line"><a name="l00050"></a><span class="lineno"> 50</span>  <span class="keyword">private</span> readonly Point from;</div> |
| <div class="line"><a name="l00051"></a><span class="lineno"> 51</span>  <span class="keyword">private</span> readonly DistanceCalculator calculator;</div> |
| <div class="line"><a name="l00052"></a><span class="lineno"> 52</span>  <span class="keyword">private</span> readonly <span class="keywordtype">double</span> nullValue;</div> |
| <div class="line"><a name="l00053"></a><span class="lineno"> 53</span> </div> |
| <div class="line"><a name="l00054"></a><span class="lineno"><a class="code" href="class_lucene_1_1_net_1_1_spatial_1_1_vector_1_1_distance_value_source_1_1_distance_doc_values.html#aff3158b374b31d6e68c40919908dc364"> 54</a></span>  <span class="keyword">public</span> <a class="code" href="class_lucene_1_1_net_1_1_spatial_1_1_vector_1_1_distance_value_source_1_1_distance_doc_values.html">DistanceDocValues</a>(<a class="code" href="class_lucene_1_1_net_1_1_spatial_1_1_vector_1_1_distance_value_source.html" title="An implementation of the Lucene ValueSource model that returns the distance. ">DistanceValueSource</a> enclosingInstance, <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="l00055"></a><span class="lineno"> 55</span>  {</div> |
| <div class="line"><a name="l00056"></a><span class="lineno"> 56</span>  this.enclosingInstance = enclosingInstance;</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>  ptX = <a class="code" href="struct_lucene_1_1_net_1_1_search_1_1_field_cache___fields.html">FieldCache_Fields</a>.<a class="code" href="struct_lucene_1_1_net_1_1_search_1_1_field_cache___fields.html#a062667f6223ae88b1e41d1ef8c701119" title="Expert: The cache used internally by sorting and range query classes. ">DEFAULT</a>.<a class="code" href="interface_lucene_1_1_net_1_1_search_1_1_field_cache.html#a634bda031a259ada69b8f7998b307a9e" title="Checks the internal cache for an appropriate entry, and if none is found, reads the terms in field as...">GetDoubles</a>(reader, enclosingInstance.strategy.<a class="code" href="class_lucene_1_1_net_1_1_spatial_1_1_vector_1_1_point_vector_strategy.html#a5280df8935b4393f5fb896e0dbc6f017">GetFieldNameX</a>()<span class="comment">/*, true*/</span>);</div> |
| <div class="line"><a name="l00059"></a><span class="lineno"> 59</span>  ptY = <a class="code" href="struct_lucene_1_1_net_1_1_search_1_1_field_cache___fields.html">FieldCache_Fields</a>.<a class="code" href="struct_lucene_1_1_net_1_1_search_1_1_field_cache___fields.html#a062667f6223ae88b1e41d1ef8c701119" title="Expert: The cache used internally by sorting and range query classes. ">DEFAULT</a>.<a class="code" href="interface_lucene_1_1_net_1_1_search_1_1_field_cache.html#a634bda031a259ada69b8f7998b307a9e" title="Checks the internal cache for an appropriate entry, and if none is found, reads the terms in field as...">GetDoubles</a>(reader, enclosingInstance.strategy.<a class="code" href="class_lucene_1_1_net_1_1_spatial_1_1_vector_1_1_point_vector_strategy.html#aa171f5cd350bad0bb4fa2fb772d7e50f">GetFieldNameY</a>()<span class="comment">/*, true*/</span>);</div> |
| <div class="line"><a name="l00060"></a><span class="lineno"> 60</span>  validX = <a class="code" href="struct_lucene_1_1_net_1_1_search_1_1_field_cache___fields.html">FieldCache_Fields</a>.<a class="code" href="struct_lucene_1_1_net_1_1_search_1_1_field_cache___fields.html#a062667f6223ae88b1e41d1ef8c701119" title="Expert: The cache used internally by sorting and range query classes. ">DEFAULT</a>.GetDocsWithField(reader, enclosingInstance.strategy.<a class="code" href="class_lucene_1_1_net_1_1_spatial_1_1_vector_1_1_point_vector_strategy.html#a5280df8935b4393f5fb896e0dbc6f017">GetFieldNameX</a>());</div> |
| <div class="line"><a name="l00061"></a><span class="lineno"> 61</span>  validY = <a class="code" href="struct_lucene_1_1_net_1_1_search_1_1_field_cache___fields.html">FieldCache_Fields</a>.<a class="code" href="struct_lucene_1_1_net_1_1_search_1_1_field_cache___fields.html#a062667f6223ae88b1e41d1ef8c701119" title="Expert: The cache used internally by sorting and range query classes. ">DEFAULT</a>.GetDocsWithField(reader, enclosingInstance.strategy.<a class="code" href="class_lucene_1_1_net_1_1_spatial_1_1_vector_1_1_point_vector_strategy.html#aa171f5cd350bad0bb4fa2fb772d7e50f">GetFieldNameY</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>  from = enclosingInstance.from;</div> |
| <div class="line"><a name="l00064"></a><span class="lineno"> 64</span>  calculator = enclosingInstance.strategy.GetSpatialContext().GetDistCalc();</div> |
| <div class="line"><a name="l00065"></a><span class="lineno"> 65</span>  nullValue = (enclosingInstance.strategy.GetSpatialContext().IsGeo() ? 180 : <span class="keywordtype">double</span>.MaxValue);</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> </div> |
| <div class="line"><a name="l00068"></a><span class="lineno"><a class="code" href="class_lucene_1_1_net_1_1_spatial_1_1_vector_1_1_distance_value_source_1_1_distance_doc_values.html#a26e84535d62ab40c222d7085add29453"> 68</a></span>  <span class="keyword">public</span> <span class="keyword">override</span> <span class="keywordtype">float</span> FloatVal(<span class="keywordtype">int</span> doc)</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">return</span> (<span class="keywordtype">float</span>)DoubleVal(doc);</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> </div> |
| <div class="line"><a name="l00073"></a><span class="lineno"><a class="code" href="class_lucene_1_1_net_1_1_spatial_1_1_vector_1_1_distance_value_source_1_1_distance_doc_values.html#a855cae8e74b50c0fc88009f458db6858"> 73</a></span>  <span class="keyword">public</span> <span class="keyword">override</span> <span class="keywordtype">double</span> DoubleVal(<span class="keywordtype">int</span> doc)</div> |
| <div class="line"><a name="l00074"></a><span class="lineno"> 74</span>  {</div> |
| <div class="line"><a name="l00075"></a><span class="lineno"> 75</span>  <span class="comment">// make sure it has minX and area</span></div> |
| <div class="line"><a name="l00076"></a><span class="lineno"> 76</span>  <span class="keywordflow">if</span> (validX.Get(doc))</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>  Debug.Assert(validY.Get(doc));</div> |
| <div class="line"><a name="l00079"></a><span class="lineno"> 79</span>  <span class="keywordflow">return</span> calculator.Distance(from, ptX[doc], ptY[doc]);</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">return</span> nullValue;</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"><a class="code" href="class_lucene_1_1_net_1_1_spatial_1_1_vector_1_1_distance_value_source_1_1_distance_doc_values.html#af1d48c3c05c3bd3a746b3e0897807f01"> 84</a></span>  <span class="keyword">public</span> <span class="keyword">override</span> <span class="keywordtype">string</span> ToString(<span class="keywordtype">int</span> doc)</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> enclosingInstance.Description() + <span class="stringliteral">"="</span> + FloatVal(doc);</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>  }</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_spatial_1_1_vector_1_1_distance_value_source.html#a4c5406bafc2fe5dd472f79679e96f67b"> 90</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_function_1_1_doc_values.html" title="Expert: represents field values as different types. Normally created via a ValueSuorce for a particul...">DocValues</a> GetValues(<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="l00091"></a><span class="lineno"> 91</span>  {</div> |
| <div class="line"><a name="l00092"></a><span class="lineno"> 92</span>  <span class="keywordflow">return</span> <span class="keyword">new</span> <a class="code" href="class_lucene_1_1_net_1_1_spatial_1_1_vector_1_1_distance_value_source_1_1_distance_doc_values.html">DistanceDocValues</a>(<span class="keyword">this</span>, reader);</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> </div> |
| <div class="line"><a name="l00095"></a><span class="lineno"><a class="code" href="class_lucene_1_1_net_1_1_spatial_1_1_vector_1_1_distance_value_source.html#ac5de1042822b7f36472d41b8dc9baebd"> 95</a></span>  <span class="keyword">public</span> <span class="keyword">override</span> <span class="keywordtype">string</span> Description()</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> <span class="stringliteral">"DistanceValueSource("</span> + strategy + <span class="stringliteral">", "</span> + from + <span class="stringliteral">")"</span>;</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_spatial_1_1_vector_1_1_distance_value_source.html#a12305bfb690364a8ca53059cc9f999fe"> 100</a></span>  <span class="keyword">public</span> <span class="keyword">override</span> <span class="keywordtype">bool</span> Equals(<span class="keywordtype">object</span> o)</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">if</span> (<span class="keyword">this</span> == o) <span class="keywordflow">return</span> <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>  var that = o as <a class="code" href="class_lucene_1_1_net_1_1_spatial_1_1_vector_1_1_distance_value_source.html" title="An implementation of the Lucene ValueSource model that returns the distance. ">DistanceValueSource</a>;</div> |
| <div class="line"><a name="l00105"></a><span class="lineno"> 105</span>  <span class="keywordflow">if</span> (that == null) <span class="keywordflow">return</span> <span class="keyword">false</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"> 107</span>  <span class="keywordflow">if</span> (!from.Equals(that.from)) <span class="keywordflow">return</span> <span class="keyword">false</span>;</div> |
| <div class="line"><a name="l00108"></a><span class="lineno"> 108</span>  <span class="keywordflow">if</span> (!strategy.Equals(that.strategy)) <span class="keywordflow">return</span> <span class="keyword">false</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>  <span class="keywordflow">return</span> <span class="keyword">true</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> |
| <div class="line"><a name="l00113"></a><span class="lineno"><a class="code" href="class_lucene_1_1_net_1_1_spatial_1_1_vector_1_1_distance_value_source.html#a15d2096848ce2e385a7c697abf5be615"> 113</a></span>  <span class="keyword">public</span> <span class="keyword">override</span> <span class="keywordtype">int</span> GetHashCode()</div> |
| <div class="line"><a name="l00114"></a><span class="lineno"> 114</span>  {</div> |
| <div class="line"><a name="l00115"></a><span class="lineno"> 115</span>  <span class="keywordflow">return</span> from.<a class="code" href="class_lucene_1_1_net_1_1_spatial_1_1_vector_1_1_distance_value_source.html#a15d2096848ce2e385a7c697abf5be615" title="Needed for possible caching of query results - used by ValueSourceQuery.GetHashCode().">GetHashCode</a>();</div> |
| <div class="line"><a name="l00116"></a><span class="lineno"> 116</span>  }</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> |
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