| <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> |
| <html xmlns="http://www.w3.org/1999/xhtml"> |
| <head> |
| <meta http-equiv="Content-Type" content="text/xhtml;charset=UTF-8"/> |
| <meta http-equiv="X-UA-Compatible" content="IE=9"/> |
| <meta name="generator" content="Doxygen 1.8.3"/> |
| <title>Lucene.Net: core/Search/Spans/SpanWeight.cs Source File</title> |
| <link href="tabs.css" rel="stylesheet" type="text/css"/> |
| <script type="text/javascript" src="jquery.js"></script> |
| <script type="text/javascript" src="dynsections.js"></script> |
| <link href="search/search.css" rel="stylesheet" type="text/css"/> |
| <script type="text/javascript" src="search/search.js"></script> |
| <script type="text/javascript"> |
| $(document).ready(function() { searchBox.OnSelectItem(0); }); |
| </script> |
| <link href="doxygen.css" rel="stylesheet" type="text/css" /> |
| </head> |
| <body> |
| <div id="top"><!-- do not remove this div, it is closed by doxygen! --> |
| <div id="titlearea"> |
| <table cellspacing="0" cellpadding="0"> |
| <tbody> |
| <tr style="height: 56px;"> |
| <td id="projectlogo"><img alt="Logo" src="lucene-net-icon-128x128.png"/></td> |
| <td style="padding-left: 0.5em;"> |
| <div id="projectname">Lucene.Net |
|  <span id="projectnumber">3.0.3</span> |
| </div> |
| <div id="projectbrief">Lucene.Net is a .NET port of the Java Lucene Indexing Library</div> |
| </td> |
| </tr> |
| </tbody> |
| </table> |
| </div> |
| <!-- end header part --> |
| <!-- Generated by Doxygen 1.8.3 --> |
| <script type="text/javascript"> |
| var searchBox = new SearchBox("searchBox", "search",false,'Search'); |
| </script> |
| <div id="navrow1" class="tabs"> |
| <ul class="tablist"> |
| <li><a href="Index.html"><span>Main Page</span></a></li> |
| <li><a href="namespaces.html"><span>Packages</span></a></li> |
| <li><a href="annotated.html"><span>Classes</span></a></li> |
| <li class="current"><a href="files.html"><span>Files</span></a></li> |
| <li> |
| <div id="MSearchBox" class="MSearchBoxInactive"> |
| <span class="left"> |
| <img id="MSearchSelect" src="search/mag_sel.png" |
| onmouseover="return searchBox.OnSearchSelectShow()" |
| onmouseout="return searchBox.OnSearchSelectHide()" |
| alt=""/> |
| <input type="text" id="MSearchField" value="Search" accesskey="S" |
| onfocus="searchBox.OnSearchFieldFocus(true)" |
| onblur="searchBox.OnSearchFieldFocus(false)" |
| onkeyup="searchBox.OnSearchFieldChange(event)"/> |
| </span><span class="right"> |
| <a id="MSearchClose" href="javascript:searchBox.CloseResultsWindow()"><img id="MSearchCloseImg" border="0" src="search/close.png" alt=""/></a> |
| </span> |
| </div> |
| </li> |
| </ul> |
| </div> |
| <div id="navrow2" class="tabs2"> |
| <ul class="tablist"> |
| <li><a href="files.html"><span>File List</span></a></li> |
| <li><a href="globals.html"><span>File Members</span></a></li> |
| </ul> |
| </div> |
| <!-- window showing the filter options --> |
| <div id="MSearchSelectWindow" |
| onmouseover="return searchBox.OnSearchSelectShow()" |
| onmouseout="return searchBox.OnSearchSelectHide()" |
| onkeydown="return searchBox.OnSearchSelectKey(event)"> |
| <a class="SelectItem" href="javascript:void(0)" onclick="searchBox.OnSelectItem(0)"><span class="SelectionMark"> </span>All</a><a class="SelectItem" href="javascript:void(0)" onclick="searchBox.OnSelectItem(1)"><span class="SelectionMark"> </span>Classes</a><a class="SelectItem" href="javascript:void(0)" onclick="searchBox.OnSelectItem(2)"><span class="SelectionMark"> </span>Namespaces</a><a class="SelectItem" href="javascript:void(0)" onclick="searchBox.OnSelectItem(3)"><span class="SelectionMark"> </span>Files</a><a class="SelectItem" href="javascript:void(0)" onclick="searchBox.OnSelectItem(4)"><span class="SelectionMark"> </span>Functions</a><a class="SelectItem" href="javascript:void(0)" onclick="searchBox.OnSelectItem(5)"><span class="SelectionMark"> </span>Variables</a><a class="SelectItem" href="javascript:void(0)" onclick="searchBox.OnSelectItem(6)"><span class="SelectionMark"> </span>Typedefs</a><a class="SelectItem" href="javascript:void(0)" onclick="searchBox.OnSelectItem(7)"><span class="SelectionMark"> </span>Enumerations</a><a class="SelectItem" href="javascript:void(0)" onclick="searchBox.OnSelectItem(8)"><span class="SelectionMark"> </span>Properties</a></div> |
| |
| <!-- iframe showing the search results (closed by default) --> |
| <div id="MSearchResultsWindow"> |
| <iframe src="javascript:void(0)" frameborder="0" |
| name="MSearchResults" id="MSearchResults"> |
| </iframe> |
| </div> |
| |
| <div id="nav-path" class="navpath"> |
| <ul> |
| <li class="navelem"><a class="el" href="dir_1efe588324fc547683bba4a3f1bac847.html">core</a></li><li class="navelem"><a class="el" href="dir_56f9b3c34a852b92179da152ee78b823.html">Search</a></li><li class="navelem"><a class="el" href="dir_969a26ab3e94e3ca0984802fc6c3fa57.html">Spans</a></li> </ul> |
| </div> |
| </div><!-- top --> |
| <div class="header"> |
| <div class="headertitle"> |
| <div class="title">SpanWeight.cs</div> </div> |
| </div><!--header--> |
| <div class="contents"> |
| <a href="_span_weight_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> Lucene.Net.Index;</div> |
| <div class="line"><a name="l00021"></a><span class="lineno"><a class="code" href="_span_weight_8cs.html#a2a6914ea10bbe06764856e29e5674e66"> 21</a></span> <span class="keyword">using</span> <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> = Lucene.Net.Index.IndexReader;</div> |
| <div class="line"><a name="l00022"></a><span class="lineno"> 22</span> <span class="keyword">using</span> Lucene.Net.Search;</div> |
| <div class="line"><a name="l00023"></a><span class="lineno"><a class="code" href="_span_weight_8cs.html#a6210369909e0fef392bc63926b45beaf"> 23</a></span> <span class="keyword">using</span> <a class="code" href="_phrase_query_8cs.html#a6210369909e0fef392bc63926b45beaf">IDFExplanation</a> = Lucene.Net.Search.Explanation.IDFExplanation;</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> <span class="keyword">namespace </span>Lucene.Net.Search.Spans</div> |
| <div class="line"><a name="l00026"></a><span class="lineno"> 26</span> {</div> |
| <div class="line"><a name="l00027"></a><span class="lineno"> 27</span>  </div> |
| <div class="line"><a name="l00029"></a><span class="lineno"> 29</span>  [Serializable]</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_spans_1_1_span_weight.html"> 30</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_spans_1_1_span_weight.html" title="Expert-only. Public for use by other weight implementations">SpanWeight</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></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">protected</span> <span class="keyword">internal</span> <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;</div> |
| <div class="line"><a name="l00033"></a><span class="lineno"> 33</span>  <span class="keyword">protected</span> <span class="keyword">internal</span> <span class="keywordtype">float</span> value_Renamed;</div> |
| <div class="line"><a name="l00034"></a><span class="lineno"> 34</span>  <span class="keyword">protected</span> <span class="keyword">internal</span> <span class="keywordtype">float</span> idf;</div> |
| <div class="line"><a name="l00035"></a><span class="lineno"> 35</span>  <span class="keyword">protected</span> <span class="keyword">internal</span> <span class="keywordtype">float</span> queryNorm;</div> |
| <div class="line"><a name="l00036"></a><span class="lineno"> 36</span>  <span class="keyword">protected</span> <span class="keyword">internal</span> <span class="keywordtype">float</span> queryWeight;</div> |
| <div class="line"><a name="l00037"></a><span class="lineno"> 37</span> </div> |
| <div class="line"><a name="l00038"></a><span class="lineno"> 38</span>  <span class="keyword">protected</span> <span class="keyword">internal</span> ISet<Term> terms;</div> |
| <div class="line"><a name="l00039"></a><span class="lineno"> 39</span>  <span class="keyword">protected</span> <span class="keyword">internal</span> <a class="code" href="class_lucene_1_1_net_1_1_search_1_1_spans_1_1_span_query.html" title="Base class for span-based queries. ">SpanQuery</a> internalQuery;</div> |
| <div class="line"><a name="l00040"></a><span class="lineno"> 40</span>  <span class="keyword">private</span> <a class="code" href="_phrase_query_8cs.html#a6210369909e0fef392bc63926b45beaf">IDFExplanation</a> idfExp;</div> |
| <div class="line"><a name="l00041"></a><span class="lineno"> 41</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_spans_1_1_span_weight.html#a88c974b7d744936d0a229b5f67467767"> 42</a></span>  <span class="keyword">public</span> <a class="code" href="_payload_near_query_8cs.html#ad47aa18db8d4f74566061d33646c955e">SpanWeight</a>(<a class="code" href="class_lucene_1_1_net_1_1_search_1_1_spans_1_1_span_query.html" title="Base class for span-based queries. ">SpanQuery</a> query, <a class="code" href="class_lucene_1_1_net_1_1_search_1_1_searcher.html" title="An abstract base class for search implementations. Implements the main search methods.">Searcher</a> searcher)</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>  this.similarity = query.<a class="code" href="class_lucene_1_1_net_1_1_search_1_1_query.html#a61ccd3cc51e811a537f7929e98302fd3" title="Expert: Returns the Similarity implementation to be used for this query. Subclasses may override this...">GetSimilarity</a>(searcher);</div> |
| <div class="line"><a name="l00045"></a><span class="lineno"> 45</span>  this.internalQuery = query;</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>  terms = Lucene.Net.Support.Compatibility.SetFactory.CreateHashSet<<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>>();</div> |
| <div class="line"><a name="l00048"></a><span class="lineno"> 48</span>  query.<a class="code" href="class_lucene_1_1_net_1_1_search_1_1_query.html#a9f47bf807320ce75a9096c983ab358d7" title="Expert: adds all terms occuring in this query to the terms set. Only works if this query is in its re...">ExtractTerms</a>(terms);</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>  idfExp = similarity.IdfExplain(terms, searcher);</div> |
| <div class="line"><a name="l00051"></a><span class="lineno"> 51</span>  idf = idfExp.Idf;</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> </div> |
| <div class="line"><a name="l00054"></a><span class="lineno"> 54</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_query.html" title="The abstract base class for queries. Instantiable subclasses are: TermQuery MultiTermQuery BooleanQ...">Query</a> <a class="code" href="class_lucene_1_1_net_1_1_search_1_1_query.html" title="The abstract base class for queries. Instantiable subclasses are: TermQuery MultiTermQuery BooleanQ...">Query</a></div> |
| <div class="line"><a name="l00055"></a><span class="lineno"><a class="code" href="class_lucene_1_1_net_1_1_search_1_1_spans_1_1_span_weight.html#a2b30de71915f92d8ba5f0e6cd666c02a"> 55</a></span>  {</div> |
| <div class="line"><a name="l00056"></a><span class="lineno"> 56</span>  <span class="keyword">get</span> { <span class="keywordflow">return</span> internalQuery; }</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> </div> |
| <div class="line"><a name="l00059"></a><span class="lineno"> 59</span>  <span class="keyword">public</span> <span class="keyword">override</span> <span class="keywordtype">float</span> Value</div> |
| <div class="line"><a name="l00060"></a><span class="lineno"><a class="code" href="class_lucene_1_1_net_1_1_search_1_1_spans_1_1_span_weight.html#ae27ba3bc4934f2d10de6b9c0fd77bdc7"> 60</a></span>  {</div> |
| <div class="line"><a name="l00061"></a><span class="lineno"> 61</span>  <span class="keyword">get</span> { <span class="keywordflow">return</span> value_Renamed; }</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> </div> |
| <div class="line"><a name="l00064"></a><span class="lineno"><a class="code" href="class_lucene_1_1_net_1_1_search_1_1_spans_1_1_span_weight.html#aa8fe1b261bc9ba61ece412ad37b62af3"> 64</a></span>  <span class="keyword">public</span> <span class="keyword">override</span> <span class="keywordtype">float</span> GetSumOfSquaredWeights()</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>  queryWeight = idf*internalQuery.<a class="code" href="class_lucene_1_1_net_1_1_search_1_1_query.html#a2a58b600e864bed65cc21815fffa0218" title="Gets or sets the boost for this query clause to b. Documents matching this clause will (in addition t...">Boost</a>; <span class="comment">// compute query weight</span></div> |
| <div class="line"><a name="l00067"></a><span class="lineno"> 67</span>  <span class="keywordflow">return</span> queryWeight*queryWeight; <span class="comment">// square it</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> </div> |
| <div class="line"><a name="l00070"></a><span class="lineno"><a class="code" href="class_lucene_1_1_net_1_1_search_1_1_spans_1_1_span_weight.html#ab834fae835530448639f6edd09fa80f3"> 70</a></span>  <span class="keyword">public</span> <span class="keyword">override</span> <span class="keywordtype">void</span> Normalize(<span class="keywordtype">float</span> queryNorm)</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>  this.queryNorm = queryNorm;</div> |
| <div class="line"><a name="l00073"></a><span class="lineno"> 73</span>  queryWeight *= queryNorm; <span class="comment">// normalize query weight</span></div> |
| <div class="line"><a name="l00074"></a><span class="lineno"> 74</span>  value_Renamed = queryWeight * idf; <span class="comment">// idf for document</span></div> |
| <div class="line"><a name="l00075"></a><span class="lineno"> 75</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"><a class="code" href="class_lucene_1_1_net_1_1_search_1_1_spans_1_1_span_weight.html#acf28e7998b1ef802e2cfd8e61c261a35"> 77</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_scorer.html" title="Expert: Common scoring functionality for different types of queries.">Scorer</a> <a class="code" href="_documents_writer_8cs.html#a83f1a9bf052559c9fc4b5dc2c3d490f1">Scorer</a>(<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, <span class="keywordtype">bool</span> scoreDocsInOrder, <span class="keywordtype">bool</span> topScorer)</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">new</span> <a class="code" href="_payload_near_query_8cs.html#afc2d1c993e3e1aaca2d065feac3a558d">SpanScorer</a>(internalQuery.GetSpans(reader), <span class="keyword">this</span>, similarity, reader.<a class="code" href="class_lucene_1_1_net_1_1_index_1_1_index_reader.html#af4de7403582385c9c14de9a58fca523c" title="Returns the byte-encoded normalization factor for the named field of every document. This is used by the search code to score documents. ">Norms</a>(internalQuery.Field));</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>  </div> |
| <div class="line"><a name="l00082"></a><span class="lineno"><a class="code" href="class_lucene_1_1_net_1_1_search_1_1_spans_1_1_span_weight.html#a65e4d9aa5279522c3c0a8486e544bd27"> 82</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_explanation.html" title="Expert: Describes the score computation for document and query. ">Explanation</a> Explain(<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, <span class="keywordtype">int</span> doc)</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>  <a class="code" href="class_lucene_1_1_net_1_1_search_1_1_complex_explanation.html" title="Expert: Describes the score computation for document and query, and can distinguish a match independe...">ComplexExplanation</a> result = <span class="keyword">new</span> <a class="code" href="_custom_score_query_8cs.html#aaff36a95cdad7bc1affaff3241d83f90">ComplexExplanation</a>();</div> |
| <div class="line"><a name="l00086"></a><span class="lineno"> 86</span>  result.<a class="code" href="class_lucene_1_1_net_1_1_search_1_1_explanation.html#a6ea561368bd5826af73342c3fe2e5eb5" title="A description of this explanation node. ">Description</a> = <span class="stringliteral">"weight("</span> + <a class="code" href="class_lucene_1_1_net_1_1_search_1_1_query.html" title="The abstract base class for queries. Instantiable subclasses are: TermQuery MultiTermQuery BooleanQ...">Query</a> + <span class="stringliteral">" in "</span> + doc + <span class="stringliteral">"), product of:"</span>;</div> |
| <div class="line"><a name="l00087"></a><span class="lineno"> 87</span>  System.String field = ((<a class="code" href="_abstract_field_8cs.html#acc785bedc86fa99fa13c32eaf059baab">SpanQuery</a>) <a class="code" href="class_lucene_1_1_net_1_1_search_1_1_query.html" title="The abstract base class for queries. Instantiable subclasses are: TermQuery MultiTermQuery BooleanQ...">Query</a>).Field;</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>  <a class="code" href="class_lucene_1_1_net_1_1_search_1_1_explanation.html" title="Expert: Describes the score computation for document and query. ">Explanation</a> idfExpl = <span class="keyword">new</span> <a class="code" href="_custom_score_query_8cs.html#aea5b3dcb7c8a52294feb57dcaa878033">Explanation</a>(idf, <span class="stringliteral">"idf("</span> + field + <span class="stringliteral">": "</span> + idfExp.Explain() + <span class="stringliteral">")"</span>);</div> |
| <div class="line"><a name="l00090"></a><span class="lineno"> 90</span>  </div> |
| <div class="line"><a name="l00091"></a><span class="lineno"> 91</span>  <span class="comment">// explain query weight</span></div> |
| <div class="line"><a name="l00092"></a><span class="lineno"> 92</span>  <a class="code" href="class_lucene_1_1_net_1_1_search_1_1_explanation.html" title="Expert: Describes the score computation for document and query. ">Explanation</a> queryExpl = <span class="keyword">new</span> <a class="code" href="_custom_score_query_8cs.html#aea5b3dcb7c8a52294feb57dcaa878033">Explanation</a>();</div> |
| <div class="line"><a name="l00093"></a><span class="lineno"> 93</span>  queryExpl.Description = <span class="stringliteral">"queryWeight("</span> + <a class="code" href="class_lucene_1_1_net_1_1_search_1_1_query.html" title="The abstract base class for queries. Instantiable subclasses are: TermQuery MultiTermQuery BooleanQ...">Query</a> + <span class="stringliteral">"), product of:"</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"> 95</span>  <a class="code" href="class_lucene_1_1_net_1_1_search_1_1_explanation.html" title="Expert: Describes the score computation for document and query. ">Explanation</a> boostExpl = <span class="keyword">new</span> <a class="code" href="_custom_score_query_8cs.html#aea5b3dcb7c8a52294feb57dcaa878033">Explanation</a>(<a class="code" href="class_lucene_1_1_net_1_1_search_1_1_query.html" title="The abstract base class for queries. Instantiable subclasses are: TermQuery MultiTermQuery BooleanQ...">Query</a>.<a class="code" href="class_lucene_1_1_net_1_1_search_1_1_query.html#a2a58b600e864bed65cc21815fffa0218" title="Gets or sets the boost for this query clause to b. Documents matching this clause will (in addition t...">Boost</a>, <span class="stringliteral">"boost"</span>);</div> |
| <div class="line"><a name="l00096"></a><span class="lineno"> 96</span>  <span class="keywordflow">if</span> (<a class="code" href="class_lucene_1_1_net_1_1_search_1_1_query.html" title="The abstract base class for queries. Instantiable subclasses are: TermQuery MultiTermQuery BooleanQ...">Query</a>.<a class="code" href="class_lucene_1_1_net_1_1_search_1_1_query.html#a2a58b600e864bed65cc21815fffa0218" title="Gets or sets the boost for this query clause to b. Documents matching this clause will (in addition t...">Boost</a> != 1.0f)</div> |
| <div class="line"><a name="l00097"></a><span class="lineno"> 97</span>  queryExpl.AddDetail(boostExpl);</div> |
| <div class="line"><a name="l00098"></a><span class="lineno"> 98</span>  queryExpl.AddDetail(idfExpl);</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>  <a class="code" href="class_lucene_1_1_net_1_1_search_1_1_explanation.html" title="Expert: Describes the score computation for document and query. ">Explanation</a> queryNormExpl = <span class="keyword">new</span> <a class="code" href="_custom_score_query_8cs.html#aea5b3dcb7c8a52294feb57dcaa878033">Explanation</a>(queryNorm, <span class="stringliteral">"queryNorm"</span>);</div> |
| <div class="line"><a name="l00101"></a><span class="lineno"> 101</span>  queryExpl.AddDetail(queryNormExpl);</div> |
| <div class="line"><a name="l00102"></a><span class="lineno"> 102</span>  </div> |
| <div class="line"><a name="l00103"></a><span class="lineno"> 103</span>  queryExpl.Value = boostExpl.<a class="code" href="class_lucene_1_1_net_1_1_search_1_1_explanation.html#ae7933fa7759da03b13211cf2804c40af" title="The value assigned to this explanation node. ">Value</a> * idfExpl.<a class="code" href="class_lucene_1_1_net_1_1_search_1_1_explanation.html#ae7933fa7759da03b13211cf2804c40af" title="The value assigned to this explanation node. ">Value</a> * queryNormExpl.<a class="code" href="class_lucene_1_1_net_1_1_search_1_1_explanation.html#ae7933fa7759da03b13211cf2804c40af" title="The value assigned to this explanation node. ">Value</a>;</div> |
| <div class="line"><a name="l00104"></a><span class="lineno"> 104</span>  </div> |
| <div class="line"><a name="l00105"></a><span class="lineno"> 105</span>  result.<a class="code" href="class_lucene_1_1_net_1_1_search_1_1_explanation.html#a61e84f9a277600115dbc3457ca276abd" title="Adds a sub-node to this explanation node. ">AddDetail</a>(queryExpl);</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="comment">// explain field weight</span></div> |
| <div class="line"><a name="l00108"></a><span class="lineno"> 108</span>  <a class="code" href="class_lucene_1_1_net_1_1_search_1_1_complex_explanation.html" title="Expert: Describes the score computation for document and query, and can distinguish a match independe...">ComplexExplanation</a> fieldExpl = <span class="keyword">new</span> <a class="code" href="_custom_score_query_8cs.html#aaff36a95cdad7bc1affaff3241d83f90">ComplexExplanation</a>();</div> |
| <div class="line"><a name="l00109"></a><span class="lineno"> 109</span>  fieldExpl.<a class="code" href="class_lucene_1_1_net_1_1_search_1_1_explanation.html#a6ea561368bd5826af73342c3fe2e5eb5" title="A description of this explanation node. ">Description</a> = <span class="stringliteral">"fieldWeight("</span> + field + <span class="stringliteral">":"</span> + internalQuery.ToString(field) + <span class="stringliteral">" in "</span> + doc + <span class="stringliteral">"), product of:"</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>  <a class="code" href="class_lucene_1_1_net_1_1_search_1_1_explanation.html" title="Expert: Describes the score computation for document and query. ">Explanation</a> tfExpl = ((<a class="code" href="_payload_near_query_8cs.html#afc2d1c993e3e1aaca2d065feac3a558d">SpanScorer</a>)<a class="code" href="_documents_writer_8cs.html#a83f1a9bf052559c9fc4b5dc2c3d490f1">Scorer</a>(reader, <span class="keyword">true</span>, <span class="keyword">false</span>)).Explain(doc);</div> |
| <div class="line"><a name="l00112"></a><span class="lineno"> 112</span>  fieldExpl.<a class="code" href="class_lucene_1_1_net_1_1_search_1_1_explanation.html#a61e84f9a277600115dbc3457ca276abd" title="Adds a sub-node to this explanation node. ">AddDetail</a>(tfExpl);</div> |
| <div class="line"><a name="l00113"></a><span class="lineno"> 113</span>  fieldExpl.<a class="code" href="class_lucene_1_1_net_1_1_search_1_1_explanation.html#a61e84f9a277600115dbc3457ca276abd" title="Adds a sub-node to this explanation node. ">AddDetail</a>(idfExpl);</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>  <a class="code" href="class_lucene_1_1_net_1_1_search_1_1_explanation.html" title="Expert: Describes the score computation for document and query. ">Explanation</a> fieldNormExpl = <span class="keyword">new</span> <a class="code" href="_custom_score_query_8cs.html#aea5b3dcb7c8a52294feb57dcaa878033">Explanation</a>();</div> |
| <div class="line"><a name="l00116"></a><span class="lineno"> 116</span>  byte[] fieldNorms = reader.<a class="code" href="class_lucene_1_1_net_1_1_index_1_1_index_reader.html#af4de7403582385c9c14de9a58fca523c" title="Returns the byte-encoded normalization factor for the named field of every document. This is used by the search code to score documents. ">Norms</a>(field);</div> |
| <div class="line"><a name="l00117"></a><span class="lineno"> 117</span>  <span class="keywordtype">float</span> fieldNorm = fieldNorms != null?<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#acd2a4329c78ea23877a82c425fe76188" title="Decodes a normalization factor stored in an index.">DecodeNorm</a>(fieldNorms[doc]):1.0f;</div> |
| <div class="line"><a name="l00118"></a><span class="lineno"> 118</span>  fieldNormExpl.<a class="code" href="class_lucene_1_1_net_1_1_search_1_1_explanation.html#ae7933fa7759da03b13211cf2804c40af" title="The value assigned to this explanation node. ">Value</a> = fieldNorm;</div> |
| <div class="line"><a name="l00119"></a><span class="lineno"> 119</span>  fieldNormExpl.<a class="code" href="class_lucene_1_1_net_1_1_search_1_1_explanation.html#a6ea561368bd5826af73342c3fe2e5eb5" title="A description of this explanation node. ">Description</a> = <span class="stringliteral">"fieldNorm(field="</span> + field + <span class="stringliteral">", doc="</span> + doc + <span class="stringliteral">")"</span>;</div> |
| <div class="line"><a name="l00120"></a><span class="lineno"> 120</span>  fieldExpl.<a class="code" href="class_lucene_1_1_net_1_1_search_1_1_explanation.html#a61e84f9a277600115dbc3457ca276abd" title="Adds a sub-node to this explanation node. ">AddDetail</a>(fieldNormExpl);</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>  fieldExpl.<a class="code" href="class_lucene_1_1_net_1_1_search_1_1_complex_explanation.html#a1aac472627a50d98db19487e2234054e" title="The match status of this explanation node.">Match</a> = tfExpl.<a class="code" href="class_lucene_1_1_net_1_1_search_1_1_explanation.html#a67c3152297c3f704820b3a0de8ad8a52" title="Indicates whether or not this Explanation models a good match.">IsMatch</a>;</div> |
| <div class="line"><a name="l00123"></a><span class="lineno"> 123</span>  fieldExpl.<a class="code" href="class_lucene_1_1_net_1_1_search_1_1_explanation.html#ae7933fa7759da03b13211cf2804c40af" title="The value assigned to this explanation node. ">Value</a> = tfExpl.<a class="code" href="class_lucene_1_1_net_1_1_search_1_1_explanation.html#ae7933fa7759da03b13211cf2804c40af" title="The value assigned to this explanation node. ">Value</a> * idfExpl.<a class="code" href="class_lucene_1_1_net_1_1_search_1_1_explanation.html#ae7933fa7759da03b13211cf2804c40af" title="The value assigned to this explanation node. ">Value</a> * fieldNormExpl.<a class="code" href="class_lucene_1_1_net_1_1_search_1_1_explanation.html#ae7933fa7759da03b13211cf2804c40af" title="The value assigned to this explanation node. ">Value</a>;</div> |
| <div class="line"><a name="l00124"></a><span class="lineno"> 124</span>  </div> |
| <div class="line"><a name="l00125"></a><span class="lineno"> 125</span>  result.<a class="code" href="class_lucene_1_1_net_1_1_search_1_1_explanation.html#a61e84f9a277600115dbc3457ca276abd" title="Adds a sub-node to this explanation node. ">AddDetail</a>(fieldExpl);</div> |
| <div class="line"><a name="l00126"></a><span class="lineno"> 126</span>  System.Boolean? tempAux = fieldExpl.<a class="code" href="class_lucene_1_1_net_1_1_search_1_1_complex_explanation.html#a1aac472627a50d98db19487e2234054e" title="The match status of this explanation node.">Match</a>;</div> |
| <div class="line"><a name="l00127"></a><span class="lineno"> 127</span>  result.<a class="code" href="class_lucene_1_1_net_1_1_search_1_1_complex_explanation.html#a1aac472627a50d98db19487e2234054e" title="The match status of this explanation node.">Match</a> = tempAux;</div> |
| <div class="line"><a name="l00128"></a><span class="lineno"> 128</span>  </div> |
| <div class="line"><a name="l00129"></a><span class="lineno"> 129</span>  <span class="comment">// combine them</span></div> |
| <div class="line"><a name="l00130"></a><span class="lineno"> 130</span>  result.<a class="code" href="class_lucene_1_1_net_1_1_search_1_1_explanation.html#ae7933fa7759da03b13211cf2804c40af" title="The value assigned to this explanation node. ">Value</a> = queryExpl.Value * fieldExpl.<a class="code" href="class_lucene_1_1_net_1_1_search_1_1_explanation.html#ae7933fa7759da03b13211cf2804c40af" title="The value assigned to this explanation node. ">Value</a>;</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> (queryExpl.Value == 1.0f)</div> |
| <div class="line"><a name="l00133"></a><span class="lineno"> 133</span>  <span class="keywordflow">return</span> fieldExpl;</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="keywordflow">return</span> result;</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>  }</div> |
| <div class="line"><a name="l00138"></a><span class="lineno"> 138</span> }</div> |
| </div><!-- fragment --></div><!-- contents --> |
| <!-- start footer part --> |
| <hr class="footer"/><address class="footer"><small> |
| Generated on Thu Jan 3 2013 02:12:46 for Lucene.Net by  <a href="http://www.doxygen.org/index.html"> |
| <img class="footer" src="doxygen.png" alt="doxygen"/> |
| </a> 1.8.3 |
| </small></address> |
| </body> |
| </html> |
