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SpanWeight.h
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1 // Copyright (c) 2009-2011 Alan Wright. All rights reserved.
3 // Distributable under the terms of either the Apache License (Version 2.0)
4 // or the GNU Lesser General Public License.
6
7 #ifndef SPANWEIGHT_H
8 #define SPANWEIGHT_H
9
10 #include "Weight.h"
11
12 namespace Lucene
13 {
15 class LPPAPI SpanWeight : public Weight
16 {
17 public:
18 SpanWeight(SpanQueryPtr query, SearcherPtr searcher);
19 virtual ~SpanWeight();
20
21 LUCENE_CLASS(SpanWeight);
22
23 protected:
24 SimilarityPtr similarity;
25 double value;
26 double idf;
27 double queryNorm;
28 double queryWeight;
29
30 SetTerm terms;
31 SpanQueryPtr query;
32 IDFExplanationPtr idfExp;
33
34 public:
35 virtual QueryPtr getQuery();
36 virtual double getValue();
37 virtual double sumOfSquaredWeights();
38 virtual void normalize(double norm);
39 virtual ScorerPtr scorer(IndexReaderPtr reader, bool scoreDocsInOrder, bool topScorer);
40 virtual ExplanationPtr explain(IndexReaderPtr reader, int32_t doc);
41
42 friend class PayloadNearSpanScorer;
43 friend class PayloadTermSpanScorer;
44 };
45 }
46
47 #endif

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