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TermScorer.h
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1
2// Copyright (c) 2009-2014 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 TERMSCORER_H
8#define TERMSCORER_H
9
10#include "Scorer.h"
11
12namespace Lucene {
13
15class LPPAPI TermScorer : public Scorer {
16public:
22 TermScorer(const WeightPtr& weight, const TermDocsPtr& td, const SimilarityPtr& similarity, ByteArray norms);
23
24 virtual ~TermScorer();
25
27
28protected:
31 ByteArray norms;
33 int32_t doc;
34
35 Collection<int32_t> docs; // buffered doc numbers
36 Collection<int32_t> freqs; // buffered term freqs
37
38 int32_t freq;
39 int32_t pointer;
40 int32_t pointerMax;
41
42 static const int32_t SCORE_CACHE_SIZE;
44
45
46
47public:
48 virtual void score(const CollectorPtr& collector);
49 virtual int32_t docID();
50
55 virtual int32_t nextDoc();
56
57 virtual double score();
58
63 virtual int32_t advance(int32_t target);
64
66 virtual String toString();
67
68 virtual float termFreq(){
69 return freq;
70 }
71
72protected:
74
75 virtual bool score(const CollectorPtr& collector, int32_t max, int32_t firstDocID);
76};
77
78}
79
80#endif
#define LUCENE_CLASS(Name)
Definition LuceneObject.h:24
Utility template class to handle collections that can be safely copied and shared.
Definition Collection.h:17
Common scoring functionality for different types of queries.
Definition Scorer.h:33
A Scorer for documents matching a Term.
Definition TermScorer.h:15
Collection< int32_t > docs
Definition TermScorer.h:35
WeightPtr weight
Definition TermScorer.h:29
TermScorer(const WeightPtr &weight, const TermDocsPtr &td, const SimilarityPtr &similarity, ByteArray norms)
Construct a TermScorer.
virtual void score(const CollectorPtr &collector)
Scores and collects all matching documents.
virtual ~TermScorer()
double weightValue
Definition TermScorer.h:32
virtual int32_t docID()
Returns the following:
virtual int32_t nextDoc()
Advances to the next document matching the query. The iterator over the matching documents is buffere...
virtual int32_t advance(int32_t target)
Advances to the first match beyond the current whose document number is greater than or equal to a gi...
virtual double score()
Returns the score of the current document matching the query. Initially invalid, until nextDoc() or a...
int32_t doc
Definition TermScorer.h:33
virtual bool score(const CollectorPtr &collector, int32_t max, int32_t firstDocID)
Collects matching documents in a range. Hook for optimization. Note, firstDocID is added to ensure th...
int32_t freq
Definition TermScorer.h:38
virtual float termFreq()
Definition TermScorer.h:68
Collection< double > scoreCache
Definition TermScorer.h:43
static const Collection< double > SIM_NORM_DECODER()
virtual String toString()
Returns a string representation of this TermScorer.
TermDocsPtr termDocs
Definition TermScorer.h:30
ByteArray norms
Definition TermScorer.h:31
static const int32_t SCORE_CACHE_SIZE
Definition TermScorer.h:42
int32_t pointerMax
Definition TermScorer.h:40
int32_t pointer
Definition TermScorer.h:39
Collection< int32_t > freqs
Definition TermScorer.h:36
Definition AbstractAllTermDocs.h:12
boost::shared_ptr< TermDocs > TermDocsPtr
Definition LuceneTypes.h:236
boost::shared_ptr< Similarity > SimilarityPtr
Definition LuceneTypes.h:435
boost::shared_ptr< Collector > CollectorPtr
Definition LuceneTypes.h:295
boost::shared_ptr< Weight > WeightPtr
Definition LuceneTypes.h:480

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