SpanScorer.h

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// Copyright (c) 2009-2014 Alan Wright. All rights reserved.
// Distributable under the terms of either the Apache License (Version 2.0)
// or the GNU Lesser General Public License.
 
#ifndef SPANSCORER_H
#define SPANSCORER_H
 
#include "Scorer.h"
 
namespace Lucene {

class LPPAPI SpanScorer : public Scorer {
public:
    SpanScorer(const SpansPtr& spans, const WeightPtr& weight, const SimilarityPtr& similarity, ByteArray norms);
    virtual ~SpanScorer();
 
    LUCENE_CLASS(SpanScorer);
 
protected:
    SpansPtr spans;
    WeightPtr weight;
    ByteArray norms;
    double value;
    bool more;
    int32_t doc;
    double freq;
 
public:
    virtual int32_t nextDoc();
    virtual int32_t advance(int32_t target);
    virtual int32_t docID();
    virtual double score();
    virtual float termFreq(){
        return freq;
    }
 
protected:
    virtual bool setFreqCurrentDoc();

    virtual ExplanationPtr explain(int32_t doc);
 
    friend class SpanWeight;
    friend class PayloadNearSpanWeight;
};
 
}
 
#endif