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/*------------------------------------------------------------------------------
* Copyright (C) 2003-2006 Ben van Klinken and the CLucene Team
*
* Distributable under the terms of either the Apache License (Version 2.0) or
* the GNU Lesser General Public License, as specified in the COPYING file.
------------------------------------------------------------------------------*/
#ifndef _lucene_search_ConjunctionScorer_
#define _lucene_search_ConjunctionScorer_
#if defined(_LUCENE_PRAGMA_ONCE)
# pragma once
#endif
#include "Scorer.h"
#include "Similarity.h"
CL_NS_DEF(search)
/** Scorer for conjunctions, sets of queries, all of which are required. */
class ConjunctionScorer: public Scorer {
private:
CL_NS(util)::CLLinkedList<Scorer*,CL_NS(util)::Deletor::Object<Scorer> > scorers;
bool firstTime;
bool more;
qreal coord;
Scorer* first() const;
Scorer* last();
void sortScorers();
bool doNext();
void init();
public:
ConjunctionScorer(Similarity* similarity);
virtual ~ConjunctionScorer();
TCHAR* toString(void){
return STRDUP_TtoT(_T("ConjunctionScorer"));
}
void add(Scorer* scorer);
int32_t doc() const;
bool next();
bool skipTo(int32_t target);
qreal score();
virtual void explain(int32_t doc, Explanation* ret) {
_CLTHROWA(CL_ERR_UnsupportedOperation,"UnsupportedOperationException: ConjunctionScorer::explain");
}
};
CL_NS_END
#endif
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