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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_TermQuery_
#define _lucene_search_TermQuery_
#if defined(_LUCENE_PRAGMA_ONCE)
# pragma once
#endif
#include "SearchHeader.h"
#include "Scorer.h"
#include "CLucene/index/Term.h"
#include "TermScorer.h"
#include "CLucene/index/IndexReader.h"
#include "CLucene/util/StringBuffer.h"
#include "CLucene/index/Terms.h"
CL_NS_DEF(search)
/** A Query that matches documents containing a term.
This may be combined with other terms with a {@link BooleanQuery}.
*/
class TermQuery: public Query {
private:
CL_NS(index)::Term* term;
class TermWeight: public Weight {
private:
Searcher* searcher;
qreal value;
qreal idf;
qreal queryNorm;
qreal queryWeight;
TermQuery* _this;
CL_NS(index)::Term* _term;
public:
TermWeight(Searcher* searcher, TermQuery* _this, CL_NS(index)::Term* _term);
~TermWeight();
TCHAR* toString();
Query* getQuery() { return (Query*)_this; }
qreal getValue() { return value; }
qreal sumOfSquaredWeights();
void normalize(qreal queryNorm);
Scorer* scorer(CL_NS(index)::IndexReader* reader);
void explain(CL_NS(index)::IndexReader* reader, int32_t doc, Explanation* ret);
};
protected:
Weight* _createWeight(Searcher* searcher);
TermQuery(const TermQuery& clone);
public:
// Constructs a query for the term <code>t</code>.
TermQuery(CL_NS(index)::Term* t);
~TermQuery();
static const TCHAR* getClassName();
const TCHAR* getQueryName() const;
//added by search highlighter
CL_NS(index)::Term* getTerm(bool pointer=true) const;
// Prints a user-readable version of this query.
TCHAR* toString(const TCHAR* field) const;
bool equals(Query* other) const;
Query* clone() const;
/** Returns a hash code value for this object.*/
size_t hashCode() const;
};
CL_NS_END
#endif
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