phrasepositions.h

clucene是c++版的全文检索引擎,完全移植于lucene,采用 stl 编写.

/*------------------------------------------------------------------------------
* 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_PhrasePositions_
#define _lucene_search_PhrasePositions_

#if defined(_LUCENE_PRAGMA_ONCE)
# pragma once
#endif

#include "CLucene/index/Terms.h"

CL_NS_DEF(search)

	class PhrasePositions:LUCENE_BASE {
	public:
		int32_t doc;					  // current doc
		int32_t position;					  // position in doc
		int32_t count;					  // remaining pos in this doc
		int32_t offset;					  // position in phrase
		CL_NS(index)::TermPositions* tp;				  // stream of positions
		PhrasePositions* _next;				  // used to make lists


		//Constructor
		PhrasePositions(CL_NS(index)::TermPositions* Tp, const int32_t o);
		//Destructor
		~PhrasePositions();

		bool next();
      bool skipTo(int32_t target);

		void firstPosition();

		bool nextPosition();
	};
CL_NS_END
#endif