WordFieldTermIterator.h

00001 //
00002 // Copyright(C) 2005--2006 Institute of Computing Tech, Chinese Academy of Sciences. 
00003 // All rights reserved.
00004 // This file is part of FirteX (www.firtex.org)
00005 //
00006 // Use of the FirteX is subject to the terms of the software license set forth in 
00007 // the LICENSE file included with this software, and also available at
00008 // http://www.firtex.org/license.html
00009 //
00010 // Author       : 郭瑞杰(GuoRuijie)
00011 // Email        : ruijieguo@software.ict.ac.cn,ruijieguo@gmail.com
00012 // Created      : 2006/7/17
00013 //
00014 #ifndef _WORDFIELDTERMITERATOR_H
00015 #define _WORDFIELDTERMITERATOR_H
00016 
00017 #if _MSC_VER > 1000
00018 #pragma once
00019 #endif // _MSC_VER > 1000
00020 
00021 #include "../utility/StdHeader.h"
00022 #include "TermIterator.h"
00023 #include "Vocabulary.h"
00024 
00025 
00026 namespace firtex
00027 {
00028         namespace index
00029         {
00030                 class CWordFieldTermIterator :  public CTermIterator
00031                 {
00032                 public:
00033                         CWordFieldTermIterator(const tchar* field,CVocabulary<termid_t>* pVocabulary);
00034                         virtual ~CWordFieldTermIterator(void);
00035                 public:
00040                         bool    next();
00041 
00047                         bool    skipTo(CTerm* target);
00048 
00052                         const CTerm*  term();
00053 
00057                         freq_t          docFreq();                      
00058                 private:
00059                         tstring         m_field;
00060                         CVocabulary<termid_t>*  m_pVocabulary;
00061                         CVocabulary<termid_t>::vacabulary_iterator m_termIterator;
00062                         CTerm*                                  m_pCurTerm;
00063                         CTermInfo*                              m_pTermInfo;
00064                         int32_t                                 m_curPos;
00065                 };
00066         }
00067 }
00068 
00069 #endif