RangeQuery.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      : 2006/7/16
00013 //
00014 #ifndef _RANGEQUERY_H
00015 #define _RANGEQUERY_H
00016 
00017 #if _MSC_VER > 1000
00018 #pragma once
00019 #endif // _MSC_VER > 1000
00020 
00021 #include "Query.h"
00022 #include "../index/Term.h"
00023 using namespace firtex::index;
00024 
00025 namespace firtex
00026 {
00027         namespace search
00028         {
00029                 class CRangeQuery :     public CQuery
00030                 {
00031                 public:
00039                         CRangeQuery(CTerm* lowerTerm,CTerm* upperTerm,bool bInclusive);
00040                         CRangeQuery(const CRangeQuery& clone);
00041                         virtual ~CRangeQuery(void);
00042                 public:
00044                         const tchar*    getQueryName() const{return _T("rangquery");};
00045 
00052                         CQuery*                 optimize(firtex::index::CIndexReader* pReader);
00053 
00058                         CQuery*                 clone();                
00059                 private:
00060                         CTerm*  m_pLowerTerm;   //下限
00061                         CTerm*  m_pUpperTerm;   //上限
00062                         bool    m_bInclusive;   //是否包含边界值
00063                 };
00064         }
00065 }
00066 
00067 #endif