Weight.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      : 2006/3/9
00013 //
00014 #ifndef _WEIGHT_H
00015 #define _WEIGHT_H
00016 #include "../utility//StdHeader.h"
00017 #include "Query.h"
00018 
00019 namespace firtex
00020 {
00021         namespace search
00022         {
00023                 class CWeight
00024                 {
00025                 public:
00026                         CWeight(void) 
00027                                 :m_pQuery(NULL)
00028                                 ,m_bDeleteQuery(false)
00029                         {
00030                         }
00031                         CWeight(CQuery* pQuery,bool bDeleteQuery)
00032                                 :m_pQuery(pQuery)
00033                                 ,m_bDeleteQuery(bDeleteQuery)
00034                         {
00035                         }
00036                         virtual ~CWeight(void)
00037                         {
00038                                 if(m_pQuery && m_bDeleteQuery)
00039                                         delete m_pQuery;
00040                                 m_pQuery = NULL;
00041                         }
00042                 public:                 
00043                         virtual weight_t        squaredWeight() = 0;
00044                         virtual void            normalize(float fQueryNorm)=0;                  
00045                         virtual weight_t        getValue()=0;
00046 
00047                         CQuery*         getQuery(){return m_pQuery;}
00048                 
00049                         void            setQuery(CQuery* pQuery,bool bDeleteQuery){m_pQuery = pQuery;m_bDeleteQuery = bDeleteQuery;}
00050                         void            setDeleteQuery(bool bDeleteQuery = true){m_bDeleteQuery = bDeleteQuery;}
00051                 private:
00052                         CQuery*         m_pQuery;
00053                         bool            m_bDeleteQuery;
00054                 };
00055         }
00056 }
00057 
00058 #endif