SingleIndexBarrelReader.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
00012 // Created      : 2005/11/27
00013 //
00014 #ifndef _SINGLEINDEXBARRELREADER_H
00015 #define _SINGLEINDEXBARRELREADER_H
00016 
00017 #include "IndexBarrelReader.h"
00018 #include "NormsReader.h"
00019 #include "../utility/BitVector.h"
00020 using namespace firtex::utility;
00021 
00022 namespace firtex
00023 {
00024         namespace index
00025         {
00026                 class CSingleIndexBarrelReader : public CIndexBarrelReader
00027                 {
00028                 public:
00029                         CSingleIndexBarrelReader(CDirectory* pDirectory,const tchar* name);
00030                         virtual ~CSingleIndexBarrelReader(void);
00031                 public:
00037                         void                    open(const tchar* name);
00038 
00044                         document::CDocument*    document(docid_t docID);
00045 
00053                         document::CField*               field(docid_t docID,fieldid_t fid);
00054 
00059                         void                    deleteDocument(docid_t docID);
00060 
00064                         void                    undeleteAll();
00065 
00070                         bool                    isDeleted(docid_t docID);
00071 
00075                         bool                    hasDeletions();
00076 
00080                         count_t                 numDeletedDocs();
00081 
00087                         CTermReader*    termReader(){return m_reader;}
00088 
00094                         CTermReader*    termReader(const tchar* field);
00095 
00101                         CTermVectorReader*      getTermVectorReader();
00102 
00107                         CNormBytes*             norms(const tchar* field);
00108 
00113                         CNormBytes*             norms(fieldid_t fid);
00114 
00118                         CFieldsInfo&    getFieldsInfo(){return *m_pFieldsInfo;}
00119 
00123                         uint64_t                numTerms();
00124 
00128                         void                    close();
00129                 private:                        
00130                         CStoredFieldsReader*    m_pStoredFieldsReader;
00131                         CNormsReader*                   m_pNormsReader;
00132 
00133                         tstring                                 m_name;
00134                         CFieldsInfo*                    m_pFieldsInfo;
00135 
00136                         CTermReader*                    m_reader;
00137 
00138                         CTermVectorReader*              m_pTermVectorReader;
00139 
00140                         CBitVector*                             m_deletedDocs;
00141                         bool                                    m_deletedDocsDirty;
00142                 };
00143         }
00144 }
00145 
00146 #endif