IndexSearcher.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      : 2005/12/27
00013 //
00014 #ifndef _INDEXSEARCHER_H
00015 #define _INDEXSEARCHER_H
00016 
00017 #include "Searcher.h"
00018 #include "../index/IndexReader.h"
00019 #include "Filter.h"
00020 #include "Sort.h"
00021 using namespace firtex::index;
00022 
00023 namespace firtex
00024 {
00025         namespace search
00026         {
00027                 class CIndexSearcher :  public CSearcher
00028                 {
00029                 public:
00030                         CIndexSearcher(void);
00031                         CIndexSearcher(const tchar* indexName);
00032                         CIndexSearcher(CIndexReader*    pIndexReader);
00033                         virtual ~CIndexSearcher(void);
00034                 public:
00041                         CQueryHits*             search(CQuery* pQuery,int nDocs);
00042 
00050                         CQueryHits*             search(CQuery* pQuery,CFilter* pFilter,int nDocs);
00051 
00060                         CQueryHits*             search(CQuery* pQuery,CFilter* pFilter,int nDocs,CSort* pSort);
00061 
00068                         CQuery*                 optimizeQuery(CQuery* pOrgQuery);
00069 
00070 
00076                         freq_t                  docFreq(CTerm* t);
00077 
00082                         CTermReader*    termReader()const;
00083 
00089                         CNormBytes*             norms(const tchar* field);
00090 
00095                         count_t                 maxDocs(){return m_pIndexReader->maxDoc();}
00096                         
00101                         void                    attachReader(CIndexReader* pIndexReader);
00102 
00107                         CIndexReader*   detachReader();
00108 
00114                         document::CDocument*            doc(docid_t docID){return m_pIndexReader->document(docID);};
00115                 private:
00116                         CIndexReader*   m_pIndexReader;
00117                         CTermReader*    m_pTermReader;                  
00118                 };
00119         }
00120 }
00121 
00122 
00123 #endif