TermDocs.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      : 2005/12/20
00013 //
00014 #ifndef __TERMDOCS_H
00015 #define __TERMDOCS_H
00016 
00017 #include "Term.h"
00018 #include "../utility/StdHeader.h"
00019 
00020 namespace firtex
00021 {
00022         namespace index
00023         {
00024                 class CTermDocs
00025                 {
00026                 public:
00027 
00028                         CTermDocs(void)
00029                         {
00030                         }
00031  
00032                         virtual ~CTermDocs(void)
00033                         {
00034                         }
00035 
00039                         virtual bool  seek(CTerm* term) = 0;
00040 
00044                         virtual freq_t  docFreq()=0;
00045 
00052                         virtual count_t next(docid_t*& docs, count_t*& freqs)=0;
00053 
00061                         virtual bool skipTo(docid_t target,docid_t& nearTarget)=0;
00062                         
00067                         virtual bool next()=0;
00068                         
00073                         virtual docid_t doc()=0;
00074 
00079                         virtual count_t freq()=0;
00080 
00084                         virtual void  close()=0;
00085                 };
00086         }
00087 }
00088 
00089 
00090 #endif