TermIterator.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      : 2006/7/17
00013 //
00014 #ifndef _TERMITERATOR_H
00015 #define _TERMITERATOR_H
00016 
00017 #if _MSC_VER > 1000
00018 #pragma once
00019 #endif // _MSC_VER > 1000
00020 
00021 #include "Term.h"
00022 
00023 namespace firtex
00024 {
00025         namespace index
00026         {
00027                 class CTermIterator
00028                 {
00029                 public:
00030 
00031                         CTermIterator(void)
00032                         {
00033                         }
00034 
00035                         virtual ~CTermIterator(void)
00036                         {
00037                         }
00038                 public:
00043                         virtual bool    next() = 0;
00044 
00050                         virtual bool    skipTo(const CTerm* target) = 0;
00051 
00055                         virtual const CTerm*  term() = 0;
00056 
00060                         virtual freq_t          docFreq() = 0;
00061                 };
00062         }
00063 }
00064 
00065 #endif