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Index.hpp

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/*==========================================================================
 * Copyright (c) 2001 Carnegie Mellon University.  All Rights Reserved.
 *
 * Use of the Lemur Toolkit for Language Modeling and Information Retrieval
 * is subject to the terms of the software license set forth in the LICENSE
 * file included with this software, and also available at
 * http://www.cs.cmu.edu/~lemur/license.html
 *
 *==========================================================================
*/


#ifndef _INDEX_HPP
#define _INDEX_HPP



// C. Zhai 02/08/2001

#include "TermInfoList.hpp"
#include "DocInfoList.hpp"

class Index {
public:

  virtual ~Index() {}; 



  virtual bool open(const char * indexName)=0;



  virtual int term (const char * word)=0;

  virtual const char * term (int termID)=0;

  virtual int document (const char * docIDStr)=0;

  virtual const char * document (int docID)=0;


  virtual const char *termLexiconID() { return NULL;} 



  virtual int docCount () =0;

  virtual int termCountUnique ()=0;

  virtual int termCount (int termID) const =0;

  virtual int termCount () const =0;

  virtual float docLengthAvg()=0;

  virtual int docCount(int termID)=0;

  virtual int docLength (int docID) const =0;




  virtual DocInfoList *docInfoList(int termID)=0;

  virtual TermInfoList *termInfoList(int docID)=0;


};


#endif

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