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BasicDocInfoList.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 _BASICDOCINFOLIST_HPP
#define _BASICDOCINFOLIST_HPP

#include "DocInfoList.hpp"



class BasicDocInfo : public DocInfo {
public:
  BasicDocInfo() {}
  BasicDocInfo( int docID, int termCount) : 
    id(docID), count(termCount) {}
  virtual int termCount() { return count;}

  virtual int docID() { return id;}
  friend class BasicDocInfoList;
private:
  int id, count;
};



class BasicDocInfoList : public DocInfoList {
public:
  BasicDocInfoList(int *tmpDocArray, int size);

  virtual ~BasicDocInfoList() {}
  virtual void startIteration() {
    it = 0;
    prevDocID = 0;
  }

  virtual bool hasMore() { return (it<sz); }

  virtual DocInfo * nextEntry();


private:
  int sz, it, prevDocID;
  int *tmpdarr;
};


inline BasicDocInfoList::BasicDocInfoList(int *tmpDocArray, int size):
  tmpdarr(tmpDocArray), sz(size), it(0), prevDocID(0) 
{
}

inline DocInfo * BasicDocInfoList::nextEntry() {
  // assert (hasMore());
  static BasicDocInfo info;
  info.id =  tmpdarr[it]+prevDocID;
  prevDocID = info.id;
  info.count = tmpdarr[sz+it];
  it++;
  return (&info);
}

#endif

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