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ProxInfo.hpp

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/*==========================================================================
 * Copyright (c) 2002-2003 University of Massachusetts.  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.lemurproject.org/license.html
 *
 *==========================================================================
*/
/*
  author: fff, dmf
  * split out into separate header. Rewrite to use DocInfoList w/o copy.
*/
#ifndef _PROXINFO_HPP_
#define _PROXINFO_HPP_

#include "InvFPIndex.hpp"

class ProxInfo {
public: 
  ProxInfo() : nextPos(0), posList(NULL), size(0),
               dList(NULL), listSize(0) { }
  ProxInfo::ProxInfo(int num, int tf, const DocInfoList *dl);
  
  ProxInfo(int  num, int tf, LOC_T *pl);
  ~ProxInfo() { delete(dList); delete[](posList);}

  int id() const {return currEntry.docID();}
  COUNT_T count() const {return currEntry.termCount();}
  const LOC_T *positions() const {return currEntry.positions();}
  LOC_T position(int k) const {return *(positions() + k);}
  void startIteration() {
    if (dList != NULL) dList->startIteration();
  }
  bool hasMore() {return(dList != NULL && dList->hasMore());}
  bool nextDoc();
  bool nextDoc(DOCID_T did);
  int posSize() const;  
  int size;
  int nextPos;
private:
  LOC_T *posList; // internally allocated, must use delete[]()
  const InvFPDocList *dList;
  InvFPDocInfo currEntry;
  int listSize;
};
#endif

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