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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.cs.cmu.edu/~lemur/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, DocInfoList *dl) : nextPos(0), 
                                                         posList(NULL),  
                                                         size(0),
                                                         dList(dl),  
                                                         listSize(tf) { }
  ProxInfo(int  num, int tf, int *pl);
  ~ProxInfo() { delete(dList); delete[](posList);}

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

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