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 "InvFPDocList.hpp"
#include "InvFPTypes.hpp"


namespace lemur
{
  namespace retrieval 
  {
    

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

      int id() const {return currEntry.docID();}
      lemur::api::COUNT_T count() const {return currEntry.termCount();}
      const lemur::api::LOC_T *positions() const {return currEntry.positions();}
      lemur::api::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(lemur::api::DOCID_T did);
      int posSize() const;  
      int size;
      int nextPos;
    private:
      lemur::api::LOC_T *posList; // internally allocated, must use delete[]()
      const lemur::index::InvFPDocList *dList;
      lemur::index::InvFPDocInfo currEntry;
      int listSize;
    };
  }
}

#endif

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