src/CSC_matrix.h

/*  -*- C++ -*-

    textIR - A fast text document retrieval engine

    Copyright (C) 2005-2009 Laurence Park

    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
    the Free Software Foundation, either version 3 of the License, or
    (at your option) any later version.

    This program is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    GNU General Public License for more details.

    You should have received a copy of the GNU General Public License
    along with this program.  If not, see <http://www.gnu.org/licenses/>.

    File information:
    $Header: /home/staff/lapark/cvsroot/web_search/textIR/src/CSC_matrix.h,v 1.5.2.1 2009/11/05 01:54:06 lapark Exp $
*/

#ifndef CSC_MATRIX_H
#define CSC_MATRIX_H

class CSC_Matrix {
public:

  CSC_Matrix(int columns, int length);
  ~CSC_Matrix(void);

  void insertElement(int column, int row, float value);

  int closeInsert(void);

  void reset(void);

  void reset(int columnNumber);

  void nextElement(void);

  int column(void);

  int row(void);

  float element(void);

  int length(void);

  void editElement(float value);

  void purgeMatrix(void);

  void salvageMatrix(void);

  int *CSC_row;

  int *CSC_column;

  float *CSC_matrix;

  int columns(void);

private:
  void insertRowElement(int row, float value);
  void checkColumns(int columns);

  int position;
  int columnPointer;
  int nextColumnPointer;
  int previousRow;

  int columnCount;

};


#endif

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