AbcWarmStart.hpp

Go to the documentation of this file.

/* $Id: AbcWarmStart.hpp 2385 2019-01-06 19:43:06Z unxusr $ */
#ifndef AbcWarmStart_H
#define AbcWarmStart_H
#include "AbcCommon.hpp"
#include "CoinWarmStartBasis.hpp"
// could test using ClpSimplex (or for fans)
#define CLP_WARMSTART
#ifdef CLP_WARMSTART
#include "ClpSimplex.hpp"
#define AbcSimplex ClpSimplex
#else
#include "AbcSimplex.hpp"
#endif
class AbcWarmStart;
//#############################################################################
class AbcWarmStartOrganizer {
public:
  void createBasis0();
  void createBasis12();
  void createBasis34();
  void deleteBasis(AbcWarmStart *basis);

  AbcWarmStartOrganizer(AbcSimplex *model = NULL);

  AbcWarmStartOrganizer(const AbcWarmStartOrganizer &ws);

  virtual ~AbcWarmStartOrganizer();

  virtual AbcWarmStartOrganizer &operator=(const AbcWarmStartOrganizer &rhs);

protected:
  AbcSimplex *model_;
  AbcWarmStart *firstBasis_;
  AbcWarmStart *lastBasis_;
  int numberBases_;
  int sizeBases_;
};

class AbcWarmStart : public virtual CoinWarmStartBasis {
public:

  virtual void setSize(int ns, int na);

  virtual void resize(int newNumberRows, int newNumberColumns);

  virtual void compressRows(int tgtCnt, const int *tgts);

  virtual void deleteRows(int rawTgtCnt, const int *rawTgts);

  virtual void deleteColumns(int number, const int *which);
  inline void setModel(AbcSimplex *model)
  {
    model_ = model;
  }
  inline AbcSimplex *model() const
  {
    return model_;
  }
  void createBasis0(const AbcSimplex *model);
  void createBasis12(const AbcSimplex *model);
  void createBasis34(const AbcSimplex *model);

  AbcWarmStart();

  AbcWarmStart(AbcSimplex *model, int type);

  AbcWarmStart(const AbcWarmStart &ws);

  virtual CoinWarmStart *clone() const
  {
    return new AbcWarmStart(*this);
  }

  virtual ~AbcWarmStart();

  virtual AbcWarmStart &operator=(const AbcWarmStart &rhs);

  virtual void assignBasisStatus(int ns, int na, char *&sStat, char *&aStat);

protected:
  int typeExtraInformation_;
  int lengthExtraInformation_;
  char *extraInformation_;
  AbcSimplex *model_;
  AbcWarmStartOrganizer *organizer_;
  AbcWarmStart *previousBasis_;
  AbcWarmStart *nextBasis_;
  int stamp_;
  int numberValidRows_;
};
#endif

/* vi: softtabstop=2 shiftwidth=2 expandtab tabstop=2
*/