column.h

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// Copyright (C) 2006 Ivo Nowak and Stefan Vigerske
// All Rights Reserved.
// This code is published under the Common Public License.
//
// Author: Stefan Vigerske

#ifndef COLUMN_H
#define COLUMN_H

#include "standard.h"
#include "problem.h"
#include "func.h"
#include "opt.h"
//#include "node.h"
#include "minlpopt.h"
#include "bcp.h"
#include "rmp.h"

class MinlpNode;


class ColumnGenerator {
        private:
                Pointer<MinlpNode> node;

                MinlpBCP& bcp;

                Pointer<Param> param;

                Pointer<RMPManager> RMP;

                int max_major_iter;
                int max_minor_iter;
                int max_initRMP_iter;

                double rc_tol;

                void add_cut(Pointer<SepQcFunc> cut, int k);

                int get_search_dir2(dvector& a, double& c, int k);

        public:
                ColumnGenerator(Pointer<MinlpNode> node_, MinlpBCP& bcp_);

                int init_RMP();
                int solve_RMP();

                void clear_RMP() { RMP=NULL; }

                void solve_lag_problem(MinlpBCP::LagSolveStatus& status, int k, Pointer<SepQcFunc> temp_cut=NULL);

                void update_ExtremePoints();

                void mult_W(UserVector<double>& x, const dvector &z, int k);

                int generate_RMP();

                double subprobl_key(double rc, int k);

                void print(ostream& out) const;
};

#endif

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