Inheritance diagram for NOOPSolverForSubproblemWorker:

Public Member Functions
void	setSolverBehavior (const std::vector< double > &red_costs, const std::vector< char > &types, const std::vector< double > &lower_bounds, const std::vector< double > &upper_bounds)

int	get_ncols () const override
	returns number of columns of the problem

int	get_n_integer_vars () const override
	returns number of integer variables in the problem

void	get_lp_sol (double , double , double *red_costs) const override
	Get LP solution of a problem (available after method "solve_lp")

Public Member Functions inherited from NOOPSolverForWorker
void	get_col_type (char *coltype, int begin, int end) const override
	Returns the column types for the columns in a given range.

void	get_lb (double *lb, int begin, int end) const override
	Returns the lower bounds for variables in a given range.

void	get_ub (double *ub, int begin, int end) const override
	Returns the upper bounds for variables in a given range.

Public Member Functions inherited from NOOPSolver
SolverAbstract *	clone () const override

int	get_number_of_instances () override
	Returns number of instances of solver currently in memory.

std::string	get_solver_name () const override
	Returns the solver used.

void	init () override
	Initializes a problem.

void	free () override
	Frees all the datas contained in the Solver environment.

void	write_prob_mps (const std::filesystem::path &filename) override
	writes an optimization problem in a MPS file

void	write_prob_lp (const std::filesystem::path &filename) override
	writes an optimization problem in a LP file

void	read_prob_mps (const std::filesystem::path &filename) override
	reads an optimization problem contained in a MPS file

void	read_prob_lp (const std::filesystem::path &filename) override
	reads an optimization problem contained in a MPS file

int	get_nrows () const override
	returns number of rows of the problem

int	get_nelems () const override
	returns number of non zeros elements in the matrix, excluding objective

void	get_obj (double *obj, int first, int last) const override
	returns the objective function coefficients for the columns in a given range

void	set_obj_to_zero () override
	Set the objective function coefficients to zero.

void	set_obj (const double *obj, int first, int last) override
	Set the objective function coefficients for the columns in a given range.

void	get_rows (int mstart, int mclind, double dmatval, int size, int nels, int first, int last) const override
	get coefficients of rows from index first to last

void	get_row_type (char *qrtype, int first, int last) const override
	Returns the row types for the rows in a given range.

void	get_rhs (double *rhs, int first, int last) const override
	Returns the right-hand sides of the rows in a given range.

void	get_rhs_range (double *range, int first, int last) const override
	Returns the right hand side range values for the rows in a given range.

void	get_cols (int mstart, int mrwind, double dmatval, int size, int nels, int first, int last) const override
	get coefficients of cols from index first to last

int	get_row_index (const std::string &name) override
	Returns the index of row named "name".

int	get_col_index (const std::string &name) override
	Returns the index of column named "name".

std::vector< std::string >	get_row_names (int first, int last) const override
	Returns the names of row from index first to last cannot be declared as const because of some solver methods.

std::vector< std::string >	get_row_names () override
	Returns the names of rows.

std::vector< std::string >	get_col_names (int first, int last) const override
	Returns the names of columns from index first to last cannot be declared as const because of some solver methods.

std::vector< std::string >	get_col_names () override
	Returns the names of columns.

void	del_rows (int first, int last) override
	Deletes rows between index first and last.

void	del_cols (int first, int last) override
	Deletes col at index first and last.

void	add_rows (int newrows, int newnz, const char qrtype, const double rhs, const double range, const int mstart, const int mclind, const double dmatval, const std::vector< std::string > &row_names) override
	Adds rows to the problem.

void	add_cols (int newcol, int newnz, const double objx, const int mstart, const int mrwind, const double dmatval, const double bdl, const double bdu, const std::vector< std::string > &col_names) override
	Adds new columns to the problem.

void	add_name (int type, const char *cnames, int indice) override
	Adds a name to a row or a column.

void	add_names (int type, const std::vector< std::string > &cnames, int first, int end) override

void	chg_obj (const std::vector< int > &mindex, const std::vector< double > &obj) override
	Change coefficients in objective function.

void	chg_obj_direction (const bool minimize) override
	Change the problem's objective function sense to minimize or maximize.

void	chg_bounds (const std::vector< int > &mindex, const std::vector< char > &qbtype, const std::vector< double > &bnd) override
	Change bounds of some variables.

void	chg_col_type (const std::vector< int > &mindex, const std::vector< char > &qctype) override
	Change type of some columns.

void	chg_rhs (int id_row, double val) override
	Change rhs of a row.

void	chg_coef (int id_row, int id_col, double val) override
	Change a coefficient in the matrix.

void	chg_row_name (int id_row, const std::string &name) override
	Change the name of a constraint.

void	chg_col_name (int id_col, const std::string &name) override
	Change the name of a variable.

int	solve_lp () override
	Solves a problem as LP.

int	solve_mip () override
	Solves a problem as MIP.

void	get_basis (int rstatus, int cstatus) const override
	Returns the current basis into the user's data arrays.

double	get_mip_value () const override
	Get the optimal value of a MIP problem (available after method "solve_mip")

double	get_lp_value () const override
	Get the optimal value of a LP problem (available after method "solve_lp" )

int	get_splex_num_of_ite_last () const override
	Get the number of simplex iterations done in the last resolution of the problem.

void	get_mip_sol (double *primals) override
	Get MIP solution of a problem (available after method "solve_mip")

void	set_output_log_level (int loglevel) override
	Sets log level of the solver.

void	set_algorithm (const std::string &algo) override
	Sets algorithm used by solver to solve LP's.

void	set_threads (int n_threads) override
	Sets the maximum number of threads used to perform optimization.

void	set_optimality_gap (double gap) override
	Sets the optimality gap.

void	set_simplex_iter (int iter) override
	Sets the maximum number of simplex iterations the solver can perform.

void	write_basis (const std::filesystem::path &filename) override
	Writes the current basis to a file for later input into the optimizer.

void	read_basis (const std::filesystem::path &filename) override
	Instructs the optimizer to read in a previously saved basis from a file.

void	set_basis (std::span< int > rstatus, std::span< int > cstatus) override

void	save_prob (const std::filesystem::path &filename) override
	write an optimisation problem in a file

void	restore_prob (const std::filesystem::path &filename) override
	read an optimisation problem from a file

void	get_presolve_map (int rowmap, int colmap) const override
	Get the presolve map (to be implemented by derived classes)

void	mark_indices_to_keep_presolve (int nrows, int ncols, int rowind, int colind) override
	Mark indices to keep during presolve (to be implemented by derived classes)

void	presolve_only () override
	Presolve the problem (to be implemented by derived classes)

Public Member Functions inherited from SolverAbstract
virtual	~SolverAbstract ()=default
	destructor of SolverAbstract class : does nothing

std::list< std::ostream * > &	get_stream () const
	returns the list of streams used by the solver instance

void	add_stream (std::ostream &stream)
	add a stream to the list of streams used by the solver instance

void	set_fp (FILE *fp)

bool	operator== (const SolverAbstract &) const

Additional Inherited Members
Static Public Member Functions inherited from SolverAbstract
static void	zero_status_check (int status, const std::string &action_failed, const std::string &log_location)
	Check if a status code is different to 0, throw InvalidStatusException if it occurs.

Public Attributes inherited from SolverAbstract
std::vector< std::string >	SOLVER_STRING_STATUS

std::string	_name

std::list< std::ostream * >	_streams

FILE *	_fp = nullptr

std::filesystem::path	_log_file = ""

Protected Attributes inherited from NOOPSolverForWorker
std::vector< char >	col_types

std::vector< double >	lbs

std::vector< double >	ubs

Member Function Documentation

◆ get_lp_sol()

void NOOPSolverForSubproblemWorker::get_lp_sol	(	double *	primals,
		double *	duals,
		double *	reduced_costs ) const

inlineoverridevirtual

Get LP solution of a problem (available after method "solve_lp")

Parameters

primals	: values of primal variables
duals	: values of dual variables
reduced_cost	reduced_cost in an optimal basis

Reimplemented from NOOPSolver.

◆ get_n_integer_vars()

int NOOPSolverForSubproblemWorker::get_n_integer_vars ( ) const

inlineoverridevirtual

returns number of integer variables in the problem

Reimplemented from NOOPSolver.

◆ get_ncols()

int NOOPSolverForSubproblemWorker::get_ncols ( ) const

inlineoverridevirtual

returns number of columns of the problem

Reimplemented from NOOPSolver.

The documentation for this class was generated from the following file:

tests/cpp/benders/SubproblemWorkerTest.cpp

Public Member Functions

Additional Inherited Members

Member Function Documentation

◆ get_lp_sol()

◆ get_n_integer_vars()

◆ get_ncols()