Interface for the Gurobi LP solver. More...

#include <grb.h>

Inheritance diagram for lemon::GrbLp:

Collaboration diagram for lemon::GrbLp:

Public Member Functions
	GrbLp (const GRBEnv &env=_defEnv)


virtual GrbLp *	newSolver () const


virtual GrbLp *	cloneSolver () const


Public Member Functions inherited from lemon::GrbBase
GRBEnv	getEnv () const
	Get the environment of the underlying Gurobi model.

GRBEnv	getEnv ()
	Get the environment of the underlying Gurobi model.

GRBModel &	getModel ()
	Get the underlying Gurobi model.

void	writeCompressed (std::string filename, std::string format="")
	Output model in compressed format. More...

void	forceModelUpdate ()
	Force model update. More...

Protected Member Functions
virtual SolveExitStatus	_solve ()


virtual Value	_getPrimal (int i) const


virtual Value	_getDual (int i) const


virtual Value	_getPrimalValue () const


virtual Value	_getPrimalRay (int i) const


virtual Value	_getDualRay (int i) const


virtual ProblemType	_getPrimalType () const


virtual ProblemType	_getDualType () const


virtual VarStatus	_getColStatus (int i) const


virtual VarStatus	_getRowStatus (int i) const


virtual const char *	_solverName () const


Protected Member Functions inherited from lemon::GrbBase
	GrbBase (const GRBEnv &env=_defEnv)
	Default constructor. More...

void	_updateModel (bool what)

void	_copyExprToConstr (int row)

void	_copyExprToConstr ()

virtual int	_addCol ()


virtual int	_addRow ()


virtual int	_addRow (Value l, ExprIterator b, ExprIterator e, Value u)


virtual void	_eraseCol (int i)


virtual void	_eraseRow (int i)


virtual void	_getColName (int col, std::string &name) const


virtual void	_setColName (int col, const std::string &name)


virtual int	_colByName (const std::string &name) const


virtual void	_getRowName (int row, std::string &name) const


virtual void	_setRowName (int row, const std::string &name)


virtual int	_rowByName (const std::string &name) const


virtual void	_setRowCoeffs (int row, ExprIterator b, ExprIterator e)


virtual void	_getRowCoeffs (int row, InsertIterator b) const


virtual void	_setColCoeffs (int col, ExprIterator b, ExprIterator e)


virtual void	_getColCoeffs (int col, InsertIterator b) const


virtual void	_setCoeff (int row, int col, Value value)
	Set one element of the coefficient matrix.

virtual Value	_getCoeff (int row, int col) const
	Get one element of the coefficient matrix.

virtual void	_setColLowerBound (int i, Value value)

virtual Value	_getColLowerBound (int i) const
	More...

virtual void	_setColUpperBound (int i, Value value)

virtual Value	_getColUpperBound (int i) const
	More...

virtual void	_setRowLowerBound (int i, Value value)

virtual Value	_getRowLowerBound (int i) const
	More...

virtual void	_setRowUpperBound (int i, Value value)

virtual Value	_getRowUpperBound (int i) const
	More...

virtual void	_setObjCoeffs (ExprIterator b, ExprIterator e)


virtual void	_getObjCoeffs (InsertIterator b) const


virtual void	_setObjCoeff (int i, Value obj_coef)


virtual Value	_getObjCoeff (int i) const


virtual void	_setSense (Sense)


virtual Sense	_getSense () const


virtual void	_clear ()


virtual void	_messageLevel (MessageLevel)


virtual void	_write (std::string file, std::string format) const
	Write model to file (disabled)

Additional Inherited Members
Static Public Member Functions inherited from lemon::GrbBase
static GRBEnv	getDefaultEnv ()
	Get default Gurobi environment. More...

Protected Attributes inherited from lemon::GrbBase
GRBModel	_model
	Underlying Gurobi model.

bool	_dirtyVars
	Dirty bit for variables.

bool	_dirtyConstrs
	Dirty bit for constraints.

GRBEnv	_env
	Gurobi environment for the model.

std::map< std::string, int >	_varNameToId
	Map variable names to id.

std::vector< GRBVar >	_idToVar
	Map id to variables.

std::vector< std::string >	_idToVarName
	Map variable id to names.

std::vector< bool >	_deletedVars
	List of deleted variables.

std::vector< GRBLinExpr >	_idToExpr
	Linear expression of each constraint.

std::vector< bool >	_exprCopiedToConstr

std::map< std::string, int >	_constrNameToId
	Map constraint names to id.

std::vector< GRBConstr >	_idToConstr
	Map id to constraints.

std::vector< std::string >	_idToConstrName
	Map constraint id to names.

std::vector< GRBVar >	_constrAux
	Needed because LEMON allows constraints with both upper and lower bounds.

std::vector< bool >	_deletedConstrs
	List of deleted variables.

Static Protected Attributes inherited from lemon::GrbBase
static GRBEnv	_defEnv = GRBEnv()
	Default Gurobi environment.

Detailed Description

Interface for the Gurobi LP solver.

This class implements the interface of the Gurobi LP solver.

Warning: We recommend creating all variables before adding the constraints. Before adding the constraints, and also before solving the model, please update it using forceModelUpdate(). See minlca/lp-model.hh for an example.

Definition at line 249 of file grb.h.

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

lemon/grb.h
lemon/grb.cc

Public Member Functions

Protected Member Functions

Additional Inherited Members

Detailed Description