the LindoSolver class solves problems using Lindo. More...

#include <OSLindoSolver.h>

Inheritance diagram for LindoSolver:

Collaboration diagram for LindoSolver:

Public Member Functions
	LindoSolver ()
	the LindoSolver class constructor

	~LindoSolver ()
	the LindoSolver class destructor

virtual void	solve ()
	solve results in an instance being read into the Lindo data structures and optimized

virtual void	buildSolverInstance () throw (ErrorClass)
	buildSolverInstance is a virtual function – the actual solvers will implement their own buildSolverInstance method – the solver instance is the instance the individual solver sees in its API

virtual void	setSolverOptions () throw (ErrorClass)
	The implementation of the virtual functions.

bool	optimize ()
	invoke the Lindo API solver

bool	processVariables ()
	read the OSiL instance variables and put these into the LINDO API variables

bool	processConstraints ()
	read the OSiL instance constraints and put these into the LINDO API constraints

bool	generateLindoModel ()
	create the LINDO environment and read the problem into the internal LINDO data structures

bool	addSlackVars ()
	LINDO does not handle constraints with upper and lower bounds this method is part of kludge where we add a new variable to handle the bounds.

bool	processQuadraticTerms ()
	read the quadratic terms in the model

bool	processNonlinearExpressions ()
	read the nonlinear terms in the model

void	dataEchoCheck ()
	use this for debugging, print out the instance that the solver thinks it has and compare this with the OSiL file

Public Member Functions inherited from DefaultSolver
virtual void	solve ()=0
	solve is a virtual function – the actual solvers will implement their own solve method

virtual void	buildSolverInstance ()=0
	buildSolverInstance is a virtual function – the actual solvers will implement their own buildSolverInstance method – the solver instance is the instance the individual solver sees in its API

virtual void	setSolverOptions ()=0
	setSolverOptions is a virtual function – the actual solvers will implement their own setSolverOptions method – the solver options are the options the individual solver sees in its API

	DefaultSolver ()
	default constructor.

virtual	~DefaultSolver ()=0
	default destructor.

Public Attributes
OSiLReader *	m_osilreader
	m_osilreader is an OSiLReader object used to create an osinstance from an osil string if needed

Public Attributes inherited from DefaultSolver
std::string	osil
	osil holds the problem instance as a std::string

std::string	osol
	osol holds the options for the solver

std::string	osrl
	osrl holds the solution or result of the model

OSInstance *	osinstance
	osinstance holds the problem instance in-memory as an OSInstance object

OSOption *	osoption
	osoption holds the solver options in-memory as an OSOption object

OSResult *	osresult
	osresult holds the solution or result of the model in-memory as an OSResult object

std::string	sSolverName
	sSolverName is the name of the Coin solver used, e.g.

bool	bCallbuildSolverInstance
	bCallbuildSolverInstance is set to true if buildSolverService has been called

bool	bSetSolverOptions
	bSetSolverOptions is set to true if setSolverOptions has been called, false otherwise

Protected Member Functions
void	lindoAPIErrorCheck (std::string errormsg)
	Lindo's generalized error Reporting function.

Detailed Description

the LindoSolver class solves problems using Lindo.

Author: Robert Fourer, Jun Ma, Kipp Martin

Version: 1.0, 03/14/2004

Since: OS 1.0

Remarks: this class takes an OSiL instance and optimizes it using the Lindo API

Definition at line 49 of file OSLindoSolver.h.

Constructor & Destructor Documentation

◆ LindoSolver()

LindoSolver::LindoSolver ( )

the LindoSolver class constructor

◆ ~LindoSolver()

LindoSolver::~LindoSolver ( )

the LindoSolver class destructor

Member Function Documentation

◆ solve()

virtual void LindoSolver::solve ( )

virtual

solve results in an instance being read into the Lindo data structures and optimized

Implements DefaultSolver.

◆ buildSolverInstance()

virtual void LindoSolver::buildSolverInstance	(		)
throw	(	ErrorClass
	)

virtual

buildSolverInstance is a virtual function – the actual solvers will implement their own buildSolverInstance method – the solver instance is the instance the individual solver sees in its API

Implements DefaultSolver.

◆ setSolverOptions()

void LindoSolver::setSolverOptions	(		)
throw	(	ErrorClass
	)

virtual

The implementation of the virtual functions.

Returns: void.

Implements DefaultSolver.

◆ optimize()

bool LindoSolver::optimize ( )

invoke the Lindo API solver

Returns: true if an exception is not thrown.

◆ processVariables()

bool LindoSolver::processVariables ( )

read the OSiL instance variables and put these into the LINDO API variables

Returns: true if an exception is not thrown.

◆ processConstraints()

bool LindoSolver::processConstraints ( )

read the OSiL instance constraints and put these into the LINDO API constraints

Returns: true if an exception is not thrown.

◆ generateLindoModel()

bool LindoSolver::generateLindoModel ( )

create the LINDO environment and read the problem into the internal LINDO data structures

Returns: true if an exception is not thrown.

◆ addSlackVars()

bool LindoSolver::addSlackVars ( )

LINDO does not handle constraints with upper and lower bounds this method is part of kludge where we add a new variable to handle the bounds.

Returns: true if an exception is not thrown.

◆ processQuadraticTerms()

bool LindoSolver::processQuadraticTerms ( )

read the quadratic terms in the model

Returns: true if an exception is not thrown.

◆ processNonlinearExpressions()

bool LindoSolver::processNonlinearExpressions ( )

read the nonlinear terms in the model

Returns: true if an exception is not thrown.

◆ dataEchoCheck()

void LindoSolver::dataEchoCheck ( )

use this for debugging, print out the instance that the solver thinks it has and compare this with the OSiL file

◆ lindoAPIErrorCheck()

void LindoSolver::lindoAPIErrorCheck ( std::string errormsg )

protected

Lindo's generalized error Reporting function.

Member Data Documentation

◆ m_osilreader

OSiLReader* LindoSolver::m_osilreader

m_osilreader is an OSiLReader object used to create an osinstance from an osil string if needed

Definition at line 129 of file OSLindoSolver.h.

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

/builddir/build/BUILD/OS-2.10.2/src/OSSolverInterfaces/OSLindoSolver.h

Public Member Functions

Public Attributes

Protected Member Functions

Detailed Description

Constructor & Destructor Documentation

◆ LindoSolver()

◆ ~LindoSolver()

Member Function Documentation

◆ solve()

◆ buildSolverInstance()

◆ setSolverOptions()

◆ optimize()

◆ processVariables()

◆ processConstraints()

◆ generateLindoModel()

◆ addSlackVars()

◆ processQuadraticTerms()

◆ processNonlinearExpressions()

◆ dataEchoCheck()

◆ lindoAPIErrorCheck()

Member Data Documentation

◆ m_osilreader