localsolver.LSSolution Class Reference

Detailed Description

Solution to the optimization model.

A solution carries the values of all expressions in the model. It is used to retrieve the values of all expressions (getting the solution), or to set the values of some decisions (setting the solution).

See Also

LSSolutionStatus

Public Member Functions
LocalSolver	GetLocalSolver ()
	Returns the LocalSolver object associated to this solution.
void	SetValue (LSExpression expr, long value)
	Sets the value of the given expression in this solution.
void	SetValue (LSExpression expr, double value)
	Sets the value of the given expression in this solution.
void	SetIntValue (LSExpression expr, long value)
	Sets the value of the given expression in this solution.
void	SetDoubleValue (LSExpression expr, double value)
	Sets the value of the given expression in this solution.
long	GetValue (LSExpression expr)
	Returns the value of the given expression in this solution.
double	GetDoubleValue (LSExpression expr)
	Returns the value of the given expression in this solution.
long	GetIntValue (LSExpression expr)
	Returns the value of the given expression in this solution.
LSCollection	GetCollectionValue (LSExpression expr)
	Returns the value of the given expression in this solution.
bool	IsViolated (LSExpression expr)
	Returns true if the given expression is violated in this solution.
IEnumerable< LSExpression >	GetViolatedExpressions ()
	Returns the collection of violated expressions in this solution.
LSSolutionStatus	GetStatus ()
	Returns the status of the solution.
void	Clear ()
	Clear the solution and set all decisions to zero.

Member Function Documentation

LocalSolver localsolver.LSSolution.GetLocalSolver

(

)

Returns the LocalSolver object associated to this solution.

Returns

LocalSolver object

void localsolver.LSSolution.SetValue	(	LSExpression	expr,
		long	value
	)

Sets the value of the given expression in this solution.

Only decisions can be set. Only allowed in state LSState::Paused or LSState::Stopped. Only allowed if this expression is an integer or a boolean. If the solver was not launched, this value will be used as an initial value for the decision. This method has the same behavior as LSSolution::SetIntValue.

Parameters

expr	Decision.
value	Value assigned to the decision in this solution.

See Also

LSExpression.IsDecision, LSExpression.IsInt, LSExpression.IsBool

void localsolver.LSSolution.SetValue	(	LSExpression	expr,
		double	value
	)

Sets the value of the given expression in this solution.

Only decisions can be set. Only allowed in state LSState::Paused or LSState::Stopped. Only allowed if this expression is a double. If the solver was not launched, this value will be used as an initial value for the decision. This method has the same behavior as LSSolution::SetDoubleValue.

Parameters

expr	Decision.
value	Value assigned to the decision in this solution.

See Also

LSExpression.IsDecision, LSExpression.IsDouble

void localsolver.LSSolution.SetIntValue	(	LSExpression	expr,
		long	value
	)

Sets the value of the given expression in this solution.

Only decisions can be set. Only allowed in state LSState::Paused or LSState::Stopped. Only allowed if this expression is an integer or a boolean. If the solver was not launched, this value will be used as an initial value for the decision.

Parameters

expr	Decision.
value	Value assigned to the decision in this solution.

See Also

LSExpression.IsDecision, LSExpression.IsInt

Since version 3.0

void localsolver.LSSolution.SetDoubleValue	(	LSExpression	expr,
		double	value
	)

Sets the value of the given expression in this solution.

Only decisions can be set. Only allowed in state LSState::Paused or LSState::Stopped. If the solver was not launched, this value will be used as an initial value for the decision. Only allowed if this expression is a double.

Parameters

expr	Decision.
value	Value assigned to the decision in this solution.

See Also

LSExpression.IsDecision, LSExpression.IsDouble

Since version 3.0

long localsolver.LSSolution.GetValue

(

LSExpression

expr

)

Returns the value of the given expression in this solution.

Only allowed in states LSState::Paused or LSState::Stopped. Only allowed if this expression is an integer or a boolean.

Parameters

expr	Expression.

Returns

Value of the expression in this solution.

See Also

LSExpression.IsInt, LSExpression.IsBool

double localsolver.LSSolution.GetDoubleValue

(

LSExpression

expr

)

Returns the value of the given expression in this solution.

Only allowed in states LSState::Paused or LSState::Stopped. Only allowed if this expression is a double.

Parameters

expr	Expression.

Returns

Value of the expression in this solution.

See Also

LSExpression.IsDouble

Since version 3.0

long localsolver.LSSolution.GetIntValue

(

LSExpression

expr

)

Returns the value of the given expression in this solution.

Only allowed in states LSState::Paused or LSState::Stopped. Only allowed if this expression is an integer or a boolean.

Parameters

expr	Expression.

Returns

Value of the expression in this solution.

See Also

LSExpression.IsInt, LSExpression.IsBool

Since version 3.0

LSCollection localsolver.LSSolution.GetCollectionValue

(

LSExpression

expr

)

Returns the value of the given expression in this solution.

Only allowed in states LSState::Paused or LSState::Stopped. Only allowed if this expression is an collection (list).

Parameters

expr	Expression.

Returns

Value of the expression in this solution.

See Also

LSExpression.IsCollection

Since version 5.5

bool localsolver.LSSolution.IsViolated

(

LSExpression

expr

)

Returns true if the given expression is violated in this solution.

An expression can be violated in 3 cases:

1. It is a constraint and its value is 0.
2. It is a a double and its value is NaN (Not A Number).
3. It is an integer or boolean with no valid value (arithmetic or out of bounds exception).

Only allowed in states LSState::Paused or LSState::Stopped.

Parameters

expr	Expression.

Returns

True if this expression is violated in this solution.

Since version 5.5

IEnumerable<LSExpression> localsolver.LSSolution.GetViolatedExpressions

(

)

Returns the collection of violated expressions in this solution.

LSSolutionStatus localsolver.LSSolution.GetStatus

(

)

Returns the status of the solution.

Only allowed in states LSState::Paused or LSState::Stopped.

Returns

Status of the solution.

See Also

LSSolutionStatus

void localsolver.LSSolution.Clear

(

)

Clear the solution and set all decisions to zero.

Only allowed in state LSState::Stopped.