Class ExpressionsBasedModel.IntegrationWrapper

java.lang.Object

org.ojalgo.optimisation.ExpressionsBasedModel.Integration<Optimisation.Solver>

org.ojalgo.optimisation.ExpressionsBasedModel.IntegrationWrapper

All Implemented Interfaces:

Optimisation, Optimisation.Integration<ExpressionsBasedModel, Optimisation.Solver>

Enclosing class:

ExpressionsBasedModel

static final class ExpressionsBasedModel.IntegrationWrapper
extends ExpressionsBasedModel.Integration<Optimisation.Solver>

Nested Class Summary

Nested classes/interfaces inherited from interface Optimisation

Optimisation.Constraint, Optimisation.ConstraintType, Optimisation.Integration<M,S>, Optimisation.Model, Optimisation.Objective, Optimisation.Options, Optimisation.ProblemStructure, Optimisation.Result, Optimisation.Sense, Optimisation.Solver, Optimisation.State

Field Summary

Fields

Modifier and Type	Field	Description
private final Optimisation.Integration<ExpressionsBasedModel, ?>	myDelegate

Constructor Summary

Constructors

Constructor	Description
IntegrationWrapper(Optimisation.Integration<ExpressionsBasedModel, ?> delegate)

Method Summary

Modifier and Type	Method	Description
Optimisation.Solver	build(ExpressionsBasedModel model)	An integration must be able to instantiate a solver that can handle (any) model instance.
boolean	isCapable(ExpressionsBasedModel model)
Optimisation.Result	toModelState(Optimisation.Result solverState, ExpressionsBasedModel model)	The reverse of ExpressionsBasedModel.Integration.toSolverState(Optimisation.Result, ExpressionsBasedModel).
Optimisation.Result	toSolverState(Optimisation.Result modelState, ExpressionsBasedModel model)	This default implementation assumes the solver state and model state are identical, and simply returns the supplied model state.

Methods inherited from class ExpressionsBasedModel.Integration

expandFreeToFull, extractSolverState, getIndexInSolver, isSwitch, newValidator, reduceFullToFree, setSwitch, withCapabilityPredicate, withOptionsModifier

Methods inherited from class Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Details

myDelegate

private final Optimisation.Integration<ExpressionsBasedModel, ?> myDelegate

Constructor Details

IntegrationWrapper

IntegrationWrapper(Optimisation.Integration<ExpressionsBasedModel, ?> delegate)

Method Details

build

public Optimisation.Solver build(ExpressionsBasedModel model)

Description copied from interface: Optimisation.Integration

An integration must be able to instantiate a solver that can handle (any) model instance.

isCapable

public boolean isCapable(ExpressionsBasedModel model)

Returns:

true if this solver (integration) can handle the input model

toModelState

public Optimisation.Result toModelState(Optimisation.Result solverState,
 ExpressionsBasedModel model)

Description copied from class: ExpressionsBasedModel.Integration

The reverse of ExpressionsBasedModel.Integration.toSolverState(Optimisation.Result, ExpressionsBasedModel).

Specified by:

toModelState in interface Optimisation.Integration<ExpressionsBasedModel, Optimisation.Solver>

Overrides:

toModelState in class ExpressionsBasedModel.Integration<Optimisation.Solver>

See Also:

• ExpressionsBasedModel.Integration.reduceFullToFree(Optimisation.Result, ExpressionsBasedModel, DenseArray.Factory)
• ExpressionsBasedModel.Integration.expandFreeToFull(Optimisation.Result, ExpressionsBasedModel, DenseArray.Factory)

toSolverState

public Optimisation.Result toSolverState(Optimisation.Result modelState,
 ExpressionsBasedModel model)

Description copied from class: ExpressionsBasedModel.Integration

This default implementation assumes the solver state and model state are identical, and simply returns the supplied model state.

In any case where the set of variables present in the solver does not match what's in the model one-to-one, this method and its reciprocal ExpressionsBasedModel.Integration.toModelState(Optimisation.Result, ExpressionsBasedModel) needs to be overridden with custom mapping implementations.

A very common case is when the solver only works with free (not eliminated by the pre-solver) variables. There are helper methods to do just that.

Specified by:

toSolverState in interface Optimisation.Integration<ExpressionsBasedModel, Optimisation.Solver>

Overrides:

toSolverState in class ExpressionsBasedModel.Integration<Optimisation.Solver>

See Also:

• ExpressionsBasedModel.Integration.reduceFullToFree(Optimisation.Result, ExpressionsBasedModel, DenseArray.Factory)
• ExpressionsBasedModel.Integration.expandFreeToFull(Optimisation.Result, ExpressionsBasedModel, DenseArray.Factory)