Module ojalgo

Package org.ojalgo.optimisation

Class ExpressionsBasedModel.Presolver

java.lang.Object

org.ojalgo.optimisation.ExpressionsBasedModel.Simplifier<Expression,ExpressionsBasedModel.Presolver>

org.ojalgo.optimisation.ExpressionsBasedModel.Presolver

All Implemented Interfaces:

java.lang.Comparable<ExpressionsBasedModel.Presolver>

Direct Known Subclasses:

SpecialOrderedSet

Enclosing class:

ExpressionsBasedModel

public abstract static class ExpressionsBasedModel.Presolver
extends ExpressionsBasedModel.Simplifier<Expression,ExpressionsBasedModel.Presolver>

Constructor Summary

Constructors

Modifier	Constructor	Description
protected	Presolver(int executionOrder)

Method Summary

Modifier and Type	Method	Description
(package private) boolean	isApplicable(Expression target)
abstract boolean	simplify(Expression expression, java.util.Set<Structure1D.IntIndex> remaining, java.math.BigDecimal lower, java.math.BigDecimal upper, NumberContext precision)

Methods inherited from class org.ojalgo.optimisation.ExpressionsBasedModel.Simplifier

compareTo, equals, getExecutionOrder, hashCode

Methods inherited from class java.lang.Object

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

Constructor Detail

Presolver

protected Presolver(int executionOrder)

Method Detail

simplify

public abstract boolean simplify(Expression expression,
                                 java.util.Set<Structure1D.IntIndex> remaining,
                                 java.math.BigDecimal lower,
                                 java.math.BigDecimal upper,
                                 NumberContext precision)

Returns:

True if any model entity was modified so that a re-run of the presolvers is necessary - typically when/if a variable was fixed.

isApplicable

boolean isApplicable(Expression target)

Specified by:

isApplicable in class ExpressionsBasedModel.Simplifier<Expression,ExpressionsBasedModel.Presolver>