jopt.csp.spi.search.actions
Class InstantiateDoubleAction

java.lang.Object
  jopt.csp.spi.search.tree.AbstractSearchNodeAction
      jopt.csp.spi.search.actions.InstantiateDoubleAction

All Implemented Interfaces:

jopt.csp.search.SearchAction

public class InstantiateDoubleAction

extends AbstractSearchNodeAction

Action that will attempt to assign a value to an real-number based variable using the search tree. In this context "instantiate" is constraint satisfaction terminology for exploring possible values in the domain of a variable trying to find one that satisfies the constraints; it has nothing to do with the Java instantiation of a class.

Constructor Summary

InstantiateDoubleAction(jopt.csp.variable.CspDoubleVariable var, double precision)
Creates new instantiation action

InstantiateDoubleAction(jopt.csp.variable.CspDoubleVariable var, double precision, boolean minFirst)
Creates new instantiation action

Method Summary

jopt.csp.search.SearchAction	performAction() Called by search tree to execute this action.
java.lang.String	toString()

Methods inherited from class java.lang.Object

equals, getClass, hashCode, notify, notifyAll, wait, wait, wait

Constructor Detail

InstantiateDoubleAction

public InstantiateDoubleAction(jopt.csp.variable.CspDoubleVariable var,
                               double precision)

Creates new instantiation action

Parameters:

var - Variable to instantiate

precision - Minimum precision to which variable domain will be reduced

InstantiateDoubleAction

public InstantiateDoubleAction(jopt.csp.variable.CspDoubleVariable var,
                               double precision,
                               boolean minFirst)

Creates new instantiation action

Parameters:

var - Variable to instantiate

precision - Minimum precision to which variable domain will be reduced

minFirst - True if bottom half of domain should be used to restrict domain first, false to use upper half

Method Detail

performAction

public jopt.csp.search.SearchAction performAction()
                                           throws jopt.csp.variable.PropagationFailureException

Called by search tree to execute this action.

Returns:

Next action to execute in search

Throws:

jopt.csp.variable.PropagationFailureException

toString

public java.lang.String toString()