jopt.csp.spi.search.actions
Class InstantiateIntegerAction

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

All Implemented Interfaces:

jopt.csp.search.SearchAction

public class InstantiateIntegerAction

extends AbstractSearchNodeAction

Action that will attempt to assign a value to an integer 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

InstantiateIntegerAction(jopt.csp.variable.CspIntVariable var)
Creates new instantiation action, using default selector

InstantiateIntegerAction(jopt.csp.variable.CspIntVariable var, jopt.csp.search.IntegerSelector selector)
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

InstantiateIntegerAction

public InstantiateIntegerAction(jopt.csp.variable.CspIntVariable var,
                                jopt.csp.search.IntegerSelector selector)

Creates new instantiation action

Parameters:

var - Variable to instantiate

selector - Selector to use in deciding which value in the domain of the variable to try next, as we attempt to reduce the domain of the variable. If none is given, the default is smallest value in domain first.

InstantiateIntegerAction

public InstantiateIntegerAction(jopt.csp.variable.CspIntVariable var)

Creates new instantiation action, using default selector

Parameters:

var - Variable to instantiate

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()