org.chocosolver.solver.constraints.nary.circuit

Class PropCircuit_ArboFiltering

java.lang.Object

org.chocosolver.solver.constraints.Propagator<IntVar>

org.chocosolver.solver.constraints.nary.circuit.PropCircuit_ArboFiltering

All Implemented Interfaces:

Serializable, Comparable<Propagator>, ICause, Identity

Direct Known Subclasses:

PropCircuit_AntiArboFiltering

public class PropCircuit_ArboFiltering
extends Propagator<IntVar>

See Also:

Serialized Form

Field Summary

Fields

Modifier and Type	Field and Description
protected CircuitConf	conf
protected DirectedGraph	connectedGraph
protected AbstractLengauerTarjanDominatorsFinder	domFinder
protected int	n
protected int	offSet
protected Random	rd

Fields inherited from class org.chocosolver.solver.constraints.Propagator

aCause, ACTIVE, constraint, LOGGER, NEW, PASSIVE, priority, reactToFineEvt, REIFIED, solver, vars

Constructor Summary

Constructors

Constructor and Description
PropCircuit_ArboFiltering(IntVar[] succs, int offSet, CircuitConf conf)

Method Summary

Methods

Modifier and Type	Method and Description
void	duplicate(Solver solver, gnu.trove.map.hash.THashMap<Object,Object> identitymap) Duplicate the current propagator.
protected void	filterFromDom(int duplicatedNode)
ESat	isEntailed() Check wether this is entailed according to the current state of its internal structure.
void	propagate(int evtmask) Call the main filtering algorithm to apply to the Domain of the Variable objects.

Methods inherited from class org.chocosolver.solver.constraints.Propagator

addVariable, advise, arity, compareTo, contradiction, decNbPendingEvt, defineIn, dynPriority, flushPendingEvt, forcePropagate, getConstraint, getId, getNbPendingEvt, getNbVars, getPriority, getPropagationConditions, getSolver, getVar, getVars, getVIndices, hashCode, incNbPendingEvt, isActive, isCompletelyInstantiated, isPassive, isReifiedAndSilent, isStateLess, propagate, reactToFineEvent, setActive, setPassive, setReifiedSilent, setReifiedTrue, setVIndices, toString, why

Methods inherited from class java.lang.Object

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

Field Detail

connectedGraph

protected DirectedGraph connectedGraph

n

protected int n

domFinder

protected AbstractLengauerTarjanDominatorsFinder domFinder

offSet

protected int offSet

rd

protected Random rd

conf

protected CircuitConf conf

Constructor Detail

PropCircuit_ArboFiltering

public PropCircuit_ArboFiltering(IntVar[] succs,
                         int offSet,
                         CircuitConf conf)

Method Detail

propagate

public void propagate(int evtmask)
               throws ContradictionException

Description copied from class: Propagator

Call the main filtering algorithm to apply to the Domain of the Variable objects. It considers the current state of this objects to remove some values from domains and/or instantiate some variables. Calling this method is done from 2 (and only 2) steps:
- at the initial propagation step,
- when involved in a reified constraint.
It should initialized the internal data structure and apply filtering algorithm from scratch.

Specified by:

propagate in class Propagator<IntVar>

Parameters:

evtmask - type of propagation event this must consider.

Throws:

ContradictionException - when a contradiction occurs, like domain wipe out or other incoherencies.

filterFromDom

protected void filterFromDom(int duplicatedNode)
                      throws ContradictionException

Throws:

ContradictionException

isEntailed

public ESat isEntailed()

Description copied from class: Propagator

Check wether this is entailed according to the current state of its internal structure. At least, should check the satisfaction of this (when all is instantiated).

Specified by:

isEntailed in class Propagator<IntVar>

Returns:

ESat.TRUE if entailed, ESat.FALSE if not entailed, ESat.UNDEFINED if unknown

duplicate

public void duplicate(Solver solver,
             gnu.trove.map.hash.THashMap<Object,Object> identitymap)

Description copied from class: Propagator

Duplicate the current propagator. A restriction is that the resolution process should have not begun yet. That's why state of the propagator may not be duplicated.

Overrides:

duplicate in class Propagator<IntVar>

Parameters:

solver - the target solver

identitymap - a map to ensure uniqueness of objects