public class PropAtMostNValues extends Propagator<IntVar>
aCause, ACTIVE, constraint, LOGGER, NEW, PASSIVE, priority, reactToFineEvt, REIFIED, solver, vars
Constructor and Description |
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PropAtMostNValues(IntVar[] variables,
gnu.trove.list.array.TIntArrayList concernedValues,
IntVar nValues)
Propagator for the NValues constraint
The number of distinct values among concerned values in the set of variables vars is exactly equal to nValues
No level of consistency for the filtering
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Modifier and Type | Method and Description |
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void |
duplicate(Solver solver,
gnu.trove.map.hash.THashMap<Object,Object> identitymap)
Duplicate the current propagator.
|
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. |
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
public PropAtMostNValues(IntVar[] variables, gnu.trove.list.array.TIntArrayList concernedValues, IntVar nValues)
variables
- array of variablesconcernedValues
- will be sorted!nValues
- integer variablepublic void propagate(int evtmask) throws ContradictionException
Propagator
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:
propagate
in class Propagator<IntVar>
evtmask
- type of propagation event this
must consider.ContradictionException
- when a contradiction occurs, like domain wipe out or other incoherencies.public ESat isEntailed()
Propagator
this
is entailed according to the current state of its internal structure.
At least, should check the satisfaction of this
(when all is instantiated).isEntailed
in class Propagator<IntVar>
public void duplicate(Solver solver, gnu.trove.map.hash.THashMap<Object,Object> identitymap)
Propagator
duplicate
in class Propagator<IntVar>
solver
- the target solveridentitymap
- a map to ensure uniqueness of objectsCopyright © 2015. All rights reserved.