public class PropAmongGAC extends Propagator<IntVar>
| Modifier and Type | Class and Description |
|---|---|
protected static class |
PropAmongGAC.RemProc |
| Modifier and Type | Field and Description |
|---|---|
protected IIntDeltaMonitor[] |
idms |
protected boolean |
needFilter |
protected PropAmongGAC.RemProc |
rem_proc |
aCause, ACTIVE, constraint, LOGGER, NEW, PASSIVE, priority, reactToFineEvt, REIFIED, solver, vars| Constructor and Description |
|---|
PropAmongGAC(IntVar[] variables,
int[] values) |
| Modifier and Type | Method and Description |
|---|---|
boolean |
advise(int varIdx,
int mask)
Advise a propagator of a modification occurring on one of its variables,
and decide if
this should be scheduled. |
void |
duplicate(Solver solver,
gnu.trove.map.hash.THashMap<Object,Object> identitymap)
Duplicate the current propagator.
|
protected void |
filter() |
int |
getPropagationConditions(int idx)
Return the specific mask indicating the variable events on which this
Propagator object can react. |
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. |
void |
propagate(int varIdx,
int mask)
Incremental filtering algorithm defined within the
Propagator, called whenever the variable
of index idxVarInProp has changed. |
String |
toString() |
addVariable, arity, compareTo, contradiction, decNbPendingEvt, defineIn, dynPriority, flushPendingEvt, forcePropagate, getConstraint, getId, getNbPendingEvt, getNbVars, getPriority, getSolver, getVar, getVars, getVIndices, hashCode, incNbPendingEvt, isActive, isCompletelyInstantiated, isPassive, isReifiedAndSilent, isStateLess, reactToFineEvent, setActive, setPassive, setReifiedSilent, setReifiedTrue, setVIndices, whyprotected final IIntDeltaMonitor[] idms
protected final PropAmongGAC.RemProc rem_proc
protected boolean needFilter
public PropAmongGAC(IntVar[] variables, int[] values)
public int getPropagationConditions(int idx)
PropagatorPropagator object can react.getPropagationConditions in class Propagator<IntVar>idx - index of the variable within the propagatorREMOVE and/or INSTANTIATE
and/or DECUPP and/or INCLOWpublic boolean advise(int varIdx,
int mask)
Propagatorthis should be scheduled.
At least, this method SHOULD check the propagation condition of the event received.
In addition, this method can be used to update internal state of this.
This method can returns true even if the propagator is already scheduled.advise in class Propagator<IntVar>varIdx - index of the modified variablemask - modification event masktrue if this should be scheduled, false otherwise.public void propagate(int evtmask)
throws ContradictionException
PropagatorDomain 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.protected void filter()
throws ContradictionException
ContradictionExceptionpublic void propagate(int varIdx,
int mask)
throws ContradictionException
PropagatorPropagator, called whenever the variable
of index idxVarInProp has changed. This method calls a CUSTOM_PROPAGATION (coarse-grained) by default.
This method should be overridden if the argument reactToFineEvt is set to true in the constructor.
Otherwise, it executes propagate(PropagatorEventType.CUSTOM_PROPAGATION.getStrengthenedMask());
propagate in class Propagator<IntVar>varIdx - index of the variable var in thismask - type of eventContradictionException - if a contradiction occurspublic ESat isEntailed()
Propagatorthis 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 String toString()
toString in class Propagator<IntVar>public void duplicate(Solver solver, gnu.trove.map.hash.THashMap<Object,Object> identitymap)
Propagatorduplicate in class Propagator<IntVar>solver - the target solveridentitymap - a map to ensure uniqueness of objectsCopyright © 2015. All rights reserved.