Module org.chocosolver
Class ClauseStore.SignedClause
- java.lang.Object
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- org.chocosolver.solver.constraints.Propagator<IntVar>
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- org.chocosolver.solver.constraints.nary.clauses.ClauseStore.SignedClause
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- All Implemented Interfaces:
Comparable<Propagator>
,ICause
,Identity
- Enclosing class:
- ClauseStore
public class ClauseStore.SignedClause extends Propagator<IntVar>
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Field Summary
Fields Modifier and Type Field Description protected static byte
F2
Mask that indicates pos[1] as false-
Fields inherited from class org.chocosolver.solver.constraints.Propagator
ACTIVE, constraint, DEFAULT_EXPL, model, operations, OUTPUT_DEFAULT_EXPL, priority, reactToFineEvt, state, vars
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Method Summary
All Methods Instance Methods Concrete Methods Modifier and Type Method Description int
cardinality()
void
explain(ExplanationForSignedClause explanation, ValueSortedMap<IntVar> front, Implications ig, int p)
Clausal explanation for this cause.boolean
isConnected()
ESat
isEntailed()
Check wetherthis
is entailed according to the current state of its internal structure.void
propagate(int evtmask)
Call the main filtering algorithm to apply to theDomain
of theVariable
objects.String
toString()
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Methods inherited from class org.chocosolver.solver.constraints.Propagator
addVariable, arity, compareTo, defaultExplain, doFinePropagation, doFlush, doSchedule, doScheduleEvent, dynPriority, equals, fails, forcePropagate, forcePropagationOnBacktrack, forEachIntVar, getConstraint, getId, getModel, getNbVars, getPosition, getPriority, getPropagationConditions, getVar, getVars, getVIndice, getVIndices, hashCode, isActive, isCompletelyInstantiated, isPassive, isReified, isReifiedAndSilent, isScheduled, isStateLess, linkVariables, propagate, reactToFineEvent, reifiedWith, setActive, setActive0, setPassive, setPosition, setReifiedSilent, setReifiedTrue, setVIndices, unlinkVariables, unschedule
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Field Detail
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F2
protected static final byte F2
Mask that indicates pos[1] as false- See Also:
- Constant Field Values
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Method Detail
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cardinality
public final int cardinality()
- Returns:
- the number of literals in this
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isConnected
public final boolean isConnected()
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propagate
public final void propagate(int evtmask) throws ContradictionException
Description copied from class:Propagator
Call the main filtering algorithm to apply to theDomain
of theVariable
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 classPropagator<IntVar>
- Parameters:
evtmask
- type of propagation eventthis
must consider.- Throws:
ContradictionException
- when a contradiction occurs, like domain wipe out or other incoherencies.
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isEntailed
public final ESat isEntailed()
Description copied from class:Propagator
Check wetherthis
is entailed according to the current state of its internal structure. At least, should check the satisfaction ofthis
(when all is instantiated).- Specified by:
isEntailed
in classPropagator<IntVar>
- Returns:
- ESat.TRUE if entailed, ESat.FALSE if not entailed, ESat.UNDEFINED if unknown
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explain
public void explain(ExplanationForSignedClause explanation, ValueSortedMap<IntVar> front, Implications ig, int p)
Description copied from interface:ICause
Clausal explanation for this cause.This method must filled explanations with inferred literals. These literals are inferred from the analysis of (a subset of) conflicting nodes stored in front, the implication graph ig and the current node in conflict, not yet contained in front.
Optionally, this method can update front by looking for a predecessor of any node that seems more relevant than the declared one.
- Specified by:
explain
in interfaceICause
- Overrides:
explain
in classPropagator<IntVar>
- Parameters:
explanation
- explanation to computefront
- ordered map of (variable,node> in the conflict frontier of the implication graph.ig
- an implication graphp
- the pivot node out of front
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toString
public String toString()
- Overrides:
toString
in classPropagator<IntVar>
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