- java.lang.Object
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- org.chocosolver.solver.constraints.Propagator<IntVar>
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- org.chocosolver.solver.constraints.nary.clauses.ClauseStore
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- All Implemented Interfaces:
Comparable<Propagator>
,ICause
,Identity
public class ClauseStore extends Propagator<IntVar>
A class to manage life of sclauses during resolution. TODOProject: choco-solver.
- Since:
- 27/10/2016.
- Author:
- Charles Prud'homme
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Nested Class Summary
Nested Classes Modifier and Type Class Description class
ClauseStore.SignedClause
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Field Summary
Fields Modifier and Type Field Description static boolean
ASSERT_UNIT_PROP
static boolean
INTERVAL_TREE
static boolean
PRINT_CLAUSE
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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 void
add(IntVar[] vars, IntIterableRangeSet[] ranges)
Declare a new signed clause in this storevoid
forget()
Try to delete sclauses from this nogood store.int
getNbClauses()
int
getNbLearntClauses()
ESat
isEntailed()
Check wetherthis
is entailed according to the current state of its internal structure.void
printStatistics()
void
propagate(int evtmask)
Call the main filtering algorithm to apply to theDomain
of theVariable
objects.void
propagate(int idxVarInProp, int mask)
Incremental filtering algorithm defined within thePropagator
, called whenever the variable of index idxVarInProp has changed.-
Methods inherited from class org.chocosolver.solver.constraints.Propagator
addVariable, arity, compareTo, defaultExplain, doFinePropagation, doFlush, doSchedule, doScheduleEvent, dynPriority, equals, explain, fails, forcePropagate, forcePropagationOnBacktrack, forEachIntVar, getConstraint, getId, getModel, getNbVars, getPosition, getPriority, getPropagationConditions, getVar, getVars, getVIndice, getVIndices, hashCode, isActive, isCompletelyInstantiated, isPassive, isReified, isReifiedAndSilent, isScheduled, isStateLess, linkVariables, reactToFineEvent, reifiedWith, setActive, setActive0, setPassive, setPosition, setReifiedSilent, setReifiedTrue, setVIndices, toString, unlinkVariables, unschedule
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Method Detail
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getNbClauses
public int getNbClauses()
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getNbLearntClauses
public int getNbLearntClauses()
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add
public void add(IntVar[] vars, IntIterableRangeSet[] ranges)
Declare a new signed clause in this store
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forget
public void forget()
Try to delete sclauses from this nogood store.
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printStatistics
public void printStatistics()
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propagate
public 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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propagate
public void propagate(int idxVarInProp, int mask) throws ContradictionException
Description copied from class:Propagator
Incremental filtering algorithm defined within thePropagator
, 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 totrue
in the constructor. Otherwise, it executespropagate(PropagatorEventType.CUSTOM_PROPAGATION.getStrengthenedMask());
- Overrides:
propagate
in classPropagator<IntVar>
- Parameters:
idxVarInProp
- index of the variablevar
inthis
mask
- type of event- Throws:
ContradictionException
- if a contradiction occurs
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isEntailed
public 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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