choco.cp.solver.constraints.integer.extension
Class GAC3rmPositiveLargeConstraint

java.lang.Object
  extended by choco.kernel.solver.propagation.Propagator
      extended by choco.kernel.solver.constraints.AbstractSConstraint<IntDomainVar>
          extended by choco.kernel.solver.constraints.integer.AbstractIntSConstraint
              extended by choco.kernel.solver.constraints.integer.AbstractLargeIntSConstraint
                  extended by choco.cp.solver.constraints.integer.extension.CspLargeSConstraint
                      extended by choco.cp.solver.constraints.integer.extension.GAC3rmPositiveLargeConstraint
All Implemented Interfaces:
IExtensionnable, IPretty, SConstraint<IntDomainVar>, IntPropagator, Cloneable, EventListener

public final class GAC3rmPositiveLargeConstraint
extends CspLargeSConstraint

GAC3rm (GAC3 with residual supports)


Field Summary
protected  int arity
          size of the scope of the constraint
protected static int NO_SUPPORT
          minimum number of support among all values of each variable;
protected  int[] offsets
          original lower bounds
protected  IterTuplesTable relation
           
protected  int[][] supports
          supports[i][j stores the index of the tuple that currently support the variable-value pair (i,j)
protected  int[][][] tab
           
protected  ValidityChecker valcheck
           
 
Fields inherited from class choco.cp.solver.constraints.integer.extension.CspLargeSConstraint
currentTuple
 
Fields inherited from class choco.kernel.solver.constraints.AbstractSConstraint
cIndices, constraintType, extensions, vars
 
Fields inherited from class choco.kernel.solver.propagation.Propagator
active, constAwakeEvent, priority, propagationEngine
 
Fields inherited from interface choco.kernel.solver.constraints.SConstraint
LOGGER
 
Constructor Summary
GAC3rmPositiveLargeConstraint(IntDomainVar[] vs, IterTuplesTable relation)
           
 
Method Summary
 void awake()
          Propagation: Propagating the constraint for the very first time until local consistency is reached.
 void awakeOnBounds(int varIndex)
           
 void awakeOnInf(int idx)
          Default propagation on improved lower bound: propagation on domain revision.
 void awakeOnInst(int idx)
          Default propagation on instantiation: full constraint re-propagation.
 void awakeOnRem(int idx, int x)
          Default propagation on one value removal: propagation on domain revision.
 void awakeOnRemovals(int idx, DisposableIntIterator deltaDomain)
          The default implementation of propagation when a variable has been modified consists in iterating all values that have been removed (the delta domain) and propagate them one after another, incrementally.
 void awakeOnSup(int idx)
          Default propagation on improved upper bound: propagation on domain revision.
 void filter(int idx)
           
 int getFilteredEventMask(int idx)
           
 int getSupport(int indexVar, int value)
           
 void initSupports()
          initialize the residual supports of each pair to their first allowed tuple
 boolean isSatisfied(int[] tuple)
          TEMPORARY: if not overriden by the constraint, throws an error to avoid bug using reified constraints in constraints that have not been changed to fulfill this api yet !
 String pretty()
          pretty printing of the object.
 void propagate()
          Propagation: Propagating the constraint until local consistency is reached.
 void reviseVar(int indexVar)
          updates the support for all values in the domain of variable and remove unsupported values for variable
 int seekNextSupport(int indexVar, int nva)
          seek a new support for the pair variable-value : (indexVar, nva) start the iteration from scratch in the list
 void setSupport(int idxSupport)
          set the support using multidirectionality
 
Methods inherited from class choco.cp.solver.constraints.integer.extension.CspLargeSConstraint
clone, getRelation, isEntailed, opposite
 
Methods inherited from class choco.kernel.solver.constraints.integer.AbstractIntSConstraint
getConstraintType, isConsistent, isSatisfied
 
Methods inherited from class choco.kernel.solver.constraints.AbstractSConstraint
addExtension, addListener, getAbstractSConstraintExtensionNumber, getConstraintIdx, getExtension, getFineDegree, getNbVarNotInst, getNbVars, getVar, getVarQuick, isCompletelyInstantiated, setConstraintIndex, setExtension, setVar, toString
 
Methods inherited from class choco.kernel.solver.propagation.Propagator
activate, constAwake, fail, getEvent, getPriority, isActive, setActive, setActiveSilently, setEntailed, setPassive, setPropagationEngine
 
Methods inherited from class java.lang.Object
equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait
 

Field Detail

supports

protected int[][] supports
supports[i][j stores the index of the tuple that currently support the variable-value pair (i,j)


arity

protected int arity
size of the scope of the constraint


offsets

protected int[] offsets
original lower bounds


NO_SUPPORT

protected static final int NO_SUPPORT
minimum number of support among all values of each variable;

See Also:
Constant Field Values

relation

protected IterTuplesTable relation

tab

protected int[][][] tab

valcheck

protected ValidityChecker valcheck
Constructor Detail

GAC3rmPositiveLargeConstraint

public GAC3rmPositiveLargeConstraint(IntDomainVar[] vs,
                                     IterTuplesTable relation)
Method Detail

getFilteredEventMask

public int getFilteredEventMask(int idx)
Overrides:
getFilteredEventMask in class CspLargeSConstraint

reviseVar

public void reviseVar(int indexVar)
               throws ContradictionException
updates the support for all values in the domain of variable and remove unsupported values for variable

Parameters:
indexVar -
Throws:
ContradictionException

seekNextSupport

public int seekNextSupport(int indexVar,
                           int nva)
seek a new support for the pair variable-value : (indexVar, nva) start the iteration from scratch in the list


setSupport

public void setSupport(int idxSupport)
set the support using multidirectionality

Parameters:
idxSupport -

getSupport

public int getSupport(int indexVar,
                      int value)
Parameters:
indexVar -
value - with offset removed
Returns:
the residual support

initSupports

public void initSupports()
                  throws ContradictionException
initialize the residual supports of each pair to their first allowed tuple

Throws:
ContradictionException

propagate

public void propagate()
               throws ContradictionException
Description copied from class: Propagator
Propagation: Propagating the constraint until local consistency is reached.

Overrides:
propagate in class CspLargeSConstraint
Throws:
ContradictionException - contradiction exception

awakeOnRemovals

public void awakeOnRemovals(int idx,
                            DisposableIntIterator deltaDomain)
                     throws ContradictionException
Description copied from class: AbstractIntSConstraint
The default implementation of propagation when a variable has been modified consists in iterating all values that have been removed (the delta domain) and propagate them one after another, incrementally.

Specified by:
awakeOnRemovals in interface IntPropagator
Overrides:
awakeOnRemovals in class CspLargeSConstraint
Throws:
ContradictionException

awakeOnInf

public void awakeOnInf(int idx)
                throws ContradictionException
Description copied from class: AbstractIntSConstraint
Default propagation on improved lower bound: propagation on domain revision.

Specified by:
awakeOnInf in interface IntPropagator
Overrides:
awakeOnInf in class AbstractIntSConstraint
Throws:
ContradictionException

awakeOnSup

public void awakeOnSup(int idx)
                throws ContradictionException
Description copied from class: AbstractIntSConstraint
Default propagation on improved upper bound: propagation on domain revision.

Specified by:
awakeOnSup in interface IntPropagator
Overrides:
awakeOnSup in class AbstractIntSConstraint
Throws:
ContradictionException

awakeOnRem

public void awakeOnRem(int idx,
                       int x)
                throws ContradictionException
Description copied from class: AbstractIntSConstraint
Default propagation on one value removal: propagation on domain revision.

Specified by:
awakeOnRem in interface IntPropagator
Overrides:
awakeOnRem in class AbstractIntSConstraint
Throws:
ContradictionException

awakeOnBounds

public void awakeOnBounds(int varIndex)
                   throws ContradictionException
Specified by:
awakeOnBounds in interface IntPropagator
Overrides:
awakeOnBounds in class CspLargeSConstraint
Throws:
ContradictionException

awakeOnInst

public void awakeOnInst(int idx)
                 throws ContradictionException
Description copied from class: AbstractIntSConstraint
Default propagation on instantiation: full constraint re-propagation.

Specified by:
awakeOnInst in interface IntPropagator
Overrides:
awakeOnInst in class CspLargeSConstraint
Throws:
ContradictionException

awake

public void awake()
           throws ContradictionException
Description copied from class: Propagator
Propagation: Propagating the constraint for the very first time until local consistency is reached.

Overrides:
awake in class Propagator
Throws:
ContradictionException - contradiction exception

filter

public void filter(int idx)
            throws ContradictionException
Throws:
ContradictionException

pretty

public String pretty()
Description copied from interface: IPretty
pretty printing of the object. This String is not constant and may depend on the context.

Specified by:
pretty in interface IPretty
Overrides:
pretty in class CspLargeSConstraint
Returns:
a readable string representation of the object

isSatisfied

public boolean isSatisfied(int[] tuple)
Description copied from class: AbstractIntSConstraint
TEMPORARY: if not overriden by the constraint, throws an error to avoid bug using reified constraints in constraints that have not been changed to fulfill this api yet !

Specified by:
isSatisfied in interface IntPropagator
Overrides:
isSatisfied in class CspLargeSConstraint


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