public class Alldifferent extends Constraint
Modifier and Type | Field and Description |
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protected TimeStamp<Integer> |
grounded |
IntVar[] |
list
It specifies a list of variables which must take different values.
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protected HashMap<IntVar,Integer> |
positionMapping |
static String[] |
xmlAttributes
It specifies the arguments required to be saved by an XML format as well as
the constructor being called to recreate an object from an XML format.
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atomicExecution, consistencyPruningEvents, earlyTerminationOK, id, increaseWeight, numberArgs, numberId, trace
queueIndex
Constructor and Description |
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Alldifferent(ArrayList<? extends IntVar> variables)
It constructs the alldifferent constraint for the supplied variable.
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Alldifferent(IntVar[] list)
It constructs the alldifferent constraint for the supplied variable.
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Modifier and Type | Method and Description |
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ArrayList<Var> |
arguments()
It returns the variables in a scope of the constraint.
|
void |
consistency(Store store)
It is a (most probably incomplete) consistency function which removes the
values from variables domains.
|
int |
getConsistencyPruningEvent(Var var)
It retrieves the pruning event which causes reevaluation of the
constraint.
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void |
impose(Store store)
It imposes the constraint in a given store.
|
void |
increaseWeight()
It increases the weight of the variables in the constraint scope.
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void |
queueVariable(int level,
Var V)
This is a function called to indicate which variable in a scope of
constraint has changed.
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void |
removeConstraint()
It removes the constraint by removing this constraint from all variables.
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boolean |
satisfied()
It checks if the constraint is satisfied.
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String |
toString()
It produces a string representation of a constraint state.
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cleanAfterFailure, decompose, getGuideConstraint, getGuideValue, getGuideVariable, id, impose, imposeDecomposition, numberArgs, removeLevel, removeLevelLate, requiresMonotonicity, setConsistencyPruningEvent, supplyGuideFeedback
auxiliaryVariables, derivative, imposeDecomposition
public IntVar[] list
public static String[] xmlAttributes
public Alldifferent(IntVar[] list)
list
- variables which are constrained to take different values.public ArrayList<Var> arguments()
Constraint
arguments
in class Constraint
public void consistency(Store store)
Constraint
consistency
in class Constraint
store
- constraint store within which the constraint consistency is being checked.public int getConsistencyPruningEvent(Var var)
Constraint
getConsistencyPruningEvent
in class Constraint
var
- variable for which pruning event is retrievedpublic boolean satisfied()
Constraint
satisfied
in class Constraint
public void impose(Store store)
Constraint
impose
in class Constraint
store
- the constraint store to which the constraint is imposed to.public void queueVariable(int level, Var V)
Constraint
queueVariable
in class Constraint
level
- the level of the store at which the change has occurred.V
- variable which has changed.public void removeConstraint()
Constraint
removeConstraint
in class Constraint
public String toString()
Constraint
toString
in class Constraint
public void increaseWeight()
Constraint
increaseWeight
in class Constraint
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