public class Alldifferent extends Constraint
Modifier and Type | Field and Description |
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IntVar[] |
list
It specifies a list of variables which must take different values.
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static java.lang.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
queueIndex
Constructor and Description |
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Alldifferent(java.util.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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java.util.ArrayList<Var> |
arguments()
It returns the variables in a scope of the constraint.
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void |
consistency(Store store)
It is a (most probably incomplete) consistency function which removes the
values from variables domains.
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int |
getConsistencyPruningEvent(Var var)
It retrieves the pruning event which causes reevaluation of the
constraint.
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java.lang.String |
id()
It gives the id string of a constraint.
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void |
impose(Store store)
It imposes the constraint in a given store.
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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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java.lang.String |
toString()
It produces a string representation of a constraint state.
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cleanAfterFailure, decompose, getGuideConstraint, getGuideValue, getGuideVariable, impose, imposeDecomposition, numberArgs, removeLevel, removeLevelLate, requiresMonotonicity, setConsistencyPruningEvent, supplyGuideFeedback
auxiliaryVariables, imposeDecomposition
public IntVar[] list
public static java.lang.String[] xmlAttributes
public Alldifferent(IntVar[] list)
list
- variables which are constrained to take different values.public Alldifferent(java.util.ArrayList<? extends IntVar> variables)
variables
- variables which are constrained to take different values.public java.util.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 java.lang.String id()
Constraint
id
in class Constraint
public 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 java.lang.String toString()
Constraint
toString
in class Constraint
public void increaseWeight()
Constraint
increaseWeight
in class Constraint