public class AmongVar extends Constraint
Modifier and Type | Field and Description |
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static int |
counter
Number of Among constraints created.
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static boolean |
debugAll
It turns out printing debugging information.
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IntVar[] |
listOfX
List of variables x which values are checked against values of variables y.
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IntVar[] |
listOfY
It specifies what values we are counting in the list of x's.
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IntVar |
n
It specifies the number of x variables equal to at least one value present in the list of y.
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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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AmongVar(ArrayList<IntVar> listOfX,
ArrayList<IntVar> listOfY,
IntVar n)
It constructs an AmongVar constraint.
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AmongVar(IntVar[] listOfX,
IntVar[] listOfY,
IntVar n)
It constructs an AmongVar constraint.
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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.
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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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void |
consistencyForX(Store store)
Is called when all y are grounded and amongForSet is equivalent to simple version of Among.
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void |
consistencyForY(Store store)
It is a function which makes Y consistent if all X's are grounded.
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void |
consistencyWhen_LB0_EQ_UB0(Store store)
The number of x in lbsDom is equal to the number of X intersecting ubSDom.
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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.
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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 var)
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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void |
removeLevel(int level)
This function is called in case of the backtrack, so a constraint can
clear the queue of changed variables which is no longer valid.
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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, removeLevelLate, requiresMonotonicity, setConsistencyPruningEvent, supplyGuideFeedback
auxiliaryVariables, derivative, imposeDecomposition
public static final boolean debugAll
public static int counter
public IntVar[] listOfX
public IntVar[] listOfY
public IntVar n
public static String[] xmlAttributes
public AmongVar(IntVar[] listOfX, IntVar[] listOfY, IntVar n)
listOfX
- the list of variables whose equality to other set of variables we countlistOfY
- the list of variable to which equality is counted.n
- how many variables from list x are equal to at least one variable from list y.public AmongVar(ArrayList<IntVar> listOfX, ArrayList<IntVar> listOfY, IntVar n)
listOfX
- the list of variables whose equality to other set of variables we countlistOfY
- the list of variable to which equality is counted.n
- how many variables from list x are equal to at least one variable from list y.public ArrayList<Var> arguments()
Constraint
arguments
in class Constraint
public void removeLevel(int level)
Constraint
removeLevel
in class Constraint
level
- the level which is being removed.public void consistencyForX(Store store)
store
- constraint store in which context that consistency function is being executed.public void consistencyWhen_LB0_EQ_UB0(Store store)
store
- public void consistencyForY(Store store)
store
- a constraint store in which context all prunings are executed.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 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 var)
Constraint
queueVariable
in class Constraint
level
- the level of the store at which the change has occurred.var
- variable which has changed.public void removeConstraint()
Constraint
removeConstraint
in class Constraint
public boolean satisfied()
Constraint
satisfied
in class Constraint
public String toString()
Constraint
toString
in class Constraint
public void increaseWeight()
Constraint
increaseWeight
in class Constraint
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