public class Alldistinct extends Constraint
Modifier and Type | Field and Description |
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int |
consistencyChecks
It counts the number of executions of the consistency function.
|
protected ArrayList<IntVar> |
freeVariablesAtFailure |
int |
fullConsistencyPassesWithNarrowingEvent
It computes how many times did consistency execution has been
re-executed due to narrowing event at the end of the consistency
function.
|
IntVar[] |
list
It specifies all variables which have to have different values.
|
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.
|
atomicExecution, consistencyPruningEvents, earlyTerminationOK, id, increaseWeight, numberArgs, numberId, trace
queueIndex
Constructor and Description |
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Alldistinct(ArrayList<? extends IntVar> list)
It constructs an alldistinct constraint.
|
Alldistinct(IntVar[] list)
It constructs an alldistinct constraint.
|
Modifier and Type | Method and Description |
---|---|
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.
|
Constraint |
getGuideConstraint()
It specifies a constraint which if imposed by search will enhance
propagation of this constraint.
|
int |
getGuideValue()
This function provides a value which if assigned to a variable returned
by getGuideVariable() will enhance propagation of this constraint.
|
Var |
getGuideVariable()
This function provides a variable which assigned a value returned
by will enhance propagation of this constraint.
|
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.
|
void |
queueVariable(int level,
Var var)
This is a function called to indicate which variable in a scope of
constraint has changed.
|
void |
removeConstraint()
It removes the constraint by removing this constraint from all variables.
|
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clear the queue of changed variables which is no longer valid.
|
boolean |
satisfied()
It checks if the constraint is satisfied.
|
String |
toString()
It produces a string representation of a constraint state.
|
cleanAfterFailure, decompose, id, impose, imposeDecomposition, numberArgs, removeLevelLate, requiresMonotonicity, setConsistencyPruningEvent, supplyGuideFeedback
auxiliaryVariables, derivative, imposeDecomposition
public int consistencyChecks
public int fullConsistencyPassesWithNarrowingEvent
public IntVar[] list
public static String[] xmlAttributes
public Alldistinct(IntVar[] list)
list
- an array of variables.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 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 Constraint getGuideConstraint()
Constraint
getGuideConstraint
in class Constraint
public int getGuideValue()
Constraint
getGuideValue
in class Constraint
public Var getGuideVariable()
Constraint
getGuideVariable
in class Constraint
public void increaseWeight()
Constraint
increaseWeight
in class Constraint
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