public class LexOrder extends Constraint
Modifier and Type | Field and Description |
---|---|
boolean |
lexLT
Is Lex enforcing "<" relationship?
|
IntVar[] |
x
Two vectors that have to be lexicographically ordered.
|
IntVar[] |
y |
atomicExecution, consistencyPruningEvents, earlyTerminationOK, id, increaseWeight, numberArgs, numberId, trace
queueIndex
Constructor and Description |
---|
LexOrder(IntVar[] x,
IntVar[] y)
It creates a lexicographical order for vectors x and y,
vectors x and does not need to be of the same size.
|
LexOrder(IntVar[] x,
IntVar[] y,
boolean lt) |
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.
|
protected void |
establishGACInit() |
int |
getConsistencyPruningEvent(Var var)
It retrieves the pruning event which causes reevaluation of the
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 |
removeLevelLate(int level)
This function is called in case of the backtrack.
|
boolean |
satisfied()
It checks if the constraint is satisfied.
|
String |
toString()
It produces a string representation of a constraint state.
|
void |
updateAlpha() |
void |
updateBeta(int i) |
cleanAfterFailure, decompose, getGuideConstraint, getGuideValue, getGuideVariable, id, impose, imposeDecomposition, numberArgs, removeLevel, requiresMonotonicity, setConsistencyPruningEvent, supplyGuideFeedback
auxiliaryVariables, derivative, imposeDecomposition
public IntVar[] x
public IntVar[] y
public final boolean lexLT
public LexOrder(IntVar[] x, IntVar[] y)
x
- vector of vectors which assignment is constrained by LexOrder constraint.public ArrayList<Var> arguments()
Constraint
arguments
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 int getConsistencyPruningEvent(Var var)
Constraint
getConsistencyPruningEvent
in class Constraint
var
- variable for which pruning event is retrievedpublic void consistency(Store store)
Constraint
consistency
in class Constraint
store
- constraint store within which the constraint consistency is being checked.public boolean satisfied()
Constraint
satisfied
in class Constraint
public void removeConstraint()
Constraint
removeConstraint
in class Constraint
public void increaseWeight()
Constraint
increaseWeight
in class Constraint
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 removeLevelLate(int level)
Constraint
removeLevelLate
in class Constraint
level
- the level which is being removed.public String toString()
Constraint
toString
in class Constraint
protected void establishGACInit()
public void updateAlpha()
public void updateBeta(int i)
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