Package org.jacop.set.constraints

Class Lex

java.lang.Object

org.jacop.constraints.DecomposedConstraint<Constraint>

org.jacop.constraints.Constraint

org.jacop.set.constraints.Lex

All Implemented Interfaces:

Stateful

@Deprecated
public class Lex
extends Constraint
implements Stateful

Deprecated.

As of release 4.5.1 replaced by AltB and AleB constraints.

Field Summary

Fields

Modifier and Type	Field	Description
SetVar	a	Deprecated. It specifies a list on which element a lex relationship holds for every two consecutive variables.
SetVar	b	Deprecated. It specifies a list on which element a lex relationship holds for every two consecutive variables.
(package private) static AtomicInteger	idNumber	Deprecated.
protected int	inclusionLevel	Deprecated.
protected TimeStamp<IntDomain>	inDifference	Deprecated.
protected int	inSupport	Deprecated.
protected TimeStamp<IntDomain>	smallerDifference	Deprecated.
protected int	smallerElLevel	Deprecated.
protected int	smallerElSupport	Deprecated.
boolean	strict	Deprecated. It specifies if the relation is strict or not.

Fields inherited from class org.jacop.constraints.Constraint

atomicExecution, consistencyPruningEvents, constraintScope, earlyTerminationOK, increaseWeight, numberId, scope, trace

Fields inherited from class org.jacop.constraints.DecomposedConstraint

queueIndex

Constructor Summary

Constructors

Constructor	Description
Lex(SetVar a, SetVar b)	Deprecated. It constructs an Lexical ordering constraint to restrict the domain of the variables a and b.
Lex(SetVar a, SetVar b, boolean strict)	Deprecated. It constructs an Lexical ordering constraint to restrict the domain of the variables a and b.

Method Summary

Modifier and Type	Method	Description
void	consistency(Store store)	Deprecated. It is a (most probably incomplete) consistency function which removes the values from variables domains.
int	getDefaultConsistencyPruningEvent()	Deprecated.
void	impose(Store store)	Deprecated. It imposes the constraint in a given store.
void	removeLevel(int level)	Deprecated. This function is called in case of the backtrack, so a constraint can clear the queue of changed variables which is no longer valid.
String	toString()	Deprecated. It produces a string representation of a constraint state.

Methods inherited from class org.jacop.constraints.Constraint

afc, arguments, cleanAfterFailure, decompose, getConsistencyPruningEvent, getGuideConstraint, getGuideValue, getGuideVariable, grounded, grounded, id, impose, imposeDecomposition, increaseWeight, intArrayToString, long2int, numberArgs, queueVariable, removeConstraint, requiresMonotonicity, setConsistencyPruningEvent, setConstraintScope, setScope, setScope, setScope, setScope, setScope, setWatchedVariableGrounded, supplyGuideFeedback, updateAFC, watchedVariableGrounded

Methods inherited from class org.jacop.constraints.DecomposedConstraint

auxiliaryVariables, checkInput, checkInput, checkInputForDuplication, checkInputForDuplicationSkipSingletons, checkInputForNullness, checkInputForNullness, checkInputForNullness, derivative, getDubletonsSkipSingletons, imposeDecomposition

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Methods inherited from interface org.jacop.api.Stateful

isStateful

Field Details

idNumber

static AtomicInteger idNumber

Deprecated.

a

public SetVar a

Deprecated.

It specifies a list on which element a lex relationship holds for every two consecutive variables.

b

public SetVar b

Deprecated.

It specifies a list on which element a lex relationship holds for every two consecutive variables.

strict

public boolean strict

Deprecated.

It specifies if the relation is strict or not.

inSupport

protected int inSupport

Deprecated.

inclusionLevel

protected int inclusionLevel

Deprecated.

inDifference

protected TimeStamp<IntDomain> inDifference

Deprecated.

smallerElSupport

protected int smallerElSupport

Deprecated.

smallerElLevel

protected int smallerElLevel

Deprecated.

smallerDifference

protected TimeStamp<IntDomain> smallerDifference

Deprecated.

Constructor Details

Lex

public Lex(SetVar a,
 SetVar b)

Deprecated.

It constructs an Lexical ordering constraint to restrict the domain of the variables a and b. It is strict by default.

Parameters:

a - variable that is restricted to be less than b with lexical order.

b - variable that is restricted to be greater than a with lexical order.

Lex

public Lex(SetVar a,
 SetVar b,
 boolean strict)

Deprecated.

It constructs an Lexical ordering constraint to restrict the domain of the variables a and b.

Parameters:

a - variable that is restricted to be less than b with lexical order.

b - variable that is restricted to be greater than a with lexical order.

strict - specifies if the lex relation is strict.

Method Details

consistency

public void consistency(Store store)

Deprecated.

Description copied from class: Constraint

It is a (most probably incomplete) consistency function which removes the values from variables domains. Only values which do not have any support in a solution space are removed.

Specified by:

consistency in class Constraint

Parameters:

store - constraint store within which the constraint consistency is being checked.

getDefaultConsistencyPruningEvent

public int getDefaultConsistencyPruningEvent()

Deprecated.

Specified by:

getDefaultConsistencyPruningEvent in class Constraint

impose

public void impose(Store store)

Deprecated.

Description copied from class: Constraint

It imposes the constraint in a given store.

Overrides:

impose in class Constraint

Parameters:

store - the constraint store to which the constraint is imposed to.

removeLevel

public void removeLevel(int level)

Deprecated.

Description copied from interface: Stateful

This function is called in case of the backtrack, so a constraint can clear the queue of changed variables which is no longer valid. This function is called *before* all timestamps, variables, mutablevariables have reverted to their previous value.

Specified by:

removeLevel in interface Stateful

Parameters:

level - the level which is being removed.

toString

public String toString()

Deprecated.

Description copied from class: Constraint

It produces a string representation of a constraint state.

Overrides:

toString in class Constraint