public class ElementInteger extends Constraint
Modifier and Type | Field and Description |
---|---|
IntVar |
index
It specifies variable index within an element constraint list[index-indexOffset] = value.
|
int |
indexOffset
It specifies indexOffset within an element constraint list[index-indexOffset] = value.
|
int[] |
list
It specifies list of variables within an element constraint list[index-indexOffset] = value.
|
IntVar |
value
It specifies variable value within an element constraint list[index-indexOffset] = value.
|
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 |
---|
ElementInteger(IntVar index,
ArrayList<Integer> list,
IntVar value)
It constructs an element constraint with default indexOffset equal 0.
|
ElementInteger(IntVar index,
ArrayList<Integer> list,
IntVar value,
int indexOffset)
It constructs an element constraint.
|
ElementInteger(IntVar index,
int[] list,
IntVar value,
int indexOffset)
It constructs an element 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.
|
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clear the queue of changed variables which is no longer valid.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, getGuideConstraint, getGuideValue, getGuideVariable, id, impose, imposeDecomposition, numberArgs, removeLevelLate, requiresMonotonicity, setConsistencyPruningEvent, supplyGuideFeedback
auxiliaryVariables, derivative, imposeDecomposition
public IntVar index
public IntVar value
public final int indexOffset
public int[] list
public static String[] xmlAttributes
public ElementInteger(IntVar index, int[] list, IntVar value, int indexOffset)
index
- variable indexlist
- list of integers from which an index-th element is takenvalue
- a value of the index-th element from listindexOffset
- shift applied to index variable.public ElementInteger(IntVar index, ArrayList<Integer> list, IntVar value)
index
- index variable.list
- list containing variables which one pointed out by index variable is made equal to value variable.value
- a value variable equal to the specified element from the list.public ElementInteger(IntVar index, ArrayList<Integer> list, IntVar value, int indexOffset)
index
- variable indexlist
- list of integers from which an index-th element is takenvalue
- a value of the index-th element from listindexOffset
- shift applied to index variable.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 void increaseWeight()
Constraint
increaseWeight
in class Constraint
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