public class SumWeight extends Constraint implements UsesQueueVariable, SatisfiedPresent, RemoveLevelLate
Use when number of variables is greater than 15, otherwise use LinearInt.
atomicExecution, consistencyPruningEvents, constraintScope, earlyTerminationOK, increaseWeight, numberId, scope, trace
queueIndex
Constructor and Description |
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SumWeight(IntVar[] list,
int[] weights,
int equalTo) |
SumWeight(IntVar[] list,
int[] weights,
IntVar sum) |
SumWeight(List<? extends IntVar> variables,
List<Integer> weights,
IntVar sum)
It constructs the constraint SumWeight.
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Modifier and Type | Method and Description |
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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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int |
getDefaultConsistencyPruningEvent() |
void |
impose(Store store)
It imposes the constraint in a given store.
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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 |
removeLevelLate(int level)
This function is called in case of the backtrack.
|
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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afc, arguments, cleanAfterFailure, decompose, getConsistencyPruningEvent, getGuideConstraint, getGuideValue, getGuideVariable, grounded, grounded, id, impose, imposeDecomposition, increaseWeight, intArrayToString, numberArgs, removeConstraint, requiresMonotonicity, setConsistencyPruningEvent, setConstraintScope, setScope, setScope, setScope, setScope, setScope, setWatchedVariableGrounded, supplyGuideFeedback, updateAFC, watchedVariableGrounded
auxiliaryVariables, checkInput, checkInput, checkInputForDuplication, checkInputForDuplicationSkipSingletons, checkInputForNullness, checkInputForNullness, checkInputForNullness, derivative, getDubletonsSkipSingletons, imposeDecomposition
public SumWeight(IntVar[] list, int[] weights, IntVar sum)
list
- the list of varibalesweights
- the list of weightssum
- the resulting sumpublic SumWeight(IntVar[] list, int[] weights, int equalTo)
list
- the list of varibalesweights
- the list of weightsequalTo
- the value to which SumWeight is equal to.public SumWeight(List<? extends IntVar> variables, List<Integer> weights, IntVar sum)
variables
- variables which are being multiplied by weights.weights
- weight for each variable.sum
- variable containing the sum of weighted variables.public void removeLevelLate(int level)
RemoveLevelLate
removeLevelLate
in interface RemoveLevelLate
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 getDefaultConsistencyPruningEvent()
getDefaultConsistencyPruningEvent
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 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 boolean satisfied()
SatisfiedPresent
Implementations of this interface for constraints that are not PrimitiveConstraint may require constraint imposition and consistency check as a requirement to work correctly.
satisfied
in interface SatisfiedPresent
public String toString()
Constraint
toString
in class Constraint
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