public class NetworkFlow extends Constraint
Modifier and Type | Field and Description |
---|---|
IntVar |
costVariable
The cost variable
|
boolean |
disableQueueVariable
Disables the queue variable function during consistency
|
Map<IntVar,VarHandler> |
map
The variables and their handlers
|
Pruning |
network
The network
|
int |
previousLevel |
Set<IntVar> |
queue
The set of queued variables
|
atomicExecution, consistencyPruningEvents, earlyTerminationOK, id, increaseWeight, numberArgs, numberId, trace
queueIndex
Constructor and Description |
---|
NetworkFlow(NetworkBuilder builder) |
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.
|
String |
id()
Identifiers
|
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 variable)
Search & Backtracking
|
void |
removeConstraint()
Cleanup
|
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clear the queue of changed variables which is no longer valid.
|
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.
|
cleanAfterFailure, decompose, getGuideConstraint, getGuideValue, getGuideVariable, impose, imposeDecomposition, numberArgs, requiresMonotonicity, setConsistencyPruningEvent, supplyGuideFeedback
auxiliaryVariables, derivative, imposeDecomposition
public final Pruning network
public IntVar costVariable
public final Map<IntVar,VarHandler> map
public boolean disableQueueVariable
public int previousLevel
public NetworkFlow(NetworkBuilder builder)
public ArrayList<Var> arguments()
Constraint
arguments
in class Constraint
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 variable)
queueVariable
in class Constraint
level
- the level of the store at which the change has occurred.variable
- variable which has changed.public void consistency(Store store)
Constraint
consistency
in class Constraint
store
- constraint store within which the constraint consistency is being checked.public void removeLevel(int level)
Constraint
removeLevel
in class Constraint
level
- the level which is being removed.public void removeLevelLate(int level)
Constraint
removeLevelLate
in class Constraint
level
- the level which is being removed.public boolean satisfied()
Constraint
satisfied
in class Constraint
public void removeConstraint()
removeConstraint
in class Constraint
public void increaseWeight()
Constraint
increaseWeight
in class Constraint
public String id()
id
in class Constraint
public String toString()
Constraint
toString
in class Constraint
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