org.jacop.constraints.netflow

Interface VarHandler

All Known Implementing Classes:

ArcCompanion, DomainStructure, MultiVarHandler

public interface VarHandler

Common interface to all objects that can handle one or more variables of the network flow constraint.

Version:

4.2

Author:

Robin Steiger and Radoslaw Szymanek

Method Summary

Modifier and Type	Method and Description
int	getPruningEvent(Var variable) Retrieves the consistency pruning event of a handler variable that causes the handler to be reevaluated.
List<IntVar>	listVariables()
void	processEvent(IntVar variable, MutableNetwork network) Informs the handler that one of its variable has changed and asks the handler to update the state of the network accordingly.

Method Detail

listVariables

List<IntVar> listVariables()

Returns:

the list of variables handled by this handler

getPruningEvent

int getPruningEvent(Var variable)

Retrieves the consistency pruning event of a handler variable that causes the handler to be reevaluated. For instance, X- and W-variables will listen to BOUND events while S-variables typically consider ANY events.

Parameters:

variable - a handler variable

Returns:

the pruning event which causes reevaluation of the handler

processEvent

void processEvent(IntVar variable,
                  MutableNetwork network)

Informs the handler that one of its variable has changed and asks the handler to update the state of the network accordingly.

Parameters:

variable - the variable that changed

network - the network