Route duration (via StateManager) is always null in HardRouteConstraint

[Rzpeg]

Hi,

Trying to implement a hard route constraint that depends on the route cost and duration, however the route duration is always returned as null. The route costs return is OK.
jsprit version 1.7.3

var stateManager = new StateManager(problem);

HardRouteConstraint customConstraint = insertionContext -> {
    var route = insertionContext.getRoute();
    var routeDuration = stateManager.getRouteState(route, InternalStates.DURATION, Double.class);
    var routeCosts = stateManager.getRouteState(route, InternalStates.COSTS, Double.class);
    ...
 }

var constraintManager = new ConstraintManager(problem, stateManager);
constraintManager.addConstraint(customConstraint);

[briandilley]

be sure to call: stateManager.updateLoadStates(); (and the other update* methods) so that the state that you're looking for is tracked.

[Rzpeg]

Thanks for the hint. I'll try it later this week.

[Rzpeg]

@briandilley It works, but the states are accessible only in constraints.
I need to access a few states for the best solution found. I can use the SolutionAnalyser to get built-in states but there's no way I can add my custom StateUpdaters to the analyzer. The only way I've found is just copy-pate the analyser code, add my updaters to its statesManager.
Is there a better way of doing it ?