CODEWITHSUNDEEP
drools-planneroptaplanner
Shatz
Shatz

Reputation: 55

OptaPlanner construction phase - Is there a way to define filters?

In local search phase you can configure filters for entities, values and moves. You can even provide a custom move factory if you want.

However, I can't find any documentation on how to do the same in construction phase. The only configuration is a heuristic type and forager: Chapter 8. Construction heuristics

I want to implement some of my very hard rules in filters, however, without the ability to filter in construction phase I must also define them as scoring rules to avoid bad construction.

Is there a way to define filters for construction phase?

Upvotes: 0

Views: 774

Answers (1)

Geoffrey De Smet
Geoffrey De Smet

Reputation: 27357

Yes, there is (requires at least 6.0.0.CR1, but best the latest and greatest), but it's not yet documented.

Follow the rabit hole down from ConstructionHeuristicSolverPhaseConfig and QueuedEntityPlacerConfig. It's something like:

   <constructionHeuristic>
     <queuedEntityPlacer>
       <entitySelector id="a"/>
       <changeMoveSelector>
         <mimicEntitySelector refId="a"/>
         <valueSelector>
       </changeMoveSelector>
     </queuedEntityPlacer>
   </constructionHeuristic>

Upvotes: 1

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