<div dir="ltr"><div style>Hello there, i'm getting this error:</div><div style><br></div><div style>-------------------</div><div style><div>11:26:50.394 [main] INFO o.d.p.core.solver.DefaultSolver - Solving started: time spend (187), score (null), new best score (null), random seed (0).</div>
<div>Exception in thread "main" java.lang.IllegalStateException: The selectionOrder (DECREASING_DIFFICULTY) can not be used on a PlanningEntity (com.swa.planner.domain.CloudProcess) that has no support for difficulty sorting. Check the @PlanningEntity annotation.</div>
<div><span class="" style="white-space:pre"> </span>at org.drools.planner.core.heuristic.selector.entity.PlanningEntitySelector.validate(PlanningEntitySelector.java:53)</div><div><span class="" style="white-space:pre"> </span>at org.drools.planner.core.heuristic.selector.entity.PlanningEntitySelector.phaseStarted(PlanningEntitySelector.java:45)</div>
<div><span class="" style="white-space:pre"> </span>at org.drools.planner.core.constructionheuristic.greedyFit.selector.GreedyPlanningEntitySelector.phaseStarted(GreedyPlanningEntitySelector.java:41)</div><div><span class="" style="white-space:pre"> </span>at org.drools.planner.core.constructionheuristic.greedyFit.DefaultGreedyFitSolverPhase.phaseStarted(DefaultGreedyFitSolverPhase.java:111)</div>
<div><span class="" style="white-space:pre"> </span>at org.drools.planner.core.constructionheuristic.greedyFit.DefaultGreedyFitSolverPhase.solve(DefaultGreedyFitSolverPhase.java:57)</div><div><span class="" style="white-space:pre"> </span>at org.drools.planner.core.solver.DefaultSolver.runSolverPhases(DefaultSolver.java:190)</div>
<div><span class="" style="white-space:pre"> </span>at org.drools.planner.core.solver.DefaultSolver.solve(DefaultSolver.java:155)</div><div><span class="" style="white-space:pre"> </span>at com.swa.planner.domain.CloudTest.main(CloudTest.java:51)</div>
<div>-------------------------</div><div><br></div><div style>I know why it is happening though (at least i think so), but will I have to implement the comparator to every planner I do or is there any other way to make it work?</div>
<div style><br></div><div style>I'm reproducing the example from the guide, when it passes the drools rules it gives that message. I didn't implement CloudComputerStrengthComparator neither CloudProcessDifficultyComparator, will I have to implement those so this example works?</div>
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