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  1. OptaPlanner
  2. PLANNER-152

ArrayIndexOutOfBoundsException at BendableScore.getSoftScore caused by erroneous index calculation at BendableScoreDefinition.calculateTimeGradient

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    • Icon: Feature Request Feature Request
    • Resolution: Done
    • Icon: Major Major
    • 6.0.0.Beta3
    • 6.0.0.Beta2
    • optaplanner-core
    • None

      When using the following combination of a Bendable score and a composite termination:

      	<scoreDirectorFactory>
      		<scoreDefinitionType>BENDABLE</scoreDefinitionType>
      		<bendableHardLevelCount>1</bendableHardLevelCount>
      		<bendableSoftLevelCount>1</bendableSoftLevelCount>
      		<scoreDrl>/ar/com/eox/palletbuild/rules/scoreRules.drl</scoreDrl>
      	</scoreDirectorFactory>
      
      	<termination>
      		<terminationCompositionStyle>OR</terminationCompositionStyle>
      		<scoreAttained>0/0</scoreAttained>
      		<maximumSecondsSpend>600</maximumSecondsSpend>
      	</termination>
      

      I get the following exception at the the localSearch phase:

      Exception in thread "main" java.lang.ArrayIndexOutOfBoundsException: 1
      	at org.optaplanner.core.api.score.buildin.bendable.BendableScore.getSoftScore(BendableScore.java:96)
      	at org.optaplanner.core.impl.score.buildin.bendable.BendableScoreDefinition.calculateTimeGradient(BendableScoreDefinition.java:124)
      	at org.optaplanner.core.impl.score.buildin.bendable.BendableScoreDefinition.calculateTimeGradient(BendableScoreDefinition.java:27)
      	at org.optaplanner.core.impl.termination.ScoreAttainedTermination.calculateSolverTimeGradient(ScoreAttainedTermination.java:50)
      	at org.optaplanner.core.impl.termination.OrCompositeTermination.calculateSolverTimeGradient(OrCompositeTermination.java:69)
      	at org.optaplanner.core.impl.termination.OrCompositeTermination.calculateSolverTimeGradient(OrCompositeTermination.java:69)
      	at org.optaplanner.core.impl.termination.PhaseToSolverTerminationBridge.calculatePhaseTimeGradient(PhaseToSolverTerminationBridge.java:80)
      	at org.optaplanner.core.impl.localsearch.DefaultLocalSearchSolverPhase.solve(DefaultLocalSearchSolverPhase.java:60)
      	at org.optaplanner.core.impl.solver.DefaultSolver.runSolverPhases(DefaultSolver.java:190)
      	at org.optaplanner.core.impl.solver.DefaultSolver.solve(DefaultSolver.java:155)
      

      This seems to be caused by an error in these lines in BendableScoreDefinition:

              int levelCount = hardLevelCount + softLevelCount;
              for (int i = 0; i < levelCount; i++) {
                  if (i != (levelCount - 1)) {
                      levelTimeGradientWeight *= recursiveTimeGradientWeight;
                  }
                  int startScoreLevel = (i < hardLevelCount) ? startScore.getHardScore(i) : startScore.getSoftScore(i);
                  int endScoreLevel = (i < hardLevelCount) ? endScore.getHardScore(i) : endScore.getSoftScore(i);
                  int scoreLevel = (i < hardLevelCount) ? score.getHardScore(i) : score.getSoftScore(i);
      

      as the call to score.getSoftScore(...) is not taking into account that i is offset by hardLevelCount.

              gdesmet@redhat.com Geoffrey De Smet (Inactive)
              camilo_horovitz Camilo Horovitz (Inactive)
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                Created:
                Updated:
                Resolved: