Details
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Bug
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Resolution: Done
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Major
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None
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None
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2018 Week 30-32
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1
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NEW
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NEW
Description
[info] java.lang.NullPointerException:
[info] at org.optaplanner.core.config.util.ConfigUtils.resolveThreadPoolSizeScript(ConfigUtils.java:268)
[info] at org.optaplanner.core.config.solver.SolverConfig.resolveMoveThreadCount(SolverConfig.java:310)
[info] at org.optaplanner.core.config.solver.SolverConfig.buildSolver(SolverConfig.java:250)
[info] at org.optaplanner.core.impl.solver.AbstractSolverFactory.buildSolver(AbstractSolverFactory.java:61)
[info] at SchoolYearScheduleSolverSpec.$anonfun$new$1(SchoolYearScheduleSolverSpec.scala:19)
[info] at org.scalatest.OutcomeOf.outcomeOf(OutcomeOf.scala:85)
[info] at org.scalatest.OutcomeOf.outcomeOf$(OutcomeOf.scala:83)
[info] at org.scalatest.OutcomeOf$.outcomeOf(OutcomeOf.scala:104)
[info] at org.scalatest.Transformer.apply(Transformer.scala:22)
[info] at org.scalatest.Transformer.apply(Transformer.scala:20)
<jcalonso> diggin a bit more I found that is because "new ScriptEngineManager().getEngineByName(scriptLanguage);" returns null
<jcalonso> here https://github.com/kiegroup/optaplanner/blob/985dbe3b9575e8cf4663eb8e7ab12646dd110410/optaplanner-core/src/main/java/org/optaplanner/core/config/util/ConfigUtils.java#L267
<jcalonso> and doing: new NashornScriptEngineFactory().getScriptEngine() works fine
https://github.com/sbt/sbt/issues/1214
Proposal A: fail fast with a clear error message
Proposal B: fix it
Workaround: adding fork in Test := true solves the problem