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Bug
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Resolution: Done
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Minor
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7.36.0.Final
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None
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2020 Week 22-24 (from May 25)
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3
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NEW
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NEW
If a planning entity has a chained and a normal planning variable, the default local search phase fails with a NullPointerException when it tries to generate swap moves. The problem is that the inverseVariableSupply is null for the non-chained variables.
Workaround: specify selectors like this:
<localSearch> <unionMoveSelector> <changeMoveSelector/> <swapMoveSelector> <variableNameInclude>previousStandstill</variableNameInclude> </swapMoveSelector> <subChainChangeMoveSelector> <subChainSelector> <valueSelector variableName="previousStandstill"/> </subChainSelector> <valueSelector variableName="previousStandstill"/> <selectReversingMoveToo>true</selectReversingMoveToo> </subChainChangeMoveSelector> <subChainSwapMoveSelector> <subChainSelector> <valueSelector variableName="previousStandstill"/> </subChainSelector> <secondarySubChainSelector> <valueSelector variableName="previousStandstill"/> </secondarySubChainSelector> <selectReversingMoveToo>true</selectReversingMoveToo> </subChainSwapMoveSelector> <!-- TODO use nearby selection to scale out --> </unionMoveSelector> <acceptor> <lateAcceptanceSize>200</lateAcceptanceSize> </acceptor> <forager> <acceptedCountLimit>1</acceptedCountLimit> </forager> </localSearch>
Console output:
Exception in thread "AWT-EventQueue-0" java.lang.IllegalStateException: Solving failed. at org.optaplanner.examples.common.swingui.SolverAndPersistenceFrame$SolveWorker.done(SolverAndPersistenceFrame.java:382) at javax.swing.SwingWorker$5.run(SwingWorker.java:737) at javax.swing.SwingWorker$DoSubmitAccumulativeRunnable.run(SwingWorker.java:832) at sun.swing.AccumulativeRunnable.run(AccumulativeRunnable.java:112) at javax.swing.SwingWorker$DoSubmitAccumulativeRunnable.actionPerformed(SwingWorker.java:842) at javax.swing.Timer.fireActionPerformed(Timer.java:313) at javax.swing.Timer$DoPostEvent.run(Timer.java:245) at java.awt.event.InvocationEvent.dispatch(InvocationEvent.java:311) at java.awt.EventQueue.dispatchEventImpl(EventQueue.java:758) at java.awt.EventQueue.access$500(EventQueue.java:97) at java.awt.EventQueue$3.run(EventQueue.java:709) at java.awt.EventQueue$3.run(EventQueue.java:703) at java.security.AccessController.doPrivileged(Native Method) at java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(ProtectionDomain.java:74) at java.awt.EventQueue.dispatchEvent(EventQueue.java:728) at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:205) at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:116) at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:105) at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:101) at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:93) at java.awt.EventDispatchThread.run(EventDispatchThread.java:82) Caused by: java.lang.NullPointerException at org.optaplanner.core.impl.heuristic.selector.move.generic.chained.ChainedSwapMove.<init>(ChainedSwapMove.java:43) at org.optaplanner.core.impl.heuristic.selector.move.generic.SwapMoveSelector$2.newSwapSelection(SwapMoveSelector.java:150) at org.optaplanner.core.impl.heuristic.selector.move.generic.SwapMoveSelector$2.newSwapSelection(SwapMoveSelector.java:147) at org.optaplanner.core.impl.heuristic.selector.common.iterator.AbstractRandomSwapIterator.createUpcomingSelection(AbstractRandomSwapIterator.java:58) at org.optaplanner.core.impl.heuristic.selector.common.iterator.UpcomingSelectionIterator.hasNext(UpcomingSelectionIterator.java:42) at org.optaplanner.core.impl.heuristic.selector.move.composite.UnionMoveSelector$RandomUnionMoveIterator.refreshMoveIteratorMap(UnionMoveSelector.java:190) at org.optaplanner.core.impl.heuristic.selector.move.composite.UnionMoveSelector$RandomUnionMoveIterator.hasNext(UnionMoveSelector.java:164) at org.optaplanner.core.impl.localsearch.decider.LocalSearchDecider.decideNextStep(LocalSearchDecider.java:108) at org.optaplanner.core.impl.localsearch.DefaultLocalSearchPhase.solve(DefaultLocalSearchPhase.java:70) at org.optaplanner.core.impl.solver.AbstractSolver.runPhases(AbstractSolver.java:98) at org.optaplanner.core.impl.solver.DefaultSolver.solve(DefaultSolver.java:189) at org.optaplanner.examples.common.business.SolutionBusiness.solve(SolutionBusiness.java:334) at org.optaplanner.examples.common.swingui.SolverAndPersistenceFrame$SolveWorker.doInBackground(SolverAndPersistenceFrame.java:370) at javax.swing.SwingWorker$1.call(SwingWorker.java:295) at java.util.concurrent.FutureTask.run(FutureTask.java:266) at javax.swing.SwingWorker.run(SwingWorker.java:334) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748)
