Mixing
CustomChangeMove in chained planning entities throws IllegalStateException (Optaplanner)
I want to do a custom change move to chained planning entities.
When certain conditions are met suppose I want to move E such that it comes after B as in the example below.
A <- B <- C and D <- E <- F become A <- C and D <- B <- E <-F
To achieve this I implemented a CustomChangeMove:
public class CustomChangeMove extends AbstractMove<VehicleRoutingSolution> {
private Customer customer;
private Customer toPreviousStandstill;
private Customer oldTrailingEntity;
private Customer newTrailingEntity;
public CustomChangemove(Customer customer, Customer toPreviousStandstill, Customer oldTrailingEntity, Customer newTrailingEntity) {
this.customer = customer;
this.toPreviousStandstill = toPreviousStandstill;
this.oldTrailingEntity = oldTrailingEntity;
this.newTrailingEntity = newTrailingEntity;
}
@Override
protected void doMoveOnGenuineVariables(ScoreDirector<VehicleRoutingSolution> scoreDirector) {
Standstill oldPreviousStandstill = customer.getPreviousStandstill();
scoreDirector.beforeVariableChanged(customer, "previousStandstill" );
//fix old chain
oldTrailingEntity.setPreviousStandstill(oldPreviousStandstill);
// oldPreviousStandstill.setNextCustomer(oldTrailingEntity); // shadow variables are updated automatically
// move object
customer.setPreviousStandstill(toPreviousStandstill);
// customer.setNextCustomer(newTrailingEntity); shadow variable
//fix new chain
toPreviousStandstill.setNextCustomer(customer);
// toPreviousStandstill.setNextCustomer(null);
// newTrailingEntity.setPreviousStandstill(customer); // shadow variable
scoreDirector.afterVariableChanged(customer, "previousStandstill");
}
@Override
public boolean isMoveDoable(ScoreDirector<VehicleRoutingSolution> scoreDirector) {
return !Objects.equals(customer.getPreviousStandstill(), toPreviousStandstill) ||
!Objects.equals(customer.getNextCustomer(), toPreviousStandstill);
}
I would think that configuring the previousStandstills and nextCustomers this way would fix the chains but instead it is yielding me an IllegalStateException:
java.lang.IllegalStateException: The entity (Customer [shipmentId=xx, vehicle=TimeWindowedVehicle [0]]) has a variable (previousStandstill) with value (Customer [xx, vehicle=TimeWindowedVehicle [0]]) which has a sourceVariableName variable (nextCustomer) with a value (Customer [shipmentId=xxxxx-1, vehicle=TimeWindowedVehicle [0]]) which is not null.
Verify the consistency of your input problem for that sourceVariableName variable.
at org.optaplanner.core.impl.domain.variable.inverserelation.SingletonInverseVariableListener.insert(SingletonInverseVariableListener.java:72) ~[optaplanner-core-7.0.0.Final.jar:7.0.0.Final]
at org.optaplanner.core.impl.domain.variable.inverserelation.SingletonInverseVariableListener.afterVariableChanged(SingletonInverseVariableListener.java:51) ~[optaplanner-core-7.0.0.Final.jar:7.0.0.Final]
at org.optaplanner.core.impl.domain.variable.listener.support.VariableListenerSupport.triggerVariableListenersInNotificationQueues(VariableListenerSupport.java:209) ~[optaplanner-core-7.0.0.Final.jar:7.0.0.Final]
at org.optaplanner.core.impl.score.director.AbstractScoreDirector.triggerVariableListeners(AbstractScoreDirector.java:228) ~[optaplanner-core-7.0.0.Final.jar:7.0.0.Final]
at org.optaplanner.core.impl.heuristic.move.AbstractMove.doMove(AbstractMove.java:38) ~[optaplanner-core-7.0.0.Final.jar:7.0.0.Final]
at org.optaplanner.core.impl.heuristic.move.AbstractMove.doMove(AbstractMove.java:27) ~[optaplanner-core-7.0.0.Final.jar:7.0.0.Final]
at org.optaplanner.core.impl.localsearch.decider.LocalSearchDecider.doMove(LocalSearchDecider.java:146) ~[optaplanner-core-7.0.0.Final.jar:7.0.0.Final]
at org.optaplanner.core.impl.localsearch.decider.LocalSearchDecider.decideNextStep(LocalSearchDecider.java:120) ~[optaplanner-core-7.0.0.Final.jar:7.0.0.Final]
at org.optaplanner.core.impl.localsearch.DefaultLocalSearchPhase.solve(DefaultLocalSearchPhase.java:70) ~[optaplanner-core-7.0.0.Final.jar:7.0.0.Final]
at org.optaplanner.core.impl.solver.AbstractSolver.runPhases(AbstractSolver.java:87) ~[optaplanner-core-7.0.0.Final.jar:7.0.0.Final]
at org.optaplanner.core.impl.solver.DefaultSolver.solve(DefaultSolver.java:163) ~[optaplanner-core-7.0.0.Final.jar:7.0.0.Final]
at org.optaplanner.benchmark.impl.SubSingleBenchmarkRunner.call(SubSingleBenchmarkRunner.java:106) ~[optaplanner-benchmark-7.0.0.Final.jar:7.0.0.Final]
at org.optaplanner.benchmark.impl.SubSingleBenchmarkRunner.call(SubSingleBenchmarkRunner.java:34) ~[optaplanner-benchmark-7.0.0.Final.jar:7.0.0.Final]
at java.util.concurrent.FutureTask.run(FutureTask.java:266) ~[na:1.8.0_191]
at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) ~[na:1.8.0_191]
at java.util.concurrent.FutureTask.run(FutureTask.java:266) ~[na:1.8.0_191]
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) ~[na:1.8.0_191]
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) ~[na:1.8.0_191]
at java.lang.Thread.run(Thread.java:748) ~[na:1.8.0_191]
Another idea I have is to use the default ChainedChangeMove:
public class CustomChangeMoveFactory implements MoveListFactory<VehicleRoutingSolution> {
@Override
public List<ChainedChangeMove> createMoveList(VehicleRoutingSolution vrpSol) {
List<ChainedChangeMove> moveList = new ArrayList<>();
List<Customer> customers = vrpSol.getCustomers();
for (Customer c1 : customers) {
for (Customer c2 : customers) {
//if certain condition met add to movelist
moveList.add(new ChainedChangeMove(c1, variableDescriptor ?, c2, c1.getNextCustomer(), c2.getNextCustomer()))
}
}
return moveList;
}
}
But for that I need a variableDescriptor that I don't have.
Any ideas why my CustomChangeMove fails ?
EDIT
After quite some digging I feel that some sort of a circular reference occurs. I find that the method runs fine a few times before throwing an exception and the exception thrown is typically undoing a change that has been done before (due to how I generate these CustomChangeMoves this is not unthinkable).
I find that the exception is always thrown when the change is on the same chain. It occurs when the customer still has a nextCustomer (an @InverseRelationShadowVariable) that is not updated to null which normally it what it normally will be when the previousStandstill is updated.
So, when on the same chain A <- B <- C <- D <- E, the move will be such that to move B behind E: A <- C <- D <- E <- B. This will succeed. The following move will try to put E behind B: A <- C <- D <- B <- E, this is when the exception is thrown. Any ideas on how to deal with this are deeply appreciated.
Also, I don't understand why the move is even executed as isMoveDoable should prevent this from occurring.
java optaplanner
asked Dec 26 '18 at 7:32
k88k88
399315
add a comment |
I want to do a custom change move to chained planning entities.
When certain conditions are met suppose I want to move E such that it comes after B as in the example below.
A <- B <- C and D <- E <- F become A <- C and D <- B <- E <-F
To achieve this I implemented a CustomChangeMove:
public class CustomChangeMove extends AbstractMove<VehicleRoutingSolution> {
private Customer customer;
private Customer toPreviousStandstill;
private Customer oldTrailingEntity;
private Customer newTrailingEntity;
public CustomChangemove(Customer customer, Customer toPreviousStandstill, Customer oldTrailingEntity, Customer newTrailingEntity) {
this.customer = customer;
this.toPreviousStandstill = toPreviousStandstill;
this.oldTrailingEntity = oldTrailingEntity;
this.newTrailingEntity = newTrailingEntity;
}
@Override
protected void doMoveOnGenuineVariables(ScoreDirector<VehicleRoutingSolution> scoreDirector) {
Standstill oldPreviousStandstill = customer.getPreviousStandstill();
scoreDirector.beforeVariableChanged(customer, "previousStandstill" );
//fix old chain
oldTrailingEntity.setPreviousStandstill(oldPreviousStandstill);
// oldPreviousStandstill.setNextCustomer(oldTrailingEntity); // shadow variables are updated automatically
// move object
customer.setPreviousStandstill(toPreviousStandstill);
// customer.setNextCustomer(newTrailingEntity); shadow variable
//fix new chain
toPreviousStandstill.setNextCustomer(customer);
// toPreviousStandstill.setNextCustomer(null);
// newTrailingEntity.setPreviousStandstill(customer); // shadow variable
scoreDirector.afterVariableChanged(customer, "previousStandstill");
}
@Override
public boolean isMoveDoable(ScoreDirector<VehicleRoutingSolution> scoreDirector) {
return !Objects.equals(customer.getPreviousStandstill(), toPreviousStandstill) ||
!Objects.equals(customer.getNextCustomer(), toPreviousStandstill);
}
I would think that configuring the previousStandstills and nextCustomers this way would fix the chains but instead it is yielding me an IllegalStateException:
java.lang.IllegalStateException: The entity (Customer [shipmentId=xx, vehicle=TimeWindowedVehicle [0]]) has a variable (previousStandstill) with value (Customer [xx, vehicle=TimeWindowedVehicle [0]]) which has a sourceVariableName variable (nextCustomer) with a value (Customer [shipmentId=xxxxx-1, vehicle=TimeWindowedVehicle [0]]) which is not null.
Verify the consistency of your input problem for that sourceVariableName variable.
at org.optaplanner.core.impl.domain.variable.inverserelation.SingletonInverseVariableListener.insert(SingletonInverseVariableListener.java:72) ~[optaplanner-core-7.0.0.Final.jar:7.0.0.Final]
at org.optaplanner.core.impl.domain.variable.inverserelation.SingletonInverseVariableListener.afterVariableChanged(SingletonInverseVariableListener.java:51) ~[optaplanner-core-7.0.0.Final.jar:7.0.0.Final]
at org.optaplanner.core.impl.domain.variable.listener.support.VariableListenerSupport.triggerVariableListenersInNotificationQueues(VariableListenerSupport.java:209) ~[optaplanner-core-7.0.0.Final.jar:7.0.0.Final]
at org.optaplanner.core.impl.score.director.AbstractScoreDirector.triggerVariableListeners(AbstractScoreDirector.java:228) ~[optaplanner-core-7.0.0.Final.jar:7.0.0.Final]
at org.optaplanner.core.impl.heuristic.move.AbstractMove.doMove(AbstractMove.java:38) ~[optaplanner-core-7.0.0.Final.jar:7.0.0.Final]
at org.optaplanner.core.impl.heuristic.move.AbstractMove.doMove(AbstractMove.java:27) ~[optaplanner-core-7.0.0.Final.jar:7.0.0.Final]
at org.optaplanner.core.impl.localsearch.decider.LocalSearchDecider.doMove(LocalSearchDecider.java:146) ~[optaplanner-core-7.0.0.Final.jar:7.0.0.Final]
at org.optaplanner.core.impl.localsearch.decider.LocalSearchDecider.decideNextStep(LocalSearchDecider.java:120) ~[optaplanner-core-7.0.0.Final.jar:7.0.0.Final]
at org.optaplanner.core.impl.localsearch.DefaultLocalSearchPhase.solve(DefaultLocalSearchPhase.java:70) ~[optaplanner-core-7.0.0.Final.jar:7.0.0.Final]
at org.optaplanner.core.impl.solver.AbstractSolver.runPhases(AbstractSolver.java:87) ~[optaplanner-core-7.0.0.Final.jar:7.0.0.Final]
at org.optaplanner.core.impl.solver.DefaultSolver.solve(DefaultSolver.java:163) ~[optaplanner-core-7.0.0.Final.jar:7.0.0.Final]
at org.optaplanner.benchmark.impl.SubSingleBenchmarkRunner.call(SubSingleBenchmarkRunner.java:106) ~[optaplanner-benchmark-7.0.0.Final.jar:7.0.0.Final]
at org.optaplanner.benchmark.impl.SubSingleBenchmarkRunner.call(SubSingleBenchmarkRunner.java:34) ~[optaplanner-benchmark-7.0.0.Final.jar:7.0.0.Final]
at java.util.concurrent.FutureTask.run(FutureTask.java:266) ~[na:1.8.0_191]
at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) ~[na:1.8.0_191]
at java.util.concurrent.FutureTask.run(FutureTask.java:266) ~[na:1.8.0_191]
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) ~[na:1.8.0_191]
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) ~[na:1.8.0_191]
at java.lang.Thread.run(Thread.java:748) ~[na:1.8.0_191]
Another idea I have is to use the default ChainedChangeMove:
public class CustomChangeMoveFactory implements MoveListFactory<VehicleRoutingSolution> {
@Override
public List<ChainedChangeMove> createMoveList(VehicleRoutingSolution vrpSol) {
List<ChainedChangeMove> moveList = new ArrayList<>();
List<Customer> customers = vrpSol.getCustomers();
for (Customer c1 : customers) {
for (Customer c2 : customers) {
//if certain condition met add to movelist
moveList.add(new ChainedChangeMove(c1, variableDescriptor ?, c2, c1.getNextCustomer(), c2.getNextCustomer()))
}
}
return moveList;
}
}
But for that I need a variableDescriptor that I don't have.
Any ideas why my CustomChangeMove fails ?
EDIT
After quite some digging I feel that some sort of a circular reference occurs. I find that the method runs fine a few times before throwing an exception and the exception thrown is typically undoing a change that has been done before (due to how I generate these CustomChangeMoves this is not unthinkable).
I find that the exception is always thrown when the change is on the same chain. It occurs when the customer still has a nextCustomer (an @InverseRelationShadowVariable) that is not updated to null which normally it what it normally will be when the previousStandstill is updated.
So, when on the same chain A <- B <- C <- D <- E, the move will be such that to move B behind E: A <- C <- D <- E <- B. This will succeed. The following move will try to put E behind B: A <- C <- D <- B <- E, this is when the exception is thrown. Any ideas on how to deal with this are deeply appreciated.
Also, I don't understand why the move is even executed as isMoveDoable should prevent this from occurring.
java optaplanner
asked Dec 26 '18 at 7:32
k88k88
399315
add a comment |
I want to do a custom change move to chained planning entities.
When certain conditions are met suppose I want to move E such that it comes after B as in the example below.
A <- B <- C and D <- E <- F become A <- C and D <- B <- E <-F
To achieve this I implemented a CustomChangeMove:
public class CustomChangeMove extends AbstractMove<VehicleRoutingSolution> {
private Customer customer;
private Customer toPreviousStandstill;
private Customer oldTrailingEntity;
private Customer newTrailingEntity;
public CustomChangemove(Customer customer, Customer toPreviousStandstill, Customer oldTrailingEntity, Customer newTrailingEntity) {
this.customer = customer;
this.toPreviousStandstill = toPreviousStandstill;
this.oldTrailingEntity = oldTrailingEntity;
this.newTrailingEntity = newTrailingEntity;
}
@Override
protected void doMoveOnGenuineVariables(ScoreDirector<VehicleRoutingSolution> scoreDirector) {
Standstill oldPreviousStandstill = customer.getPreviousStandstill();
scoreDirector.beforeVariableChanged(customer, "previousStandstill" );
//fix old chain
oldTrailingEntity.setPreviousStandstill(oldPreviousStandstill);
// oldPreviousStandstill.setNextCustomer(oldTrailingEntity); // shadow variables are updated automatically
// move object
customer.setPreviousStandstill(toPreviousStandstill);
// customer.setNextCustomer(newTrailingEntity); shadow variable
//fix new chain
toPreviousStandstill.setNextCustomer(customer);
// toPreviousStandstill.setNextCustomer(null);
// newTrailingEntity.setPreviousStandstill(customer); // shadow variable
scoreDirector.afterVariableChanged(customer, "previousStandstill");
}
@Override
public boolean isMoveDoable(ScoreDirector<VehicleRoutingSolution> scoreDirector) {
return !Objects.equals(customer.getPreviousStandstill(), toPreviousStandstill) ||
!Objects.equals(customer.getNextCustomer(), toPreviousStandstill);
}
I would think that configuring the previousStandstills and nextCustomers this way would fix the chains but instead it is yielding me an IllegalStateException:
java.lang.IllegalStateException: The entity (Customer [shipmentId=xx, vehicle=TimeWindowedVehicle [0]]) has a variable (previousStandstill) with value (Customer [xx, vehicle=TimeWindowedVehicle [0]]) which has a sourceVariableName variable (nextCustomer) with a value (Customer [shipmentId=xxxxx-1, vehicle=TimeWindowedVehicle [0]]) which is not null.
Verify the consistency of your input problem for that sourceVariableName variable.
at org.optaplanner.core.impl.domain.variable.inverserelation.SingletonInverseVariableListener.insert(SingletonInverseVariableListener.java:72) ~[optaplanner-core-7.0.0.Final.jar:7.0.0.Final]
at org.optaplanner.core.impl.domain.variable.inverserelation.SingletonInverseVariableListener.afterVariableChanged(SingletonInverseVariableListener.java:51) ~[optaplanner-core-7.0.0.Final.jar:7.0.0.Final]
at org.optaplanner.core.impl.domain.variable.listener.support.VariableListenerSupport.triggerVariableListenersInNotificationQueues(VariableListenerSupport.java:209) ~[optaplanner-core-7.0.0.Final.jar:7.0.0.Final]
at org.optaplanner.core.impl.score.director.AbstractScoreDirector.triggerVariableListeners(AbstractScoreDirector.java:228) ~[optaplanner-core-7.0.0.Final.jar:7.0.0.Final]
at org.optaplanner.core.impl.heuristic.move.AbstractMove.doMove(AbstractMove.java:38) ~[optaplanner-core-7.0.0.Final.jar:7.0.0.Final]
at org.optaplanner.core.impl.heuristic.move.AbstractMove.doMove(AbstractMove.java:27) ~[optaplanner-core-7.0.0.Final.jar:7.0.0.Final]
at org.optaplanner.core.impl.localsearch.decider.LocalSearchDecider.doMove(LocalSearchDecider.java:146) ~[optaplanner-core-7.0.0.Final.jar:7.0.0.Final]
at org.optaplanner.core.impl.localsearch.decider.LocalSearchDecider.decideNextStep(LocalSearchDecider.java:120) ~[optaplanner-core-7.0.0.Final.jar:7.0.0.Final]
at org.optaplanner.core.impl.localsearch.DefaultLocalSearchPhase.solve(DefaultLocalSearchPhase.java:70) ~[optaplanner-core-7.0.0.Final.jar:7.0.0.Final]
at org.optaplanner.core.impl.solver.AbstractSolver.runPhases(AbstractSolver.java:87) ~[optaplanner-core-7.0.0.Final.jar:7.0.0.Final]
at org.optaplanner.core.impl.solver.DefaultSolver.solve(DefaultSolver.java:163) ~[optaplanner-core-7.0.0.Final.jar:7.0.0.Final]
at org.optaplanner.benchmark.impl.SubSingleBenchmarkRunner.call(SubSingleBenchmarkRunner.java:106) ~[optaplanner-benchmark-7.0.0.Final.jar:7.0.0.Final]
at org.optaplanner.benchmark.impl.SubSingleBenchmarkRunner.call(SubSingleBenchmarkRunner.java:34) ~[optaplanner-benchmark-7.0.0.Final.jar:7.0.0.Final]
at java.util.concurrent.FutureTask.run(FutureTask.java:266) ~[na:1.8.0_191]
at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) ~[na:1.8.0_191]
at java.util.concurrent.FutureTask.run(FutureTask.java:266) ~[na:1.8.0_191]
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) ~[na:1.8.0_191]
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) ~[na:1.8.0_191]
at java.lang.Thread.run(Thread.java:748) ~[na:1.8.0_191]
Another idea I have is to use the default ChainedChangeMove:
public class CustomChangeMoveFactory implements MoveListFactory<VehicleRoutingSolution> {
@Override
public List<ChainedChangeMove> createMoveList(VehicleRoutingSolution vrpSol) {
List<ChainedChangeMove> moveList = new ArrayList<>();
List<Customer> customers = vrpSol.getCustomers();
for (Customer c1 : customers) {
for (Customer c2 : customers) {
//if certain condition met add to movelist
moveList.add(new ChainedChangeMove(c1, variableDescriptor ?, c2, c1.getNextCustomer(), c2.getNextCustomer()))
}
}
return moveList;
}
}
But for that I need a variableDescriptor that I don't have.
Any ideas why my CustomChangeMove fails ?
EDIT
After quite some digging I feel that some sort of a circular reference occurs. I find that the method runs fine a few times before throwing an exception and the exception thrown is typically undoing a change that has been done before (due to how I generate these CustomChangeMoves this is not unthinkable).
I find that the exception is always thrown when the change is on the same chain. It occurs when the customer still has a nextCustomer (an @InverseRelationShadowVariable) that is not updated to null which normally it what it normally will be when the previousStandstill is updated.
So, when on the same chain A <- B <- C <- D <- E, the move will be such that to move B behind E: A <- C <- D <- E <- B. This will succeed. The following move will try to put E behind B: A <- C <- D <- B <- E, this is when the exception is thrown. Any ideas on how to deal with this are deeply appreciated.
Also, I don't understand why the move is even executed as isMoveDoable should prevent this from occurring.
java optaplanner
asked Dec 26 '18 at 7:32
k88k88
399315
I want to do a custom change move to chained planning entities.
When certain conditions are met suppose I want to move E such that it comes after B as in the example below.
A <- B <- C and D <- E <- F become A <- C and D <- B <- E <-F
To achieve this I implemented a CustomChangeMove:
public class CustomChangeMove extends AbstractMove<VehicleRoutingSolution> {
private Customer customer;
private Customer toPreviousStandstill;
private Customer oldTrailingEntity;
private Customer newTrailingEntity;
public CustomChangemove(Customer customer, Customer toPreviousStandstill, Customer oldTrailingEntity, Customer newTrailingEntity) {
this.customer = customer;
this.toPreviousStandstill = toPreviousStandstill;
this.oldTrailingEntity = oldTrailingEntity;
this.newTrailingEntity = newTrailingEntity;
}
@Override
protected void doMoveOnGenuineVariables(ScoreDirector<VehicleRoutingSolution> scoreDirector) {
Standstill oldPreviousStandstill = customer.getPreviousStandstill();
scoreDirector.beforeVariableChanged(customer, "previousStandstill" );
//fix old chain
oldTrailingEntity.setPreviousStandstill(oldPreviousStandstill);
// oldPreviousStandstill.setNextCustomer(oldTrailingEntity); // shadow variables are updated automatically
// move object
customer.setPreviousStandstill(toPreviousStandstill);
// customer.setNextCustomer(newTrailingEntity); shadow variable
//fix new chain
toPreviousStandstill.setNextCustomer(customer);
// toPreviousStandstill.setNextCustomer(null);
// newTrailingEntity.setPreviousStandstill(customer); // shadow variable
scoreDirector.afterVariableChanged(customer, "previousStandstill");
}
@Override
public boolean isMoveDoable(ScoreDirector<VehicleRoutingSolution> scoreDirector) {
return !Objects.equals(customer.getPreviousStandstill(), toPreviousStandstill) ||
!Objects.equals(customer.getNextCustomer(), toPreviousStandstill);
}
I would think that configuring the previousStandstills and nextCustomers this way would fix the chains but instead it is yielding me an IllegalStateException:
java.lang.IllegalStateException: The entity (Customer [shipmentId=xx, vehicle=TimeWindowedVehicle [0]]) has a variable (previousStandstill) with value (Customer [xx, vehicle=TimeWindowedVehicle [0]]) which has a sourceVariableName variable (nextCustomer) with a value (Customer [shipmentId=xxxxx-1, vehicle=TimeWindowedVehicle [0]]) which is not null.
Verify the consistency of your input problem for that sourceVariableName variable.
at org.optaplanner.core.impl.domain.variable.inverserelation.SingletonInverseVariableListener.insert(SingletonInverseVariableListener.java:72) ~[optaplanner-core-7.0.0.Final.jar:7.0.0.Final]
at org.optaplanner.core.impl.domain.variable.inverserelation.SingletonInverseVariableListener.afterVariableChanged(SingletonInverseVariableListener.java:51) ~[optaplanner-core-7.0.0.Final.jar:7.0.0.Final]
at org.optaplanner.core.impl.domain.variable.listener.support.VariableListenerSupport.triggerVariableListenersInNotificationQueues(VariableListenerSupport.java:209) ~[optaplanner-core-7.0.0.Final.jar:7.0.0.Final]
at org.optaplanner.core.impl.score.director.AbstractScoreDirector.triggerVariableListeners(AbstractScoreDirector.java:228) ~[optaplanner-core-7.0.0.Final.jar:7.0.0.Final]
at org.optaplanner.core.impl.heuristic.move.AbstractMove.doMove(AbstractMove.java:38) ~[optaplanner-core-7.0.0.Final.jar:7.0.0.Final]
at org.optaplanner.core.impl.heuristic.move.AbstractMove.doMove(AbstractMove.java:27) ~[optaplanner-core-7.0.0.Final.jar:7.0.0.Final]
at org.optaplanner.core.impl.localsearch.decider.LocalSearchDecider.doMove(LocalSearchDecider.java:146) ~[optaplanner-core-7.0.0.Final.jar:7.0.0.Final]
at org.optaplanner.core.impl.localsearch.decider.LocalSearchDecider.decideNextStep(LocalSearchDecider.java:120) ~[optaplanner-core-7.0.0.Final.jar:7.0.0.Final]
at org.optaplanner.core.impl.localsearch.DefaultLocalSearchPhase.solve(DefaultLocalSearchPhase.java:70) ~[optaplanner-core-7.0.0.Final.jar:7.0.0.Final]
at org.optaplanner.core.impl.solver.AbstractSolver.runPhases(AbstractSolver.java:87) ~[optaplanner-core-7.0.0.Final.jar:7.0.0.Final]
at org.optaplanner.core.impl.solver.DefaultSolver.solve(DefaultSolver.java:163) ~[optaplanner-core-7.0.0.Final.jar:7.0.0.Final]
at org.optaplanner.benchmark.impl.SubSingleBenchmarkRunner.call(SubSingleBenchmarkRunner.java:106) ~[optaplanner-benchmark-7.0.0.Final.jar:7.0.0.Final]
at org.optaplanner.benchmark.impl.SubSingleBenchmarkRunner.call(SubSingleBenchmarkRunner.java:34) ~[optaplanner-benchmark-7.0.0.Final.jar:7.0.0.Final]
at java.util.concurrent.FutureTask.run(FutureTask.java:266) ~[na:1.8.0_191]
at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) ~[na:1.8.0_191]
at java.util.concurrent.FutureTask.run(FutureTask.java:266) ~[na:1.8.0_191]
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) ~[na:1.8.0_191]
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) ~[na:1.8.0_191]
at java.lang.Thread.run(Thread.java:748) ~[na:1.8.0_191]
Another idea I have is to use the default ChainedChangeMove:
public class CustomChangeMoveFactory implements MoveListFactory<VehicleRoutingSolution> {
@Override
public List<ChainedChangeMove> createMoveList(VehicleRoutingSolution vrpSol) {
List<ChainedChangeMove> moveList = new ArrayList<>();
List<Customer> customers = vrpSol.getCustomers();
for (Customer c1 : customers) {
for (Customer c2 : customers) {
//if certain condition met add to movelist
moveList.add(new ChainedChangeMove(c1, variableDescriptor ?, c2, c1.getNextCustomer(), c2.getNextCustomer()))
}
}
return moveList;
}
}
But for that I need a variableDescriptor that I don't have.
Any ideas why my CustomChangeMove fails ?
EDIT
After quite some digging I feel that some sort of a circular reference occurs. I find that the method runs fine a few times before throwing an exception and the exception thrown is typically undoing a change that has been done before (due to how I generate these CustomChangeMoves this is not unthinkable).
I find that the exception is always thrown when the change is on the same chain. It occurs when the customer still has a nextCustomer (an @InverseRelationShadowVariable) that is not updated to null which normally it what it normally will be when the previousStandstill is updated.
So, when on the same chain A <- B <- C <- D <- E, the move will be such that to move B behind E: A <- C <- D <- E <- B. This will succeed. The following move will try to put E behind B: A <- C <- D <- B <- E, this is when the exception is thrown. Any ideas on how to deal with this are deeply appreciated.
Also, I don't understand why the move is even executed as isMoveDoable should prevent this from occurring.
java optaplanner
java optaplanner
asked Dec 26 '18 at 7:32
k88k88
399315
asked Dec 26 '18 at 7:32
k88k88
399315
edited Jan 2 at 3:07
k88
asked Dec 26 '18 at 7:32
k88k88
399315
asked Dec 26 '18 at 7:32
k88k88
399315
asked Dec 26 '18 at 7:32
k88k88
399315
399315
add a comment |
add a comment |
1 Answer
1
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I figured it out I think. So far my implementation seems to work good and the issue seems to be occurring in createUndoMove code that I had not posted and which was wrong.
This full code seems to work (at least there are no exceptions being thrown):
public class CustomChangeMove extends AbstractMove<VehicleRoutingSolution> {
private Customer customer;
private Customer toPreviousStandstill;
private Customer oldTrailingEntity;
private Customer newTrailingEntity;
public CustomChangemove(Customer customer, Customer toPreviousStandstill, Customer oldTrailingEntity, Customer newTrailingEntity) {
this.customer = customer;
this.toPreviousStandstill = toPreviousStandstill;
this.oldTrailingEntity = oldTrailingEntity;
this.newTrailingEntity = newTrailingEntity;
}
@Override
protected void doMoveOnGenuineVariables(ScoreDirector<VehicleRoutingSolution> scoreDirector) {
Standstill oldPreviousStandstill = customer.getPreviousStandstill();
// move object
scoreDirector.beforeVariableChanged(customer, "previousStandstill" );
customer.setPreviousStandstill(toPreviousStandstill);
scoreDirector.afterVariableChanged(customer, "previousStandstill");
//fix old chain
if (oldTrailingEntity != null) {
scoreDirector.beforeVariableChanged(oldTrailingEntity, "previousStandstill" );
oldTrailingEntity.setPreviousStandstill(oldPreviousStandstill);
scoreDirector.afterVariableChanged(oldTrailingEntity, "previousStandstill");
}
//fix new chain
if (newTrailingEntity != null) {
scoreDirector.beforeVariableChanged(newTrailingEntity, "previousStandstill" );
newTrailingEntity.setPreviousStandstill(customer);
scoreDirector.afterVariableChanged(newTrailingEntity, "previousStandstill");
}
}
@Override
public boolean isMoveDoable(ScoreDirector<VehicleRoutingSolution> scoreDirector) {
return !Objects.equals(customer.getPreviousStandstill(), toPreviousStandstill) ||
!Objects.equals(customer.getNextCustomer(), toPreviousStandstill);
}
@Override
protected AbstractMove<VehicleRoutingSolution> createUndoMove(ScoreDirector<VehicleRoutingSolution> scoreDirector) {
return new MultidropChangeMove(customer, customer.getPreviousStandstill(), newTrailingEntity, oldTrailingEntity);
}
@Override
public Collection<?> getPlanningEntities() {
// return Arrays.asList(customer, newTrailingEntity, oldTrailingEntity);
return Collections.singletonList(customer);
}
@Override
public Collection<?> getPlanningValues() {
// return Arrays.asList(customer.getPreviousStandstill(), newTrailingEntity.getPreviousStandstill(), oldTrailingEntity.getPreviousStandstill());
return Collections.singleton(customer.getPreviousStandstill());
}
EDIT
This answer was also not right, the problem was solved coincidentally because it occured in some datasets while others were exempt.
The solution seems to be to not store the changing entities at construction time of the move as these are subjected to change later.
So a constructor of
public CustomChangemove(Customer customer, Customer toPreviousStandstill) {
this.customer = customer;
this.toPreviousStandstill = toPreviousStandstill;
}
is much better, oldTrailingEntity and newTrailingEntity can then be retrieved in doMoveOnGenuinineVariables as customer.getNextCustomer() or toPreviousStandstill.getNextCustomer(). This ensures the correct entities are retrieved and not some entity that has been changed.
answered Jan 2 at 4:51
k88k88
399315
add a comment |
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1 Answer
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1 Answer
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active
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votes
I figured it out I think. So far my implementation seems to work good and the issue seems to be occurring in createUndoMove code that I had not posted and which was wrong.
This full code seems to work (at least there are no exceptions being thrown):
public class CustomChangeMove extends AbstractMove<VehicleRoutingSolution> {
private Customer customer;
private Customer toPreviousStandstill;
private Customer oldTrailingEntity;
private Customer newTrailingEntity;
public CustomChangemove(Customer customer, Customer toPreviousStandstill, Customer oldTrailingEntity, Customer newTrailingEntity) {
this.customer = customer;
this.toPreviousStandstill = toPreviousStandstill;
this.oldTrailingEntity = oldTrailingEntity;
this.newTrailingEntity = newTrailingEntity;
}
@Override
protected void doMoveOnGenuineVariables(ScoreDirector<VehicleRoutingSolution> scoreDirector) {
Standstill oldPreviousStandstill = customer.getPreviousStandstill();
// move object
scoreDirector.beforeVariableChanged(customer, "previousStandstill" );
customer.setPreviousStandstill(toPreviousStandstill);
scoreDirector.afterVariableChanged(customer, "previousStandstill");
//fix old chain
if (oldTrailingEntity != null) {
scoreDirector.beforeVariableChanged(oldTrailingEntity, "previousStandstill" );
oldTrailingEntity.setPreviousStandstill(oldPreviousStandstill);
scoreDirector.afterVariableChanged(oldTrailingEntity, "previousStandstill");
}
//fix new chain
if (newTrailingEntity != null) {
scoreDirector.beforeVariableChanged(newTrailingEntity, "previousStandstill" );
newTrailingEntity.setPreviousStandstill(customer);
scoreDirector.afterVariableChanged(newTrailingEntity, "previousStandstill");
}
}
@Override
public boolean isMoveDoable(ScoreDirector<VehicleRoutingSolution> scoreDirector) {
return !Objects.equals(customer.getPreviousStandstill(), toPreviousStandstill) ||
!Objects.equals(customer.getNextCustomer(), toPreviousStandstill);
}
@Override
protected AbstractMove<VehicleRoutingSolution> createUndoMove(ScoreDirector<VehicleRoutingSolution> scoreDirector) {
return new MultidropChangeMove(customer, customer.getPreviousStandstill(), newTrailingEntity, oldTrailingEntity);
}
@Override
public Collection<?> getPlanningEntities() {
// return Arrays.asList(customer, newTrailingEntity, oldTrailingEntity);
return Collections.singletonList(customer);
}
@Override
public Collection<?> getPlanningValues() {
// return Arrays.asList(customer.getPreviousStandstill(), newTrailingEntity.getPreviousStandstill(), oldTrailingEntity.getPreviousStandstill());
return Collections.singleton(customer.getPreviousStandstill());
}
EDIT
This answer was also not right, the problem was solved coincidentally because it occured in some datasets while others were exempt.
The solution seems to be to not store the changing entities at construction time of the move as these are subjected to change later.
So a constructor of
public CustomChangemove(Customer customer, Customer toPreviousStandstill) {
this.customer = customer;
this.toPreviousStandstill = toPreviousStandstill;
}
is much better, oldTrailingEntity and newTrailingEntity can then be retrieved in doMoveOnGenuinineVariables as customer.getNextCustomer() or toPreviousStandstill.getNextCustomer(). This ensures the correct entities are retrieved and not some entity that has been changed.
answered Jan 2 at 4:51
k88k88
399315
add a comment |
I figured it out I think. So far my implementation seems to work good and the issue seems to be occurring in createUndoMove code that I had not posted and which was wrong.
This full code seems to work (at least there are no exceptions being thrown):
public class CustomChangeMove extends AbstractMove<VehicleRoutingSolution> {
private Customer customer;
private Customer toPreviousStandstill;
private Customer oldTrailingEntity;
private Customer newTrailingEntity;
public CustomChangemove(Customer customer, Customer toPreviousStandstill, Customer oldTrailingEntity, Customer newTrailingEntity) {
this.customer = customer;
this.toPreviousStandstill = toPreviousStandstill;
this.oldTrailingEntity = oldTrailingEntity;
this.newTrailingEntity = newTrailingEntity;
}
@Override
protected void doMoveOnGenuineVariables(ScoreDirector<VehicleRoutingSolution> scoreDirector) {
Standstill oldPreviousStandstill = customer.getPreviousStandstill();
// move object
scoreDirector.beforeVariableChanged(customer, "previousStandstill" );
customer.setPreviousStandstill(toPreviousStandstill);
scoreDirector.afterVariableChanged(customer, "previousStandstill");
//fix old chain
if (oldTrailingEntity != null) {
scoreDirector.beforeVariableChanged(oldTrailingEntity, "previousStandstill" );
oldTrailingEntity.setPreviousStandstill(oldPreviousStandstill);
scoreDirector.afterVariableChanged(oldTrailingEntity, "previousStandstill");
}
//fix new chain
if (newTrailingEntity != null) {
scoreDirector.beforeVariableChanged(newTrailingEntity, "previousStandstill" );
newTrailingEntity.setPreviousStandstill(customer);
scoreDirector.afterVariableChanged(newTrailingEntity, "previousStandstill");
}
}
@Override
public boolean isMoveDoable(ScoreDirector<VehicleRoutingSolution> scoreDirector) {
return !Objects.equals(customer.getPreviousStandstill(), toPreviousStandstill) ||
!Objects.equals(customer.getNextCustomer(), toPreviousStandstill);
}
@Override
protected AbstractMove<VehicleRoutingSolution> createUndoMove(ScoreDirector<VehicleRoutingSolution> scoreDirector) {
return new MultidropChangeMove(customer, customer.getPreviousStandstill(), newTrailingEntity, oldTrailingEntity);
}
@Override
public Collection<?> getPlanningEntities() {
// return Arrays.asList(customer, newTrailingEntity, oldTrailingEntity);
return Collections.singletonList(customer);
}
@Override
public Collection<?> getPlanningValues() {
// return Arrays.asList(customer.getPreviousStandstill(), newTrailingEntity.getPreviousStandstill(), oldTrailingEntity.getPreviousStandstill());
return Collections.singleton(customer.getPreviousStandstill());
}
EDIT
This answer was also not right, the problem was solved coincidentally because it occured in some datasets while others were exempt.
The solution seems to be to not store the changing entities at construction time of the move as these are subjected to change later.
So a constructor of
public CustomChangemove(Customer customer, Customer toPreviousStandstill) {
this.customer = customer;
this.toPreviousStandstill = toPreviousStandstill;
}
is much better, oldTrailingEntity and newTrailingEntity can then be retrieved in doMoveOnGenuinineVariables as customer.getNextCustomer() or toPreviousStandstill.getNextCustomer(). This ensures the correct entities are retrieved and not some entity that has been changed.
answered Jan 2 at 4:51
k88k88
399315
add a comment |
I figured it out I think. So far my implementation seems to work good and the issue seems to be occurring in createUndoMove code that I had not posted and which was wrong.
This full code seems to work (at least there are no exceptions being thrown):
public class CustomChangeMove extends AbstractMove<VehicleRoutingSolution> {
private Customer customer;
private Customer toPreviousStandstill;
private Customer oldTrailingEntity;
private Customer newTrailingEntity;
public CustomChangemove(Customer customer, Customer toPreviousStandstill, Customer oldTrailingEntity, Customer newTrailingEntity) {
this.customer = customer;
this.toPreviousStandstill = toPreviousStandstill;
this.oldTrailingEntity = oldTrailingEntity;
this.newTrailingEntity = newTrailingEntity;
}
@Override
protected void doMoveOnGenuineVariables(ScoreDirector<VehicleRoutingSolution> scoreDirector) {
Standstill oldPreviousStandstill = customer.getPreviousStandstill();
// move object
scoreDirector.beforeVariableChanged(customer, "previousStandstill" );
customer.setPreviousStandstill(toPreviousStandstill);
scoreDirector.afterVariableChanged(customer, "previousStandstill");
//fix old chain
if (oldTrailingEntity != null) {
scoreDirector.beforeVariableChanged(oldTrailingEntity, "previousStandstill" );
oldTrailingEntity.setPreviousStandstill(oldPreviousStandstill);
scoreDirector.afterVariableChanged(oldTrailingEntity, "previousStandstill");
}
//fix new chain
if (newTrailingEntity != null) {
scoreDirector.beforeVariableChanged(newTrailingEntity, "previousStandstill" );
newTrailingEntity.setPreviousStandstill(customer);
scoreDirector.afterVariableChanged(newTrailingEntity, "previousStandstill");
}
}
@Override
public boolean isMoveDoable(ScoreDirector<VehicleRoutingSolution> scoreDirector) {
return !Objects.equals(customer.getPreviousStandstill(), toPreviousStandstill) ||
!Objects.equals(customer.getNextCustomer(), toPreviousStandstill);
}
@Override
protected AbstractMove<VehicleRoutingSolution> createUndoMove(ScoreDirector<VehicleRoutingSolution> scoreDirector) {
return new MultidropChangeMove(customer, customer.getPreviousStandstill(), newTrailingEntity, oldTrailingEntity);
}
@Override
public Collection<?> getPlanningEntities() {
// return Arrays.asList(customer, newTrailingEntity, oldTrailingEntity);
return Collections.singletonList(customer);
}
@Override
public Collection<?> getPlanningValues() {
// return Arrays.asList(customer.getPreviousStandstill(), newTrailingEntity.getPreviousStandstill(), oldTrailingEntity.getPreviousStandstill());
return Collections.singleton(customer.getPreviousStandstill());
}
EDIT
This answer was also not right, the problem was solved coincidentally because it occured in some datasets while others were exempt.
The solution seems to be to not store the changing entities at construction time of the move as these are subjected to change later.
So a constructor of
public CustomChangemove(Customer customer, Customer toPreviousStandstill) {
this.customer = customer;
this.toPreviousStandstill = toPreviousStandstill;
}
is much better, oldTrailingEntity and newTrailingEntity can then be retrieved in doMoveOnGenuinineVariables as customer.getNextCustomer() or toPreviousStandstill.getNextCustomer(). This ensures the correct entities are retrieved and not some entity that has been changed.
answered Jan 2 at 4:51
k88k88
399315
I figured it out I think. So far my implementation seems to work good and the issue seems to be occurring in createUndoMove code that I had not posted and which was wrong.
This full code seems to work (at least there are no exceptions being thrown):
public class CustomChangeMove extends AbstractMove<VehicleRoutingSolution> {
private Customer customer;
private Customer toPreviousStandstill;
private Customer oldTrailingEntity;
private Customer newTrailingEntity;
public CustomChangemove(Customer customer, Customer toPreviousStandstill, Customer oldTrailingEntity, Customer newTrailingEntity) {
this.customer = customer;
this.toPreviousStandstill = toPreviousStandstill;
this.oldTrailingEntity = oldTrailingEntity;
this.newTrailingEntity = newTrailingEntity;
}
@Override
protected void doMoveOnGenuineVariables(ScoreDirector<VehicleRoutingSolution> scoreDirector) {
Standstill oldPreviousStandstill = customer.getPreviousStandstill();
// move object
scoreDirector.beforeVariableChanged(customer, "previousStandstill" );
customer.setPreviousStandstill(toPreviousStandstill);
scoreDirector.afterVariableChanged(customer, "previousStandstill");
//fix old chain
if (oldTrailingEntity != null) {
scoreDirector.beforeVariableChanged(oldTrailingEntity, "previousStandstill" );
oldTrailingEntity.setPreviousStandstill(oldPreviousStandstill);
scoreDirector.afterVariableChanged(oldTrailingEntity, "previousStandstill");
}
//fix new chain
if (newTrailingEntity != null) {
scoreDirector.beforeVariableChanged(newTrailingEntity, "previousStandstill" );
newTrailingEntity.setPreviousStandstill(customer);
scoreDirector.afterVariableChanged(newTrailingEntity, "previousStandstill");
}
}
@Override
public boolean isMoveDoable(ScoreDirector<VehicleRoutingSolution> scoreDirector) {
return !Objects.equals(customer.getPreviousStandstill(), toPreviousStandstill) ||
!Objects.equals(customer.getNextCustomer(), toPreviousStandstill);
}
@Override
protected AbstractMove<VehicleRoutingSolution> createUndoMove(ScoreDirector<VehicleRoutingSolution> scoreDirector) {
return new MultidropChangeMove(customer, customer.getPreviousStandstill(), newTrailingEntity, oldTrailingEntity);
}
@Override
public Collection<?> getPlanningEntities() {
// return Arrays.asList(customer, newTrailingEntity, oldTrailingEntity);
return Collections.singletonList(customer);
}
@Override
public Collection<?> getPlanningValues() {
// return Arrays.asList(customer.getPreviousStandstill(), newTrailingEntity.getPreviousStandstill(), oldTrailingEntity.getPreviousStandstill());
return Collections.singleton(customer.getPreviousStandstill());
}
EDIT
This answer was also not right, the problem was solved coincidentally because it occured in some datasets while others were exempt.
The solution seems to be to not store the changing entities at construction time of the move as these are subjected to change later.
So a constructor of
public CustomChangemove(Customer customer, Customer toPreviousStandstill) {
this.customer = customer;
this.toPreviousStandstill = toPreviousStandstill;
}
is much better, oldTrailingEntity and newTrailingEntity can then be retrieved in doMoveOnGenuinineVariables as customer.getNextCustomer() or toPreviousStandstill.getNextCustomer(). This ensures the correct entities are retrieved and not some entity that has been changed.
answered Jan 2 at 4:51
k88k88
399315
edited Jan 9 at 1:05
answered Jan 2 at 4:51
k88k88
399315
answered Jan 2 at 4:51
k88k88
399315
answered Jan 2 at 4:51
k88k88
399315
399315
add a comment |
add a comment |
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