Re: [rules-users] Optaplanner - Issue with real-time, chained and shadow variables

On 04-11-13 13:10, Juan Ignacio Barisich wrote: Geoffrey, thanks for response. The the Customer "toRemove" instance IS the same instance as which is in the workingSolution's Customer list. In fact, in the test example I have attached, I get that instance via: final Customer toRemove = workingSolution.getCustomerList().get(0); Ok, then that's not the problem indeed. I try to reproduce the hack in CloudBalancing's problemFactChange implementation, but with no success. I mean, I tried: // to clean the next variable of previous in the chain Standstill prev = toRemove.getPreviousStandstill(); scoreDirector.beforeEntityRemoved(prev); prev.setNextCustomer(null); scoreDirector.afterEntityRemoved(prev); but this throw an exception like: java.lang.IllegalStateException: The entity (1(after 66)) has a variable (previousStandstill) with value (66(after 51)) which has a mappedBy variable (nextCustomer) with a value (null) which is not that entity. Ah, that explains it. Although you remove the customer instance toRemove, one of the other customers still has it as previousStandstill and/or one of the other customers still has it as nextStandstill. Also, i try to clean the previous variable of the following item in the chain: // to clean the previous variable of the following customer in the chain Customer nextCustomer = toRemove.getNextCustomer(); if (nextCustomer != null) { scoreDirector.beforeEntityRemoved(nextCustomer); nextCustomer.setPreviousStandstill(null); scoreDirector.beforeEntityRemoved(nextCustomer); } but this throw an exception like: java.lang.IllegalStateException: The ScoreDirector (class org.optaplanner.core.impl.score.director.common.TrailingEntityMapSupport) is corrupted, because the entity (10(after null)) for chained planningVariable (previousStandstill) cannot be retracted: it was never inserted. Can you take a look to the test I have attached and guide me to solve this? Thanks a lot. Regards 2013/11/4 Geoffrey De Smet <ge0ffrey.spam(a)gmail.com&gt; > > On 01-11-13 19:38, Juan Ignacio Barisich wrote: > > Hi everybody > I am using optaplanner in real-time style. My application domain is > similar to the "Vehicle Routing" example ( > http://docs.jboss.org/drools/release/6.0.0.CR5/optaplanner-docs/html_sing...). > I mean, I am using chained variables and shadow variables. I have a problem > while trying to remove a fact (an entity), via a ProblemFactChange: > > java.lang.IllegalArgumentException: The entity instance (...) was never > added to this ScoreDirector. Usually the cause is that that specific > instance was not in your Solution's entities. > > The fact removing that I made is like: > > solver.addProblemFactChange(new ProblemFactChange() { > > @Override > public void doChange(ScoreDirector scoreDirector) { > ... > scoreDirector.beforeEntityRemoved(toRemove); > workingSolution.getCustomerList().remove(toRemove); > > the remove() method will make no difference because the Customer > "toRemove" instance > is not the same instance as which is in the workingSolution's Customer > list. > > See the CloudBalancing's PRoblemFactChange implementation how to solve > this. > And one of the warnings in the Real-time planning section of the docs to > understand it better:) > > scoreDirector.afterEntityRemoved(toRemove); > } > }); > > I think the problem is there. Do you know what I'm doing wrong? > I have attached a test case based on the "Vehicle Routing". To run it, > just put that file into the > optaplanner-distribution-6.0.0.CR5/examples/sources/src/test/java/org/optaplanner/examples/vehiclerouting/app/ > directory. > > <http://drools.46999.n3.nabble.com/file/n4017760/serverlog.zip>I'd > appreciate any ideas on how to resolve this. > Best regards, > > Juan Ignacio Barisich > > > > > > > _______________________________________________ > rules-users mailing listrules-users@lists.jboss.orghttps://lists.jboss.org/mailman/listinfo/rules-users > > > > _______________________________________________ > rules-users mailing list > rules-users(a)lists.jboss.org > https://lists.jboss.org/mailman/listinfo/rules-users > _______________________________________________ rules-users mailing listrules-users@lists.jboss.orghttps://lists.jboss.org/mailman/listinfo/rules-users _______________________________________________ rules-users mailing list rules-users(a)lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users