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_single/index.html#vehicleRouting). 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);

                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.

I'd appreciate any ideas on how to resolve this.

Best regards,

Juan Ignacio Barisich

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