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I have been trying to install Drools planner. I downloaded it, installed the plug-in, created a run-time, and created a new project. However, I run into build errors in the rules file: The constructor IntConstraintOccurrence(String, Object[]) is ambiguous. This code works perfectly fine on my friend's computer (also using eclipse), so I know it is not an error in the code, but I have not been able to figure what is the problem. Anyone have this problem before?

Geoffrey De Smet
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user2225232
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  • Good news is that in 6.0.0, the IntConstraintOccurrence will be replaced by the much faster scoreHolder.addConstraintMatch, which doesn't need the causes parameter (it figures it out automatically) – Geoffrey De Smet Mar 31 '13 at 11:56

1 Answers1

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Upgrade to OptaPlanner (= Drools Planner) 6.0.x and avoid the Object[] parameter all together.

Geoffrey De Smet
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