Re: [rules-users] Inserting new Object

Hi Edson, I can't provide a test case. But I've figured out what the exception are about. It's not about the code I've posted before. It's about the exceptions that the java.util.Set.add() method throws. I've attached the concerned code at the end. That means for me I have to manage the exception handling. I've tried to google the topic. The best I came up with is a mailing list entry: http://drools-java-rules-engine.46999.n3.nabble.com/Exception-handling-po... Would that be the correct solution? If yes, how do I implement the handler? I would be thankful for a code example. The code that the exception references is: declare Watcher @role ( event ) triggeringValue : Value numberOfContainedValues : int valueSet : Set // Set<Value> end // .... function Watcher generateWatcherEvent(Value firstValue) { Watcher watcher = new Watcher(); watcher.setNumberOfContainedValues(1); watcher.setTriggeringValue(firstValue); // add value to set Set set = watcher.getValueSet(); set.add(firstValue); watcher.setValueSet(set); return watcher; } Thanks for your help! :) Tina Am 13.08.2010 01:14, schrieb Edson Tirelli: