NullPointerException if throw a not catched exception/error

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nandoztx

Hi guys!
Maybe this behavior must be a bug… a don't know.
If, inside a scriptTask or serviceTask, whatever, throw a unexpected BpmnError like: "Hulk smash":
and haven't a generic boundaryEvent to detect it or a specific errorEventDefinition to treat this, so, a NullPointerException is throwed! But why?

throw new BpmnError("Hulk smash");
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I take a look in this code at AbstractEventAtomicOperation:

public void execute(InterpretableExecution execution) {
    ScopeImpl scope = getScope(execution);
List<ExecutionListener> exectionListeners = scope.getExecutionListeners(getEventName());
    int executionListenerIndex = execution.getExecutionListenerIndex();
(…)
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the problem is this var scope, this is null when haven't a boundaryEvent to catch exceptions…
The most weard is the warning before error:

11/10/2012 10:27:33 org.activiti.engine.impl.bpmn.helper.ErrorPropagation propagateError
INFO: testeScript throws error event with errorCode 'Hulk smash', but no catching boundary event was defined. Execution will simply be ended (none end event semantics).
11/10/2012 10:29:51 org.activiti.engine.impl.interceptor.CommandContext close
GRAVE: Error while closing command context
java.lang.NullPointerException
   at org.activiti.engine.impl.pvm.runtime.AbstractEventAtomicOperation.execute(AbstractEventAtomicOperation.java:42)
   at org.activiti.engine.impl.interceptor.CommandContext.performOperation(CommandContext.java:80)
(…)
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If "Execution will simply be ended (none end event semantics)." , why NullPointerException?

I can avoid this exception if put a generic or specific exception treatment, my code:

<scriptTask id="testeScript" name="Teste script" scriptFormat="groovy">
  <script><![CDATA[
   osama = "Osama";
        throw new BpmnError("Hulk smash");                     
   osama2="Osama2222";      
  ]]></script>
</scriptTask>

<boundaryEvent id="catchErrorGeneric" attachedToRef="testeScript" cancelActivity="true">
   <errorEventDefinition id="genericError" />
</boundaryEvent>

<sequenceFlow sourceRef="catchErrorGeneric" targetRef="printaGeneric" />

<scriptTask id="printaGeneric" name="Generic script" scriptFormat="groovy">
  <script><![CDATA[ 
        println("generic error/exception man!");
  ]]></script>
</scriptTask>

<sequenceFlow sourceRef="printaGeneric" targetRef="theEnd" />
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Thank's in advance.

frederikherema1

Can you poor this into an executable unit-test, so we can see the exact process and reproduce this issue? See the sticky in the forum on how to do this.

Judging from the process extract , I don't see anything who wrong that should cause the NPE. The execution should indeed just simply be ended.
Also, be careful with mentioning "osama" in your posts, don't want the FBI to flag activiti as a terrorist engine