[jBPM] - Message Event (throw and catch problem)
by krishanps
krishanps [http://community.jboss.org/people/krishanps] created the discussion
"Message Event (throw and catch problem)"
To view the discussion, visit: http://community.jboss.org/message/643239#643239
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Merry X-Mas, hope you all enjoyed also the holidays.
I have short question, when I use message event to throw and catch it doesn't work, I only get as a output "Sending message: MyValue". If I instead uses signal events in the way that I replace both times the line EventMessage.bpmn2 it works properly.
<messageEventDefinition messageRef="_8_Message"/> with the line <signalEventDefinition signalRef="_8_Message"/>
Can you please tell me what could be the problem and how I can fix it?
Thank you very much
My *.bpmn file:
<!-- Throw a message event --> <intermediateThrowEvent id="_7" name="Script" > <dataInput id="_7_Input" /> <dataInputAssociation> <sourceRef>x</sourceRef> <targetRef>_7_Input</targetRef> </dataInputAssociation> <inputSet> <dataInputRefs>_7_Input</dataInputRefs> </inputSet> <messageEventDefinition messageRef="_8_Message"/> </intermediateThrowEvent> <!-- Catch a message event -->
My *.java file:
public static final void main(String[] args) { try { // load up the knowledge base KnowledgeBase kbase = readKnowledgeBase(); StatefulKnowledgeSession ksession = kbase.newStatefulKnowledgeSession(); KnowledgeRuntimeLogger logger = KnowledgeRuntimeLoggerFactory.newFileLogger(ksession, "test"); ksession.getWorkItemManager().registerWorkItemHandler("Human Task", new DoNothingWorkItemHandler()); ksession.getWorkItemManager().registerWorkItemHandler("Send Task", new SendTaskHandler()); Map<String, Object> params = new HashMap<String, Object>(); params.put("x", "MyValue"); params.put("y", "OtherValue"); // start a new process instance ksession.startProcess("IntermediateCatchEvent", params); logger.close(); } catch (Throwable t) { t.printStackTrace(); } } private static KnowledgeBase readKnowledgeBase() throws Exception { KnowledgeBuilder kbuilder = KnowledgeBuilderFactory.newKnowledgeBuilder(); kbuilder.add(ResourceFactory.newClassPathResource("EventMessage.bpmn2"), ResourceType.BPMN2); return kbuilder.newKnowledgeBase(); }
If I instead replace the both times the line
<messageEventDefinition messageRef="_8_Message"/>
with the line <signalEventDefinition signalRef="_8_Message"/>
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