Problems with recognizing MessageEvent definitions

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Rob van Dort

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Dec 23, 2015, 3:58:30 AM12/23/15

to camunda BPM platform contributors

In our project we are experiencing problems with Camunda recognizing MessageEvent definitions (both StartEvent / IntermediateEvent) when message are difined using an EventDefinitionRef instead of a MessageEventDefinition.

Error in Camunda or am I doing something wrong?

Best, Rob.

See simple example BPMN files below.

======================================

BPMN file with EventDefintionRef, StartEvent not recognized as MessageStartEvent:

<?xml version="1.0" encoding="UTF-8"?>

<semantic:definitions xmlns:semantic="http://www.omg.org/spec/BPMN/20100524/MODEL" xmlns:bpmndi="http://www.omg.org/spec/BPMN/20100524/DI" xmlns:dc="http://www.omg.org/spec/DD/20100524/DC" xmlns:di="http://www.omg.org/spec/DD/20100524/DI" id="ARISBPMN_5a4e5841-a587-11e5-05de-005056ac0add" targetNamespace="http://www.softwareag.com/bpmn2Serialisation/Var00a - Simple BPMN Process Diagram">

<semantic:messageEventDefinition id="MESSAGE_EVENT_DEF_1" messageRef="MESSAGE_1" />

<semantic:message id="MESSAGE_1" />

<semantic:process id="PROCESS_1" isExecutable="true" name="Simple BPMN Process Diagram">

<semantic:laneSet id="LANESET_1">

<semantic:lane id="FLOWNODE_1" name="SalesSupport">

<semantic:flowNodeRef>FLOWNODE_2</semantic:flowNodeRef>

<semantic:flowNodeRef>FLOWNODE_3</semantic:flowNodeRef>

<semantic:flowNodeRef>FLOWNODE_4</semantic:flowNodeRef>

</semantic:lane>

</semantic:laneSet>

<semantic:startEvent id="FLOWNODE_2" name="RequestForOfferReceived">

<semantic:outgoing>FLOW_1</semantic:outgoing>

<semantic:eventDefinitionRef>MESSAGE_EVENT_DEF_1</semantic:eventDefinitionRef>

</semantic:startEvent>

<semantic:task id="FLOWNODE_3" name="ProcessRequest">

<semantic:incoming>FLOW_1</semantic:incoming>

<semantic:outgoing>FLOW_2</semantic:outgoing>

</semantic:task>

<semantic:endEvent id="FLOWNODE_4" name="RequestProcessed">

<semantic:incoming>FLOW_2</semantic:incoming>

</semantic:endEvent>

<semantic:sequenceFlow id="FLOW_1" sourceRef="FLOWNODE_2" targetRef="FLOWNODE_3" />

<semantic:sequenceFlow id="FLOW_2" sourceRef="FLOWNODE_3" targetRef="FLOWNODE_4" />

</semantic:process>

<bpmndi:BPMNDiagram id="DIAGRAM_1" name="Simple BPMN Process Diagram">

<bpmndi:BPMNPlane bpmnElement="PROCESS_1">

<bpmndi:BPMNEdge bpmnElement="FLOW_1" id="EDGE_1">

<di:waypoint x="423" y="223" />

<di:waypoint x="516" y="223" />

<bpmndi:BPMNLabel />

</bpmndi:BPMNEdge>

<bpmndi:BPMNEdge bpmnElement="FLOW_2" id="EDGE_2">

<di:waypoint x="613" y="223" />

<di:waypoint x="707" y="223" />

<bpmndi:BPMNLabel />

</bpmndi:BPMNEdge>

<bpmndi:BPMNShape bpmnElement="FLOWNODE_1" id="BPMNDI_FLOWNODE_1">

<dc:Bounds height="131" width="591" x="335" y="157" />

<bpmndi:BPMNLabel />

</bpmndi:BPMNShape>

<bpmndi:BPMNShape bpmnElement="FLOWNODE_2" id="BPMNDI_FLOWNODE_2">

<dc:Bounds height="32" width="32" x="391" y="207" />

<bpmndi:BPMNLabel />

</bpmndi:BPMNShape>

<bpmndi:BPMNShape bpmnElement="FLOWNODE_3" id="BPMNDI_FLOWNODE_3">

<dc:Bounds height="59" width="96" x="516" y="193" />

<bpmndi:BPMNLabel />

</bpmndi:BPMNShape>

<bpmndi:BPMNShape bpmnElement="FLOWNODE_4" id="BPMNDI_FLOWNODE_4">

<dc:Bounds height="30" width="30" x="707" y="208" />

<bpmndi:BPMNLabel />

</bpmndi:BPMNShape>

</bpmndi:BPMNPlane>

</bpmndi:BPMNDiagram>

</semantic:definitions>

======================================

BPMN file with MessageEventDefinition, regognized correctly as MessageStartEvent:

<?xml version="1.0" encoding="UTF-8"?>

<semantic:messageEventDefinition id="MESSAGE_EVENT_DEF_1" messageRef="MESSAGE_1" />

<semantic:message id="MESSAGE_1" />

<semantic:process id="PROCESS_1" isExecutable="true" name="Simple BPMN Process Diagram">

<semantic:laneSet id="LANESET_1">

<semantic:lane id="FLOWNODE_1" name="SalesSupport">

<semantic:flowNodeRef>FLOWNODE_2</semantic:flowNodeRef>

<semantic:flowNodeRef>FLOWNODE_3</semantic:flowNodeRef>

<semantic:flowNodeRef>FLOWNODE_4</semantic:flowNodeRef>

</semantic:lane>

</semantic:laneSet>

<semantic:startEvent id="FLOWNODE_2" name="RequestForOfferReceived">

<semantic:outgoing>FLOW_1</semantic:outgoing>

<semantic:messageEventDefinition id="MESSAGE_EVENT_DEF_1" messageRef="MESSAGE_1"/>

</semantic:startEvent>

<semantic:task id="FLOWNODE_3" name="ProcessRequest">

<semantic:incoming>FLOW_1</semantic:incoming>

<semantic:outgoing>FLOW_2</semantic:outgoing>

</semantic:task>

<semantic:endEvent id="FLOWNODE_4" name="RequestProcessed">

<semantic:incoming>FLOW_2</semantic:incoming>

</semantic:endEvent>

<semantic:sequenceFlow id="FLOW_1" sourceRef="FLOWNODE_2" targetRef="FLOWNODE_3" />

<semantic:sequenceFlow id="FLOW_2" sourceRef="FLOWNODE_3" targetRef="FLOWNODE_4" />

</semantic:process>

<bpmndi:BPMNDiagram id="DIAGRAM_1" name="Simple BPMN Process Diagram">

<bpmndi:BPMNPlane bpmnElement="PROCESS_1">

<bpmndi:BPMNEdge bpmnElement="FLOW_1" id="EDGE_1">

<di:waypoint x="423" y="223" />

<di:waypoint x="516" y="223" />

<bpmndi:BPMNLabel />

</bpmndi:BPMNEdge>

<bpmndi:BPMNEdge bpmnElement="FLOW_2" id="EDGE_2">

<di:waypoint x="613" y="223" />

<di:waypoint x="707" y="223" />

<bpmndi:BPMNLabel />

</bpmndi:BPMNEdge>

<bpmndi:BPMNShape bpmnElement="FLOWNODE_1" id="BPMNDI_FLOWNODE_1">

<dc:Bounds height="131" width="591" x="335" y="157" />

<bpmndi:BPMNLabel />

</bpmndi:BPMNShape>

<bpmndi:BPMNShape bpmnElement="FLOWNODE_2" id="BPMNDI_FLOWNODE_2">

<dc:Bounds height="32" width="32" x="391" y="207" />

<bpmndi:BPMNLabel />

</bpmndi:BPMNShape>

<bpmndi:BPMNShape bpmnElement="FLOWNODE_3" id="BPMNDI_FLOWNODE_3">

<dc:Bounds height="59" width="96" x="516" y="193" />

<bpmndi:BPMNLabel />

</bpmndi:BPMNShape>

<bpmndi:BPMNShape bpmnElement="FLOWNODE_4" id="BPMNDI_FLOWNODE_4">

<dc:Bounds height="30" width="30" x="707" y="208" />

<bpmndi:BPMNLabel />

</bpmndi:BPMNShape>

</bpmndi:BPMNPlane>

</bpmndi:BPMNDiagram>

</semantic:definitions>

Ingo Richtsmeier

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Dec 23, 2015, 4:35:58 AM12/23/15

to camunda BPM platform contributors, rob.va...@gmail.com

Hi Rob,

as I understand the BPMN-spec, only your second diagram is correct. I took this document http://www.omg.org/spec/BPMN/2.0/PDF and searched for "eventDefinitionRef" and "messageEventDefinition".

The message start event needs the messageEventDefinition.

Hope this helps,

Ingo

Rob van Dort

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Dec 23, 2015, 6:05:54 AM12/23/15

to Ingo Richtsmeier, camunda BPM platform contributors

But in the spec I read on page 6/7 for several events: "either ref or contained".

I see that our ARIS tooling output is following the "ref" style, and Camunda only accepts the "contained" style, as my examples show...

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