burnettk
commented
7 months ago here's a working example of data inputs and data outputs on tasks, slightly tweaked from one of elizabeth's test cases:
<?xml version="1.0" encoding="UTF-8"?>
<bpmn:definitions xmlns:bpmn="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" xmlns:modeler="http://camunda.org/schema/modeler/1.0" id="Definitions_1bprarj" targetNamespace="http://bpmn.io/schema/bpmn" exporter="Camunda Modeler" exporterVersion="4.11.1" modeler:executionPlatform="Camunda Platform" modeler:executionPlatformVersion="7.15.0">
<bpmn:process id="main" isExecutable="true">
<bpmn:startEvent id="StartEvent_1">
<bpmn:outgoing>Flow_0zbeoq1</bpmn:outgoing>
</bpmn:startEvent>
<bpmn:sequenceFlow id="Flow_0zbeoq1" sourceRef="StartEvent_1" targetRef="set_data" />
<bpmn:scriptTask id="set_data" name="Set Data">
<bpmn:incoming>Flow_0zbeoq1</bpmn:incoming>
<bpmn:outgoing>Flow_16rr3p3</bpmn:outgoing>
<bpmn:script>in_1, in_2, unused = 1, "hello world", True
</bpmn:script>
</bpmn:scriptTask>
<bpmn:sequenceFlow id="Flow_16rr3p3" sourceRef="set_data" targetRef="any_task" />
<bpmn:endEvent id="Event_1nbxxx5">
<bpmn:incoming>Flow_1woo38x</bpmn:incoming>
</bpmn:endEvent>
<bpmn:sequenceFlow id="Flow_1woo38x" sourceRef="any_task" targetRef="Event_1nbxxx5" />
<bpmn:scriptTask id="any_task" name="Any Task">
<bpmn:incoming>Flow_16rr3p3</bpmn:incoming>
<bpmn:outgoing>Flow_1woo38x</bpmn:outgoing>
<bpmn:ioSpecification>
<bpmn:dataInput id="in_1" name="input 1" />
<bpmn:dataInput id="in_2" name="input 2" />
<bpmn:dataOutput id="out_1" name="output 1" />
<bpmn:dataOutput id="out_2" name="output 2" />
<bpmn:inputSet id="input_set" name="Inputs">
<bpmn:dataInputRefs>in_1</bpmn:dataInputRefs>
<bpmn:dataInputRefs>in_2</bpmn:dataInputRefs>
</bpmn:inputSet>
<bpmn:outputSet id="output_set" name="Outputs">
<bpmn:dataOutputRefs>out_1</bpmn:dataOutputRefs>
<bpmn:dataOutputRefs>out_2</bpmn:dataOutputRefs>
</bpmn:outputSet>
</bpmn:ioSpecification>
<bpmn:script>out_1 = in_1
out_2 = in_2
out_3 = "not in data output"</bpmn:script>
</bpmn:scriptTask>
</bpmn:process>
<bpmndi:BPMNDiagram id="BPMNDiagram_1">
<bpmndi:BPMNPlane id="BPMNPlane_1" bpmnElement="main">
<bpmndi:BPMNShape id="_BPMNShape_StartEvent_2" bpmnElement="StartEvent_1">
<dc:Bounds x="179" y="99" width="36" height="36" />
</bpmndi:BPMNShape>
<bpmndi:BPMNShape id="Activity_0w8jd8z_di" bpmnElement="set_data">
<dc:Bounds x="270" y="77" width="100" height="80" />
</bpmndi:BPMNShape>
<bpmndi:BPMNShape id="Event_1nbxxx5_di" bpmnElement="Event_1nbxxx5">
<dc:Bounds x="592" y="99" width="36" height="36" />
</bpmndi:BPMNShape>
<bpmndi:BPMNShape id="Activity_01brwnm_di" bpmnElement="any_task">
<dc:Bounds x="430" y="77" width="100" height="80" />
</bpmndi:BPMNShape>
<bpmndi:BPMNEdge id="Flow_0zbeoq1_di" bpmnElement="Flow_0zbeoq1">
<di:waypoint x="215" y="117" />
<di:waypoint x="270" y="117" />
</bpmndi:BPMNEdge>
<bpmndi:BPMNEdge id="Flow_16rr3p3_di" bpmnElement="Flow_16rr3p3">
<di:waypoint x="370" y="117" />
<di:waypoint x="430" y="117" />
</bpmndi:BPMNEdge>
<bpmndi:BPMNEdge id="Flow_1woo38x_di" bpmnElement="Flow_1woo38x">
<di:waypoint x="530" y="117" />
<di:waypoint x="592" y="117" />
</bpmndi:BPMNEdge>
</bpmndi:BPMNPlane>
</bpmndi:BPMNDiagram>
</bpmn:definitions>
Please see the attached BPMN - this uses the BPMN IOSpecification to control what data is imported into a Task and what is passed on to the next task. This is fully supported by the core library - but we don't have a way to specify it in the API. Please note that he default should be to accept and pass on all variables - only if specifically provided, should inputs and outputs be enforced.
outputs.bpmn.txt