topic Unable to get a variable set in service task in Alfresco Archive

Unable to get a variable set in service task

gouthr — Wed, 24 Sep 2014 00:47:31 GMT

I am new to Activiti and Java. I am trying to create a simple unit test to invoke a Java service task from Activiti engine. Below is a code snippeterviceTask.javaackage test;import org.activiti.engine.delegate.DelegateExecution;import org.activiti.engine.delegate.JavaDelegate;public class Servic

Re: Unable to get a variable set in service task

trademak — Wed, 24 Sep 2014 04:22:49 GMT

Hi Goutham,

It's hard to say without seeing your process definition, but I'm expecting that the process instance has finished after executing the start process instance method. So you would have to use the HistoryService to retrieve the variable value instead of using the RuntimeService.

Best regards,

Re: Unable to get a variable set in service task

gouthr — Wed, 24 Sep 2014 18:51:33 GMT

Thanks for the response Tijs! Below is the process definition. Please let me know if this helps.

<?xml version="1.0" encoding="UTF-8"?>
<definitions xmlns="http://www.omg.org/spec/BPMN/20100524/MODEL" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:activiti="http://activiti.org/bpmn" xmlns:bpmndi="http://www.omg.org/spec/BPMN/20100524/DI" xmlnsmgdc="http://www.omg.org/spec/DD/20100524/DC" xmlnsmgdi="http://www.omg.org/spec/DD/20100524/DI" typeLanguage="http://www.w3.org/2001/XMLSchema" expressionLanguage="http://www.w3.org/1999/XPath" targetNamespace="http://www.activiti.org/test">
<process id="leaveProcess" name="My process" isExecutable="true">
    <startEvent id="startevent1" name="Start">
      <extensionElements>
        <activiti:formProperty id="Empname" name="Empname" type="string"></activiti:formProperty>
      </extensionElements>
    </startEvent>
    <serviceTask id="servicetask1" name="Service Task" activiti:class="test.Servicetask"></serviceTask>
    <sequenceFlow id="flow1" sourceRef="startevent1" targetRef="servicetask1"></sequenceFlow>
    <endEvent id="endevent1" name="End"></endEvent>
    <sequenceFlow id="flow2" sourceRef="servicetask1" targetRef="endevent1"></sequenceFlow>
</process>
<bpmndi:BPMNDiagram id="BPMNDiagram_leaveProcess">
    <bpmndi:BPMNPlane bpmnElement="leaveProcess" id="BPMNPlane_leaveProcess">
      <bpmndi:BPMNShape bpmnElement="startevent1" id="BPMNShape_startevent1">
        <omgdc:Bounds height="35.0" width="35.0" x="220.0" y="280.0"></omgdc:Bounds>
      </bpmndi:BPMNShape>
      <bpmndi:BPMNShape bpmnElement="servicetask1" id="BPMNShape_servicetask1">
        <omgdc:Bounds height="55.0" width="105.0" x="300.0" y="270.0"></omgdc:Bounds>
      </bpmndi:BPMNShape>
      <bpmndi:BPMNShape bpmnElement="endevent1" id="BPMNShape_endevent1">
        <omgdc:Bounds height="35.0" width="35.0" x="450.0" y="280.0"></omgdc:Bounds>
      </bpmndi:BPMNShape>
      <bpmndi:BPMNEdge bpmnElement="flow1" id="BPMNEdge_flow1">
        <omgdi:waypoint x="255.0" y="297.0"></omgdi:waypoint>
        <omgdi:waypoint x="300.0" y="297.0"></omgdi:waypoint>
      </bpmndi:BPMNEdge>
      <bpmndi:BPMNEdge bpmnElement="flow2" id="BPMNEdge_flow2">
        <omgdi:waypoint x="405.0" y="297.0"></omgdi:waypoint>
        <omgdi:waypoint x="450.0" y="297.0"></omgdi:waypoint>
      </bpmndi:BPMNEdge>
    </bpmndi:BPMNPlane>
</bpmndi:BPMNDiagram>
</definitions>

Re: Unable to get a variable set in service task

gouthr — Wed, 24 Sep 2014 18:53:14 GMT

<?xml version="1.0" encoding="UTF-8"?>
<definitions xmlns="http://www.omg.org/spec/BPMN/20100524/MODEL" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:activiti="http://activiti.org/bpmn" xmlns:bpmndi="http://www.omg.org/spec/BPMN/20100524/DI" xmlnsmgdc="http://www.omg.org/spec/DD/20100524/DC" xmlnsmgdi="http://www.omg.org/spec/DD/20100524/DI" typeLanguage="http://www.w3.org/2001/XMLSchema" expressionLanguage="http://www.w3.org/1999/XPath" targetNamespace="http://www.activiti.org/test">
<process id="leaveProcess" name="My process" isExecutable="true">
    <startEvent id="startevent1" name="Start">
      <extensionElements>
        <activiti:formProperty id="Empname" name="Empname" type="string"></activiti:formProperty>
      </extensionElements>
    </startEvent>
    <serviceTask id="servicetask1" name="Service Task" activiti:class="test.Servicetask"></serviceTask>
    <sequenceFlow id="flow1" sourceRef="startevent1" targetRef="servicetask1"></sequenceFlow>
    <endEvent id="endevent1" name="End"></endEvent>
    <sequenceFlow id="flow2" sourceRef="servicetask1" targetRef="endevent1"></sequenceFlow>
</process>
<bpmndi:BPMNDiagram id="BPMNDiagram_leaveProcess">
    <bpmndi:BPMNPlane bpmnElement="leaveProcess" id="BPMNPlane_leaveProcess">
      <bpmndi:BPMNShape bpmnElement="startevent1" id="BPMNShape_startevent1">
        <omgdc:Bounds height="35.0" width="35.0" x="220.0" y="280.0"></omgdc:Bounds>
      </bpmndi:BPMNShape>
      <bpmndi:BPMNShape bpmnElement="servicetask1" id="BPMNShape_servicetask1">
        <omgdc:Bounds height="55.0" width="105.0" x="300.0" y="270.0"></omgdc:Bounds>
      </bpmndi:BPMNShape>
      <bpmndi:BPMNShape bpmnElement="endevent1" id="BPMNShape_endevent1">
        <omgdc:Bounds height="35.0" width="35.0" x="450.0" y="280.0"></omgdc:Bounds>
      </bpmndi:BPMNShape>
      <bpmndi:BPMNEdge bpmnElement="flow1" id="BPMNEdge_flow1">
        <omgdi:waypoint x="255.0" y="297.0"></omgdi:waypoint>
        <omgdi:waypoint x="300.0" y="297.0"></omgdi:waypoint>
      </bpmndi:BPMNEdge>
      <bpmndi:BPMNEdge bpmnElement="flow2" id="BPMNEdge_flow2">
        <omgdi:waypoint x="405.0" y="297.0"></omgdi:waypoint>
        <omgdi:waypoint x="450.0" y="297.0"></omgdi:waypoint>
      </bpmndi:BPMNEdge>
    </bpmndi:BPMNPlane>
</bpmndi:BPMNDiagram>
</definitions>

Re: Unable to get a variable set in service task

gouthr — Wed, 24 Sep 2014 19:46:49 GMT

Thanks Tijs! You were right. The process instance had finished after executing the start process instance method. I will look into the HistoryService.