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Compensation in Parallel Tasks

gokceng1

I couldn't understand compensation in parallel execution. You can see the here here and XML here:

<?xml version="1.0" encoding="UTF-8" standalone="yes"?>
<definitions xmlns="http://www.omg.org/spec/BPMN/20100524/MODEL" xmlns:activiti="http://activiti.org/bpmn" 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:tns="http://sourceforge.net/bpmn/definitions/_1354022728531" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:yaoqiang="http://bpmn.sourceforge.net" exporter="Yaoqiang BPMN Editor" exporterVersion="2.1.11" expressionLanguage="http://www.w3.org/1999/XPath" id="_1354022728531" name="" targetNamespace="http://sourceforge.net/bpmn/definitions/_1354022728531" typeLanguage="http://www.w3.org/2001/XMLSchema" xsi:schemaLocation="http://www.omg.org/spec/BPMN/20100524/MODEL http://bpmn.sourceforge.net/schemas/BPMN20.xsd">
  <process id="PROCESS_1" isClosed="false" isExecutable="true" processType="None">
    <startEvent id="_2" isInterrupting="true" name="Start Event" parallelMultiple="false">
      <outgoing>_4</outgoing>
    </startEvent>
    <scriptTask completionQuantity="1" id="_3" isForCompensation="false" name="Script Task1" scriptFormat="groovy" startQuantity="1">
      <incoming>_4</incoming>
      <outgoing>_36</outgoing>
      <script><![CDATA[out:println execution.getCurrentActivityName();]]></script>
    </scriptTask>
    <sequenceFlow id="_4" sourceRef="_2" targetRef="_3"/>
    <parallelGateway gatewayDirection="Unspecified" id="_5" name="Parallel Gateway">
      <incoming>_37</incoming>
      <outgoing>_8</outgoing>
      <outgoing>_10</outgoing>
    </parallelGateway>
    <scriptTask completionQuantity="1" id="_7" isForCompensation="false" name="Script Task2" scriptFormat="groovy" startQuantity="1">
      <incoming>_8</incoming>
      <outgoing>_12</outgoing>
      <script><![CDATA[out:println execution.getCurrentActivityName();]]></script>
    </scriptTask>
    <sequenceFlow id="_8" sourceRef="_5" targetRef="_7"/>
    <scriptTask completionQuantity="1" id="_9" isForCompensation="false" name="Script Task3" scriptFormat="groovy" startQuantity="1">
      <incoming>_10</incoming>
      <outgoing>_16</outgoing>
      <script><![CDATA[out:println execution.getCurrentActivityName();]]></script>
    </scriptTask>
    <sequenceFlow id="_10" sourceRef="_5" targetRef="_9"/>
    <intermediateThrowEvent id="_11" name="Intermediate Throw Event">
      <incoming>_12</incoming>
      <outgoing>_14</outgoing>
      <compensateEventDefinition id="_11_ED_1" waitForCompletion="true"/>
    </intermediateThrowEvent>
    <sequenceFlow id="_12" sourceRef="_7" targetRef="_11"/>
    <parallelGateway gatewayDirection="Unspecified" id="_13" name="Parallel Gateway">
      <incoming>_14</incoming>
      <incoming>_17</incoming>
      <outgoing>_19</outgoing>
    </parallelGateway>
    <sequenceFlow id="_14" sourceRef="_11" targetRef="_13"/>
    <intermediateThrowEvent id="_15" name="Intermediate Throw Event">
      <incoming>_16</incoming>
      <outgoing>_17</outgoing>
      <compensateEventDefinition id="_15_ED_1" waitForCompletion="true"/>
    </intermediateThrowEvent>
    <sequenceFlow id="_16" sourceRef="_9" targetRef="_15"/>
    <sequenceFlow id="_17" sourceRef="_15" targetRef="_13"/>
    <scriptTask completionQuantity="1" id="_18" isForCompensation="false" name="Script Task4" scriptFormat="groovy" startQuantity="1">
      <incoming>_19</incoming>
      <outgoing>_21</outgoing>
      <script><![CDATA[out:println execution.getCurrentActivityName();]]></script>
    </scriptTask>
    <sequenceFlow id="_19" sourceRef="_13" targetRef="_18"/>
    <intermediateThrowEvent id="_20" name="Intermediate Throw Event">
      <incoming>_21</incoming>
      <outgoing>_23</outgoing>
      <compensateEventDefinition id="_20_ED_1" waitForCompletion="true"/>
    </intermediateThrowEvent>
    <sequenceFlow id="_21" sourceRef="_18" targetRef="_20"/>
    <endEvent id="_22" name="End Event">
      <incoming>_23</incoming>
    </endEvent>
    <sequenceFlow id="_23" sourceRef="_20" targetRef="_22"/>
    <boundaryEvent attachedToRef="_3" cancelActivity="true" id="_24" name="Boundary Event" parallelMultiple="false">
      <compensateEventDefinition id="_24_ED_1" waitForCompletion="true"/>
    </boundaryEvent>
    <boundaryEvent attachedToRef="_7" cancelActivity="true" id="_25" name="Boundary Event" parallelMultiple="false">
      <compensateEventDefinition id="_25_ED_1" waitForCompletion="true"/>
    </boundaryEvent>
    <boundaryEvent attachedToRef="_9" cancelActivity="true" id="_26" name="Boundary Event" parallelMultiple="false">
      <compensateEventDefinition id="_26_ED_1" waitForCompletion="true"/>
    </boundaryEvent>
    <boundaryEvent attachedToRef="_18" cancelActivity="true" id="_27" name="Boundary Event" parallelMultiple="false">
      <compensateEventDefinition id="_27_ED_1" waitForCompletion="true"/>
    </boundaryEvent>
    <scriptTask completionQuantity="1" id="_28" isForCompensation="true" name="Compensation Script Task2" scriptFormat="groovy" startQuantity="1">
      <script><![CDATA[out:println execution.getCurrentActivityName();]]></script>
    </scriptTask>
    <scriptTask completionQuantity="1" id="_30" isForCompensation="true" name="Compensation Script Task3" scriptFormat="groovy" startQuantity="1">
      <script><![CDATA[out:println execution.getCurrentActivityName();]]></script>
    </scriptTask>
    <scriptTask completionQuantity="1" id="_32" isForCompensation="true" name="Compensation Script Task4" scriptFormat="groovy" startQuantity="1">
      <script><![CDATA[out:println execution.getCurrentActivityName();]]></script>
    </scriptTask>
    <scriptTask completionQuantity="1" id="_34" isForCompensation="true" name="Compensation Script Task1" scriptFormat="groovy" startQuantity="1">
      <script><![CDATA[out:println execution.getCurrentActivityName();]]></script>
    </scriptTask>
    <intermediateThrowEvent id="_6" name="Intermediate Throw Event">
      <incoming>_36</incoming>
      <outgoing>_37</outgoing>
      <compensateEventDefinition id="_6_ED_1" waitForCompletion="true"/>
    </intermediateThrowEvent>
    <sequenceFlow id="_36" sourceRef="_3" targetRef="_6"/>
    <sequenceFlow id="_37" sourceRef="_6" targetRef="_5"/>
    <association associationDirection="One" id="_29" sourceRef="_25" targetRef="_28"/>
    <association associationDirection="One" id="_31" sourceRef="_26" targetRef="_30"/>
    <association associationDirection="One" id="_33" sourceRef="_27" targetRef="_32"/>
    <association associationDirection="One" id="_35" sourceRef="_24" targetRef="_34"/>
  </process>
  <bpmndi:BPMNDiagram documentation="background=#FFFFFF;count=1;horizontalcount=1;orientation=0;width=597.6;height=842.4;imageableWidth=587.6;imageableHeight=832.4;imageableX=5.0;imageableY=5.0" id="Yaoqiang_Diagram-_1" name="New Diagram">
<!– Excluded –>
  </bpmndi:BPMNDiagram>
</definitions>
‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍

Execution order of this process:

Script Task1
Compensation Script Task1
Script Task2
Script Task3
Script Task4
Compensation Script Task4
Compensation Script Task3
Compensation Script Task2‍‍‍‍‍‍‍‍

What I didn't understand is why Intermediate Compensation Throw Events after Script 2 and Script 3 didn't cause trigger Compensation Script Task3, Compensation Script Task2?

In short, why does process wait for compensation event which is after Script Task 4?

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Comments

jbarrez

The Activiti engine executes the steps not in parallel. Ie, it executes what it encounters first, also the order of sequence flow in the XML is respected. That is what you are seeing here.

gokceng1

I have no problem with that approach. What I couldn't understand is throwing a compensation event in a parallel line doesn't trigger anything. I expect it to trigger the same-line task's compensation listener at least.

For example throwing compensation event after Script Task2 or Script Task3 doesn't trigger Compensation Script Task3 or Compensation Script Task2 whatever the call order is. Why?

jbarrez

Why would they be catched by those compensation handlers? The compensation catch is on the scope of the script task. The script task is done when you arrive t the throw event step.

In the other case of execution (ie second throw should enable first catch), my reasoning of above matters: either the script task is already done or it is not yet reached.

If you want this to work, you need to introduce a bigger scope, by using eg. an embedded subprocess.

gokceng1

I'm not sure that I understood you correctly especially about scopes.
You can see my edits on image export of original process: image

1st and 4th items works same as what I expect on the other hand 2 and 3 doesn't work in that way(not working at all). And you say this behaviour is normal. I see 4 identical groups of items in process image.

The compensation catch is on the scope of the script task. The script task is done when you arrive t the throw event step.

What is the difference between 2/3 and 1/4? Script 1 or 4 is also done when I throw compensation event, but it triggers the listener on same task.

May be I really misunderstood or totally didn't understand your point. Could you explain it again?

jbarrez

Okay, I re-read everything and you are correct, the behaviour is not correct. Sorry for the confusion caused by me.

However, actually the reason why the first and the fourth one works is actually more by accident than anything else.
When a compensate intermediate event is thrown like here, it will query the database.
However, since you only have automatic steps here, the data is not yet in the database, and hence the query returns nothing. The reason it works for the first and the last one, is because the event subscriptions are cached on the execution. The reason it fails twice, is because the parallel executions are new executions which don't have the cached versions.

I see two potential solutions:
- When doing a query, the engine should always look in the 'pending inserts'. This would be the correct solution, but I don't know the damages that might to do other existing code.
- For throwing events, we could check the execution tree upwards to find a cached version

I've sent an email to Daniel asking him to comment here, who wrote this functionality to see what his opinion is.

jbarrez

On the other hand, this line of code

ExecutionEntity scopeExecution = ScopeUtil.findScopeExecutionForScope((ExecutionEntity)execution, (ActivityImpl)execution.getActivity());

Should return the correct execution … maybe there is a bug in there?

gokceng1

Thank you so much for quite clear explanation. We'll wait for Daniel's answer for this situation.

meyerd

Hi gokceng,

this should definately work as you describe. If it doesn't, it's a bug. Could you maybe provide a failing activiti unit testcase for your process?

jbarrez

@Dan: you can just copy and paste his process and run it (I would suggest using my unit test template ;-).

gokceng1

I've just changed id of process:

<?xml version="1.0" encoding="UTF-8" standalone="yes"?><br><definitions xmlns="<a href="http://www.omg.org/spec/BPMN/20100524/MODEL" rel="nofollow noopener noreferrer">http://www.omg.org/spec/BPMN/20100524/MODEL</a>" xmlns:activiti="<a href="http://activiti.org/bpmn" rel="nofollow noopener noreferrer">http://activiti.org/bpmn</a>" xmlns:bpmndi="<a href="http://www.omg.org/spec/BPMN/20100524/DI" rel="nofollow noopener noreferrer">http://www.omg.org/spec/BPMN/20100524/DI</a>" xmlns:dc="<a href="http://www.omg.org/spec/DD/20100524/DC" rel="nofollow noopener noreferrer">http://www.omg.org/spec/DD/20100524/DC</a>" xmlns:di="<a href="http://www.omg.org/spec/DD/20100524/DI" rel="nofollow noopener noreferrer">http://www.omg.org/spec/DD/20100524/DI</a>" xmlns:tns="<a href="http://sourceforge.net/bpmn/definitions/_1354022728531" rel="nofollow noopener noreferrer">http://sourceforge.net/bpmn/definitions/_1354022728531</a>" xmlns:xsd="<a href="http://www.w3.org/2001/XMLSchema" rel="nofollow noopener noreferrer">http://www.w3.org/2001/XMLSchema</a>" xmlns:xsi="<a href="http://www.w3.org/2001/XMLSchema-instance" rel="nofollow noopener noreferrer">http://www.w3.org/2001/XMLSchema-instance</a>" xmlns:yaoqiang="<a href="http://bpmn.sourceforge.net" rel="nofollow noopener noreferrer">http://bpmn.sourceforge.net</a>" exporter="Yaoqiang BPMN Editor" exporterVersion="2.1.11" expressionLanguage="<a href="http://www.w3.org/1999/XPath" rel="nofollow noopener noreferrer">http://www.w3.org/1999/XPath</a>" id="_1354022728531" name="" targetNamespace="<a href="http://sourceforge.net/bpmn/definitions/_1354022728531" rel="nofollow noopener noreferrer">http://sourceforge.net/bpmn/definitions/_1354022728531</a>" typeLanguage="<a href="http://www.w3.org/2001/XMLSchema" rel="nofollow noopener noreferrer">http://www.w3.org/2001/XMLSchema</a>" xsi:schemaLocation="<a href="http://www.omg.org/spec/BPMN/20100524/MODEL" rel="nofollow noopener noreferrer">http://www.omg.org/spec/BPMN/20100524/MODEL</a> <a href="http://bpmn.sourceforge.net/schemas/BPMN20.xsd" rel="nofollow noopener noreferrer">http://bpmn.sourceforge.net/schemas/BPMN20.xsd</a>"><br>&nbsp; <process id="parallelCompensationProcess" isExecutable="true" name="parallelCompensationProcess" processType="None"><br>&nbsp;&nbsp;&nbsp; <startEvent id="_2" isInterrupting="true" name="Start Event" parallelMultiple="false"><br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; <outgoing>_4</outgoing><br>&nbsp;&nbsp;&nbsp; </startEvent><br>&nbsp;&nbsp;&nbsp; <scriptTask completionQuantity="1" id="_3" isForCompensation="false" name="Script Task1" scriptFormat="groovy" startQuantity="1"><br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; <incoming>_4</incoming><br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; <outgoing>_36</outgoing><br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; <script><![CDATA[out:smileytongue:rintln execution.getCurrentActivityName();]]></script><br>&nbsp;&nbsp;&nbsp; </scriptTask><br>&nbsp;&nbsp;&nbsp; <sequenceFlow id="_4" sourceRef="_2" targetRef="_3"/><br>&nbsp;&nbsp;&nbsp; <parallelGateway gatewayDirection="Unspecified" id="_5" name="Parallel Gateway"><br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; <incoming>_37</incoming><br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; <outgoing>_8</outgoing><br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; <outgoing>_10</outgoing><br>&nbsp;&nbsp;&nbsp; </parallelGateway><br>&nbsp;&nbsp;&nbsp; <scriptTask completionQuantity="1" id="_7" isForCompensation="false" name="Script Task2" scriptFormat="groovy" startQuantity="1"><br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; <incoming>_8</incoming><br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; <outgoing>_12</outgoing><br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; <script><![CDATA[out:smileytongue:rintln execution.getCurrentActivityName();]]></script><br>&nbsp;&nbsp;&nbsp; </scriptTask><br>&nbsp;&nbsp;&nbsp; <sequenceFlow id="_8" sourceRef="_5" targetRef="_7"/><br>&nbsp;&nbsp;&nbsp; <scriptTask completionQuantity="1" id="_9" isForCompensation="false" name="Script Task3" scriptFormat="groovy" startQuantity="1"><br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; <incoming>_10</incoming><br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; <outgoing>_16</outgoing><br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; <script><![CDATA[out:smileytongue:rintln execution.getCurrentActivityName();]]></script><br>&nbsp;&nbsp;&nbsp; </scriptTask><br>&nbsp;&nbsp;&nbsp; <sequenceFlow id="_10" sourceRef="_5" targetRef="_9"/><br>&nbsp;&nbsp;&nbsp; <intermediateThrowEvent id="_11" name="Intermediate Throw Event"><br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; <incoming>_12</incoming><br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; <outgoing>_14</outgoing><br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; <compensateEventDefinition id="_11_ED_1" waitForCompletion="false"/><br>&nbsp;&nbsp;&nbsp; </intermediateThrowEvent><br>&nbsp;&nbsp;&nbsp; <parallelGateway gatewayDirection="Unspecified" id="_13" name="Parallel Gateway"><br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; <incoming>_14</incoming><br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; <incoming>_17</incoming><br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; <outgoing>_19</outgoing><br>&nbsp;&nbsp;&nbsp; </parallelGateway><br>&nbsp;&nbsp;&nbsp; <sequenceFlow id="_14" sourceRef="_11" targetRef="_13"/><br>&nbsp;&nbsp;&nbsp; <intermediateThrowEvent id="_15" name="Intermediate Throw Event"><br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; <incoming>_16</incoming><br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; <outgoing>_17</outgoing><br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; <compensateEventDefinition id="_15_ED_1" waitForCompletion="false"/><br>&nbsp;&nbsp;&nbsp; </intermediateThrowEvent><br>&nbsp;&nbsp;&nbsp; <sequenceFlow id="_16" sourceRef="_9" targetRef="_15"/><br>&nbsp;&nbsp;&nbsp; <sequenceFlow id="_17" sourceRef="_15" targetRef="_13"/><br>&nbsp;&nbsp;&nbsp; <scriptTask completionQuantity="1" id="_18" isForCompensation="false" name="Script Task4" scriptFormat="groovy" startQuantity="1"><br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; <incoming>_19</incoming><br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; <outgoing>_21</outgoing><br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; <script><![CDATA[out:smileytongue:rintln execution.getCurrentActivityName();]]></script><br>&nbsp;&nbsp;&nbsp; </scriptTask><br>&nbsp;&nbsp;&nbsp; <sequenceFlow id="_19" sourceRef="_13" targetRef="_18"/><br>&nbsp;&nbsp;&nbsp; <intermediateThrowEvent id="_20" name="Intermediate Throw Event"><br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; <incoming>_21</incoming><br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; <outgoing>_23</outgoing><br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; <compensateEventDefinition id="_20_ED_1" waitForCompletion="true"/><br>&nbsp;&nbsp;&nbsp; </intermediateThrowEvent><br>&nbsp;&nbsp;&nbsp; <sequenceFlow id="_21" sourceRef="_18" targetRef="_20"/><br>&nbsp;&nbsp;&nbsp; <endEvent id="_22" name="End Event"><br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; <incoming>_23</incoming><br>&nbsp;&nbsp;&nbsp; </endEvent><br>&nbsp;&nbsp;&nbsp; <sequenceFlow id="_23" sourceRef="_20" targetRef="_22"/><br>&nbsp;&nbsp;&nbsp; <boundaryEvent attachedToRef="_3" cancelActivity="true" id="_24" name="Boundary Event" parallelMultiple="false"><br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; <compensateEventDefinition id="_24_ED_1" waitForCompletion="true"/><br>&nbsp;&nbsp;&nbsp; </boundaryEvent><br>&nbsp;&nbsp;&nbsp; <boundaryEvent attachedToRef="_7" cancelActivity="true" id="_25" name="Boundary Event" parallelMultiple="false"><br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; <compensateEventDefinition id="_25_ED_1" waitForCompletion="true"/><br>&nbsp;&nbsp;&nbsp; </boundaryEvent><br>&nbsp;&nbsp;&nbsp; <boundaryEvent attachedToRef="_9" cancelActivity="true" id="_26" name="Boundary Event" parallelMultiple="false"><br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; <compensateEventDefinition id="_26_ED_1" waitForCompletion="true"/><br>&nbsp;&nbsp;&nbsp; </boundaryEvent><br>&nbsp;&nbsp;&nbsp; <boundaryEvent attachedToRef="_18" cancelActivity="true" id="_27" name="Boundary Event" parallelMultiple="false"><br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; <compensateEventDefinition id="_27_ED_1" waitForCompletion="true"/><br>&nbsp;&nbsp;&nbsp; </boundaryEvent><br>&nbsp;&nbsp;&nbsp; <scriptTask completionQuantity="1" id="_28" isForCompensation="true" name="Compensation Script Task2" scriptFormat="groovy" startQuantity="1"><br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; <script><![CDATA[out:smileytongue:rintln execution.getCurrentActivityName();]]></script><br>&nbsp;&nbsp;&nbsp; </scriptTask><br>&nbsp;&nbsp;&nbsp; <scriptTask completionQuantity="1" id="_30" isForCompensation="true" name="Compensation Script Task3" scriptFormat="groovy" startQuantity="1"><br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; <script><![CDATA[out:smileytongue:rintln execution.getCurrentActivityName();]]></script><br>&nbsp;&nbsp;&nbsp; </scriptTask><br>&nbsp;&nbsp;&nbsp; <scriptTask completionQuantity="1" id="_32" isForCompensation="true" name="Compensation Script Task4" scriptFormat="groovy" startQuantity="1"><br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; <script><![CDATA[out:smileytongue:rintln execution.getCurrentActivityName();]]></script><br>&nbsp;&nbsp;&nbsp; </scriptTask><br>&nbsp;&nbsp;&nbsp; <scriptTask completionQuantity="1" id="_34" isForCompensation="true" name="Compensation Script Task1" scriptFormat="groovy" startQuantity="1"><br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; <script><![CDATA[out:smileytongue:rintln execution.getCurrentActivityName();]]></script><br>&nbsp;&nbsp;&nbsp; </scriptTask><br>&nbsp;&nbsp;&nbsp; <sequenceFlow id="_12" sourceRef="_7" targetRef="_11"/><br>&nbsp;&nbsp;&nbsp; <sequenceFlow id="_37" sourceRef="_6" targetRef="_5"/><br>&nbsp;&nbsp;&nbsp; <sequenceFlow id="_36" sourceRef="_3" targetRef="_6"/><br>&nbsp;&nbsp;&nbsp; <intermediateThrowEvent id="_6" name="Intermediate Throw Event"><br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; <incoming>_36</incoming><br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; <outgoing>_37</outgoing><br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; <compensateEventDefinition id="_6_ED_1" waitForCompletion="true"/><br>&nbsp;&nbsp;&nbsp; </intermediateThrowEvent><br>&nbsp;&nbsp;&nbsp; <association associationDirection="One" id="_29" sourceRef="_25" targetRef="_28"/><br>&nbsp;&nbsp;&nbsp; <association associationDirection="One" id="_31" sourceRef="_26" targetRef="_30"/><br>&nbsp;&nbsp;&nbsp; <association associationDirection="One" id="_33" sourceRef="_27" targetRef="_32"/><br>&nbsp;&nbsp;&nbsp; <association associationDirection="One" id="_35" sourceRef="_24" targetRef="_34"/><br>&nbsp; </process><br>&nbsp; <bpmndi:BPMNDiagram documentation="background=#FFFFFF;count=1;horizontalcount=1;orientation=0;width=597.6;height=842.4;imageableWidth=587.6;imageableHeight=832.4;imageableX=5.0;imageableY=5.0" id="Yaoqiang_Diagram-_1" name="New Diagram"><br>&nbsp;&nbsp;&nbsp; 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<bpmndi:BPMNEdge bpmnElement="_35" id="Yaoqiang-_35" sourceElement="_24" targetElement="_34"><br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; <di:waypoint x="114.18253968253975" y="317.47105554527735"/><br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; <di:waypoint x="114.18253968253975" y="359.1573641298292"/><br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; <bpmndi:BPMNLabel><br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; <dc:Bounds height="0.0" width="0.0" x="0.0" y="0.0"/><br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; </bpmndi:BPMNLabel><br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; </bpmndi:BPMNEdge><br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; <bpmndi:BPMNEdge bpmnElement="_33" id="Yaoqiang-_33" sourceElement="_27" targetElement="_32"><br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; <di:waypoint x="774.4999999999999" y="316.37478221802894"/><br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; <di:waypoint x="774.4999999999999" y="337.2186314687123"/><br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; <bpmndi:BPMNLabel><br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; <dc:Bounds height="0.0" width="0.0" x="0.0" y="0.0"/><br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; </bpmndi:BPMNLabel><br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; </bpmndi:BPMNEdge><br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; <bpmndi:BPMNEdge bpmnElement="_31" id="Yaoqiang-_31" sourceElement="_26" targetElement="_30"><br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; <di:waypoint x="493.43650793650806" y="449.10616610498835"/><br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; <di:waypoint x="493.43650793650806" y="492.98363336264197"/><br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; <bpmndi:BPMNLabel><br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; <dc:Bounds height="0.0" width="0.0" x="0.0" y="0.0"/><br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; </bpmndi:BPMNLabel><br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; </bpmndi:BPMNEdge><br>&nbsp;&nbsp;&nbsp; </bpmndi:BPMNPlane><br>&nbsp; </bpmndi:BPMNDiagram><br></definitions><br>

And the test code(not exactly a test, just demonstrating the flow):

package org.activiti.designer.test.comp;<br><br>import static org.junit.Assert.assertNotNull;<br><br>import org.activiti.engine.RepositoryService;<br>import org.activiti.engine.RuntimeService;<br>import org.activiti.engine.repository.ProcessDefinition;<br>import org.activiti.engine.runtime.ProcessInstance;<br>import org.activiti.engine.test.ActivitiRule;<br>import org.activiti.engine.test.Deployment;<br>import org.apache.log4j.Logger;<br>import org.junit.Assert;<br>import org.junit.Rule;<br>import org.junit.Test;<br>import org.junit.runner.RunWith;<br>import org.springframework.beans.factory.annotation.Autowired;<br>import org.springframework.test.context.ContextConfiguration;<br>import org.springframework.test.context.junit4.SpringJUnit4ClassRunner;<br><br>@RunWith(SpringJUnit4ClassRunner.class)<br>@ContextConfiguration("classpath:activitiTestContext.xml")<br>public class ProcessParallel extends AbstractTest<br>{<br> Logger logger = Logger.getLogger(ProcessParallel.class);<br> @Autowired<br> private RuntimeService runtimeService;<br> @Autowired<br> private RepositoryService repositoryService;<br><br> @Autowired<br> @Rule<br> public ActivitiRule activitiRule;<br><br> @Test<br> @Deployment(resources = { "diagrams/Parallel.bpmn" })<br> public void startProcess() throws Exception<br> {<br>&nbsp; org.activiti.engine.repository.Deployment deployment = repositoryService.createDeploymentQuery()<br>&nbsp;&nbsp;&nbsp; .deploymentName(this.getClass().getSimpleName() + "." + Thread.currentThread().getStackTrace()[1].getMethodName())<br>&nbsp;&nbsp;&nbsp; .orderByDeploymenTime().asc().list().get(0);<br>&nbsp; ProcessDefinition processDefinition = repositoryService.createProcessDefinitionQuery().deploymentId(deployment.getId()).singleResult();<br>&nbsp; Assert.assertNotNull(processDefinition);<br>&nbsp; logger.info("Actual Execution Order:");<br>&nbsp; ProcessInstance processInstance = runtimeService.startProcessInstanceByKey("parallelCompensationProcess");<br>&nbsp; assertNotNull(processInstance);<br>&nbsp; System.out.println("id " + processInstance.getId() + " " + processInstance.getProcessDefinitionId());<br> }<br>}

Spring configuration file(activitiTestContext.xml):

<?xml version="1.0" encoding="UTF-8"?><br><beans xmlns="<a href="http://www.springframework.org/schema/beans" rel="nofollow noopener noreferrer">http://www.springframework.org/schema/beans</a>"<br> xmlns:xsi="<a href="http://www.w3.org/2001/XMLSchema-instance" rel="nofollow noopener noreferrer">http://www.w3.org/2001/XMLSchema-instance</a>" xmlns:tx="<a href="http://www.springframework.org/schema/tx" rel="nofollow noopener noreferrer">http://www.springframework.org/schema/tx</a>"<br> xsi:schemaLocation="<a href="http://www.springframework.org/schema/beans" rel="nofollow noopener noreferrer">http://www.springframework.org/schema/beans</a> <br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; <a href="http://www.springframework.org/schema/beans/spring-beans-3.0.xsd" rel="nofollow noopener noreferrer">http://www.springframework.org/schema/beans/spring-beans-3.0.xsd</a> <br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; <a href="http://www.springframework.org/schema/tx" rel="nofollow noopener noreferrer">http://www.springframework.org/schema/tx</a><br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; <a href="http://www.springframework.org/schema/tx/spring-tx-3.0.xsd" rel="nofollow noopener noreferrer">http://www.springframework.org/schema/tx/spring-tx-3.0.xsd</a>"><br><br> <bean id="dataSource"<br>&nbsp; class="org.springframework.jdbc.datasource.SimpleDriverDataSource"><br>&nbsp; <property name="driverClass" value="org.h2.Driver" /><br>&nbsp; <property name="url"<br>&nbsp;&nbsp; value="jdbc:h2:tcp://localhost/activiti;DB_CLOSE_DELAY=1000" /><br>&nbsp; <!&ndash; <property name="url" value="jdbc:h2:mem:activiti;DB_CLOSE_DELAY=1000" <br>&nbsp;&nbsp; /> &ndash;><br>&nbsp; <property name="username" value="sa" /><br>&nbsp; <property name="password" value="" /><br> </bean><br><br> <bean id="transactionManager"<br>&nbsp; class="org.springframework.jdbc.datasource.DataSourceTransactionManager"><br>&nbsp; <property name="dataSource" ref="dataSource" /><br> </bean><br><br> <bean id="processEngineConfiguration" class="org.activiti.spring.SpringProcessEngineConfiguration"><br>&nbsp; <property name="dataSource" ref="dataSource" /><br>&nbsp; <property name="transactionManager" ref="transactionManager" /><br>&nbsp; <property name="databaseSchemaUpdate" value="true" /><br>&nbsp; <property name="jobExecutorActivate" value="true" /><br>&nbsp; <property name="history" value="full" /><br>&nbsp; <property name="customPostDeployers"><br>&nbsp;&nbsp; <list><br>&nbsp;&nbsp;&nbsp; <bean class="org.activiti.engine.impl.rules.RulesDeployer" /><br>&nbsp;&nbsp; </list><br>&nbsp; </property><br> </bean><br><br> <bean id="processEngine" class="org.activiti.spring.ProcessEngineFactoryBean"><br>&nbsp; <property name="processEngineConfiguration" ref="processEngineConfiguration" /><br> </bean><br><br> <bean id="activitiRule" class="org.activiti.engine.test.ActivitiRule"><br>&nbsp; <property name="processEngine" ref="processEngine" /><br> </bean><br><br> <bean id="historyService" factory-bean="processEngine"<br>&nbsp; factory-method="getHistoryService" /><br> <bean id="formService" factory-bean="processEngine"<br>&nbsp; factory-method="getFormService" /><br> <bean id="identityService" factory-bean="processEngine"<br>&nbsp; factory-method="getIdentityService" /><br> <bean id="managementService" factory-bean="processEngine"<br>&nbsp; factory-method="getManagementService" /><br> <bean id="repositoryService" factory-bean="processEngine"<br>&nbsp; factory-method="getRepositoryService" /><br> <bean id="runtimeService" factory-bean="processEngine"<br>&nbsp; factory-method="getRuntimeService" /><br> <bean id="taskService" factory-bean="processEngine"<br>&nbsp; factory-method="getTaskService" /><br></beans><br>

It gives:

1832 [main] INFO&nbsp; org.activiti.designer.test.comp.ProcessParallel&nbsp; - Actual Execution Order:<br>Script Task1<br>Compensation Script Task1<br>Script Task2<br>Script Task3<br>Script Task4<br>Compensation Script Task4<br>Compensation Script Task3<br>Compensation Script Task2

But I do not expect Compensation Script Task3 and Compensation Script Task2 to come after Compensation Script Task4. They should be called before that.

gokceng1

Were you able to look at test projects?

jbarrez

Yeah, it is indeed a bug: http://jira.codehaus.org/browse/ACT-1513