topic Re: Multiple End or Start events in Alfresco Archive

Multiple End or Start events

yangyang_qian — Fri, 24 Dec 2010 00:22:14 GMT

Can the Activiti engine handle multiple end events? Say I have a process like the following …Start –> task1 –> XOR –> End1…………………….|__> End2where End1 vs End2 has some sort of business meaning (i.e. rejected vs approved)If I were to execute this process, would the engine differentiate

Re: Multiple End or Start events

frederikherema1 — Fri, 24 Dec 2010 07:03:38 GMT

Hi,

Activiti can indeed handle multiple end events. If you want to know what end-event has been chosen by your process-instance, you should have a look at the HistoricProcessInstance (http://activiti.org/userguide/index.html#history)


HistoricProcessInstance hip = historyService.createHistoricProcessInstanceQuery().processInstanceId("123").singleResult();
String endActivitiId = hip.getEndActivityId();

About the designer-file, looks like the 2 end events are in there:

 <bpmn2:EndEvent id="endevent1" name="End1" incoming="flow35"/>
  <bpmn2:EndEvent id="endevent2" name="End2" incoming="flow36"/>

Once you export the process to a bpmn 2.0 in the designer, you can use it in activiti.

Re: Multiple End or Start events

yangyang_qian — Fri, 24 Dec 2010 15:08:47 GMT

Oh cool, I'll definitely try out the HistoricProcessInstance class.

Sorry if I was a bit unclear about the code dump … yes the end events are in this dump from the foo.activiti file.

But I've found that when I save it in my Activiti Designer and it is transformed (on save) into the foo.activiti.bpmn20.xml or exported (the Export to BPMN 2.0 XML right-click option) into the foo.bpmn20.xml , all but first end event nodes are missing. Trying to run unit tests on the foo.activiti.bpmn20.xml version of this process just generates an error right off the bat …


org.activiti.engine.ActivitiException: cvc-id.1: There is no ID/IDREF binding for IDREF 'endevent2'. | multiEndTests/multiends.activiti.bpmn20.xml | line 1 | column 1268
Invalid destination 'endevent2' of sequence flow 'flow36' | multiEndTests/multiends.activiti.bpmn20.xml | line 1 | column 1086

 at org.activiti.engine.impl.util.xml.Parse.throwActivitiExceptionForErrors(Parse.java:186)
 at org.activiti.engine.impl.bpmn.parser.BpmnParse.execute(BpmnParse.java:225)
 at org.activiti.engine.impl.bpmn.deployer.BpmnDeployer.deploy(BpmnDeployer.java:63)
 at org.activiti.engine.impl.db.DbRepositorySession.deployNew(DbRepositorySession.java:63)
 at org.activiti.engine.impl.cmd.DeployCmd.execute(DeployCmd.java:52)
 at org.activiti.engine.impl.cmd.DeployCmd.execute(DeployCmd.java:30)
 at org.activiti.engine.impl.interceptor.CommandExecutorImpl.execute(CommandExecutorImpl.java:22)
 at org.activiti.engine.impl.interceptor.CommandContextInterceptor.execute(CommandContextInterceptor.java:37)
 at org.activiti.engine.impl.interceptor.LogInterceptor.execute(LogInterceptor.java:33)
 at org.activiti.engine.impl.RepositoryServiceImpl.deploy(RepositoryServiceImpl.java:43)
 at org.activiti.engine.impl.repository.DeploymentBuilderImpl.deploy(DeploymentBuilderImpl.java:103)
 at org.activiti.engine.impl.test.TestHelper.annotationDeploymentSetUp(TestHelper.java:93)
 at org.activiti.engine.impl.test.AbstractActivitiTestCase.runBare(AbstractActivitiTestCase.java:83)
 at junit.framework.TestResult$1.protect(TestResult.java:110)
 at junit.framework.TestResult.runProtected(TestResult.java:128)
 at junit.framework.TestResult.run(TestResult.java:113)
 at junit.framework.TestCase.run(TestCase.java:124)
 at junit.framework.TestSuite.runTest(TestSuite.java:232)
 at junit.framework.TestSuite.run(TestSuite.java:227)
 at org.junit.internal.runners.JUnit38ClassRunner.run(JUnit38ClassRunner.java:83)
 at org.eclipse.jdt.internal.junit4.runner.JUnit4TestReference.run(JUnit4TestReference.java:49)
 at org.eclipse.jdt.internal.junit.runner.TestExecution.run(TestExecution.java:38)
 at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:467)
 at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:683)
 at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java:390)
 at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main(RemoteTestRunner.java:197)

so strangely it looks like the sequence flows are there, but not the end events.

Just wanted to know if others are getting this issue, since I am not sure if it was just my installation of the Activiti Designer that is an issue or if it's a bug with Designer itself.

Re: Multiple End or Start events

trademak — Mon, 27 Dec 2010 10:10:41 GMT

Hi,

This is a bug in the Activiti Designer. Currently we only support one start and end event.
But that was mainly there for some first validation rules that were implemented, so there's no reason why we wouldn't allow multiple start and end events.
Can you create a JIRA issue for this?

Thanks,

Tijs Rademakers
Lead developer Activiti Designer

Re: Multiple End or Start events

yangyang_qian — Mon, 27 Dec 2010 21:55:01 GMT

I've submitted JIRA ACT-474 .

Btw, I've settled with a workaround of using multiple ServiceTask nodes that handle all of the custom endstate behavior, and all of the flows just go to the same endState. I only did this to make it easier to move between the Activiti Designer and functional XML …