topic Re: Get processDefinition tasks , start event, end event using Java, without creating a process instance in Alfresco Archive

Get processDefinition tasks , start event, end event using Java, without creating a process instance

mansi — Mon, 29 Feb 2016 10:48:03 GMT

Hi,My requirement is to get the details about deployed processDefinition, like Tasks in it, its StartEvent, EndEvent.But I want to have these without creating a process instance.Is there a way to achieve this?I have been looking into activiti user guide as well as javadocs, but couldn't find a way.A

Re: Get processDefinition tasks , start event, end event using Java, without creating a process instance

martin_grofcik — Mon, 29 Feb 2016 12:27:24 GMT

Hi Mansi,

have a look on the following jUnit test in the activiti source:
org.activiti.engine.test.bpmn.event.end.TerminateEndEventTest#testParseTerminateEndEventDefinitionWithExtensions

Regards
Martin

Re: Get processDefinition tasks , start event, end event using Java, without creating a process instance

mansi — Tue, 01 Mar 2016 08:17:54 GMT

Hey, Thanks a lot, I looked into that test and was able to proceed with my task.

I also want to know if there is some way to update a processDefinition after creating it once.
Thanks.

Re: Get processDefinition tasks , start event, end event using Java, without creating a process instance

martin_grofcik — Tue, 01 Mar 2016 08:33:32 GMT

Hi Mansi,

I do not know about such a possibility in activiti5 (it could be supported in the activiti6).

Regards
Martin

Re: Get processDefinition tasks , start event, end event using Java, without creating a process instance

mansi — Tue, 01 Mar 2016 10:15:34 GMT

Okay thanks again.

I have one more question:
Is there a way to create a process definition without specifying configuration in an xml file, instead specifying it programatically?

Re: Get processDefinition tasks , start event, end event using Java, without creating a process instance

martin_grofcik — Tue, 01 Mar 2016 12:07:40 GMT

Hi,

You can deploy process definition with org.activiti.engine.RepositoryService#createDeployment and deploy the deployment afterwards.

Regards
Martin

Re: Get processDefinition tasks , start event, end event using Java, without creating a process instance

mansi — Tue, 01 Mar 2016 12:18:05 GMT

So ultimately it will need the xml file right? when we will deploy it?

Re: Get processDefinition tasks , start event, end event using Java, without creating a process instance

jbarrez — Tue, 01 Mar 2016 21:22:07 GMT

BPMN 2.0 is an XML standard, so yes.
The alternative is creating it in java (see the BpmnModel approach in the class that Martin mentions above).

Re: Get processDefinition tasks , start event, end event using Java, without creating a process instance

mansi — Wed, 02 Mar 2016 12:07:48 GMT

Hey, Thanks a lot will look into it.

Re: Get processDefinition tasks , start event, end event using Java, without creating a process instance

mansi — Fri, 04 Mar 2016 08:27:08 GMT

Hello, I found that after creating a process using BpmnModel, it has to be converted to xml for deployment, is that correct? Or is there any other way of doing it?

Re: Get processDefinition tasks , start event, end event using Java, without creating a process instance

mansi — Mon, 07 Mar 2016 08:21:34 GMT

Also Martin mentioned above that there is no possibility to update a process definition once created. Is there a way to remove the process from BpmnModel using java? Although I couldn't find any such method, if it exists, it would solve my issue. Thanks.

Re: Get processDefinition tasks , start event, end event using Java, without creating a process instance

jbarrez — Mon, 07 Mar 2016 10:47:08 GMT

"using BpmnModel, it has to be converted to xml for deployment, is that correct"

No, the repositoryService.createDeployment() takes in a BpmnModel.

"Is there a way to remove the process from BpmnModel using java"

Not sure what you mean by this?

Re: Get processDefinition tasks , start event, end event using Java, without creating a process instance

mansi — Mon, 07 Mar 2016 11:14:25 GMT

I mean to say, once I do BpmnModel.addProcess(process), is there a way to remove/modify this process from the BpmnModel?

Re: Get processDefinition tasks , start event, end event using Java, without creating a process instance

jbarrez — Fri, 11 Mar 2016 08:22:46 GMT

Once it's been deployed, no. Changing the process in the BPMNModel does not have impact on what's deployed.

Re: Get processDefinition tasks , start event, end event using Java, without creating a process instance

mansi — Mon, 14 Mar 2016 08:32:14 GMT

Thank you so much for your help so far.

I wanted to know whether we can change the Activity_Id manually in Execution of the process,
I mean can we skip the next task in defined sequenceFlow and jump to some xyz task?

Re: Get processDefinition tasks , start event, end event using Java, without creating a process instance

jbarrez — Tue, 15 Mar 2016 10:28:54 GMT

You can, but you'd have to write your own command (and execute it via the ManagementService), where you do the right database calls via the ExecutionEntityManager and such. Not supported out of the box.

Re: Get processDefinition tasks , start event, end event using Java, without creating a process instance

sunitanayak83 — Mon, 21 Mar 2016 13:21:59 GMT

I am using the Activiti designer to create and deploy a process in Activiti. My process gets deployed with no errors. But when I login to Activiti App, I am unable to start the process in my Task App.

Below are the logs from my Eclipse console :

Mar 18, 2016 2:22:31 PM org.springframework.beans.factory.xml.XmlBeanDefinitionReader loadBeanDefinitions
INFO: Loading XML bean definitions from class path resource [activiti.cfg.xml]
Mar 18, 2016 2:22:34 PM org.activiti.engine.impl.ProcessEngineImpl
INFO: ProcessEngine default created
Mar 18, 2016 2:22:34 PM org.activiti.engine.impl.bpmn.deployer.BpmnDeployer deploy
INFO: Processing resource myProcess.bpmn20.xml
id 40005 myProcess:12:40004

Below is my Junit Test :

public void startProcess() throws Exception
{
RepositoryService repositoryService = activitiRule.getRepositoryService();
repositoryService.createDeployment().name("working set").addInputStream("myProcess.bpmn20.xml",
new FileInputStream(filename)).deploy();
RuntimeService runtimeService = activitiRule.getRuntimeService();

ProcessInstance processInstance = runtimeService.startProcessInstanceByKey("myProcess");
assertNotNull(processInstance.getId());
System.out.println("id " + processInstance.getId() + " "
+ processInstance.getProcessDefinitionId());
}

I have assigned the task to $INITIATOR. The process starts successfully, but when I log into activiti-app as an administrator, I am unable to see the tasks in the task app. Why is that ?

Re: Get processDefinition tasks , start event, end event using Java, without creating a process instance

mansi — Fri, 25 Mar 2016 05:54:09 GMT

Hey @jbarrez thanks a lot.
Is there a way to know whether a process was suspended at some point , after the processInstance is deleted?
I mean is there a way to know this through the history service?

Re: Get processDefinition tasks , start event, end event using Java, without creating a process instance

jbarrez — Fri, 25 Mar 2016 15:42:50 GMT

@Mansi: no, sorry, that info is not stored anywhere.

Re: Get processDefinition tasks , start event, end event using Java, without creating a process instance

mansi — Mon, 28 Mar 2016 08:27:14 GMT

Okay. Also I don't understand the use of Model class? Could you please explain it in brief.