topic Re: How to generate the diagram of a Deployed Workflow in Alfresco Archive

How to generate the diagram of a Deployed Workflow

vire7777 — Fri, 06 Dec 2013 16:00:41 GMT

Hi Dear Activiti CommunityMaybe someone could tell me how it could be possible to have the diagram of a deployed Workflow (after the Bpmn deployment) without any instance of it.I would love to show my users the different diagram before they launch an instance of the specified workflow.I use this to

Re: How to generate the diagram of a Deployed Workflow

felipe1 — Fri, 06 Dec 2013 17:40:07 GMT

To get a process diagram use repositoryService#getResourceAsStream:


  ProcessDefinitionEntity pde = (ProcessDefinitionEntity) repositoryService.createProcessDefinitionQuery().processDefinitionId(processDefId)
    .singleResult();

  repositoryService.getResourceAsStream(pde.getDeploymentId(), pde.getDiagramResourceName());

  InputStream is = repositoryService.getResourceAsStream(pde.getDeploymentId(), pde.getDiagramResourceName());

  return is;

this will give you an InputStream containing the image data.

Re: How to generate the diagram of a Deployed Workflow

vire7777 — Mon, 09 Dec 2013 09:44:11 GMT

In fact, i don't see the difference between your code and mine ?

Re: How to generate the diagram of a Deployed Workflow

trademak — Mon, 09 Dec 2013 11:18:32 GMT

Are you sure your process definition contains the necessary BPMN DI information?

Best regards,

Re: How to generate the diagram of a Deployed Workflow

felipe1 — Mon, 09 Dec 2013 11:42:28 GMT

Sorry Vire7777, I didn't read your code carefully, I just read the thread title and copied and pasted a working code I use to get a process diagram.

In your understanding what is the difference between a launched and a deployed process?

I'm asking that because your code does not reference a process instance at any point. It just passes the process definition Id as an argument to the getDeployedProcessDefinition method. So the result is a diagram which does not highlights the active tasks.

Re: How to generate the diagram of a Deployed Workflow

vire7777 — Tue, 10 Dec 2013 08:59:32 GMT

That s exactly what i want !
I want the diagram of the process BEFORE any instance was launched, just after deployment

So there s no active task as there is no instance launched.

It's just to show a list of all deployed workflow to the user, then they can choose which one they want to launch (seeing the diagram) then they click on : "create an instance" button and it launch an instance.

Here for me the cycle of a workflow :
1) BPMN DEFINITION
2) Workflow deployed in BDD (you took your BPMN and deployed it
3) Launch an instance of the workflow (manually or automatically)

I want the diagram at point 2 !

Re: How to generate the diagram of a Deployed Workflow

martin_grofcik — Tue, 10 Dec 2013 09:18:38 GMT

Hi,

the only think needed is process definition.
Possibilities:

http://www.activiti.org/userguide/#generatingProcessDiagram


 @Get
  public InputRepresentation getProcessInstanceDiagram() {
    ProcessInstance processInstance = getProcessInstanceFromRequest();
    
    ProcessDefinitionEntity pde = (ProcessDefinitionEntity) ((RepositoryServiceImpl) 
            ActivitiUtil.getRepositoryService()).getDeployedProcessDefinition(processInstance.getProcessDefinitionId());

    if (pde != null && pde.isGraphicalNotationDefined()) {
      BpmnModel bpmnModel = ActivitiUtil.getRepositoryService().getBpmnModel(pde.getId());
      InputStream resource = ProcessDiagramGenerator.generateDiagram(bpmnModel, "png", ActivitiUtil.getRuntimeService().getActiveActivityIds(processInstance.getId()));

      InputRepresentation output = new InputRepresentation(resource, MediaType.IMAGE_PNG);
      return output;
      
    } else {
      throw new ActivitiIllegalArgumentException("Process instance with id '" + processInstance.getId() + "' has no graphical notation defined.");
    }
  }

Regards
Martin

Re: How to generate the diagram of a Deployed Workflow

vire7777 — Tue, 10 Dec 2013 09:49:23 GMT

Thanks for your answers

Re: How to generate the diagram of a Deployed Workflow

minhquankq — Thu, 07 Jul 2016 09:07:36 GMT

Hi @martin.grofcik,
I'm using DefaultProcessDiagramGenerator class (in activiti-image-generator module) to generate diagram of current process instance (with highlight activiti and highlight sequenceflow), but the result image is not included sequence name, when I'm debugging, the map labelLocationMap allway empty, so it can not draw the sequence name.

Can I draw sequence flow name with DefaultProcessDiagramGenerator class?

Re: How to generate the diagram of a Deployed Workflow

martin_grofcik — Tue, 12 Jul 2016 06:19:36 GMT

Hi,

Technically it should be possible. If flow name is not drawn, there is a bug in DiagramGenerator.

Regards
Martin