GraphicInfo not available for bpmnModel

Flowable Engine
1

I’m trying to show the graphic of the process diagram associated to an active task

Task t = Bpm.engine().getTaskService().createTaskQuery().taskId(request.getParameter(“id”)).singleResult();
BpmnModel model = Bpm.engine().getRepositoryService().getBpmnModel(t.getProcessDefinitionId());
InputStream is = Bpm.engine().getProcessEngineConfiguration().getProcessDiagramGenerator().generateJpgDiagram(model);

I am getting a NPE
Caused by: java.lang.NullPointerException
at org.flowable.image.impl.DefaultProcessDiagramGenerator.initProcessDiagramCanvas(DefaultProcessDiagramGenerator.java:887)

When looking at the sources, it seems that
GraphicInfo flowNodeGraphicInfo = bpmnModel.getGraphicInfo(flowNode.getId());

For the first flowNode found (startprocess1) returns null

Am I missing some configuration so as to save the bmpndi when deploying? Why does it return null?

2

Hi,

How was the BPMN XML created?
It seems that it’s missing BPMN DI information (at least for this element), and therefore it can’t generate de process diagram.

Best regards,

Tijs

3

Hello I am getting the same error:

I created the BPMN using the following code (written in Kotlin):

myService?.getRepositoryService()?.getBpmnModel(process?.key)
val bpmnModel: BpmnModel? =myService?.getRepositoryService()?.getBpmnModel(process?.key) //BpmnXMLConverter().convertToBpmnModel(parser)

val diagramGenerator: ProcessDiagramGenerator? = processEngineConfiguration?.processDiagramGenerator

4

Hello I am getting the same error:

I created the BPMN using the following code (written in Kotlin):

myService?.getRepositoryService()?.getBpmnModel(process?.key)
val bpmnModel: BpmnModel? =myService?.getRepositoryService()?.getBpmnModel(process?.key) //BpmnXMLConverter().convertToBpmnModel(parser)

val diagramGenerator: ProcessDiagramGenerator? = processEngineConfiguration?.processDiagramGenerator