topic Re: Invocation of method componentEvent in org.activiti.explorer.ui.task.TaskDetailPanel$4 fail in Alfresco Forum

Invocation of method componentEvent in org.activiti.explorer.ui.task.TaskDetailPanel$4 fail

nhhao1996 — Thu, 21 Feb 2019 04:03:21 GMT

Hi everyone!I just made a simple process: start -> service task -> endI create a Java class to implement into service task to save diagram before process end. Here is my codeublic class CaptureProcess implements JavaDelegate{@Override public void execute(DelegateExecution delegateExecutio

Re: Invocation of method componentEvent in org.activiti.explorer.ui.task.TaskDetailPanel$4 fail

pault — Thu, 21 Feb 2019 13:03:19 GMT

Do you have the full stack trace for the exception to help see what is going on.

Re: Invocation of method componentEvent in org.activiti.explorer.ui.task.TaskDetailPanel$4 fail

nhhao1996 — Fri, 22 Feb 2019 02:40:09 GMT

I fixed! Thank you!

Re: Invocation of method componentEvent in org.activiti.explorer.ui.task.TaskDetailPanel$4 fail

kgastaldo — Mon, 25 Feb 2019 16:43:02 GMT

Could you share how you fixed the issue? Just in case someone else runs into the same issue!

Re: Invocation of method componentEvent in org.activiti.explorer.ui.task.TaskDetailPanel$4 fail

nhhao1996 — Tue, 26 Feb 2019 01:35:21 GMT

Because process definition is just get the designed diagram not diagram with current task highlighted so I changed it into process instance, here is my code to get diagram with current task with process instance:

public class CaptureProcess implements JavaDelegate {
      @Override
      public void execute(DelegateExecution execution) throws Exception {
            FileOutputStream outputStream = new FileOutputStream(new File("d:\\service-task.png"));

            IOUtils.copy(captureProcess(execution.getProcessInstanceId()), outputStream);
            outputStream.close();
      }

      public static InputStream captureProcess(String processInstanceId) throws IOException {
            ProcessEngine processEngine = ProcessEngines.getDefaultProcessEngine();

            RuntimeService runtimeService = processEngine.getRuntimeService();

            RepositoryService repositoryService = processEngine.getRepositoryService();

            ProcessInstance processInstance = runtimeService.createProcessInstanceQuery()
                                                                     .processInstanceId(processInstanceId).singleResult();
            // null check
            if (processInstance != null) {
                  // get process model
                  BpmnModel model = repositoryService.getBpmnModel(processInstance.getProcessDefinitionId());
                  if (model != null && model.getLocationMap().size() > 0) {
                        ProcessDiagramGenerator generator = new DefaultProcessDiagramGenerator();
                        return generator.generateDiagram(model, "png" ,runtimeService.getActiveActivityIds(processInstanceId));
                  }
         }
         return null;
      }
}

And if you want to get original diagram without highlighted task, you can check in Activiti User Guilde, there are a example code for you to do this:

ProcessDefinition processDefinition = repositoryService.createProcessDefinitionQuery() .
processDefinitionKey("expense") .singleResult();
String diagramResourceName = processDefinition.getDiagramResourceName();
InputStream imageStream = repositoryService.getResourceAsStream( processDefinition.getDeploymentId(), diagramResourceName);

Re: Invocation of method componentEvent in org.activiti.explorer.ui.task.TaskDetailPanel$4 fail

nhhao1996 — Tue, 26 Feb 2019 01:36:04 GMT

I updated the answer, thanks for your reply!