NPE when generating diagram with NoneThrowingEvent

As we transition to the new Hyland Community, some post links may be temporarily disrupted as we finalize redirects. We apologize for the inconvenience and are working to resolve this as quickly as possible. Details.

mrysavy

Hi,

when programatically deploying new diagram with NoneThrowingEvent, following NPE is raised

WARN  [2014-08-27 16:35:39,646] Error while generating process diagram, image will not be stored in repository
java.lang.NullPointerException
   at org.activiti.image.impl.DefaultProcessDiagramCanvas.drawCatchingEvent(DefaultProcessDiagramCanvas.java:413)
   at org.activiti.image.impl.DefaultProcessDiagramCanvas.drawThrowingNoneEvent(DefaultProcessDiagramCanvas.java:449)
   at org.activiti.image.impl.DefaultProcessDiagramGenerator$3.draw(DefaultProcessDiagramGenerator.java:135)
   at org.activiti.image.impl.DefaultProcessDiagramGenerator.drawActivity(DefaultProcessDiagramGenerator.java:489)
   at org.activiti.image.impl.DefaultProcessDiagramGenerator.generateProcessDiagram(DefaultProcessDiagramGenerator.java:470)
   at org.activiti.image.impl.DefaultProcessDiagramGenerator.generateDiagram(DefaultProcessDiagramGenerator.java:382)
   at org.activiti.image.impl.DefaultProcessDiagramGenerator.generateDiagram(DefaultProcessDiagramGenerator.java:404)
   at org.activiti.engine.impl.bpmn.deployer.BpmnDeployer.deploy(BpmnDeployer.java:130)
   at org.activiti.engine.impl.persistence.deploy.DeploymentManager.deploy(DeploymentManager.java:50)
   at org.activiti.engine.impl.cmd.DeployCmd.execute(DeployCmd.java:103)
   at org.activiti.engine.impl.cmd.DeployCmd.execute(DeployCmd.java:37)
   at org.activiti.engine.impl.interceptor.CommandInvoker.execute(CommandInvoker.java:24)
   at org.activiti.engine.impl.interceptor.CommandContextInterceptor.execute(CommandContextInterceptor.java:57)
   at org.activiti.engine.impl.interceptor.LogInterceptor.execute(LogInterceptor.java:31)
   at org.activiti.engine.impl.cfg.CommandExecutorImpl.execute(CommandExecutorImpl.java:40)
   at org.activiti.engine.impl.cfg.CommandExecutorImpl.execute(CommandExecutorImpl.java:35)
   at org.activiti.engine.impl.RepositoryServiceImpl.deploy(RepositoryServiceImpl.java:78)
   at org.activiti.engine.impl.repository.DeploymentBuilderImpl.deploy(DeploymentBuilderImpl.java:156)
   at TestActiviti.deploy(TestActiviti.java:61)
   at TestActiviti.deploy(TestActiviti.java:51)
   at TestActiviti.main(TestActiviti.java:34)
‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍

I think that the problem is in the DefaultProcessDiagramCanvas.drawCatchingEvent(…) method. When this method is called from drawThrowingNoneEvent(…) method in the same class, the third argument ("image") is null but the line 413 call image.getWidth(). I'm using 5.16.1 version of Activiti.

Thanks for the response and/or fix.
Michal

leggebroten

I'm seeing the similar issue. 
No changes to models. 
Only change is upgrading from 5.15.1 to 5.16.1.
Seems related to signals and messages as models without them appear to deploy OK.
Attaching a simple model that throws the error

simple-signal-and-message-model.bpmn20_0.txt.zip