topic Re: NullPointerException in JUEL evaluation in FormService in Alfresco Archive

NullPointerException in JUEL evaluation in FormService

frauke — Wed, 03 Nov 2010 14:12:42 GMT

Hi,I have a problem after switching to release RC1, concerning the new FormService.The codeprocessEngine.getFormService().getRenderedTaskForm(taskId);‍‍‍throws an exception:java.lang.NullPointerException at org.activiti.engine.impl.form.JuelFormEngine.getFormTemplateString(JuelFormEngine.java:58)

Re: NullPointerException in JUEL evaluation in FormService

tombaeyens — Wed, 03 Nov 2010 14:48:22 GMT

check the activiti:formKey attribute on the activity. it has changed from activiti:form to activiti:formKey i think.

Re: NullPointerException in JUEL evaluation in FormService

frauke — Wed, 03 Nov 2010 14:54:10 GMT

Yes, I changed that, but it happens nonetheless.


<userTask id="cardRequest" name="Create card request" activiti:formKey="form-card.xml" />

Frauke

Re: NullPointerException in JUEL evaluation in FormService

jbarrez — Wed, 03 Nov 2010 15:03:18 GMT

What do you want: the rendered form? Because i see that you are using an .xml suffix. Is it a valid form?

Or do you just want to retrieve the key ?

Re: NullPointerException in JUEL evaluation in FormService

frauke — Wed, 03 Nov 2010 15:51:20 GMT

I need just the key.

Re: NullPointerException in JUEL evaluation in FormService

frauke — Thu, 04 Nov 2010 12:47:53 GMT

Hi everybody,

do you have any ideas on that so far?
I'm stuck with this problem, I fear, so I am thinking about returning to beta2.

Frauke

Re: NullPointerException in JUEL evaluation in FormService

frederikherema1 — Thu, 04 Nov 2010 12:52:34 GMT

Can you double-check (in for example probe) that the resource with name "form-card.xml" is deployed in the same deployment as the process-definition for the task?

Re: NullPointerException in JUEL evaluation in FormService

frauke — Thu, 04 Nov 2010 13:05:14 GMT

I don't need it as a resource, but just as a key…. that I access via FormService.
Or is it because of the name ("*.xml")?
But on the other hand I have an example with a simple name (without ".xml"), which causes the same problem.

Re: NullPointerException in JUEL evaluation in FormService

jbarrez — Thu, 04 Nov 2010 13:56:37 GMT

If you only need the key, you can do:

StartFormData startForm = formService.getStartFormData(processDefinitionId);
String formKey = startForm.getFormKey();

Re: NullPointerException in JUEL evaluation in FormService

frauke — Thu, 04 Nov 2010 14:01:50 GMT

Great, Thanks a lot!!!