invocation of method component event

[learner]

I tried to deploy loan Request example but It throws the following error on activiti explorer
invocation of method component event in org.activiti.explorer.ui.process.ProcessDefinitionDetailPanel $1 failed

[jbarrez]

We'll need to have more stacktrace to actually say something meaningful about this.

[bogdanclaudiu]

In order to have the example running you need to add : execution.setVariable("creditCheckOk", creditCheckOk); in the script "checkCredit" inside loanrequest.bpmn20.xml. You could see from stacktrace that the value of creditCheckOk is reported as NULL in CreateApplicationTask class.

[jbarrez]

Ok i see. But that process is wrong at that point, right?

[fabrice1]

Hello
I tested same example (I guess it's example of chapter 5 in book) with jUnit test and it works.
When I deployed on tomcat server and tested proccess, I have same exception when I submit the form

Caused by: com.vaadin.event.ListenerMethod$MethodException: Invocation of method componentEvent in org.activiti.explorer.ui.process.ProcessDefinitionDetailPanel$1 failed.

and further

Caused by: java.lang.NullPointerException
at org.bpmnwithactiviti.chapter5.CreateApplicationTask.execute(CreateApplicationTask.java:10)

I guess (Boolean)execution.getVariable("creditCheckOk"); returns null

What do you mean by , the process is wrong at this point
What correction is necessary to bring in groovy code (or elsewhere) in order to activiti framework return "creditCheckOk"
(NB: I don't know groovy)

Thanks in advanced

[fabrice1]

Tell me if I wrong or not
It seems I resolved the problem with user guide "Task/xml representation"

<scriptTask id="checkCredit" scriptFormat="groovy">
   <script>
    outrintln "Checking credit for " + name;
    creditCheckOk = false;
    if((income / 2) > loanAmount){
     creditCheckOk = true;
    }
    execution.setVariable("creditCheckOk", creditCheckOk);
    outrintln "Checked credit for " + name + " outcome is " + creditCheckOk;
   </script>
    </scriptTask>

In activiti interface, process is ended (it's necessary to connect to foozie to finish the process))

but in log
Checking credit for name
Checked credit for name outcome is true

[asadmalik3]

First of all see detailed error in apache logs.

i faced this same error today, it was because of different data types in my activiti form and LoanApplication class