CreateApplicationTask in chapter 5

[johnrd]

Hi,

I am going through the code examples from the book Activiti in action. I have deployed the project in chapter 5 onto my tomcat server.
the jar file as well as the bar file are deployed. However when I start the  lone application process with the form data as specified in the book I am getting a error  in the createapplicationtask   as such

   … 30 more
Caused by: java.lang.NullPointerException
   at org.bpmnwithactiviti.chapter5.CreateApplicationTask.execute(CreateApplicationTask.java:10)
   at org.activiti.engine.impl.delegate.JavaDelegateInvocation.invoke(JavaDelegateInvocation.java:34)

I could not figure out how or why this is happening.

Help will much needed.

thanks

John.

[frederikherema1]

What is exactly on line 10 of the createApplicationTask?

[johnrd]

Hi,

The code is exactly as in the book code sample

line 10  is    la.setCreditCheckOk((Boolean) execution.getVariable("creditCheckOk"));

///// code fragment given below///

public class CreateApplicationTask implements JavaDelegate {

public void execute(DelegateExecution execution) {
  LoanApplication la = new LoanApplication();
  la.setCreditCheckOk((Boolean) execution.getVariable("creditCheckOk"));
  la.setCustomerName((String) execution.getVariable("name"));
  la.setIncome((Long) execution.getVariable("income"));
  la.setRequestedAmount((Long) execution.getVariable("loanAmount"));
  la.setEmailAddress((String) execution.getVariable("emailAddress"));
  execution.setVariable("loanApplication", la);
}
}

[trademak]

Hi,

Are you testing this with Activiti 5.12.1? The reason why I'm asking this is because we changed the automatic promotion of script variables to execution variables.

Best regards,

[johnrd]

yes it is the latest distribution from the site    activiti 5.12.1

[trademak]

Ok, please read the user guide section about script tasks (http://www.activiti.org/userguide/index.html#bpmnScriptTask)
You should explicitly set the variable now like:

<blockcode>
<script>
    def scriptVar = "test123"
    execution.setVariable("myVar", scriptVar)
</script>
</blockcode>

That should prevent the nullpointer from being thrown.

Best regards,

[johnrd]

thanks for your help.
I would like to point out that just after I had this problem with creatapplicationtask , i could no longer login to activity explorer as described here  http://forums.activiti.org/content/cant-login-activiti-explorer

I'm not sure how to fix this issue