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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.

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Comments

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