Using JbpmContext.save(processInstance), the TaskInstall don

[liuyan520]

Hi All,

These days i came accross a strange problem.
First i create a process instance and return back the start task instance id.
The code is shown in blow.

Long lo = (Long)jbpmTemplate.execute(new JbpmCallback() {
public Object doInJbpm(JbpmContext context) {
ProcessInstance processInstance = context
.newProcessInstance(processName);
TaskInstance taskInstance = processInstance.getTaskMgmtInstance()
.createStartTaskInstance();

context.save(processInstance);

return taskInstance.getId();
}
});
return lo.longValue();



After creating the process instance, i can't access the corresponding Token and TaskMgmtInstance from the TaskInstance which load by using the taskinstanceId return back from the above code.

After checking the database, the relationship between the taskinstance and Token isn't persisted.

My quesion is why after using JbpmContext.save(ProcessInstance),the relationship is lost.

My environment is show below:
1:Using spring module integrate the spring and jbpm.
2:Using OpenSessionInView filter to keep one session per request.

Thanks in advance.

Best Wishes
Lucas

[kukeltje]

you have to close the context

[liuyan520]

Hi kukeltje,


The JbpmTemplate which gets from Spring Module responsible for closing the context,so it's not expressed in my code snippet.

Now i extend the OpenSessionInView filter which gets form the Spring framework,overridding the closeSession method which flush the session each time the request completed.And this sovled the problem.

But since we can't depend on non-transactional behaviour,can you give me a better solution.

BTW:I don't know why can't flush the session in the HibernateTemplate.

Best Wishes
Lucas

[kukeltje]

Lucas,

I think you should ask in the spring-jbpm forum as well. None of these spring templates is used by us so the developers of those are more experienced than I am/we are with this.

Sorry I cannot be of more help, maybe others (even in this forum) have a clue, but I don't.

What you can try is to turn on debug of hibernate and and/or the spring templates and check if an insert is done.