Programatically create a Process which has a ServiceTask calling my Java Service

[viggo_navarsete]

Hi,

I'm trying to extend on the example found here: http://stacktrace.be/blog/2013/03/dynamic-process-creation-and-deployment-in-100-lines/

I have made my own service, MyService which implements the JavaDelegate interface. Currently I'm only doing a System.out.println from this class, but I'm trying to call it from a programatically made ServiceTask which is added to the Process. Code example with error output can be found here:
http://pastie.org/private/0ztlandefvdhw710exltw

Thanks in advance

[frederikherema1]

Have you tried to use the line below (and leave out the setType()):

serviceTask.setImplementationType(ImplementationType.IMPLEMENTATION_TYPE_CLASS);
Also, make sure you add a sequence-flow from task2 to serviceTask and one from serviceTask to end, to make sure the process-flow includes the service-task…

[viggo_navarsete]

Thanks for update! It certainly helped using the setImplementationType the way you described, I also missed the wiring you noted. BUT, now when I run the test, it runs green, the generated PNG contains all three tasks, BUT in my class implementing the JavaDelegate I both log a message and throw a UnsupportedOperation, but nothing fails, and nothing is logged, which makes me believe it's not called at all!

public class MyJavaService implements JavaDelegate {

    private static final Logger logger = LoggerFactory.getLogger(MyJavaService.class);
   
    @Override
    public void execute(DelegateExecution de) throws Exception {
        logger.info("CALLING MyJavaService");       
        throw new UnsupportedOperationException("Not supported yet.");
    }
   
}

Any clue?

Here is the unit test I run: http://pastie.org/private/hcfkouxlulvaeos7nxr2xa

[viggo_navarsete]

I also tried to change the value of the serviceTask.setImplementation to something crap (not a valid package+class name) and I got no issues, so the process doesn't seem to care about it at all

[viggo_navarsete]

I realized that since the two first tasks were user tasks, they probably need some user interaction(!) in order for the process to go from task 1 to task 2, and hence the third task which I added (a ServiceTask) would never be called/executed!
So, I switched the order of the tasks so that the ServiceTask was the first one, and it was called

I consider this question as answered! (but, is it possible to simulate user interaction programatically as well? Maybe not a valid use case for it, but just curious..)

[frederikherema1]

Sure, use the TaskService to query for taks (createTaskQuery()) and complete them (or any other action you might want to do). I suggest you do a quick read through the Javadocs of our services, so you get an overview of the possibilities of the API…