Comments on: jBPM4 real-life example: The Train Ticket Demo (part 2: coding the business process)

By: Matthias

Matthias — Tue, 01 Feb 2011 14:11:39 +0000

Great, helped a lot! Brings up development to speed as it is totally focussed and straightforward.

By: Tom Nguyen

Tom Nguyen — Tue, 08 Dec 2009 04:00:22 +0000

Thanks for the sample, How can we customize task class in jbpm?

By: Pat

Pat — Wed, 21 Oct 2009 12:32:13 +0000

Thank you for your quick responses and patience with my basic newbie questions.

The piece I was missing was that I needed to download/execute Subversion from Collabnet in order to export your entire project out of your svn trunk. I’ve done that, and now I have what I need.

By: Joram Barrez

Joram Barrez — Wed, 21 Oct 2009 06:19:30 +0000

@Pat: You can find the source on our svn: just checkout the trunk directories from https://anonsvn.jboss.org/repos/jbpm/projects/demos/trainticket-demo/

By: Pat

Pat — Tue, 20 Oct 2009 14:29:54 +0000

Sorry, but I’m still missing something (probably something very obvious), but exactly WHERE is the .zip project file that I download, in order to Import it into Eclipse as a maven project, so that I can view/debug TrainTicketProcessUnitTestDemo.java. , process.jpdl.xml, CalculateQuoteAction.java, etc.

By: Joram Barrez

Joram Barrez — Tue, 20 Oct 2009 07:14:18 +0000

@Pat: You should have Eclipse with the m2Eclipse plugin. If you have that plugin installed, it should just be a matter of doing File -> import -> maven project.

By: Pat

Pat — Mon, 19 Oct 2009 13:38:17 +0000

Hello, I would like to import this demo project into Eclipse to study the source, and run it through debug, etc. Please detail exactly how to import into Eclipse.

By: Joram

Joram — Wed, 30 Sep 2009 14:10:53 +0000

@Andrey: To run the unit test, the easiest is to get the jboss server running. Download the all-in-one-zip, and start the server.

The unit test should be running now (I should rewrite the test using embedded JBoss, I know)

By: Andrey

Andrey — Mon, 21 Sep 2009 21:29:19 +0000

Is there some installation howto?

I’ve downloaded from http://anonsvn.jboss.org/repos/jbpm/projects/demos/trainticket-demo/jbpm-on-rails/trunk/process-logic/ and tried to import pom.xml into my eclipse … the build failed, after fixing some dependencies the hibernate failed, after fixing hibernate config, something else failed … “ould not obtain connection to any of these urls: localhost:1099″ …

Are there some tricks I have to do? Straightforward method (download -> import -> run) doesn’t work for me.

Thank you,
Andrey

By: Joram Barrez

Joram Barrez — Sat, 12 Sep 2009 12:43:53 +0000

@George: Thanks for the encouragement! Keep on eye on my RSS feed, because the next articles are going to be really awesome

There is indeed one fundamental difference between the ‘custom’ and ‘java activity’. The ‘custom’ activity implements a jBPM interface, BUT is has also access to the execution that way. The Java activity doesn’t have access to the execution, but you can call just any method on the class you define. Since I need the execution to retrieve and store the process variables (see CalculateQuoteAction), I need to use a custom activity.

An additional advantage of the custom activity is that you can control the execution. If you want the activity to behave as a wait state, then you can do this very easily.

So to conclude: a Java activity is for a true automatic piece of logic, a custom activity is for anything else (only limited by your imagination). In practice, you’ll probably use the custom activity more than the Java activity.