Hello,
If you're a newbie like me I guess the best place to start learning about
the timer would be running the websale example successfully. Running it was not
really easy in my case. You have to pick a db of your choice yiu are
comfortable with where you can see the data changes, MySQL for me. A few
pointers that I like to share ( for other JBoss and hibernate instructions and
configurations see the posts here, there are lots of it)
1. Your tables must be created sucessfully and identities (users) must be
populated. Check posts here on how to do it. The websale.par must of course be
deployed. I was not successful using ant, so I had to do it the hard way via
eclipse.
2. You must test it using JBoss because it makes use of MBeans. It is where
it initially loads the JBPMSession and hibernate mappings. i think unless you
know how to deploy it in other appservers. I dont know how to use hibernate but
i dont think its necessary.
3. There are two directories to take note in the deploy. the jbpm.sar and
the jbpm.war. I mention this bec. the location where you should place the
action classes should be in the jbpm.sar. To do this, create a folder and name
it websale.jar or any name with .jar extension. Under this place the
org.jbpm.websale action classes (with the proper directories org>jbpm>websale).
You timer demo will not work if it cannot find the action handler classes.
The configuration and setup is really difficult at first but when you have
the app running, there's nothing to it. The SchedulerThread is started in the
web app side during startup. It continually looks for entries in the jbpm_timer
table. Once there are entries past the due date, it executes the related action
handler. That's why if it cant find the action hanlder your test will fail. The
reason why I place it in the jbpm.sar is because this is where the jbpm
executes the process. For more info, read the other posts. I hope this helps.
Regards,
Elmo
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