Its possible to use the Seam-jBPM functions in a Seam-Portlet configuration?

[xalperte]

Hi, we are using a Portlet Seam RichFaces configuration in our projects since one year ago and it works very well, but now we need to add BPM functions to our stack and we are having problems. We don't know if Seam-jBPM can be used in a Seam-Portlet configuration, we didn't found nothing about that. Our first doubt will be, is that possible? can we use workflows in a Seam-Portlet (using the Seam annotations and facilities of course)?

Well, let's suppose that's possible and we are doing something wrong.

The test we are trying to do is very simple. We get the Ticketing example of the book: JBoss Seam, Simplicity and Power beyond Java EE (by Michael Juntao Yuan and Thomas Heute, Prentice Hall), and we added all the required artifacts to run the example as a Portlet.

• The ready to be deployed EAR file can be downloaded here: rudder-app.ear


• Also the source code can be downloaded from: sourceTicketing.zip

This example is a little application with the following logic (three steps):

• login.xhtml: this is the Home Page of the portlet and shows the login form. The form is connected with the LoginAction EJB that is responsible to initialize the Actor (needed by the jBPM runtime). After login, the system redirect us to home.xhtml.

• home.xhtml: this page shows all the actions we can do, the first one allow us create a new Ticket. Let's do click over the Create a new ticket option and we will be redirect to the newTicket.xhtml page.

• newTickect.xhtml: here we found the problem. In that page we can fill the Ticket data (a Seam POJO component), and then invoke the newTicket() action in the TicketSystemAction EJB. This method is annotated with a @CreateProcess and is the resonsible of initiate automatically a new instance of the process TicketProcess.

     THE PROBLEM: Everything runs well util the end of the resquest. The new process instance is created and persisted into the database, but an exception is thrown at the end of the request, when Seam is flushing and disposing the Contexts. The BusinessProcess Context is trying to load the current ProcessInstance but the Session is closed (the transaction is commited before clean the contexts).

We are forgotten something in the configuration?

Thanks in advance!.

Our stack is: 

• JBoss AS 4.2.2.GA


• JBoss Portal 2.6.4.GA

The EAR has the nexts library versions:

• JBoss Seam 2.1.0.A1


• JBoss Portlet Bridge 1.0.0.B1


• JBoss jBPM 3.2.3


• JBoss EL 2.0.1.GA


• Javassist 3.3.ga


• Richfaces 3.1.4.SR1 (but is not used by the example)


• Facelets 1.1.14

Regards,
Javier

[xalperte]

I forgot to add the link to the full stacktrace of the Exception. ExceptionStacktrace.txt

[xalperte]

The following configurations has already been tested with the same results:

Configuration 1

• JBoss Portal 2.6.6.GA


• JBoss Seam 2.0.3.CR1


• JBoss Portlet Bridge 1.0.0.B4

Configuration 2

• JBoss Portal 2.6.6.GA


• JBoss Seam 2.1.0.BETA1


• JBoss Portlet Bridge 1.0.0.B4

[pmuir]

Please file an issue in JIRA

[mnigrelli]

Hi all,
we have been encountering the same problem with the following configuration:

JBoss Portal 2.7.1
JBoss Seam 2.1.1
JBoss Portlet Bridge 1.0.0.B6
JBoss jBPM 3.2.2
Richfaces 3.3.0GA

The application is a Seam/jBPM application, embedded in a portlet, running on Jboss Portal, which is deployed on JbossSOA.

Scenario: the user(logged through portal), has created a process and started a bpm task and then tries either to get back to the task list or to end it and goes to the next task.

The application works great(!!!) if we use a4j buttons/links. If we start using either s:button/s:link or h:commandButton/h:commandLink, it gives the following error:
ERROR [TaskMgmtSession] org.hibernate.SessionException: Session is closed!
..........
..........
ERROR [viewhandler] Error Rendering View[/...........xhtml]
org.jbpm.JbpmException: couldn't get task instance '1'

Any help is greatly appreciated.

Regards,

Max