How to get the jbpm context ?

[yegaofei888]

Hi All,

I am converting the jbpm websales to jportal portlet.

I found that: the

 JbpmContext.getCurrentJbpmContext()

method doesn't work, in other words, it returns NULL

But

JbpmConfiguration.getInstance().createJbpmContext();

works fine. It also can get the default jbpm context.

I wonder if the second code is correct. Could you please tell me the differences between them?

Thanks!

My portal is 2.4.0 jboss is 4.0.4.GA and jbpm is 3.1.2

[cocampo]

I believe that, once you get a JbpmConfiguration instance and after you created a context with that instance, you can actually use getCurrentJbpmContext.

Test this code:

JbpmConfiguration config = JbpmConfiguration.getInstance();
JbpmContext context = config.createJbpmContext();
assertEquals(context, config.getCurrentJbpmContext());

Let me know if that works for you.

Regards.

[yegaofei888]

Hi cocampo,

I mean if the

JbpmContext.getCurrentJbpmContext()

will work

[cpob]

You have to create the jbpm context first with

JbpmConfiguration.getInstance().createJbpmContext();

before you can get the current. Once you have created it, then you can get the current with

JbpmContext.getCurrentJbpmContext()

You've got to create something before you can get the current instance of it :)

[yangdaolin]

JbpmContext.getCurrentJbpmContext() is thread safe.

When you call context object with:

JbpmConfiguration.getInstance().createJbpmContext();

You can get context object in current Thread only.

[yegaofei888]

Thank you !

Now I change the code UserBean.java like this:

public class UserBean {

 String userName;
 static{
 JbpmConfiguration.getInstance().createJbpmContext();
 }
.........

public String login() {
 JbpmContext.getCurrentJbpmContext().setActorId(userName);
 return "home";
 }

public List getUsers() {

 Session session = JbpmContext.getCurrentJbpmContext().getSession();
 IdentitySession identitySession = new IdentitySession(session);
 return identitySession.getUsers();
 }
..............

I am not sure if this code will work fine when muilt users login at the same time

[yegaofei888]

Sorry, I shall not put the code createing jbpm instantce into static block.

I move it to constructor

public UserBean(){
 JbpmConfiguration.getInstance().createJbpmContext();
}

[yegaofei888]

Hi all,

My question is that in HomeBean.java, how to get the jbpm context, which was created in UserBean?

As in UserBean.java, it set the actorId, so I have to get the same jbpm context, and then I can get the same actor Id, not null value.

Shall I put this actor Id into portlet session, not jbpm context ?

[yangdaolin]

If you can make sure that you use the HomeBean only in a thread, your codes is safe, otherwise you can't get current JbpmContext. you should put these into your porlet session. I want to know when you close JbpmContext.

[morpheus_jboss]

I am converting the jbpm websales to jportal portlet.

Hi, I am doing the same thing. I am insterested in the questions asked here in this thread before. Namely, ActorId in portlet session or JbpmContext?

More generally, I know the portlet context is an extension of servlet context. but what is their relation to the jbpmContext if the jbpm Webapp is deployed as a portlet?