Declare a dependency on an MC bean

[rnicholson10]

I'm trying to declare a dependency on the HornetQServer MC bean.

I took the name of the bean from the JMX Console to create the depends clause but it does not work:

@Depends(value={"jboss.deployment:id=HornetQServer,type=Component"})

This is the only reference I can find to HornetQServer in the JMX Console.

The HornetQ forum led me here, this was my original post http://www.jboss.org/index.html?module=bb&op=viewtopic&p=4254388#4254388

Could someone shed some light on this for me please?

Cheers,

Ross

[alesj]

I need more info.

Where do you put this @Depends?
"I have an ServiceBean" tells me nothing.

What type of service is this?
How is it deployed?
...

[jaikiran]

1) What does the import statement for @Depends look like (there is a @Depends annotaiton in MC as well as EJB3, so want to make sure you are using the correct one).

2) In that other post, you mentioned you are adding a @Depends on the HornetQServer like this:

@Depends(value={"jboss.deployment:id=HornetQServer,type=Component"})

That's a MBean created for the deployment of the HornetQServer MC bean. I don't think, adding that dependency will work (although i am not sure).

From what you have been explaining, i guess you want this:

@org.jboss.beans.metadata.api.annotations.Depends(value={"HornetQServer"})

By the way, on what component are you placing this dependency? EJB? And please post the complete exception stacktrace that you see.

[jaikiran]

Ah, too slow to click on submit! Did not see Ales' reply :)

[rnicholson10]

Apologies,

I was using a EJB3 Service Bean.

The solution by Jakiran works correctly and is as follows:

@Service
@Local(InputServiceBeanLocal.class)
@Remote(InputServiceBeanRemote.class)
@Management(InputServiceBeanManagement.class)
@Depends(value={"HornetQServer"})
public class InputServiceBean implements InputServiceBeanLocal, InputServiceBeanRemote, InputServiceBeanManagement
{
...
}

How would you normally figure out what the correct name is for the MC Bean? Is it simply the id values of the component from the JMX console?

[alesj]

"jaikiran" wrote:

@Depends(value={"jboss.deployment:id=HornetQServer,type=Component"})

That's a MBean created for the deployment of the HornetQServer MC bean. I don't think, adding that dependency will work (although i am not sure).

No it wouldn't.
As this is only part of MBeanServer, and not of MC.

[alesj]

"rnicholson10" wrote:

How would you normally figure out what the correct name is for the MC Bean?

There are several ways:
* look into the -jboss-beans.xml file where this bean is defined --> its name attribute
* new admin-console
* Grapher tool

[rnicholson10]

Ok, so I looked in the -jboss-beans.xml file but every bean defined has a name. It's not easy to figure out which is the one I'm looking for.

The new admin-console (which I'd never seen before), has absolutely no mention of HornetQServer, nor can I see any mention of micro-containers in the tree listing. Should it be there?

[alesj]

"rnicholson10" wrote:
Ok, so I looked in the -jboss-beans.xml file but every bean defined has a name. It's not easy to figure out which is the one I'm looking for.

In the worst case you can ask the HornetQ guys about the name. ;-)
If they happen use custom schema, I agree, it can be non-trivial.

[rnicholson10]

I love it!

I'll let them know the solution and they can add it to their WIKI, it'll save others the hassle of the search.

Thanks a million,

R.