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Posted to users@tomee.apache.org by Per Newgro <pe...@gmx.ch> on 2010/04/09 09:21:04 UTC

Example for singleton sessionbean in EJB 3.0 (without @Singleton)

Hi *,

i would like cache some data in the container same for all users 
(current date etc.).
I implemented it with ejb 3.1 @Singleton annotation. All works fine. But:

i have to guarantee portability of my app. But jboss is not supporting 
EJB 3.1 these days.
It's not an option to use their M2. So i decided to use the single 
sessionbean in pool
configuration described in the openejb-wiki : singleton page.

But i don't know how to configure the poolsize for a bean. Can anyone 
help me out here?

Thanks
Per

Re: Example for singleton sessionbean in EJB 3.0 (without @Singleton)

Posted by Per Newgro <pe...@gmx.ch>.

Really only for all beans?

I think i remember a way of extend the bean type configuration "Default 
stateless container".
If the pool-size configuration is bound to this and there is a way for 
extend and assign
(to the singleton bean) it, then it could be configured only for beans 
related to the extended
container.

What do you think?

But i don't know exactly how this could be implemented.

Cheers
Per

Re: Example for singleton sessionbean in EJB 3.0 (without @Singleton)

Posted by Jean-Louis MONTEIRO <je...@atosorigin.com>.

Only available at container level (ie. for all beans)!
Jean-Louis


Per Newgro wrote:
> 
> Thanks, would be great to hear from you.
> 
> Cheers
> Per
> 
> 

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Re: Example for singleton sessionbean in EJB 3.0 (without @Singleton)

Posted by Per Newgro <pe...@gmx.ch>.

Thanks, would be great to hear from you.

Cheers
Per

Re: Example for singleton sessionbean in EJB 3.0 (without @Singleton)

Posted by Jean-Louis MONTEIRO <je...@atosorigin.com>.

Hi,

The poolSize of the stateless container can be set in the openejb.xml file.
But, AFAIK it is available only at container level (for all beans).

Need to check ...

Jean-Louis


Newgro wrote:
> 
> Hi *,
> 
> i would like cache some data in the container same for all users 
> (current date etc.).
> I implemented it with ejb 3.1 @Singleton annotation. All works fine. But:
> 
> i have to guarantee portability of my app. But jboss is not supporting 
> EJB 3.1 these days.
> It's not an option to use their M2. So i decided to use the single 
> sessionbean in pool
> configuration described in the openejb-wiki : singleton page.
> 
> But i don't know how to configure the poolsize for a bean. Can anyone 
> help me out here?
> 
> Thanks
> Per
> 
> 

-- 
View this message in context: http://n4.nabble.com/Example-for-singleton-sessionbean-in-EJB-3-0-without-Singleton-tp1816013p1836700.html
Sent from the OpenEJB User mailing list archive at Nabble.com.