Session Bean pooling

[Mansour Al Akeel <ma...@gmail.com>]

Hello All:
I am new to EJB in general. We need to simulate an emergency system,
to study the resources interaction. The main actors are police agents,
ambulance, Fire department.
The idea is to create a session bean for each of these actors, and
specify how many one available at any time and ready to respond to an
emergency call. Each server represents a federate.
I am still in the design phase. The issue I am facing is, specifying
the number of available instances of an object. Knowing that session
beans doesn't support counting instances,
what would be the alternative ?

Thank you.

Re: Session Bean pooling

[Jean-Louis MONTEIRO <je...@atosorigin.com>]

Hello,

you can set the max pool size to 1.
Another way should be to use Singleton beans (new feature in EJB 3.1 and
already available in OpenEJB).

Regards,
Jean-Louis


Mansour Al Akeel wrote:
> 
> Hello All:
> I am new to EJB in general. We need to simulate an emergency system,
> to study the resources interaction. The main actors are police agents,
> ambulance, Fire department.
> The idea is to create a session bean for each of these actors, and
> specify how many one available at any time and ready to respond to an
> emergency call. Each server represents a federate.
> I am still in the design phase. The issue I am facing is, specifying
> the number of available instances of an object. Knowing that session
> beans doesn't support counting instances,
> what would be the alternative ?
> 
> Thank you.
> 
> 

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