Re: Static Variables in Session Beans

[Johan Eltes]

Is there ever a need for static fields in a SLSB as long as the app
server allows you to configure the size of the bean instance pool
(which implies you could set it to 1)?
Instance fields of such a SLSB would serve the same purpose as using
static fields, wouldn't it?
There would be several advantages:

- Synchronization is done by app server
- No doubts regarding spec compliance
- No doubts regarding class loader impact on the actual number of
"cache" instances.
/Johan

2004-01-02 kl. 07.06 skrev Joe Sam Shirah:

    Hi Mark,

Anytime you have to use stateful session beans,
you have run out of options.
    I'm not sure how your opinion relates; the topic is stateless
session
beans.
                                                         Joe Sam

Joe Sam Shirah -        http://www.conceptgo.com
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----- Original Message -----
From: "Mark Galbreath" <[EMAIL PROTECTED]>
To: "Joe Sam Shirah" <[EMAIL PROTECTED]>;
<[EMAIL PROTECTED]>
Sent: Wednesday, December 31, 2003 7:25 PM
Subject: RE: Static Variables in Session Beans

Anytime you have to use stateful session beans, you have run out of
options.
Mark

-----Original Message-----
From: A mailing list for Enterprise JavaBeans development
[mailto:[EMAIL PROTECTED] Behalf Of Joe Sam Shirah
Sent: Wednesday, December 31, 2003 3:59 PM
To: [EMAIL PROTECTED]
Subject: Re: Static Variables in Session Beans
    In addition to shailesh sinha's comments:

    From the EJB 2.0 spec, section 7.8

    "The term "stateless" signifies that an instance has no state for
a
specific client. However, the instance variables of the instance can
contain
the state across client-invoked method calls. Examples of such states
include an open database connection and an object reference to an EJB
object."
                                                         Joe Sam

Joe Sam Shirah -        http://www.conceptgo.com
conceptGO         -        Consulting/Development/Outsourcing
Java Filter Forum:       http://www.ibm.com/developerworks/java/
Just the JDBC FAQs: http://www.jguru.com/faq/JDBC
Going International?    http://www.jguru.com/faq/I18N
Que Java400?             http://www.jguru.com/faq/Java400
----- Original Message -----
From: "K. Charan Kumar" <[EMAIL PROTECTED]>
To: <[EMAIL PROTECTED]>
Sent: Wednesday, December 31, 2003 1:07 AM
Subject: Re: Static Variables in Session Beans

Shailesh,

If you start using static variables in Stateless session beans,
meaning
to
stateless session beans is lost...  May be u can use in Stateful
session
beans...This is what I feel.
-Cheers
K.Charan Kumar
----- Original Message -----
From: "shailesh sinha" <[EMAIL PROTECTED]>
To: <[EMAIL PROTECTED]>
Sent: Wednesday, December 31, 2003 11:32 AM
Subject: Re: Static Variables in Session Beans

Yes staic variable should be used in the Stateless
session beans. EJB specs has only one limitation on
the static variables that is it should be read only,
by using final you are making it sure, So there is no
any problem in that.
 --- sanjeev kasarabada <[EMAIL PROTECTED]> wrote: >
Can static final variables be used in Stateless
Sesion
Beans?? Is there any EJB limitation on that? Your
thoughts on this are appreciated.
Thanx,
Sanjeev


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