Re: Static Variables in Session Beans

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]]On 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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