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From Michael Bouschen <mbo.t...@spree.de>
Subject Re: PersistenceManager UserObject
Date Thu, 29 Sep 2005 21:16:58 GMT
Hi Karan,

yes, I think this should work.

Regards Michael

>Hi Michael,
> I am thinking of a scenario where it can be used. Correct me if i am wrong.
> lets say a stateless session bean (Container managed transaction), has a
>method
> method A(){
> // get the pm
> pm.setUserObject(new Object());
> B();
> pm.close();
>}
> another session bean has
>  method B(){
> //get pm
> pm.getUserObject(); //this should work
> }
> assuming that the same transaction got propagated to B(), should we be able
>to get the UserObject, because the second session bean should also get the
>same instance of pm as the first one.
>Let me know if this could be a usecase of get/set User Object
> On 9/29/05, Michael Bouschen <mbo.tech@spree.de> wrote:
>  
>
>>Hi Karan,
>>
>>    
>>
>>>Hi Craig,
>>>Thanks.
>>>What happens to the user object once i close the pm?
>>>
>>>
>>>      
>>>
>>I think nothing will happen. Accoring to the spec a user object is not
>>inspected or used in any way by the JDO implementation.
>>
>>Regards Michael
>>
>>    
>>
>>>On 9/29/05, Craig Russell <craig.russell@sun.com> wrote:
>>>
>>>
>>>      
>>>
>>>>Hi Karan,
>>>>
>>>>The UserObject pattern is intended for applications that need to
>>>>access some local state that is associated with the persistence
>>>>context. Any persistent object can navigate to its persistence manager
>>>>and access some application-specific data.
>>>>
>>>>This turned out to be very useful in JDO, so much so that users asked
>>>>for finer-grained UserObject information: a Map of UserKey and
>>>>UserValue.
>>>>
>>>>Craig
>>>>
>>>>From: karan.malhi@gmail.com
>>>>Subject: user object with pm
>>>>Date: September 29, 2005 8:24:33 AM PDT
>>>>To: jdo-dev@db.apache.org
>>>>Reply-To: jdo-dev@db.apache.org, karan.malhi@gmail.com
>>>>
>>>>Hi Craig,
>>>>What is the purpose of get/setUserObject in the pm api? What would be
>>>>        
>>>>
>>the
>>    
>>
>>>>use-case where i would use these methods?
>>>>
>>>>
>>>>--
>>>>Karan Malhi
>>>>
>>>>
>>>>
>>>>        
>>>>
>>>
>>>--
>>>Karan Malhi
>>>
>>>
>>>
>>>      
>>>
>>--
>>Michael Bouschen Tech@Spree Engineering GmbH
>>mailto:mbo.tech@spree.de http://www.tech.spree.de/
>>Tel.:++49/30/235 520-33 Buelowstr. 66
>>Fax.:++49/30/2175 2012 D-10783 Berlin
>>
>>
>>    
>>
>
>
>--
>Karan Malhi
>
>  
>


-- 
Michael Bouschen		Tech@Spree Engineering GmbH
mailto:mbo.tech@spree.de	http://www.tech.spree.de/
Tel.:++49/30/235 520-33		Buelowstr. 66			
Fax.:++49/30/2175 2012		D-10783 Berlin			


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