Re: Multiple EOObjectStoreCoordinators

Chuck Hill <[email protected]>
Newsgroups gmane.comp.web.webobjects.eof
Organization Global Village Consulting, Inc.
Message-ID <[email protected]>
One version of the Change notification framework is here:
http://www.wirehose.com/download/

And "ERChangeNotificationJMS contributed by Tatsuya Kawano. Adaptation of David 
Neuman's change notification framework except instead of having every 
WOApplication broadcast to every other WOApplication using a WOHTTPConnection 
this implementation uses a JMS publish/subscribe system. This version uses 
Exolab's OpenJMS implementation although it should be fairly straight forward to 
adapt to any other JMS provider." here:
http://wonder.sourceforge.net/
(You have to poke around a bit...)


Enjoy!

Chuck



Pierre Bernard wrote:

> Hi!
> 
> Where did you read that EOObjectStoreCoordinators were meant to 
> communicate?
> 
> AFAI, having separate EOObjectStoreCoordinators produces EOF stacks as 
> separate as having them running in separate applications. Only 
> EOEditingContexts belonging to the same EOF stack keep sync. There is 
> however a framework that's talked about regularly on this list that 
> allows for change notification among different applications. The names 
> escapes me, but I'm sure others will point you to it.
> 
> Then again, why is change notification so important to you? Wouldn't a 
> good/agressive refreshing strategy do the job? E.g. in an application 
> with a search-list-detail workflow you could create a fresh editing 
> context each time you hit a search form. Create that editing context 
> with a short fetch timestamp lag and you'll always be seeing fresh data.
> 
> Pierre.
> 
> On Thursday, February 6, 2003, at 09:14 PM, <[email protected]> 
> wrote:
> 
>> I have this problem:
>>
>> I create an EOObjectStoreCoordinator per session.
>> Then, I create an editingcontext associated to the 
>> objectstorecoordinator that i created before.
>>
>> The problem is that when in a session I change an eo object, the other 
>> session never gets a notification of the change, and so it has 
>> different data. Webobjects documentation says that 
>> EOObjectStoreCoordinators mantain persistence between them, but I dont 
>> see it. i'm i missing something here? how can i make 
>> objectstorecoordinators notify updates between them?????
>>
>> thanks
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> 
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-- 

Chuck Hill  -  Village Idiot Savant        [email protected]
Global Village Consulting Inc.             http://www.global-village.net
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