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From emanu...@mengozzi.com
Subject Re: Keeping hessian servlet session active with a rop client
Date Tue, 14 Sep 2010 15:31:20 GMT
I'll look into a dummy query to replace getEntityResolver

Thanks for the suggestion

> Nothing that is built in for this purpose, and IIRC that
> 'getEntityResolver' approach may no longer work, as we are caching it now
> on the client. You can issue a simple query instead I guess. Something
> that executes quickly and doesn't bring back any data. It may even end up
> having better performance than 'getEntityResolver'.
>
> Also I am thinking we should look at adding a seamless reconnect ability
> to the Hessian transport. As in most cases users won't maintain
> server-side state between requests, so abandoning a session and creating a
> new one shouldn't be a big deal if that's transparent to the users.
>
> Andrus
>
>
> On Sep 14, 2010, at 7:34 AM, emanuele@mengozzi.com wrote:
>
>> I've a swing application using cayenne ROP, i had problem with session
>> timeout of the hessian servlet, so far in order to avoid long session
>> timeout, i implemented a thread preforming the following:
>>   ....
>>
>>    DataChannel channel;
>>   ....
>>
>>    public void run() {
>>
>>
>>
>>
>>        for(;;)
>>        {
>>
>>            this.channel.getEntityResolver();
>>
>>            try {
>>                Thread.sleep(120000);
>>            } catch (InterruptedException ex) {
>>                Logger.getLogger(Instance.class.getName()).log(Level.SEVERE,
>> null, ex);
>>            }
>>        }
>>    }
>>
>> it issue a bootstrap message every 12 seconds.
>>
>>
>> I didn't find a better way to doit, using cayenne 2.
>>
>> I wonder, since im planning to switch the application to cayenne 3, for
>> both Nested Context and Paginated queries for ROP, is there a better way
>> to "ping" Hessian servlet to keep session active?
>>
>>
>>
>>
>>
>>
>
>
>



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