[tohu-users] Stateless/stateful servlet in Tohu

[Nicolas Martignole]

Hi Damon, Hi Michael

Thanks for your feedback.

I'll try to see if it would be possible to enhance the Stateful Server so
that 2 URLs are handled
with 2 differents Agents.

My use case is that 2 differents Portlets, in the same WAR, must be able to
use 2 differents
set of rules. And so far, as you explained, there's a single Questionnaire
per HTTP Session.

Not a big issue, we might be able to find a solution, based on the URI for
instance.

I'll try to see if I can adapt-it
:-)
Thanks

Regards, Nicolas

(yes, from Paris/France ;-) )

2010/2/27 Damon Horrell <Damon.Horrell at solnetsolutions.co.nz>

> I think the problem though is that there is only one session so when you
> hit the second url, then nothing happens because you already have a session
> established.  (The branching-example has 3 different agents and I had to
> delete the knowledgeSession when switching between them otherwise I'm pretty
> sure it just stayed with the original one.)
>
> In a portal environment, the different portlets almost need to behave like
> different users.
>
> Currently Tohu only supports there being a single Questionnaire per
> session, so we'd either have to enhance that so that there were two
> independent ones within the session for each portlet, or change the
> execution server so that each agent url has a different knowledgeSession
> behind it (could this be a simple configuration option cos the current
> behaviour is also useful).
>
> Another approach (which Nicholas could try) might be just to have a single
> agent and a single Questionnaire for the whole application and write some
> custom javascript so that each portlet only fetched the parts of the
> Questionnaire that it should display (probably using Groups).  i.e. it would
> be a bit like a 2-page Questionnaire but where each page was actually each
> portlet.  I haven't really thought this through fully though so this might
> not acually work easily.
>
> Damon
>
> -----Michael Neale <michael.neale at gmail.com> wrote: -----
>
> To: Damon Horrell <Damon.Horrell at solnetsolutions.co.nz>
> From: Michael Neale <michael.neale at gmail.com>
> Date: 02/27/2010 01:21PM
> cc: Nicolas Martignole <nicolas at touilleur-express.fr>,
> tohu-users at lists.jboss.org
> Subject: Re: [tohu-users] Stateless/stateful servlet in Tohu
>
>
> Yes different URLs should result in different agents being loaded (each
> will have their own config, so there has to be a matching config file for " sample2".
>
>
> There was some talk around stateless - the idea being that all
> question/answer state is kept on the client and passed as needed (say in a
> cookie) and this could work in theory for very small amounts of data.
>
> On Sat, Feb 27, 2010 at 10:50 AM, Damon Horrell < Damon.Horrell at solnetsolutions.co.nz
> > wrote:
>
>> Hi Nicolas,
>>
>> It's good to see someone on the other side of the world using Tohu :-)
>>
>> Tohu requires that you use the stateful session because only changes are
>> sent back and forth between the client and server, and so that state needs
>> to be maintained on the server.  Stateless would be useful for a scenario
>> where the rules are just doing some sort of one-off calculation based on the
>> inputs provided.
>>
>> Michael will need to answer re whether the execution server is able to run
>> 2 agents simultaneously and how to to that.  In the meantime, you could work
>> around this problem by creating a separate war file for each and deploying
>> them both to your app server.  I have had a number of Tohu applications
>> running simultaneously this way, which is exactly what you need for use
>> within a portal.
>>
>> Regards, Damon
>>
>>
>> ----- tohu-users-bounces at lists.jboss.org wrote: -----
>>
>> To: tohu-users at lists.jboss.org
>> From: Nicolas Martignole < nicolas at touilleur-express.fr >
>> Sent by: tohu-users-bounces at lists.jboss.org
>> Date: 02/27/2010 05:42AM
>> Subject: [tohu-users] Stateless/stateful servlet in Tohu
>>
>>
>> Hi Michael
>>
>> JBoss Tohu is really a great project. I worked on a Grails similar project
>> few months ago, and I was really happy to discover Tohu later.
>>
>> My first question is about the Stateless/stateful URL and Servlet in Tohu
>> implemented in Scala.
>>
>> I understood how to close a session with the URI and dispose-session
>> in stateful mode. However, and because I'm a beginner with Scala,
>> what are the main differences between the stateless and the stateful
>> servlet
>> in JBoss Tohu ?
>>
>> My Portlet has 2 view modes : normal and maximized. Each view mode
>> is in fact a simple JSP. I oberved that if I use the stateful mode, and
>> I try to load 2 separates context/scenarion (with /stateful/sample1 and
>> /stateful/sample2)
>> then the 2nd state is never loaded.
>>
>> I'd like to understand a little bit more this part of Tohu
>>
>> Thanks for your help, and for the great work
>>
>> Nicolas
>>
>>
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>
>
> --
> Michael D Neale
> home: www.michaelneale.net
> blog: michaelneale.blogspot.com
>
>
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