[rules-users] Multi-user architecture of Drools Web Service.

[tom ska]

Well, I will explain my architecture as well as I can:

- I created "Dynamic Web Project" with Eclipse based on AXIS1.4.1
- I also added Drools Runtime to a project
- In class I have  KnowledgeBase kbase attribute
- Each time I use fn_Conclude function, I create new
StatefulKnowledgeSession ksession = kbase.newStatefulKnowledgeSession() and
use fireAllRules method.

I understand, that user who uses fn_Conclude will get his own results, but I
don't get how using StatefulKnowledgeSession can I guarantee that user, who
added his facts will get results only from facts he added. I see problem in
connecting facts to user,but meybe that's not good point of view. Facts
adding is done by ksession object (each user has his own), but I want to
have this web service with states... Then user can add his own facts, than
do something else, then process only his facts. Between adding and
processing, I want other user to do this same. I want Web Service to wait
for each user after adding by him some facts.

I hope, it is clear for You (my english... :/ )

regards,
tom.


2010/8/20 Mauricio Salatino <salaboy at gmail.com>

> It depends on how are you exposing web services or the component behind
> those web services..
> If you use a Stateful Session Bean, this component will do all the work for
> you. But if your services are stateless by nature, you need to implement the
> mechanism. You can implement this mechanism in two ways: In messages (adding
> a session id that goes and come back with the response) or in server side
> with a client id.
>
>
> 2010/8/20 tom ska <tiberium.linux at gmail.com>
>
>> Thanks Esteban. I thought it could be a solution too, but I am not
>> experienced (and my knowledge is not big either) in solving such a problems.
>>
>> If I would do, like You said - am I to write all communication between web
>> service and client too? In web programming with browser, I have cookies. In
>> them, I could keep some session ID. But using SOAP, I have to write this
>> mechanisms alone, yes? Can AXIS do it for me? Or some other tool?
>>
>> regards,
>> tom.
>>
>>
>> 2010/8/20 Esteban Aliverti <esteban.aliverti at gmail.com>
>>
>> A basic solution could be to have each user identified with an unique id.
>>> Then, in the server side you could have different ksessions (and not kbases)
>>> for each user.
>>>
>>> Best,
>>>
>>> XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX
>>>
>>> Esteban Aliverti
>>> - Developer @ http://www.plugtree.com
>>> - Blog @ http://ilesteban.wordpress.com
>>>
>>>
>>> 2010/8/20 tom ska <tiberium.linux at gmail.com>
>>>
>>>>  Hi,
>>>> what I have is SOAP Web Service with two methods: fn_AddFacts, and
>>>> fn_Conclude. I defined special XML implementation to send various fact's
>>>> types via SOAP. Model is defined in DRL/Guvnor - and rules too.
>>>>
>>>> So now, I can add some facts (web service creates them using Drools
>>>> "reflection" API) to knowledge base. And then use fn_Conclude method, to
>>>> fire "fireAllRules" method and get response with results. But.....
>>>>
>>>> What if now I have 100 users, and I don't want their's facts to
>>>> interfere each other? I want, to use Drools to conclude for different users.
>>>> I want to use this same rules, but on different knowledge bases (each user
>>>> has own knowledge base of his facts).
>>>>
>>>> Please help me, how to solve this problem... I am new in JAVA EE, and I
>>>> don't understand some elementary issues well. (But I am trying to understand
>>>> them :D )
>>>>
>>>> regards,
>>>> tom.
>>>>
>>>> _______________________________________________
>>>> rules-users mailing list
>>>> rules-users at lists.jboss.org
>>>> https://lists.jboss.org/mailman/listinfo/rules-users
>>>>
>>>>
>>>
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>>
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>
>
> --
>  - CTO @ http://www.plugtree.com
>  - MyJourney @ http://salaboy.wordpress.com
>  - Co-Founder @ http://www.jbug.com.ar
>
>  - Salatino "Salaboy" Mauricio -
>
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