[rules-users] Multi threaded rule engine question.

[Nadav Hashimshony]

Got it thanks.
ill create a new statefull session for each run and dispose it after it
completes.



2010/9/28 Michael Anstis <michael.anstis at gmail.com>

> True, thanks Greg.
>
>
> On 27 September 2010 23:57, Greg Barton <greg_barton at yahoo.com> wrote:
>
>> I wouldn't reuse a stateless session.  You could reuse a stateful session
>> and clean up between runs, but session creation is not that expensive. (and
>> easily less expensive than cleanup of a stateful session, mattering on the
>> complexity of your rules)
>>
>> GreG
>>
>> On Sep 27, 2010, at 8:39, Nadav Hashimshony <nadavh at gmail.com> wrote:
>>
>> My rule engine server is multi threaded.
>>
>> in the server main i build a knowledgebase:
>>
>> KnowledgeBuilderConfiguration config =
>> KnowledgeBuilderFactory.newKnowledgeBuilderConfiguration(droolsConf, null);
>> KnowledgeBuilder builder =
>> KnowledgeBuilderFactory.newKnowledgeBuilder(config);
>> builder.add(ResourceFactory.newFileResource("path to drools pkg",
>> ResourceType.PKG);
>>
>> KnowledgeBase knowledgeBase = KnowledgeBaseFactory.newKnowledgeBase();
>> knowledgeBase.addKnowledgePackages(builder.getKnowledgePackages());
>>
>> i have 10 threads that have the following code:
>>
>>
>>
>> thread run method:
>>
>>
>> as long as a Vector has data do:
>>
>> 1. StatelessKnowledgeSession droolsSession=
>> m_droolsKagent.getKnowledgeBase().newStatelessKnowledgeSession();
>> 2. get data object  from a vector
>> 3. create fact model from data
>> 4. droolsSession.insert(facts);
>> 5. droolsSession.fireAllRules();
>> 6. do stuff with the response
>> 7.droosSession.dispose
>> 8.get  next object from vector.
>>
>>
>> Questions:
>> 1. should i create each time the droolsSession? or can i resuse the same
>> one, meaning can i create it in the Thread's constractor?
>>
>> Thanks
>> Nadav.
>> _______________________________________________
>> rules-users mailing list
>> rules-users at lists.jboss.org
>> https://lists.jboss.org/mailman/listinfo/rules-users
>>
>>
>>
>>
>> _______________________________________________
>> rules-users mailing list
>> rules-users at lists.jboss.org
>> https://lists.jboss.org/mailman/listinfo/rules-users
>>
>
>
> _______________________________________________
> rules-users mailing list
> rules-users at lists.jboss.org
> https://lists.jboss.org/mailman/listinfo/rules-users
>
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: http://lists.jboss.org/pipermail/rules-users/attachments/20100928/63ecb483/attachment.html