[jbpm-dev] jbpm and business rule task

[Giovanni Marigi]

for completeness this is the case where I don't want to use an application code but I want to run it only via the bpm console.

Giovanni

----- Messaggio originale -----
Da: "Giovanni Marigi" <gmarigi at redhat.com>
A: "Eric D. Schabell" <erics at redhat.com>
Cc: "jbpm-dev" <jbpm-dev at lists.jboss.org>, "sme-brms" <sme-brms at redhat.com>, sme-jbpm at redhat.com
Inviato: Martedì, 16 aprile 2013 10:02:14
Oggetto: Re: jbpm and business rule task

Hi Eric,
thanks for your reply; 
in my script task I insert the facts before the execution of a business rule task but if I don't fire in such a way the rule engine, the rules are not executed;
when I can use an application code I usually register an Agenda Listener and everything works!

Thanks,
Giovanni


----- Messaggio originale -----
Da: "Eric D. Schabell" <erics at redhat.com>
A: "Giovanni Marigi" <gmarigi at redhat.com>
Cc: "jbpm-dev" <jbpm-dev at lists.jboss.org>, "sme-brms" <sme-brms at redhat.com>, sme-jbpm at redhat.com
Inviato: Martedì, 16 aprile 2013 9:48:56
Oggetto: Re: jbpm and business rule task

Hi, 

If you want to do this form the process itself, you then add a script task to insert the facts into the working memory, with something like this from the customer evaluation demo:

// Insert Person and Request into our session for the rules to use.
insert(person);
insert(request);

If you are doing this from your application code it can be done like this (unit test example):

// setup of a Person and Request.
Person underagedEval = getUnderagedCustomer();
Request richEval = getRichCustomer();
ksession.insert(underagedEval);

// Map to be passed to the startProcess.
Map<String, Object> params = new HashMap<String, Object>();
params.put("person", underagedEval);
params.put("request", richEval);

// Start process		
WorkflowProcessInstance processInstance = (WorkflowProcessInstance) ksession.startProcess("org.jbpm.customer-evaluation", params);
ksession.insert(processInstance);
ksession.fireAllRules();

The rule task is pointing to the rules based on RuleFlowGroup and in the process it will fireAllRules() at this point using the rules associated with the group you give it. If you have not previously inserted the facts into memory then it will not have anything to feed the rules.

Hope this helps?

-- erics


On Apr 16, 2013, at 09:38 , Giovanni Marigi <gmarigi at redhat.com> wrote:

> Hi,
> in case I would like to call a process with business rules tasks via jbpm console, where should I insert the code to fire the rules?
> Should I get the ksession from a kcontest and then call the fireAllRules method? (every time before a rule task?)
> 
> I don't have any custom code to start the process where I could use a stateful session and use one of the two approaches 
> Fire Until Halt
> Agenda & Process Event Listeners
> 
> Moreover why when a process meets a rule task doesn't fire automatically the rules? 
> In my opinion this should be the default behaviour
> 
> Thanks,
> Giovanni
> 
> -- 
> Giovanni Marigi
> Red Hat - JBoss Consultant -
> email: gmarigi at redhat.com
> Mobile: +39 3423175986
> Office: +39 0687502315
> 
> Red Hat Italy
> Via Andrea Doria 41m
> 00192 Roma - Italy
> www.redhat.com
> 
> Prima di stampare, pensa all'ambiente ** Think about the environment before printing
> 


-- 
Giovanni Marigi
Red Hat - JBoss Consultant -
email: gmarigi at redhat.com
Mobile: +39 3423175986
Office: +39 0687502315

Red Hat Italy
Via Andrea Doria 41m
00192 Roma - Italy
www.redhat.com

Prima di stampare, pensa all'ambiente ** Think about the environment before printing

-- 
Giovanni Marigi
Red Hat - JBoss Consultant -
email: gmarigi at redhat.com
Mobile: +39 3423175986
Office: +39 0687502315

Red Hat Italy
Via Andrea Doria 41m
00192 Roma - Italy
www.redhat.com

Prima di stampare, pensa all'ambiente ** Think about the environment before printing