Have you looked at fireUntilHalt? From: rules-users-boun...@lists.jboss.org [mailto:rules-users-boun...@lists.jboss.org] On Behalf Of Makewise - Vitor Rui Mendonça Sent: 17 March 2011 11:20 To: 'Rules Users List' Subject: Re: [rules-users] Basic doubt regarding Drools Fusion - @expires
Edison, first of all, thanks for your quick reply!
Those initial words caught my attention, although: “By default, Drools does not
start any internal thread”…
What do you mean “by default”?
I know there are ways to force the event to be expired but I’m looking for a
solution that doesn’t involve to write new rules.
For example, I’m using this kind of solution:
declare A
@role( event )
@expires( 1h )
end
rule "internal - expiring A"
timer(int:1h)
when
$a : A() from entry-point "incoming"
then
retract($a);
end
Although this solution works (from Drools 5.1), I’m forced to write a rule to
expire an event that’s supposed to be expired initially.
There’s a simpler way to do this? I’m thinking correctly?
Once again, thanks!
Vítor Mendonça Moreira
Analista / Programador
Direcção de Investigação e Desenvolvimento
Rua Dr. Francisco Sá Carneiro, nº. 4 r/c esq.
2500 - 206 - Caldas da Rainha
Tel: (+351) 262 832 196
Fax: (+351) 262 186 455
Web: www.makewise.pt<http://www.makewise.pt>
Uma empresa: Grupo Sousa Pedro<http://www.sousapedro.com>
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From: rules-users-boun...@lists.jboss.org
[mailto:rules-users-boun...@lists.jboss.org] On Behalf Of Edson Tirelli
Sent: quarta-feira, 16 de Março de 2011 18:38
To: Rules Users List
Subject: Re: [rules-users] Basic doubt regarding Drools Fusion - @expires
By default, Drools does not start any internal thread, so that you can embed
it in non-multithread applications or in JEE containers. That means that the
actual release of events in such cases depends on triggers. In your example,
after 1h has passed, whenever something happens to the session (a new rule is
fired, a new event is inserted, the session clock is advanced, etc), the event
will be expired as part of the action. Remember though that it only happens
when running in STREAM mode. In CLOUD mode, event garbage collection does not
make sense and will not happen.
Edson
2011/3/16 Makewise - Vitor Rui Mendonça
<vitor.mendo...@brisa.pt<mailto:vitor.mendo...@brisa.pt>>
Hi all!
I’ve got a really basic doubt… I’ve read several documentation regarding it but
I think I need some advice here…
Imagine that I have an event:
declare A
@role( event )
@expires( 1h )
end
On my Java code, I call “fireAllRules()” method every time that I put an event
into the working memory.
My doubt: When does event A expires?
a) One hour after it was inserted (time-based and without the
“fireAllRules()” method call) or
b) by calling “fireAllRules()” method (event-based)
T.I.A.
Vítor Mendonça Moreira
Analista / Programador
Direcção de Investigação e Desenvolvimento
Rua Dr. Francisco Sá Carneiro, nº. 4 r/c esq.
2500 - 206 - Caldas da Rainha
Tel: (+351) 262 832 196
Fax: (+351) 262 186 455
Web: www.makewise.pt<http://www.makewise.pt>
Uma empresa: Grupo Sousa Pedro<http://www.sousapedro.com>
[cid:image002.jpg@01CBE496.891C1F20]
________________________________
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mesma por engano, fica notificado que é estritamente proibido reproduzir,
guardar ou distribuir toda ou qualquer parte desta mensagem e ficheiros
anexos.Por favor reencaminhe a mensagem para o responsável pelo seu envio ou
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The information contained in this message, and any files attached, is
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--
Edson Tirelli
JBoss Drools Core Development
JBoss by Red Hat @ www.jboss.com<http://www.jboss.com>
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