<meta content="text/html; charset=UTF-8" http-equiv="Content-Type">
<div class="moz-cite-prefix">Hello again.<br>
<br>
It seems clear that too many salience levels would make it all
worse !<br>
<br>
My ruleset executes over a simple list of initial facts, and
proceeds more or less as you say in three phases :<br>
<br>
1) Analise initial facts using several deduced facts to make
intermediary conclusions implemented as locally declared types.<br>
<br>
2) Consolidate the scattered produced facts to build seven main
business rules : here is where I need to gather all the facts into
a unique collection. Depending on each of the seven rules, the
result may use a simple input fact, or, at the opposite, different
collections of temporary facts...<br>
<br>
3) At the end, for each input fact, generate a global decision
using the seven rules, and output it into a global map.<br>
<br>
For that, I think that it may be rather reasonable [:)] setting 3
salience levels representing the three main steps of the rule
system.<br>
<br>
I have had a look to the activation groups, but I don't think it
could match this current need. Moreover this would be more
intrusive since such a way the Java code should knows the layered
structure of the rules. At this time the application code just
puts the initial facts and extract the resulting map to produce a
JSON like object to be written into a Mongo base...<br>
<br>
Thanks a lot for your help. Any new advice is welcome !<br>
<br>
Best regards.<br>
<br>
<pre class="moz-signature" cols="72">Ephemeris Lappis</pre>
Le 21/04/2014 17:48, laune [via Drools] a écrit :<br>
</div>
<blockquote style='border-left:2px solid #CCCCCC;padding:0 1em'
cite="mid:CANaj1LcJupvVRuMvE6R_6uMdKeAozMG+r-sGEqPqddNOyZbkxw@mail.gmail.com"
type="cite"> I recommend at most 3 levels of salience, and only if
you have a
<br>
very limited scenario of insert / fire.
<br>
<br>
Alternatively, you can use agenda groups.
<br>
<br>
If I understand you correctly, you have some rules that execute
<br>
"Before" and others that should execute "After". In your .drl,
<br>
<br>
activation-group "Before"
<br>
rule ... when ... then ... end ... rule ... when ... then ... end
<br>
activation-group "After"
<br>
rule ... when ... then ... end ... rule ... when ... then ... end
<br>
<br>
You can set (the group "Before" before you insert facts, call
<br>
fireAllRules, set "After" and fire again; then start over again. -
See
<br>
the Expert manual for some more about activation groups.
<br>
<br>
Setting the agenda group from Java takes a little digging in the
API doc:
<br>
session.getAgenda().getAgendaGroup( "Before" ).setFocus();
<br>
<br>
-W
<br>
<br>
<br>
<br>
On 21/04/2014, Ephemeris Lappis <<a moz-do-not-send="true"
href="/user/SendEmail.jtp?type=node&node=4029304&i=0"
target="_top" rel="nofollow" link="external">[hidden email]</a>>
wrote:
<div class="shrinkable-quote"><br>
> Hello.
<br>
>
<br>
> Thanks for this advice.
<br>
>
<br>
> I've tried it with a small test case, and it actually works
fine : the
<br>
> collecting rule seems to be fired at the end.
<br>
>
<br>
> Nonetheless, I'm not confident at all with salience, since
in my real
<br>
> use case I have many rules before and after that, and I
worry that
<br>
> salience might move the problem elsewhere, and values must
be set to all
<br>
> of them to ensure they're all executed according to the
expected order.
<br>
>
<br>
> At this moment, the rules before the collecting rule also
produce facts
<br>
> that are expected by the rules that follow it, and, I
suppose, it's for
<br>
> that reason that all the ending part of the job is executed
after the
<br>
> correct collection of the intermediary results.
<br>
>
<br>
> Another alternative ?
<br>
>
<br>
> Thanks again.
<br>
>
<br>
> Regards
<br>
>
<br>
>
<br>
>
<br>
> Ephemeris Lappis
<br>
>
<br>
> Le 21/04/2014 13:11, laune [via Drools] a écrit :
<br>
>> This is one of the (rare) cases where I'd advocate
salience.
<br>
>>
<br>
>> rule "Collect results when complete"
<br>
>> salience -999999
<br>
>> when
<br>
>> $all : List from collect(Result())
<br>
>> then
<br>
>> ...do something with $all...
<br>
>> end
<br>
>>
<br>
>> -W
<br>
>>
<br>
>>
<br>
>> On 21/04/2014, Ephemeris Lappis <[hidden email]
<br>
>>
</user/SendEmail.jtp?type=node&node=4029298&i=0>>
wrote:
<br>
>>
<br>
>> > Hello.
<br>
>> >
<br>
>> > I'm looking for the better way to write a rule
that collects data
<br>
>> only when
<br>
>> > they have been all processed.
<br>
>> >
<br>
>> > For example, two input objects classes as facts :
*Data* and
<br>
>> *Category*.
<br>
>> >
<br>
>> > I declare a local type to memorize the result of
the evaluation for
<br>
>> each
<br>
>> > pair of fact.
<br>
>> >
<br>
>> >
<br>
>> >
<br>
>> > Some rule evaluates the Cartesian product of all
*Data* by all
<br>
>> *Category* :
<br>
>> >
<br>
>> >
<br>
>> >
<br>
>> > Now I want to collect all the results, but only
when the previous
<br>
>> rule has
<br>
>> > been fired for all the data.
<br>
>> > Something like :
<br>
>> >
<br>
>> >
<br>
>> >
<br>
>> > Any advice ?
<br>
>> >
<br>
>> > Thanks in advance for your help.
<br>
>> >
<br>
>> > Regards.
<br>
>> >
<br>
>> >
<br>
>> >
<br>
>> > --
<br>
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