2:04 a.m.
Hi all,
i'm quiet new in drools (a french speaking so i appologise for my english
mistakes) and i'm surprise by the folowing problem
in drools example i found this code ...
Example 3.14. Return Value operator
Person( girlAge : age, sex == "F" )
Person( age == ( new Integer(girlAge.intValue() + 2) ), sex == 'M' )
This let me think that i can use method of an assigned variable in the
equality test
this my rule file
package be.labocollard.server.rules ;
import java.lang.Integer;
import java.lang.Double;
import be.labocollard.server.types.HumanSexType;
import be.labocollard.server.entities.Result;
import be.labocollard.server.entities.Resultat;
import be.labocollard.server.entities.Prestation;
import be.labocollard.server.entities.PrestationFacturable;
import be.labocollard.server.entities.Utilisateur;
rule "asserteResultatAndPrestation"
when
PrestationFacturable ( $resultat : resultat , $prestation : prestation)
then
assert ( $resultat );
assert ($prestation);
end
rule "findRelevantResult"
when
$resultat : Resultat()
eval($resultat.getResults().size()>0)
then
assert($resultat.getResults().iterator().next());
end
rule "testPsaId"
when
$prestation : Prestation(id == "psaId")
$prestationFacturable : PrestationFacturable (prestation==$prestation,
$resultat : resultat)
$result : Result (doubleValue < (new Double(12)))
Resultat (id == $resultat.getId(), results contains $result )
>> this sentence makes problem ...
>> and i would like to avoid eval
>> #eval ($resultat.getId()==id &&
$resultat.getResults().contains($result) )
Utilisateur (age < (new Integer(55))) || Utilisateur (sex !=
HumanSexType.MALE)
then
retract($prestationFacturable);
end
Is there a drools guru to explain my misunderstanding ????
thanks a lot
and thanks to drools developpers for those wonderfull tools
JLL
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2:03 p.m.
Hi there,
Best to understand your needs before suggesting, but working simply on
syntax, if you are using trunk, you can do this:
rule "findRelevantResult"
when
$resultat : Resultat( ( results.size() > 0 ) )
then
end
rule "testPsaId"
when
$prestation : Prestation(id == "psaId")
$prestationFacturable : PrestationFacturable
(prestation==$prestation, $resultat : resultat)
$result : Result ( doubleValue < 12 )
Resultat ( this == $resultat , results contains $result )
Utilisateur ( ( age < 55 || sex != HumanSexType.MALE) )
then
end
Ok, now I made things confuse right? :) Next step for us to get rid of
the double "(" when using only a single predicate.
Anyone willing to help document and explain the above?
[]s
Edson
2007/4/6, JLL <jll(a)labocollard.be>:
Hi all,
i'm quiet new in drools (a french speaking so i appologise for my english
mistakes) and i'm surprise by the folowing problem
in drools example i found this code ...
Example 3.14. Return Value operator
Person( girlAge : age, sex == "F" )
Person( age == ( new Integer(girlAge.intValue() + 2) ), sex == 'M' )
This let me think that i can use method of an assigned variable in the
equality test
this my rule file
package be.labocollard.server.rules ;
import java.lang.Integer;
import java.lang.Double;
import be.labocollard.server.types.HumanSexType;
import be.labocollard.server.entities.Result;
import be.labocollard.server.entities.Resultat;
import be.labocollard.server.entities.Prestation;
import be.labocollard.server.entities.PrestationFacturable;
import be.labocollard.server.entities.Utilisateur;
rule "asserteResultatAndPrestation"
when
PrestationFacturable ( $resultat : resultat , $prestation
: prestation)
then
assert ( $resultat );
assert ($prestation);
end
rule "findRelevantResult"
when
$resultat : Resultat()
eval($resultat.getResults().size()>0)
then
assert($resultat.getResults().iterator().next());
end
rule "testPsaId"
when
$prestation : Prestation(id == "psaId")
$prestationFacturable : PrestationFacturable
(prestation==$prestation,
$resultat : resultat)
$result : Result (doubleValue < (new Double(12)))
Resultat (id == $resultat.getId(), results contains
$result )
>>> this sentence makes problem ...
>>> and i would like to avoid eval
>>> #eval ($resultat.getId()==id &&
$resultat.getResults().contains($result) )
Utilisateur (age < (new Integer(55))) || Utilisateur (sex
!=
HumanSexType.MALE)
then
retract($prestationFacturable);
end
Is there a drools guru to explain my misunderstanding ????
thanks a lot
and thanks to drools developpers for those wonderfull tools
JLL
--
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http://www.nabble.com/explanation-on-drl-usage-tf3535518.html#a9868635
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--
Edson Tirelli
Software Engineer - JBoss Rules Core Developer
Office: +55 11 3124-6000
Mobile: +55 11 9218-4151
JBoss, a division of Red Hat @ www.jboss.com
12:32 a.m.
JL Livemont wrote:
hi
thanks for this quick reply
i don't know if there is the same expression in english so i traduce word
by word
I draw you my hat
'this' is very impressive :^)
i will try it after the week end ...
for the rest i changed w
my rules to avoid or in predicate ... i split it in 2 rules ...
i'll let you know about the result test ...
see you soon (i will use drools in many parts of a big software
development, so i'll have probalbly many discussion subjects to submit
...)
JLL
Edson Tirelli-3 wrote:
Resultat ( this == $resultat , results contains $result )
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