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Re: JESS: rule problems

by Joao Antunes Mourao :: Rate this Message:

Very well,

When I say is not working, what I mean is that the rule is never fired
and should fire, because I have facts in the working memory for that.
Anyway, I give you the really code of the rule and the facts that are in
the database.

For a total of 5 facts in module MAIN.
f-0 (MAIN::initial-fact)
f-1 (MAIN::Entity (absoluteSpeed 11.905696218853354) (allRecords
<Java-Object:java.util.Vector>) (class <Java-Object:java.lang.Class>)
(entityType <Java-Object:tools.types.EntityType>) (id 1) (intentionType
<Java-Object:tools.types.IntentionType>) (lastRecord
<Java-Object:engines.InputDataEngine.KinematicsRecord>) (manoeuvre
<Java-Object:tools.types.Manoeuvre>) (name "UNKNOWN") (position
<Java-Object:tools.modules.Position>) (speed
<Java-Object:tools.modules.Speed>) (time 1.2071231184415078E9)
(trackStatus <Java-Object:tools.types.TrackStatus>) (OBJECT
<Java-Object:tools.modules.Entity>))
f-2 (MAIN::Entity (absoluteSpeed 8.979319067861903) (allRecords
<Java-Object:java.util.Vector>) (class <Java-Object:java.lang.Class>)
(entityType <Java-Object:tools.types.EntityType>) (id 3) (intentionType
<Java-Object:tools.types.IntentionType>) (lastRecord
<Java-Object:engines.InputDataEngine.KinematicsRecord>) (manoeuvre
<Java-Object:tools.types.Manoeuvre>) (name "UNKNOWN") (position
<Java-Object:tools.modules.Position>) (speed
<Java-Object:tools.modules.Speed>) (time 1.2071231240553708E9)
(trackStatus <Java-Object:tools.types.TrackStatus>) (OBJECT
<Java-Object:tools.modules.Entity>))
f-3 (MAIN::Area (class <Java-Object:java.lang.Class>) (id 10) (name
"Area_1") (numberOfPoints 4) (polygon <Java-Object:java.awt.Polygon>)
(OBJECT <Java-Object:tools.modules.Area>))
f-4 (MAIN::Area (class <Java-Object:java.lang.Class>) (id 11) (name
"Area_2") (numberOfPoints 4) (polygon <Java-Object:java.awt.Polygon>)
(OBJECT <Java-Object:tools.modules.Area>))
For a total of 5 facts in module MAIN.

*(defrule entity-out-side-lane
"if the entity is sailing outside ot the sea-lane"
(Area {name == "Area_1"} (OBJECT ?Area1))
(Area {name == "Area_2"} (OBJECT ?Area2))
(Entity (OBJECT ?Entity &:(?Area1 entityIsOutsideArea ?Entity) &:
(?Area2 entityIsOutsideArea ?Entity)))
=>
(add (new Anomaly "entity-out-side-lane" 24 ?Entity "if the entity
is sailing outside ot the sea-lane" 1)))
*
Now if you look to the facts f3 and f4, you will see that I have two
areas, one named "Area_1", other "Area_2". Fact f1 and f2 are two
entities. One of the entities is both outside of "Area_1" and "Area_2",
so I guess the rule should be fired. But don't . Any ideas?

Regards,

Joao

Dusan Sormaz wrote:

> Joao,
>
> can you show the complete rule? Your code snippet is missing a
> parenthesis at the end of the first Area line.
>
> Also when you say: "it is not working" it is not enough to understand
> the possible error. show either error messages or explain what is
> shown, for example, does error show when you load (compile) rules, or
> when you try to run them.
>
> Dusan Sormaz
>
> At 05:39 AM 4/1/2008, you wrote:
>
>> Hello,
>>
>> My question is about if it is possible to assign the same class of
>> objects several times in the same rule. I mean, let say i have a class
>> "Area" and I have multiple facts containing objects of the class "Area"
>> in the working memory. Can I do something like this:
>>
>> (defrule
>> (Area {name=="area1"}(OBJECT ?Area1)
>> (Area {name=="area2"}(OBJECT ?Area2)
>> ....
>> and then I can work with these objects. I tested and is not working. It
>> seems that jess refuses to assign two times the same class in the rule.
>> Of course I had import my class "Area" to jess, it can recognize it. Can
>> you help me about this?
>>
>> Thanks,
>>
>> Joao Mourao
>>
>> --------------------------------------------
>> Unclassified email
>>
>>
>>
>>
>>
> *********************************************************************
> * Dusan Sormaz PhD, Associate Professor
> * Ohio University
> * Department of Industrial and Systems Engineering
> * 277 Stocker Center, Athens, OH 45701-2979
> * phone: (740) 593-1545
> * fax: (740) 593-0778
> * e-mail: sormaz@...
> * url: http://www.ent.ohiou.edu/~sormaz
> <http://www.ent.ohiou.edu/%7Esormaz>
> *********************************************************************
>

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