Much better now.....
Thanks.....
E
Wolfgang Laun wrote:
>
> Notice that updates via (call ....) to the Java object require that the
> bean does property change notification, as described in section 5.3.3,
> to update the shadow fact.
>
> ; class Host with attributes firstName, lastName
> (deftemplate Host (declare (from-class at.laune.project.Host)))
>
> (reset)
> (bind ?h1 (new at.laune.project.Host "John" "Smith"))
> (add ?h1)
> (bind ?h2 (new at.laune.project.Host "Paul" "Jones"))
> (add ?h2)
>
> (defrule find1
> (declare (no-loop TRUE))
> ?hostFact <- (Host (OBJECT ?hostObj) (lastName "Smith"))
> =>
> (printout t "fact 1 - firstName = " (fact-slot-value ?hostFact
> firstName) crlf)
> (call ?hostObj setFirstName "George")
> (printout t "fact 1 - firstName = " (fact-slot-value ?hostFact
> firstName) crlf)
> )
>
> (defrule find2
> (declare (no-loop TRUE))
> ?hostFact <- (Host (lastName "Jones"))
> =>
> (printout t "fact 2 - firstName = " (fact-slot-value ?hostFact
> firstName) crlf)
> (modify ?hostFact (firstName "Richard"))
> (printout t "fact 2 - firstName = " (fact-slot-value ?hostFact
> firstName) crlf)
> )
>
> (printout t "Java object 1 - firstName = " (call ?h1 getFirstName) crlf)
> (printout t "Java object 2 - firstName = " (call ?h2 getFirstName) crlf)
> (run)
> (printout t "Java object 1 - firstName = " (call ?h1 getFirstName) crlf)
> (printout t "Java object 2 - firstName = " (call ?h2 getFirstName) crlf)
>
>
> vanhaabe wrote:
>
>>Still no progress. Can't bind OBJECT, error I'm getting is "Undefined
>>function OBJECT".
>>Can you please elaborate to call "OBJECT" in cpl file.
>>
>>Thanks,
>>E
>>
>>Wolfgang Laun wrote:
>>
>>
>>>The object behind the shadow fact is available in the slot OBJECT.
>>>Simply bind that slot to a Jess variable:
>>> (MC ... (OBJECT ?mcObj))
>>> ---
>>> (call ?mcObj setPassed TRUE)
>>>
>>>If MC is sufficiently beanish you have a slot Passed and can use modify
>>>with some variable bound to the fact which will update the Java object;
>>>but if you call the method: does it trigger the update of the shadow
fact?
>>>
>>>The Jess manual's section 5.3 contains more useful hints on shadow facts.
>>>-WL
>>>
>>>vanhaabe wrote:
>>>
>>>
>>>
>>>>Hi,
>>>>
>>>>This is probably easy onem, but I can't figure it out. I need to do
>>>>
>>>>
>>object
>>
>>
>>>>validation, and have flag "passed" set from within my rule.
>>>>_________________________________________________________
>>>>This is my cpl file
>>>>(import com.mycompany.yadda.yadda.MC)
>>>>(deftemplate MC(declare (from-class MC)))
>>>>(defrule mcrule
>>>> "Rule 11"
>>>> (MC {fg == "P"})
>>>> =>
>>>> (printout t "Rule 11" crlf)
>>>> (call ?MC setPassed TRUE)
>>>>)
>>>>_______________________________________________________________
>>>>
>>>>and this is how I call it from Java:
>>>>engine.resetToMark(marker);
>>>> MC mc = new MC();
>>>> mc.setfg("P");
>>>>
>>>> MC mc1 = new MC();
>>>> mc1.setfg("D");
>>>>
>>>>
>>>> engine.add(mc);
>>>> engine.add(mc1);
>>>>
>>>> engine.run();
>>>> return engine.getObjects(new Filter.ByClass(MgmtChars.class));
>>>>_____________________________________________________________________
>>>>Rules are validated correctly, but when it executes method setPassed it
>>>>throws exceptions: "No such variable MC", and that is correct. I simply
>>>>don't know how to reference/access object that rule is currently
executed
>>>>on. If you can shed some light on it that would be really appreciated.
>>>>
>>>>Thanks,
>>>>Ed
>>>>--
>>>>View this message in context:
>>>>
>>>>
>>http://www.nabble.com/Jess-newbie-does-not-know-how-to-....-tp15837006p15837006.html
>>
>>
>>>>Sent from the Jess mailing list archive at Nabble.com.
>>>>
>>>>
>>>>
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>>>
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>>
>>--
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http://www.nabble.com/Jess-newbie-does-not-know-how-to-....-tp15837006p15853415.html
>>Sent from the Jess mailing list archive at Nabble.com.
>>
>>
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>
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