I'm trying to fire a rule using in the LHS a global variable. Although I've
fixed HasLHS.java ,Jess 6.0b1 version, as reported in the answer of Steve's
e-mail, Jess shows the message "First use of variable negated: ".
I've tried Jess 6.1a1 binary code too, but the only way that I've found
success is using local variable instead of global in the LHS.
The code is like that:
(deftemplate foo(slot id))
(defglobal ?*DJ1* = DJ1)
;(bind ?DJ1 ?*DJ1*)
(defrule teste
;?DJ_local <- (foo(id DJ1))
?DJ_global <- (foo(id ?*DJ1*))
=>
(printout t "GLOBAL is" ?*DJ1* crlf)
)
(reset)
(assert (foo(id DJ1)))
(run)
Sorry if this subject has been discussed before.
Thanks in advance,
Alceu
-----Original Message-----
From: [EMAIL PROTECTED] <[EMAIL PROTECTED]>
To: [EMAIL PROTECTED] <[EMAIL PROTECTED]>
Date: Sexta-feira, 1 de Mar�o de 2002 11:33
Subject: Re: JESS: First use of variable negated
>Hi Steve,
>
>This is a known regression in Jess 6.0; it was first reported by Simon
>Hamilton. It's fixed in the next release, which should be next week.
>
>Here's a patch for 6.0: change line 189 in jess/HasLHS.java from
>
> if (name.startsWith("*"))
> ; // <--- THIS LINE
>
>to
> if (name.startsWith("*"))
> continue;
>
>
>I think Steve Webster wrote:
>[Charset iso-8859-1 unsupported, filtering to ASCII...]
>> All,
>>
>> I'm encountering a "First use of variable negated" error that I can not
find
>> an explanation for in the documentation or this list's mail archive. In
>> summary, when first referencing a global variable in a predicate under
Jess
>> 6.0, a corresponding error is thrown.
>>
>> The offending code is:
>>
>> (defglobal ?*mti* = "Recon_PhaseLine")
>>
>> (deftemplate foo
>> (slot instanceName)
>> )
>>
>> (defrule create-salute-report-state
>> (foo (instanceName ?*mti*))
>> =>
>> (printout t "bar")
>> )
>>
>> However, when I replace the predicate, "(foo (instanceName ?*mti*)),"
with
>> what I believe to be the equivalent, "(foo (instanceName ?i&:(eq ?i
>> ?*mti*)))," no error results, and the clp file compiles.
>>
>> Given how basic this scenario is, I can not help but think I have missed
>> something obvious. Can anyone tell me why the initial code gives an error
on
>> compilation?
>>
>> Thanks in advance for your help,
>>
>> Steve
>>
>>
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>
>
>
>---------------------------------------------------------
>Ernest Friedman-Hill
>Distributed Systems Research Phone: (925) 294-2154
>Sandia National Labs FAX: (925) 294-2234
>Org. 8920, MS 9012 [EMAIL PROTECTED]
>PO Box 969 http://herzberg.ca.sandia.gov
>Livermore, CA 94550
>
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