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Subject: RE: JESS: defclass problem
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Thread-Topic: JESS: defclass problem
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From: "Ferreira, Miguel (IT)" <[EMAIL PROTECTED]>
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Hi,
=20
So I got through this by calling the execute command directly, however,
the facts are never asserted.
=20
I define instances this way:
_rulesEngine.store("INSTANCE", fact_);
executeCommand("(definstance " + factType + " (fetch INSTANCE)
dynamic)");
No exceptions are thrown. If I ask for=20
Iterator instances=3D_rulesEngine.listDefinstances();
I get an iterator with all the instances I defined. However
executeCommand("(facts)") tells me I have no facts.
Anyone have an idea of what is going on? This has got me stumped...
Thanks,
Miguel
_____ =20
From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]
On Behalf Of Ferreira, Miguel (IT)
Sent: Wednesday, August 11, 2004 11:12 AM
To: [EMAIL PROTECTED]
Subject: JESS: defclass problem
Hello,
=20
I am having some problems with defclass for inherited classes. I am
using Jess as a library within my Java code. I load and define facts
through Java, through the Rete class.
=20
I have a base fact named BeanFact which most other facts inherit from.
Just before adding a fact to Jess, I first check if that class of fact
has been defclassed, and if not I defclass all of its superclasses (that
are not already defclassed) and then the class of fact itself.
=20
Everything works fine, defclassing children facts of BeanFact for a few
different types and then it fails, with the message:=20
=20
Jess reported an error in routine defclass.
Message: No such parent template: WorkLoadOrch.BeanFact.
at jess.d7.a(Unknown Source)
at jess.Rete.defclass(Unknown Source)
at
WorkLoadOrch.RulesEngineBridge.defClassCheck(RulesEngineBridge.java:56)
at
WorkLoadOrch.RulesEngineBridge.defClassCheck(RulesEngineBridge.java:53)
at WorkLoadOrch.RulesEngineBridge.addFact(RulesEngineBridge.java:69)
at WorkLoadOrch.RulesEngineBridge.addFact(RulesEngineBridge.java:103)
I was debuging and have a call to listDefclasses() and in the Iterator
returned I see the WorkLoadOrch.BeanFact=20
Any suggestions as to what I can do or check? Should I define all the
classes at the start of the program rather than as I use them?=20
Thanks,
Miguel
_____ =20
NOTICE: If received in error, please destroy and notify sender. Sender
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NOTICE: If received in error, please destroy and notify sender. Sender =
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<DIV dir=3Dltr align=3Dleft><SPAN class=3D750005718-11082004><FONT =
face=3DArial=20
color=3D#0000ff size=3D2>Hi,</FONT></SPAN></DIV>
<DIV dir=3Dltr align=3Dleft><SPAN class=3D750005718-11082004><FONT =
face=3DArial=20
color=3D#0000ff size=3D2></FONT></SPAN> </DIV>
<DIV dir=3Dltr align=3Dleft><SPAN class=3D750005718-11082004><FONT =
face=3DArial=20
color=3D#0000ff size=3D2>So I got through this by calling the execute =
command=20
directly, however, the facts are never asserted.</FONT></SPAN></DIV>
<DIV dir=3Dltr align=3Dleft><SPAN class=3D750005718-11082004><FONT =
face=3DArial=20
color=3D#0000ff size=3D2></FONT></SPAN> </DIV>
<DIV dir=3Dltr align=3Dleft><SPAN class=3D750005718-11082004><FONT =
face=3DArial=20
color=3D#0000ff size=3D2>I define instances this =
way:</FONT></SPAN></DIV>
<DIV dir=3Dltr align=3Dleft><SPAN class=3D750005718-11082004>
<P><FONT size=3D2>_rulesEngine.store(<FONT =
color=3D#2a00ff>"INSTANCE"</FONT>,=20
fact_);</FONT></P>
<P><FONT size=3D2>executeCommand(<FONT color=3D#2a00ff>"(definstance =
"</FONT> +=20
factType + <FONT color=3D#2a00ff>" (fetch INSTANCE) <SPAN=20
class=3D750005718-11082004>dynamic</SPAN>)"</FONT>);</FONT></P></SPAN></D=
IV>
<DIV dir=3Dltr align=3Dleft><SPAN class=3D750005718-11082004><FONT =
face=3DArial=20
color=3D#0000ff size=3D2>No exceptions are thrown. If I ask for </FONT>
<P><FONT face=3DArial color=3D#0000ff size=3D2>Iterator=20
instances=3D_rulesEngine.listDefinstances();</FONT></P>
<P><SPAN class=3D750005718-11082004><FONT face=3DArial color=3D#0000ff =
size=3D2>I get an=20
iterator with all the instances I defined. However =
executeCommand("(facts)")=20
tells me I have no facts.</FONT></SPAN></P>
<P><SPAN class=3D750005718-11082004><FONT face=3DArial color=3D#0000ff =
size=3D2>Anyone=20
have an idea of what is going on? This has got me =
stumped...</FONT></SPAN></P>
<P><SPAN class=3D750005718-11082004><FONT face=3DArial color=3D#0000ff=20
size=3D2>Thanks,</FONT></SPAN></P>
<P><SPAN class=3D750005718-11082004><FONT face=3DArial color=3D#0000ff=20
size=3D2>Miguel</FONT></SPAN></P></SPAN></DIV><BR>
<DIV class=3DOutlookMessageHeader lang=3Den-us dir=3Dltr align=3Dleft>
<HR tabIndex=3D-1>
<FONT face=3DTahoma size=3D2><B>From:</B> [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] <B>On Behalf Of </B>Ferreira, =
Miguel=20
(IT)<BR><B>Sent:</B> Wednesday, August 11, 2004 11:12 AM<BR><B>To:</B>=20
[EMAIL PROTECTED]<BR><B>Subject:</B> JESS: defclass=20
problem<BR></FONT><BR></DIV>
<DIV></DIV>
<DIV>
<DIV><SPAN class=3D366255414-11082004><FONT face=3DArial=20
size=3D2>Hello,</FONT></SPAN></DIV>
<DIV><SPAN class=3D366255414-11082004><FONT face=3DArial=20
size=3D2></FONT></SPAN> </DIV>
<DIV><SPAN class=3D366255414-11082004><FONT face=3DArial size=3D2>I am =
having some=20
problems with defclass for inherited classes. I am using Jess as a =
library=20
within my Java code. I load and define facts through Java, through the =
Rete=20
class.</FONT></SPAN></DIV>
<DIV><SPAN class=3D366255414-11082004><FONT face=3DArial=20
size=3D2></FONT></SPAN> </DIV>
<DIV><SPAN class=3D366255414-11082004><FONT face=3DArial size=3D2>I have =
a base fact=20
named BeanFact which most other facts inherit from. Just before adding a =
fact to=20
Jess, I first check if that class of fact has been defclassed, and if =
not I=20
defclass all of its superclasses (that are not already defclassed) and =
then the=20
class of fact itself.</FONT></SPAN></DIV>
<DIV><SPAN class=3D366255414-11082004><FONT face=3DArial=20
size=3D2></FONT></SPAN> </DIV>
<DIV><SPAN class=3D366255414-11082004><FONT face=3DArial =
size=3D2>Everything works=20
fine, defclassing children facts of BeanFact for a few different types =
and then=20
it fails, with the message: </FONT></SPAN></DIV>
<DIV><SPAN class=3D366255414-11082004><FONT face=3DArial=20
size=3D2></FONT></SPAN> </DIV>
<DIV><SPAN class=3D366255414-11082004><FONT color=3D#ff0000>
<P><FONT size=3D2>Jess reported an error in routine =
defclass.<BR>Message: No such=20
parent template: WorkLoadOrch.BeanFact.<BR>at jess.d7.a(Unknown =
Source)<BR>at=20
jess.Rete.defclass(Unknown Source)<BR>at=20
WorkLoadOrch.RulesEngineBridge.defClassCheck(RulesEngineBridge.java:56)<B=
R>at=20
WorkLoadOrch.RulesEngineBridge.defClassCheck(RulesEngineBridge.java:53)<B=
R>at=20
WorkLoadOrch.RulesEngineBridge.addFact(RulesEngineBridge.java:69)<BR>at=20
WorkLoadOrch.RulesEngineBridge.addFact(RulesEngineBridge.java:103)</FONT>=
</P>
<P><SPAN class=3D366255414-11082004><FONT face=3DArial color=3D#000000 =
size=3D2>I was=20
debuging and have a call to <FONT size=3D2>listDefclasses() and in the =
Iterator=20
returned I see the <FONT face=3D"Times New Roman"=20
color=3D#ff0000>WorkLoadOrch.BeanFact </FONT></FONT></FONT></SPAN></=
P>
<P><SPAN class=3D366255414-11082004> <SPAN =
class=3D366255414-11082004><FONT=20
face=3DArial color=3D#000000 size=3D2>Any suggestions as to what I can =
do or check?=20
Should I define all the classes at the start of the program rather than =
as I use=20
them? </FONT></SPAN></SPAN></P>
<P><SPAN class=3D366255414-11082004><SPAN =
class=3D366255414-11082004><FONT=20
face=3DArial color=3D#000000 size=3D2>Thanks,</FONT></SPAN></SPAN></P>
<P><SPAN class=3D366255414-11082004><SPAN =
class=3D366255414-11082004><FONT=20
face=3DArial color=3D#000000=20
size=3D2>Miguel</FONT></SPAN></SPAN></P></FONT></SPAN></DIV></DIV>
<DIV>
<HR>
</DIV>
<DIV>
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sender.<SPAN=20
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confidentiality or=20
privilege, and use is prohibited.</FONT></SPAN></P></DIV></DIV>
<DIV>
<HR>
</DIV>
<DIV>
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