Nabble - Jess

Re: JESS: Interfaces and classes with shadow facts

2009-11-06T02:48:10Z

Thanks for the answers given. I'll try the suggestions referred. Thanks
again.
Joao

On 05-11-2009 13:43, rrogers@... wrote:

> In the case I was using, I have a couple of classes that all implement the same interface (this is Java, independent of Jess) E.g.
> ClassA implements IMyInterface
> ClassB extends ClassA
> ClassC implements IMyInterface
>
> My simple IMyInterface implements a getName function.
>
> In Jess, you would declare the inheritence tree like:
> (defclass IMyInterface IMyInterface)
> (defclass ClassA ClassA extends IMyInterface)
> (defclass ClassB ClassB extends ClassA)
> (defclass ClassC ClassC extends IMyInterface)
>
> In your Java code, you would create instance of the classes as needed
> ClassA a = new ClassA();
> ClassB b = new ClassB();
> ClassC c = new ClassC();
> Rete r = new Rete();
> r.add(a);
> r.add(b);
> r.add(c);
>
> A rule like this will match all 3 objects, because they ultimately implement the same interface
> r.eval("(defrule find-an-i1 \n" +
> "?x <- (IInterface1 (name ?x_name) (OBJECT ?x_obj))\n" +
> "=>" +
> "(printout t \"Found an IInterface1 called \" ?x_name crlf)\n" +
> ")"
> );
>
> It is a single inheritence tree, so you can't have
> (defclass ClassA ClassA extends IMyInteface, ISomeOtherInterface)
> You might need to create an interface which is a combination of two or more other interfaces so that there is a single path to the root.
>
> -Russ
>
> -----Original Message-----
> From: owner-jess-users@... [mailto:owner-jess-users@...] On Behalf Of Joao Carlos Mourao
> Sent: Thursday, November 05, 2009 2:39 AM
> To: jess-users@...
> Subject: Re: JESS: Interfaces and classes with shadow facts
>
> What i would like to make, is to tell jess that Interface1 is the interface of Class1, so when i try to match a fact from Class1 using Interface1, it works. But I guess, from your answer, Jess don't see any difference between interface and classes, so if the objects are inserted as Class1, then with Class1 should be matched and not with Interface1.
> Regards,
>
> Joao
>
> On 03-11-2009 17:17, Ernest Friedman-Hill wrote:
>
>> Jess treats classes and interfaces the same. Template inheritance
>> models a single-inheritance tree, and each object can be in working
>> memory just once, so there's no way to create multiple different trees
>> of templates to match the same set of facts.
>>
>> The basic idea of what you've shown below should work fine; is there a
>> specific problem with it that I can help you with?
>>
>>
>> On Nov 3, 2009, at 8:40 AM, Joao Carlos Mourao wrote:
>>
>>
>>> Hello,
>>>
>>> I'm having some problems to use interfaces in Jess. I had make a
>>> search in the mailing list, and although there were some messages
>>> over the topic, i still was not able to really understand how the process works.
>>> The problem is basic: I have a set of classes C, and a respective set
>>> of interfaces I. I'm creating objects of classes C and adding to the
>>> working memory. I would like use the interfaces I to access this
>>> objects (in Jess). How?
>>>
>>> Solutions:
>>> a) should i declare the classes, and work with the classes,
>>> leaving the interfaces behind;
>>> b) declare the interfaces as (deftemplate I_name (declare
>>> (from-class C_name)); Doesn't work, because when i try to match in a
>>> rule, I_name is not the same as C_name, then Jess don't match
>>> c) have a combination of declarations of interfaces and classes,
>>> like Russ did in a previous message
>>> "r.eval("(defclass IInterface1 IInterface1)");
>>> r.eval("(defclass IInterface2 IInterface2 extends
>>> IInterface1)");
>>> r.eval("(defclass AbstractClassA AbstractClassA
>>> extends IInterface2)");
>>> r.eval("(defclass ClassB ClassB extends
>>> AbstractClassA)");
>>> r.eval("(defclass ClassC ClassC extends
>>> AbstractClassA)");
>>> r.eval("(defclass ClassD ClassD extends IInterface2)");"
>>> , which i have tried but haven't worked.
>>>
>>> Any ideas?
>>>
>>>
>>> Joao
>>>
>>> -unclassified
>>>
>>>
>>> ---------------------------------------------------------------------
>>> ---------------------------------------
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>>>
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>>>
>>>
>>> <joao.mourao.vcf>
>>>
>> ---------------------------------------------------------
>> Ernest Friedman-Hill
>> Informatics & Decision Sciences Phone: (925) 294-2154
>> Sandia National Labs
>> PO Box 969, MS 9012 ejfried@...
>> Livermore, CA 94550 http://www.jessrules.com
>>
>>
>>
>>
>>
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>>
>
>
> ------------------------------------------------------------------------------------------------------------
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>
> If you are not the intended recipient of this email, please notify the sender and delete it.
> Any unauthorized copying, disclosure or distribution of this email or its attachment(s) is forbidden.
> Thales Nederland BV will not accept liability for any damage caused by this email or its attachment(s).
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> ------------------------------------------------------------------------------------------------------------
>
>
>
> --------------------------------------------------------------------
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> in the BODY of a message to majordomo@..., NOT to the list
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>

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Disclaimer:

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Re: JESS: decimal constant

2009-11-05T07:36:09Z

No, there is not. You can use double-quoted Strings instead of symbols
though.

On Nov 5, 2009, at 10:14 AM, Michael Welter wrote:

> Is there a way to switch-off the decimal constant in the grammar? For
> example, I'd like the token 64d to be parsed as a symbol and not as a
> number.
>
> Thanks
>

---------------------------------------------------------
Ernest Friedman-Hill
Informatics & Decision Sciences Phone: (925) 294-2154
Sandia National Labs
PO Box 969, MS 9012 ejfried@...
Livermore, CA 94550 http://www.jessrules.com

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Re: JESS: how to store and fetch between java & jess

2009-11-05T07:31:19Z

OH,YES!
It works! That's really what I wanted. Thanks very much!
Thanks all you guys.

You are very welcome :-)

PS: I am "she", not "he". Haha!

Arrggg!! Much to my chagrin, Wolfgang admonished me for that... I'm terribly sorry!
Cheers,
Jason

On Thu, Nov 5, 2009 at 10:19 AM, Weijing Bai <estherbaiweijing@...> wrote:

OH,YES!

It works! That's really what I wanted. Thanks very much!

Thanks all you guys.

PS: I am "she", not "he". Haha!

On Thu, Nov 5, 2009 at 10:50 PM, Jason Morris <jason.c.morris@...>wrote:

> Hey Ernest,
>
> Assuming that Weijing resolves the Rete instance disconnect, won't he still
> will have a problem because he's trying to compute with the fetched Integer
> object and not its int value? Here's how I massaged his code:
>
> ; a.clp
> ; ======
> ; Note: this file has parsing errors because it lacks a Rete object
> reference.
> ; However, this script is called by the attached driver class, so it works.
>
> (defglobal ?*m* = ((fetch m) intValue))
> (defglobal ?*n* = ((fetch n) intValue))
>
> (printout t"?m = " ?*m* crlf) ; checking m value
> (printout t"?n = " ?*n* crlf) ; checking n value
>
> (bind ?I (div ?*m* 2 ))(printout t "?I = " ?I crlf)
> (bind ?J (+ ?*m* ?*n* 2 ))(printout t "?J = " ?I crlf)
> (bind ?J'(+ (div (+ ?*m* 1) 2) 1))(printout t "?J' = " ?J' crlf)
> (bind ?K (+ ?*m* 2 ))(printout t "?K = " ?K crlf)
> (bind ?L (+ (div (- ?*m* 3) 2) 3))(printout t "?L = " ?L crlf)
>
> then I wrote a simple driver to replace his missing code...
>
> import jess.JessException;
> import jess.Rete;
>
> public class StoreProblemDriver {
> public static void main(String[] args) {
> Rete engine = new Rete();
> engine.store("m", 7);
> engine.store("n", 5);
>
> try {
> engine.batch("clp/a.clp");
> } catch (JessException e) {
> e.printStackTrace();
> }
> }
> }
>
> which produced the output...
>
> ; OUTPUT
> ;========
> ;?m = 7
> ;?n = 5
> ;?I = 3
> ;?J = 3
> ;?J' = 5
> ;?K = 9
> ;?L = 5
>
> Weijing: Is this what you wanted?
>
> Cheers,
> Jason
>
>
> On Thu, Nov 5, 2009 at 9:08 AM, Ernest Friedman-Hill <ejfried@...
> >wrote:
>
> > You don't show the connection between the Java calls to "store()" and
> where
> > Jess reads the module2.txt file. Are you sure it's the same instance of
> > jess.Rete that's involved in both? In other words, where and how is
> "batch
> > module2.txt" being invoked? Each Rete object will have its own
> independent
> > storage map.
> >
> > If it is the same Rete object, then perhaps there's a call to "clear"
> > somewhere in between the store and fetch?
> >
> >
> >
> >
> > On Nov 5, 2009, at 8:47 AM, Weijing Bai wrote:
> >
> > oh，Thanks for your advice.
> >>
> >>
> >> my java code:
> >>
> >> Rete engine = new Rete();
> >> engine.store("m", 7);
> >> engine.store("n", 5);
> >>
> >> the jess clp:
> >> " module2.txt"
> >>
> >> (defglobal ?*m* = (fetch m ))
> >> (defglobal ?*n* = (fetch n ))
> >>
> >> (printout t"?m = " ?*m* crlf)
> >> (printout t"?n = " ?*n* crlf)
> >>
> >> (bind ?I (div ?*m* 2 ))
> >> (bind ?J (+ ?*m* ?*n* 2 ))
> >> (bind ?J'(+ (div (+ ?*m* 1) 2) 1))
> >> (bind ?K (+ ?*m* 2 ))
> >> (bind ?L (+ (div (- ?*m* 3) 2) 3))
> >>
> >>
> >> the error message:
> >>
> >> ?m = nil
> >> ?n = nil
> >> Exception in thread "main" Jess reported an error in routine
> >> Value.intValue
> >> while executing (div ?*m* 2)
> >> while executing (bind ?I (div ?*m* 2))
> >> while executing (batch D:Jess71p1\module2.txt)
> >> Message: 'nil' is a symbol, not an integer.
> >>
> >>
> >> what's more, I once want use this in my java code, it did not work also:
> >> java code:
> >>
> >> Rete engine = new Rete();
> >>
> >> engine.eval("(defglobal ?*m* = 7)");
> >> engine.eval("(defglobal ?*n* = 5)");
> >>
> >> "module2.txt":
> >>
> >> (printout t"?m = " ?*m* crlf)
> >> (printout t"?n = " ?*n* crlf)
> >>
> >> reports error:
> >> while executing (printout t "?m = " ?*m* crlf)
> >> while executing (batch D:\module2.txt)
> >> Message: No such variable *m*.
> >>
> >>
> >>
> >>
> >>
> >>
> >>
> >> On Thu, Nov 5, 2009 at 9:19 PM, Ernest Friedman-Hill <
> ejfried@...
> >> >wrote:
> >>
> >> I think if you just show us the actual code that caused the error, and
> >>> more
> >>> details about the error -- i.e., is this a runtime or compile-time
> error,
> >>> from Java or from Jess, and include a stack trace -- I'm sure we can
> help
> >>> you fix it. Please cut and paste the real code, and the real stack
> trace
> >>> --
> >>> summaries and remembered bits and piece are normally not that helpful

--
Cheers,
Jason
----------------------------------------------------------
Morris Technical Solutions LLC
consulting@...
(517) 304-5883

Re: JESS: how to store and fetch between java & jess

2009-11-05T07:31:19Z

OH,YES!
It works! That's really what I wanted. Thanks very much!
Thanks all you guys.

You are very welcome :-)

PS: I am "she", not "he". Haha!

Arrggg!! Much to my chagrin, Wolfgang admonished me for that... I'm terribly sorry!
Cheers,
Jason

On Thu, Nov 5, 2009 at 10:19 AM, Weijing Bai <estherbaiweijing@...> wrote:

OH,YES!

It works! That's really what I wanted. Thanks very much!

Thanks all you guys.

PS: I am "she", not "he". Haha!

On Thu, Nov 5, 2009 at 10:50 PM, Jason Morris <jason.c.morris@...>wrote:

> Hey Ernest,
>
> Assuming that Weijing resolves the Rete instance disconnect, won't he still
> will have a problem because he's trying to compute with the fetched Integer
> object and not its int value? Here's how I massaged his code:
>
> ; a.clp
> ; ======
> ; Note: this file has parsing errors because it lacks a Rete object
> reference.
> ; However, this script is called by the attached driver class, so it works.
>
> (defglobal ?*m* = ((fetch m) intValue))
> (defglobal ?*n* = ((fetch n) intValue))
>
> (printout t"?m = " ?*m* crlf) ; checking m value
> (printout t"?n = " ?*n* crlf) ; checking n value
>
> (bind ?I (div ?*m* 2 ))(printout t "?I = " ?I crlf)
> (bind ?J (+ ?*m* ?*n* 2 ))(printout t "?J = " ?I crlf)
> (bind ?J'(+ (div (+ ?*m* 1) 2) 1))(printout t "?J' = " ?J' crlf)
> (bind ?K (+ ?*m* 2 ))(printout t "?K = " ?K crlf)
> (bind ?L (+ (div (- ?*m* 3) 2) 3))(printout t "?L = " ?L crlf)
>
> then I wrote a simple driver to replace his missing code...
>
> import jess.JessException;
> import jess.Rete;
>
> public class StoreProblemDriver {
> public static void main(String[] args) {
> Rete engine = new Rete();
> engine.store("m", 7);
> engine.store("n", 5);
>
> try {
> engine.batch("clp/a.clp");
> } catch (JessException e) {
> e.printStackTrace();
> }
> }
> }
>
> which produced the output...
>
> ; OUTPUT
> ;========
> ;?m = 7
> ;?n = 5
> ;?I = 3
> ;?J = 3
> ;?J' = 5
> ;?K = 9
> ;?L = 5
>
> Weijing: Is this what you wanted?
>
> Cheers,
> Jason
>
>
> On Thu, Nov 5, 2009 at 9:08 AM, Ernest Friedman-Hill <ejfried@...
> >wrote:
>
> > You don't show the connection between the Java calls to "store()" and
> where
> > Jess reads the module2.txt file. Are you sure it's the same instance of
> > jess.Rete that's involved in both? In other words, where and how is
> "batch
> > module2.txt" being invoked? Each Rete object will have its own
> independent
> > storage map.
> >
> > If it is the same Rete object, then perhaps there's a call to "clear"
> > somewhere in between the store and fetch?
> >
> >
> >
> >
> > On Nov 5, 2009, at 8:47 AM, Weijing Bai wrote:
> >
> > oh，Thanks for your advice.
> >>
> >>
> >> my java code:
> >>
> >> Rete engine = new Rete();
> >> engine.store("m", 7);
> >> engine.store("n", 5);
> >>
> >> the jess clp:
> >> " module2.txt"
> >>
> >> (defglobal ?*m* = (fetch m ))
> >> (defglobal ?*n* = (fetch n ))
> >>
> >> (printout t"?m = " ?*m* crlf)
> >> (printout t"?n = " ?*n* crlf)
> >>
> >> (bind ?I (div ?*m* 2 ))
> >> (bind ?J (+ ?*m* ?*n* 2 ))
> >> (bind ?J'(+ (div (+ ?*m* 1) 2) 1))
> >> (bind ?K (+ ?*m* 2 ))
> >> (bind ?L (+ (div (- ?*m* 3) 2) 3))
> >>
> >>
> >> the error message:
> >>
> >> ?m = nil
> >> ?n = nil
> >> Exception in thread "main" Jess reported an error in routine
> >> Value.intValue
> >> while executing (div ?*m* 2)
> >> while executing (bind ?I (div ?*m* 2))
> >> while executing (batch D:Jess71p1\module2.txt)
> >> Message: 'nil' is a symbol, not an integer.
> >>
> >>
> >> what's more, I once want use this in my java code, it did not work also:
> >> java code:
> >>
> >> Rete engine = new Rete();
> >>
> >> engine.eval("(defglobal ?*m* = 7)");
> >> engine.eval("(defglobal ?*n* = 5)");
> >>
> >> "module2.txt":
> >>
> >> (printout t"?m = " ?*m* crlf)
> >> (printout t"?n = " ?*n* crlf)
> >>
> >> reports error:
> >> while executing (printout t "?m = " ?*m* crlf)
> >> while executing (batch D:\module2.txt)
> >> Message: No such variable *m*.
> >>
> >>
> >>
> >>
> >>
> >>
> >>
> >> On Thu, Nov 5, 2009 at 9:19 PM, Ernest Friedman-Hill <
> ejfried@...
> >> >wrote:
> >>
> >> I think if you just show us the actual code that caused the error, and
> >>> more
> >>> details about the error -- i.e., is this a runtime or compile-time
> error,
> >>> from Java or from Jess, and include a stack trace -- I'm sure we can
> help
> >>> you fix it. Please cut and paste the real code, and the real stack
> trace
> >>> --
> >>> summaries and remembered bits and piece are normally not that helpful

--
Cheers,
Jason
----------------------------------------------------------
Morris Technical Solutions LLC
consulting@...
(517) 304-5883

Re: JESS: how to store and fetch between java & jess

2009-11-05T07:19:52Z

OH,YES!

It works! That's really what I wanted. Thanks very much!

Thanks all you guys.

PS: I am "she", not "he". Haha!

On Thu, Nov 5, 2009 at 10:50 PM, Jason Morris <jason.c.morris@...>wrote:

> Hey Ernest,
>
> Assuming that Weijing resolves the Rete instance disconnect, won't he still
> will have a problem because he's trying to compute with the fetched Integer
> object and not its int value? Here's how I massaged his code:
>
> ; a.clp
> ; ======
> ; Note: this file has parsing errors because it lacks a Rete object
> reference.
> ; However, this script is called by the attached driver class, so it works.
>
> (defglobal ?*m* = ((fetch m) intValue))
> (defglobal ?*n* = ((fetch n) intValue))
>
> (printout t"?m = " ?*m* crlf) ; checking m value
> (printout t"?n = " ?*n* crlf) ; checking n value
>
> (bind ?I (div ?*m* 2 ))(printout t "?I = " ?I crlf)
> (bind ?J (+ ?*m* ?*n* 2 ))(printout t "?J = " ?I crlf)
> (bind ?J'(+ (div (+ ?*m* 1) 2) 1))(printout t "?J' = " ?J' crlf)
> (bind ?K (+ ?*m* 2 ))(printout t "?K = " ?K crlf)
> (bind ?L (+ (div (- ?*m* 3) 2) 3))(printout t "?L = " ?L crlf)
>
> then I wrote a simple driver to replace his missing code...
>
> import jess.JessException;
> import jess.Rete;
>
> public class StoreProblemDriver {
> public static void main(String[] args) {
> Rete engine = new Rete();
> engine.store("m", 7);
> engine.store("n", 5);
>
> try {
> engine.batch("clp/a.clp");
> } catch (JessException e) {
> e.printStackTrace();
> }
> }
> }
>
> which produced the output...
>
> ; OUTPUT
> ;========
> ;?m = 7
> ;?n = 5
> ;?I = 3
> ;?J = 3
> ;?J' = 5
> ;?K = 9
> ;?L = 5
>
> Weijing: Is this what you wanted?
>
> Cheers,
> Jason
>
>
> On Thu, Nov 5, 2009 at 9:08 AM, Ernest Friedman-Hill <ejfried@...
> >wrote:
>
> > You don't show the connection between the Java calls to "store()" and
> where
> > Jess reads the module2.txt file. Are you sure it's the same instance of
> > jess.Rete that's involved in both? In other words, where and how is
> "batch
> > module2.txt" being invoked? Each Rete object will have its own
> independent
> > storage map.
> >
> > If it is the same Rete object, then perhaps there's a call to "clear"
> > somewhere in between the store and fetch?
> >
> >
> >
> >
> > On Nov 5, 2009, at 8:47 AM, Weijing Bai wrote:
> >
> > oh，Thanks for your advice.
> >>
> >>
> >> my java code:
> >>
> >> Rete engine = new Rete();
> >> engine.store("m", 7);
> >> engine.store("n", 5);
> >>
> >> the jess clp:
> >> " module2.txt"
> >>
> >> (defglobal ?*m* = (fetch m ))
> >> (defglobal ?*n* = (fetch n ))
> >>
> >> (printout t"?m = " ?*m* crlf)
> >> (printout t"?n = " ?*n* crlf)
> >>
> >> (bind ?I (div ?*m* 2 ))
> >> (bind ?J (+ ?*m* ?*n* 2 ))
> >> (bind ?J'(+ (div (+ ?*m* 1) 2) 1))
> >> (bind ?K (+ ?*m* 2 ))
> >> (bind ?L (+ (div (- ?*m* 3) 2) 3))
> >>
> >>
> >> the error message:
> >>
> >> ?m = nil
> >> ?n = nil
> >> Exception in thread "main" Jess reported an error in routine
> >> Value.intValue
> >> while executing (div ?*m* 2)
> >> while executing (bind ?I (div ?*m* 2))
> >> while executing (batch D:Jess71p1\module2.txt)
> >> Message: 'nil' is a symbol, not an integer.
> >>
> >>
> >> what's more, I once want use this in my java code, it did not work also:
> >> java code:
> >>
> >> Rete engine = new Rete();
> >>
> >> engine.eval("(defglobal ?*m* = 7)");
> >> engine.eval("(defglobal ?*n* = 5)");
> >>
> >> "module2.txt":
> >>
> >> (printout t"?m = " ?*m* crlf)
> >> (printout t"?n = " ?*n* crlf)
> >>
> >> reports error:
> >> while executing (printout t "?m = " ?*m* crlf)
> >> while executing (batch D:\module2.txt)
> >> Message: No such variable *m*.
> >>
> >>
> >>
> >>
> >>
> >>
> >>
> >> On Thu, Nov 5, 2009 at 9:19 PM, Ernest Friedman-Hill <
> ejfried@...
> >> >wrote:
> >>
> >> I think if you just show us the actual code that caused the error, and
> >>> more
> >>> details about the error -- i.e., is this a runtime or compile-time
> error,
> >>> from Java or from Jess, and include a stack trace -- I'm sure we can
> help
> >>> you fix it. Please cut and paste the real code, and the real stack
> trace
> >>> --
> >>> summaries and remembered bits and piece are normally not that helpful

JESS: decimal constant

2009-11-05T07:14:33Z

Is there a way to switch-off the decimal constant in the grammar? For
example, I'd like the token 64d to be parsed as a symbol and not as a
number.

Thanks

--------------------------------------------------------------------
To unsubscribe, send the words 'unsubscribe jess-users you@...'
in the BODY of a message to majordomo@..., NOT to the list
(use your own address!) List problems? Notify owner-jess-users@....
--------------------------------------------------------------------

Re: JESS: how to store and fetch between java & jess

2009-11-05T06:54:58Z

I should add that if I replace the code

(defglobal ?*m* = ((fetch m) intValue))
(defglobal ?*n* = ((fetch n) intValue))

with

(defglobal ?*m* = (fetch m))
(defglobal ?*n* = (fetch n))

as in Weijing's orginal code, I get

Jess reported an error in routine Value.intValue
while executing (div ?*m* 2)
while executing (bind ?I (div ?*m* 2)).
Message: '<Java-Object:java.lang.Integer>' is JAVA_OBJECT, not an
integer.
Program text: ( bind ?I ( div ?*m* 2 ) ) at line 14 in file clp/a.clp.

On Thu, Nov 5, 2009 at 9:08 AM, Ernest Friedman-Hill <ejfried@...>wrote:

> You don't show the connection between the Java calls to "store()" and where
> Jess reads the module2.txt file. Are you sure it's the same instance of
> jess.Rete that's involved in both? In other words, where and how is "batch
> module2.txt" being invoked? Each Rete object will have its own independent
> storage map.
>
> If it is the same Rete object, then perhaps there's a call to "clear"
> somewhere in between the store and fetch?
>
>
>
>
> On Nov 5, 2009, at 8:47 AM, Weijing Bai wrote:
>
> oh，Thanks for your advice.
>>
>>
>> my java code:
>>
>> Rete engine = new Rete();
>> engine.store("m", 7);
>> engine.store("n", 5);
>>
>> the jess clp:
>> " module2.txt"
>>
>> (defglobal ?*m* = (fetch m ))
>> (defglobal ?*n* = (fetch n ))
>>
>> (printout t"?m = " ?*m* crlf)
>> (printout t"?n = " ?*n* crlf)
>>
>> (bind ?I (div ?*m* 2 ))
>> (bind ?J (+ ?*m* ?*n* 2 ))
>> (bind ?J'(+ (div (+ ?*m* 1) 2) 1))
>> (bind ?K (+ ?*m* 2 ))
>> (bind ?L (+ (div (- ?*m* 3) 2) 3))
>>
>>
>> the error message:
>>
>> ?m = nil
>> ?n = nil
>> Exception in thread "main" Jess reported an error in routine
>> Value.intValue
>> while executing (div ?*m* 2)
>> while executing (bind ?I (div ?*m* 2))
>> while executing (batch D:Jess71p1\module2.txt)
>> Message: 'nil' is a symbol, not an integer.
>>
>>
>> what's more, I once want use this in my java code, it did not work also:
>> java code:
>>
>> Rete engine = new Rete();
>>
>> engine.eval("(defglobal ?*m* = 7)");
>> engine.eval("(defglobal ?*n* = 5)");
>>
>> "module2.txt":
>>
>> (printout t"?m = " ?*m* crlf)
>> (printout t"?n = " ?*n* crlf)
>>
>> reports error:
>> while executing (printout t "?m = " ?*m* crlf)
>> while executing (batch D:\module2.txt)
>> Message: No such variable *m*.
>>
>>
>>
>>
>>
>>
>>
>> On Thu, Nov 5, 2009 at 9:19 PM, Ernest Friedman-Hill <ejfried@...
>> >wrote:
>>
>> I think if you just show us the actual code that caused the error, and
>>> more
>>> details about the error -- i.e., is this a runtime or compile-time error,
>>> from Java or from Jess, and include a stack trace -- I'm sure we can help
>>> you fix it. Please cut and paste the real code, and the real stack trace
>>> --
>>> summaries and remembered bits and piece are normally not that helpful.
>>>
>>>
>>> On Nov 5, 2009, at 1:29 AM, Weijing Bai wrote:
>>>
>>> hi, everyone
>>>
>>>>
>>>> I have a problem .
>>>>
>>>> It works well when store a param in jess and fetch it in java, but it
>>>> reports a error when store in java and fetch it in jess. the error is :"
>>>> cannot find m" and so on.
>>>>
>>>> who has once use "store-fetch " sucessfully, please give me some
>>>> suggestions.
>>>>
>>>> Is there any other way can pass a value from java to jess?
>>>>
>>>> thank very much.
>>>>
>>>>
>>>> Esther Bai
>>>>
>>>>
>>> ---------------------------------------------------------
>>> Ernest Friedman-Hill
>>> Informatics & Decision Sciences, Sandia National Laboratories
>>> PO Box 969, MS 9012, Livermore, CA 94550
>>> http://www.jessrules.com
>>>
>>>
>>>
>>>
>>>
>>>
>>>
>>> --------------------------------------------------------------------
>>> To unsubscribe, send the words 'unsubscribe jess-users you@...'
>>> in the BODY of a message to majordomo@..., NOT to the list
>>> (use your own address!) List problems? Notify
>>> owner-jess-users@...
>>>
>>
> ---------------------------------------------------------
> Ernest Friedman-Hill
> Informatics & Decision Sciences Phone: (925) 294-2154
> Sandia National Labs
> PO Box 969, MS 9012 ejfried@...
>
> Livermore, CA 94550 http://www.jessrules.com
>
>
>
>
>
> --------------------------------------------------------------------
> To unsubscribe, send the words 'unsubscribe jess-users you@...'
> in the BODY of a message to majordomo@..., NOT to the list
> (use your own address!) List problems? Notify owner-jess-users@...

Re: JESS: how to store and fetch between java & jess

2009-11-05T06:50:05Z

Hey Ernest,

Assuming that Weijing resolves the Rete instance disconnect, won't he still
will have a problem because he's trying to compute with the fetched Integer
object and not its int value? Here's how I massaged his code:

; a.clp
; ======
; Note: this file has parsing errors because it lacks a Rete object
reference.
; However, this script is called by the attached driver class, so it works.

(defglobal ?*m* = ((fetch m) intValue))
(defglobal ?*n* = ((fetch n) intValue))

(printout t"?m = " ?*m* crlf) ; checking m value
(printout t"?n = " ?*n* crlf) ; checking n value

(bind ?I (div ?*m* 2 ))(printout t "?I = " ?I crlf)
(bind ?J (+ ?*m* ?*n* 2 ))(printout t "?J = " ?I crlf)
(bind ?J'(+ (div (+ ?*m* 1) 2) 1))(printout t "?J' = " ?J' crlf)
(bind ?K (+ ?*m* 2 ))(printout t "?K = " ?K crlf)
(bind ?L (+ (div (- ?*m* 3) 2) 3))(printout t "?L = " ?L crlf)

then I wrote a simple driver to replace his missing code...

import jess.JessException;
import jess.Rete;

public class StoreProblemDriver {
public static void main(String[] args) {
Rete engine = new Rete();
engine.store("m", 7);
engine.store("n", 5);

try {
engine.batch("clp/a.clp");
} catch (JessException e) {
e.printStackTrace();
}
}
}

which produced the output...

; OUTPUT
;========
;?m = 7
;?n = 5
;?I = 3
;?J = 3
;?J' = 5
;?K = 9
;?L = 5

Weijing: Is this what you wanted?

Cheers,
Jason

On Thu, Nov 5, 2009 at 9:08 AM, Ernest Friedman-Hill <ejfried@...>wrote:

Re: JESS: how to store and fetch between java & jess

2009-11-05T06:34:54Z

What is stored under the keys "m" and "n" is a java.lang.Integer object. There's no problem with *fetching* this from Jess, but it's evaluation in a Jess expression - even after being stored in a defglobal or plain variable - is quite another matter.

I think looking at the Jess code below will show you what I mean. (jv = Jess Value, jo = Java Object)

(clear)

((engine) store jv (new jess.Value 7 4))
((engine) store jo (new Integer 7 ))

(bind ?value ((engine) fetch jv))
(printout t "value=" ?value crlf)
Jess> value=7

(bind ?value ((engine) fetch jo))
(printout t "value=" ?value crlf)
Jess> value=<Java-Object:java.lang.Integer>

(defglobal ?*m* = (fetch jv ))
(printout t "global ?*m*=" ?*m* crlf)
Jess> global ?*m*=7

(defglobal ?*n* = (fetch jo ))
(printout t "global ?*n*=" ?*n* crlf)
Jess> global ?*n*=<Java-Object:java.lang.Integer>

Cheers
-W

On Thu, Nov 5, 2009 at 2:47 PM, Weijing Bai <estherbaiweijing@...> wrote:

oh，Thanks for your advice.

my java code:

Rete engine = new Rete();
engine.store("m", 7);
engine.store("n", 5);

the jess clp:
" module2.txt"

(defglobal ?*m* = (fetch m ))
(defglobal ?*n* = (fetch n ))

(printout t"?m = " ?*m* crlf)
(printout t"?n = " ?*n* crlf)

(bind ?I (div ?*m* 2 ))
(bind ?J (+ ?*m* ?*n* 2 ))
(bind ?J'(+ (div (+ ?*m* 1) 2) 1))
(bind ?K (+ ?*m* 2 ))
(bind ?L (+ (div (- ?*m* 3) 2) 3))

the error message:

?m = nil
?n = nil
Exception in thread "main" Jess reported an error in routine Value.intValue
while executing (div ?*m* 2)
while executing (bind ?I (div ?*m* 2))
while executing (batch D:Jess71p1\module2.txt)
Message: 'nil' is a symbol, not an integer.

what's more, I once want use this in my java code, it did not work also:
java code:

Rete engine = new Rete();

engine.eval("(defglobal ?*m* = 7)");
engine.eval("(defglobal ?*n* = 5)");

"module2.txt":

(printout t"?m = " ?*m* crlf)
(printout t"?n = " ?*n* crlf)

reports error:
while executing (printout t "?m = " ?*m* crlf)
while executing (batch D:\module2.txt)
Message: No such variable *m*.

On Thu, Nov 5, 2009 at 9:19 PM, Ernest Friedman-Hill <ejfried@...>wrote:

> I think if you just show us the actual code that caused the error, and more
> details about the error -- i.e., is this a runtime or compile-time error,
> from Java or from Jess, and include a stack trace -- I'm sure we can help
> you fix it. Please cut and paste the real code, and the real stack trace --
> summaries and remembered bits and piece are normally not that helpful.
>
>
> On Nov 5, 2009, at 1:29 AM, Weijing Bai wrote:
>
> hi, everyone
>>
>> I have a problem .
>>
>> It works well when store a param in jess and fetch it in java, but it
>> reports a error when store in java and fetch it in jess. the error is :"
>> cannot find m" and so on.
>>
>> who has once use "store-fetch " sucessfully, please give me some
>> suggestions.
>>
>> Is there any other way can pass a value from java to jess?
>>
>> thank very much.
>>
>>
>> Esther Bai
>>
>
> ---------------------------------------------------------
> Ernest Friedman-Hill
> Informatics & Decision Sciences, Sandia National Laboratories
> PO Box 969, MS 9012, Livermore, CA 94550
> http://www.jessrules.com
>
>
>
>
>
>
>
> --------------------------------------------------------------------
> To unsubscribe, send the words 'unsubscribe jess-users you@...'
> in the BODY of a message to majordomo@..., NOT to the list
> (use your own address!) List problems? Notify owner-jess-users@...

Re: JESS: how to store and fetch between java & jess

2009-11-05T06:25:50Z

Ernest Friedman-Hill:

Thanks very much, there is a call to "clear " between the store and fetch.
the
engine.eval("(defglobal ?*m* = 7)");
engine.eval("(defglobal ?*n* = 5)");
can work well now.

But the first situation can not work also, I donot know how to change a
Java-Object:java.lang.Integer to integer in a jess text.

now it's report error is :

?m = <Java-Object:java.lang.Integer>
?n = <Java-Object:java.lang.Integer>
Exception in thread "main" Jess reported an error in routine Value.intValue
while executing (div ?*m* 2)
while executing (bind ?I (div ?*m* 2))
while executing (batch D:module2.txt)
Message: '<Java-Object:java.lang.Integer>' is JAVA_OBJECT, not an
integer.

thanks a lot!

On Thu, Nov 5, 2009 at 10:08 PM, Ernest Friedman-Hill <ejfried@...>wrote:

Re: JESS: how to store and fetch between java & jess

2009-11-05T06:08:47Z

You don't show the connection between the Java calls to "store()" and
where Jess reads the module2.txt file. Are you sure it's the same
instance of jess.Rete that's involved in both? In other words, where
and how is "batch module2.txt" being invoked? Each Rete object will
have its own independent storage map.

If it is the same Rete object, then perhaps there's a call to "clear"
somewhere in between the store and fetch?

On Nov 5, 2009, at 8:47 AM, Weijing Bai wrote:

> oh，Thanks for your advice.
>
>
> my java code:
>
> Rete engine = new Rete();
> engine.store("m", 7);
> engine.store("n", 5);
>
> the jess clp:
> " module2.txt"
>
> (defglobal ?*m* = (fetch m ))
> (defglobal ?*n* = (fetch n ))
>
> (printout t"?m = " ?*m* crlf)
> (printout t"?n = " ?*n* crlf)
>
> (bind ?I (div ?*m* 2 ))
> (bind ?J (+ ?*m* ?*n* 2 ))
> (bind ?J'(+ (div (+ ?*m* 1) 2) 1))
> (bind ?K (+ ?*m* 2 ))
> (bind ?L (+ (div (- ?*m* 3) 2) 3))
>
>
> the error message:
>
> ?m = nil
> ?n = nil
> Exception in thread "main" Jess reported an error in routine
> Value.intValue
> while executing (div ?*m* 2)
> while executing (bind ?I (div ?*m* 2))
> while executing (batch D:Jess71p1\module2.txt)
> Message: 'nil' is a symbol, not an integer.
>
>
> what's more, I once want use this in my java code, it did not work
> also:
> java code:
>
> Rete engine = new Rete();
>
> engine.eval("(defglobal ?*m* = 7)");
> engine.eval("(defglobal ?*n* = 5)");
>
> "module2.txt":
>
> (printout t"?m = " ?*m* crlf)
> (printout t"?n = " ?*n* crlf)
>
> reports error:
> while executing (printout t "?m = " ?*m* crlf)
> while executing (batch D:\module2.txt)
> Message: No such variable *m*.
>
>
>
>
>
>
>
> On Thu, Nov 5, 2009 at 9:19 PM, Ernest Friedman-Hill <ejfried@...
> >wrote:
>
>> I think if you just show us the actual code that caused the error,
>> and more
>> details about the error -- i.e., is this a runtime or compile-time
>> error,
>> from Java or from Jess, and include a stack trace -- I'm sure we
>> can help
>> you fix it. Please cut and paste the real code, and the real stack
>> trace --
>> summaries and remembered bits and piece are normally not that
>> helpful.
>>
>>
>> On Nov 5, 2009, at 1:29 AM, Weijing Bai wrote:
>>
>> hi, everyone
>>>
>>> I have a problem .
>>>
>>> It works well when store a param in jess and fetch it in java,
>>> but it
>>> reports a error when store in java and fetch it in jess. the error
>>> is :"
>>> cannot find m" and so on.
>>>
>>> who has once use "store-fetch " sucessfully, please give me some
>>> suggestions.
>>>
>>> Is there any other way can pass a value from java to jess?
>>>
>>> thank very much.
>>>
>>>
>>> Esther Bai
>>>
>>
>> ---------------------------------------------------------
>> Ernest Friedman-Hill
>> Informatics & Decision Sciences, Sandia National Laboratories
>> PO Box 969, MS 9012, Livermore, CA 94550
>> http://www.jessrules.com
>>
>>
>>
>>
>>
>>
>>
>> --------------------------------------------------------------------
>> To unsubscribe, send the words 'unsubscribe jess-users you@...
>> '
>> in the BODY of a message to majordomo@..., NOT to the list
>> (use your own address!) List problems? Notify owner-jess-users@...

---------------------------------------------------------
Ernest Friedman-Hill
Informatics & Decision Sciences Phone: (925) 294-2154
Sandia National Labs
PO Box 969, MS 9012 ejfried@...
Livermore, CA 94550 http://www.jessrules.com

--------------------------------------------------------------------
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in the BODY of a message to majordomo@..., NOT to the list
(use your own address!) List problems? Notify owner-jess-users@....
--------------------------------------------------------------------

Re: JESS: how to store and fetch between java & jess

2009-11-05T05:47:01Z

oh，Thanks for your advice.

my java code:

Rete engine = new Rete();
engine.store("m", 7);
engine.store("n", 5);

the jess clp:
" module2.txt"

(defglobal ?*m* = (fetch m ))
(defglobal ?*n* = (fetch n ))

(printout t"?m = " ?*m* crlf)
(printout t"?n = " ?*n* crlf)

(bind ?I (div ?*m* 2 ))
(bind ?J (+ ?*m* ?*n* 2 ))
(bind ?J'(+ (div (+ ?*m* 1) 2) 1))
(bind ?K (+ ?*m* 2 ))
(bind ?L (+ (div (- ?*m* 3) 2) 3))

the error message:

?m = nil
?n = nil
Exception in thread "main" Jess reported an error in routine Value.intValue
while executing (div ?*m* 2)
while executing (bind ?I (div ?*m* 2))
while executing (batch D:Jess71p1\module2.txt)
Message: 'nil' is a symbol, not an integer.

what's more, I once want use this in my java code, it did not work also:
java code:

Rete engine = new Rete();

engine.eval("(defglobal ?*m* = 7)");
engine.eval("(defglobal ?*n* = 5)");

"module2.txt":

(printout t"?m = " ?*m* crlf)
(printout t"?n = " ?*n* crlf)

reports error:
while executing (printout t "?m = " ?*m* crlf)
while executing (batch D:\module2.txt)
Message: No such variable *m*.

On Thu, Nov 5, 2009 at 9:19 PM, Ernest Friedman-Hill <ejfried@...>wrote:

> I think if you just show us the actual code that caused the error, and more
> details about the error -- i.e., is this a runtime or compile-time error,
> from Java or from Jess, and include a stack trace -- I'm sure we can help
> you fix it. Please cut and paste the real code, and the real stack trace --
> summaries and remembered bits and piece are normally not that helpful.
>
>
> On Nov 5, 2009, at 1:29 AM, Weijing Bai wrote:
>
> hi, everyone
>>
>> I have a problem .
>>
>> It works well when store a param in jess and fetch it in java, but it
>> reports a error when store in java and fetch it in jess. the error is :"
>> cannot find m" and so on.
>>
>> who has once use "store-fetch " sucessfully, please give me some
>> suggestions.
>>
>> Is there any other way can pass a value from java to jess?
>>
>> thank very much.
>>
>>
>> Esther Bai
>>
>
> ---------------------------------------------------------
> Ernest Friedman-Hill
> Informatics & Decision Sciences, Sandia National Laboratories
> PO Box 969, MS 9012, Livermore, CA 94550
> http://www.jessrules.com
>
>
>
>
>
>
>
> --------------------------------------------------------------------
> To unsubscribe, send the words 'unsubscribe jess-users you@...'
> in the BODY of a message to majordomo@..., NOT to the list
> (use your own address!) List problems? Notify owner-jess-users@...

Re: JESS: how to store and fetch between java & jess

2009-11-05T05:19:54Z

I think if you just show us the actual code that caused the error, and
more details about the error -- i.e., is this a runtime or compile-
time error, from Java or from Jess, and include a stack trace -- I'm
sure we can help you fix it. Please cut and paste the real code, and
the real stack trace -- summaries and remembered bits and piece are
normally not that helpful.

On Nov 5, 2009, at 1:29 AM, Weijing Bai wrote:

> hi, everyone
>
> I have a problem .
>
> It works well when store a param in jess and fetch it in java, but
> it reports a error when store in java and fetch it in jess. the
> error is :" cannot find m" and so on.
>
> who has once use "store-fetch " sucessfully, please give me some
> suggestions.
>
> Is there any other way can pass a value from java to jess?
>
> thank very much.
>
>
> Esther Bai

---------------------------------------------------------
Ernest Friedman-Hill
Informatics & Decision Sciences, Sandia National Laboratories
PO Box 969, MS 9012, Livermore, CA 94550
http://www.jessrules.com

--------------------------------------------------------------------
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in the BODY of a message to majordomo@..., NOT to the list
(use your own address!) List problems? Notify owner-jess-users@....
--------------------------------------------------------------------

RE: JESS: Interfaces and classes with shadow facts

2009-11-05T04:43:41Z

In the case I was using, I have a couple of classes that all implement the same interface (this is Java, independent of Jess) E.g.
ClassA implements IMyInterface
ClassB extends ClassA
ClassC implements IMyInterface

My simple IMyInterface implements a getName function.

In Jess, you would declare the inheritence tree like:
(defclass IMyInterface IMyInterface)
(defclass ClassA ClassA extends IMyInterface)
(defclass ClassB ClassB extends ClassA)
(defclass ClassC ClassC extends IMyInterface)

In your Java code, you would create instance of the classes as needed
ClassA a = new ClassA();
ClassB b = new ClassB();
ClassC c = new ClassC();
Rete r = new Rete();
r.add(a);
r.add(b);
r.add(c);

A rule like this will match all 3 objects, because they ultimately implement the same interface
r.eval("(defrule find-an-i1 \n" +
"?x <- (IInterface1 (name ?x_name) (OBJECT ?x_obj))\n" +
"=>" +
"(printout t \"Found an IInterface1 called \" ?x_name crlf)\n" +
")"
);

It is a single inheritence tree, so you can't have
(defclass ClassA ClassA extends IMyInteface, ISomeOtherInterface)
You might need to create an interface which is a combination of two or more other interfaces so that there is a single path to the root.

-Russ

-----Original Message-----
From: owner-jess-users@... [mailto:owner-jess-users@...] On Behalf Of Joao Carlos Mourao
Sent: Thursday, November 05, 2009 2:39 AM
To: jess-users@...
Subject: Re: JESS: Interfaces and classes with shadow facts

What i would like to make, is to tell jess that Interface1 is the interface of Class1, so when i try to match a fact from Class1 using Interface1, it works. But I guess, from your answer, Jess don't see any difference between interface and classes, so if the objects are inserted as Class1, then with Class1 should be matched and not with Interface1.
Regards,

Joao

On 03-11-2009 17:17, Ernest Friedman-Hill wrote:

> Jess treats classes and interfaces the same. Template inheritance
> models a single-inheritance tree, and each object can be in working
> memory just once, so there's no way to create multiple different trees
> of templates to match the same set of facts.
>
> The basic idea of what you've shown below should work fine; is there a
> specific problem with it that I can help you with?
>
>
> On Nov 3, 2009, at 8:40 AM, Joao Carlos Mourao wrote:
>
>> Hello,
>>
>> I'm having some problems to use interfaces in Jess. I had make a
>> search in the mailing list, and although there were some messages
>> over the topic, i still was not able to really understand how the process works.
>> The problem is basic: I have a set of classes C, and a respective set
>> of interfaces I. I'm creating objects of classes C and adding to the
>> working memory. I would like use the interfaces I to access this
>> objects (in Jess). How?
>>
>> Solutions:
>> a) should i declare the classes, and work with the classes,
>> leaving the interfaces behind;
>> b) declare the interfaces as (deftemplate I_name (declare
>> (from-class C_name)); Doesn't work, because when i try to match in a
>> rule, I_name is not the same as C_name, then Jess don't match
>> c) have a combination of declarations of interfaces and classes,
>> like Russ did in a previous message
>> "r.eval("(defclass IInterface1 IInterface1)");
>> r.eval("(defclass IInterface2 IInterface2 extends
>> IInterface1)");
>> r.eval("(defclass AbstractClassA AbstractClassA
>> extends IInterface2)");
>> r.eval("(defclass ClassB ClassB extends
>> AbstractClassA)");
>> r.eval("(defclass ClassC ClassC extends
>> AbstractClassA)");
>> r.eval("(defclass ClassD ClassD extends IInterface2)");"
>> , which i have tried but haven't worked.
>>
>> Any ideas?
>>
>>
>> Joao
>>
>> -unclassified
>>
>>
>> ---------------------------------------------------------------------
>> ---------------------------------------
>>
>> Disclaimer:
>>
>> If you are not the intended recipient of this email, please notify
>> the sender and delete it.
>> Any unauthorized copying, disclosure or distribution of this email or
>> its attachment(s) is forbidden.
>> Thales Nederland BV will not accept liability for any damage caused
>> by this email or its attachment(s).
>> Thales Nederland BV is seated in Hengelo and is registered at the
>> Chamber of Commerce under number 06061578.
>> ---------------------------------------------------------------------
>> ---------------------------------------
>>
>>
>> <joao.mourao.vcf>
>
> ---------------------------------------------------------
> Ernest Friedman-Hill
> Informatics & Decision Sciences Phone: (925) 294-2154
> Sandia National Labs
> PO Box 969, MS 9012 ejfried@...
> Livermore, CA 94550 http://www.jessrules.com
>
>
>
>
>
> --------------------------------------------------------------------
> To unsubscribe, send the words 'unsubscribe jess-users you@...'
> in the BODY of a message to majordomo@..., NOT to the list (use
> your own address!) List problems? Notify owner-jess-users@....
> --------------------------------------------------------------------
>

------------------------------------------------------------------------------------------------------------
Disclaimer:

If you are not the intended recipient of this email, please notify the sender and delete it.
Any unauthorized copying, disclosure or distribution of this email or its attachment(s) is forbidden.
Thales Nederland BV will not accept liability for any damage caused by this email or its attachment(s).
Thales Nederland BV is seated in Hengelo and is registered at the Chamber of Commerce under number 06061578.
------------------------------------------------------------------------------------------------------------

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Re: JESS: Interfaces and classes with shadow facts

2009-11-04T23:39:24Z

What i would like to make, is to tell jess that Interface1 is the
interface of Class1, so when i try to match a fact from Class1 using
Interface1, it works. But I guess, from your answer, Jess don't see any
difference between interface and classes, so if the objects are inserted
as Class1, then with Class1 should be matched and not with Interface1.
Regards,

Joao

On 03-11-2009 17:17, Ernest Friedman-Hill wrote:

> Jess treats classes and interfaces the same. Template inheritance
> models a single-inheritance tree, and each object can be in working
> memory just once, so there's no way to create multiple different trees
> of templates to match the same set of facts.
>
> The basic idea of what you've shown below should work fine; is there a
> specific problem with it that I can help you with?
>
>
> On Nov 3, 2009, at 8:40 AM, Joao Carlos Mourao wrote:
>
>> Hello,
>>
>> I'm having some problems to use interfaces in Jess. I had make a search
>> in the mailing list, and although there were some messages over the
>> topic, i still was not able to really understand how the process works.
>> The problem is basic: I have a set of classes C, and a respective set of
>> interfaces I. I'm creating objects of classes C and adding to the
>> working memory. I would like use the interfaces I to access this objects
>> (in Jess). How?
>>
>> Solutions:
>> a) should i declare the classes, and work with the classes, leaving
>> the interfaces behind;
>> b) declare the interfaces as (deftemplate I_name (declare
>> (from-class C_name)); Doesn't work, because when i try to match in a
>> rule, I_name is not the same as C_name, then Jess don't match
>> c) have a combination of declarations of interfaces and classes,
>> like Russ did in a previous message
>> "r.eval("(defclass IInterface1 IInterface1)");
>> r.eval("(defclass IInterface2 IInterface2 extends
>> IInterface1)");
>> r.eval("(defclass AbstractClassA AbstractClassA extends
>> IInterface2)");
>> r.eval("(defclass ClassB ClassB extends
>> AbstractClassA)");
>> r.eval("(defclass ClassC ClassC extends
>> AbstractClassA)");
>> r.eval("(defclass ClassD ClassD extends IInterface2)");"
>> , which i have tried but haven't worked.
>>
>> Any ideas?
>>
>>
>> Joao
>>
>> -unclassified
>>
>>
>> ------------------------------------------------------------------------------------------------------------
>>
>> Disclaimer:
>>
>> If you are not the intended recipient of this email, please notify
>> the sender and delete it.
>> Any unauthorized copying, disclosure or distribution of this email or
>> its attachment(s) is forbidden.
>> Thales Nederland BV will not accept liability for any damage caused
>> by this email or its attachment(s).
>> Thales Nederland BV is seated in Hengelo and is registered at the
>> Chamber of Commerce under number 06061578.
>> ------------------------------------------------------------------------------------------------------------
>>
>>
>> <joao.mourao.vcf>
>
> ---------------------------------------------------------
> Ernest Friedman-Hill
> Informatics & Decision Sciences Phone: (925) 294-2154
> Sandia National Labs
> PO Box 969, MS 9012 ejfried@...
> Livermore, CA 94550 http://www.jessrules.com
>
>
>
>
>
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> in the BODY of a message to majordomo@..., NOT to the list
> (use your own address!) List problems? Notify
> owner-jess-users@....
> --------------------------------------------------------------------
>

JESS: how to store and fetch between java & jess

2009-11-04T22:29:13Z

hi, everyone

I have a problem .

It works well when store a param in jess and fetch it in java, but it reports a error when store in java and fetch it in jess. the error is :" cannot find m" and so on.

who has once use "store-fetch " sucessfully, please give me some suggestions.

Is there any other way can pass a value from java to jess?

thank very much.

Esther Bai

Re: JESS: Re: Retrieve facts from Jess and re-instantiate them in Java

2009-11-04T07:55:36Z

If you're creating those "shadow facts" using "assert", as you've
shown here, then the OBJECT slot is empty, of course. They're not
really shadow facts if you create them that way, since there are no
objects for them to "shadow". Jess will never create the Java object
for you. You must create the Java object, give it to Jess (using
"definstance" or "add") and then Jess creates the shadow fact from
that, setting the OBJECT slot to point to the object.

On Nov 4, 2009, at 7:03 AM, Marco Zappatore wrote:

>
> Thanks for your suggestion.
> The modified JESS code snippet now looks like the following one:
>
> (defrule myRule
> ?fA <- (factA (slotA_name...) (slotB_name...))
> ?fB <- (factB (slotC_name...) (slotD_name...))
> =>
> (bind ?fC (assert
> (factC
> (slotE_name (?fA getSlotValue OBJECT))
> (slotF_name...)
> )
> ))
> )
> (call-my-java-method (?fc getSlotValue OBJECT)))
>
> I've used getSlotValue method two times in order to show you the
> following
> behaviour:
>
> The first one getSlotValue call works correctly and the actual ?fA
> fact is
> stored into slotE_name.
> The second call (?fc getSlotValue OBJECT) returns NIL both if used
> into
> the JESS side (as shown above) and if used in Java with
> val.factValue(context).getSlotValue("OBJECT").
> What's wrong in the binding operation?
>
> Thanks in advance
> Marco Zappatore
>
>
>
>
>
> Ernest Friedman-Hill wrote:
>>
>> Nothing wrong with that, if that's what you need to do. Every shadow
>> fact also has a slot named OBJECT which contains the actual object,
>> and so if you wanted to match that, you could call "getClass()" on it
>> rather than using Class.forName().
>>
>> Note if you use getShadowClassName() as suggested below, then you'll
>> get the name of the class used to define the template, which might be
>> an interface (in which case you can't instantiate it, of course.) If
>> you use the OBJECT slot, as I suggest, then you'll get the actual
>> class of the object behind the fact, and that may or may not be what
>> you actually want.
>>
>>
>>
>> On Nov 3, 2009, at 7:26 AM, Marco Zappatore wrote:
>>
>>>
>>> I think that a possible solution could be the following
>>>
>>> val.factValue(context).getDeftemplate().getShadowClassName()
>>>
>>> and then instantiate a new instance starting from the string that
>>> the above
>>> method returns...
>>>
>>> In any case, I'd like to know your opinion...
>>>
>>>
>>>
>>> Marco Zappatore wrote:
>>>>
>>>> Dear Jess users,
>>>> I have a rule "myrule" that fires whenever two facts with specific
>>>> slot
>>>> contents are found within the working memory.
>>>> These facts are shadow facts.
>>>> Then I have a java user function "myUserFunction" that passes those
>>>> two
>>>> facts (using their pointers, let's say ?f1 and ?f2) to a Java
>>>> program.
>>>> My question is: is it possible to get those facts and instantiate
>>>> them
>>>> again in Java?
>>>> In other words the procedure is:
>>>> 1) define a java bean
>>>> 2) assert shadow facts from that java bean with different slot
>>>> contents
>>>> each time
>>>> 3) find a given fact with a given content using a proper rule
>>>> 4) pass the fact to a java program
>>>> 5) create a new instance of the java bean with the content just
>>>> retrieved
>>>>
>>>> the problem resides at point n°5 because actually I'm using
>>>> Value val = vv.get(1).resolveValue(context);
>>>> Using val.factValue(context)) I can verify that the content is
>>>> correct but
>>>> how can I use val to instantiate a new Java Bean?
>>>>
>>>> Any help is appreciated, thanks in advance.
>>>>
>>>> Marco Zappatore
>>>>
>>>
>>> --
>>> View this message in context:
>>> http://old.nabble.com/Retrieve-facts-from-Jess-and-re-instantiate-them-in-Java-tp26160053p26160091.html
>>> Sent from the Jess mailing list archive at Nabble.com.
>>>
>>>
>>>
>>> --------------------------------------------------------------------
>>> To unsubscribe, send the words 'unsubscribe jess-users
>>> you@...'
>>> in the BODY of a message to majordomo@..., NOT to the list
>>> (use your own address!) List problems? Notify owner-jess-users@...
>>> .
>>> --------------------------------------------------------------------
>>
>> ---------------------------------------------------------
>> Ernest Friedman-Hill
>> Informatics & Decision Sciences, Sandia National Laboratories
>> PO Box 969, MS 9012, Livermore, CA 94550
>> http://www.jessrules.com
>>
>>
>>
>>
>>
>>
>>
>> --------------------------------------------------------------------
>> To unsubscribe, send the words 'unsubscribe jess-users you@...
>> '
>> in the BODY of a message to majordomo@..., NOT to the list
>> (use your own address!) List problems? Notify owner-jess-users@...
> --------------------------------------------------------------------
> To unsubscribe, send the words 'unsubscribe jess-users
> you@...'
> in the BODY of a message to majordomo@..., NOT to the list
> (use your own address!) List problems? Notify owner-jess-users@...
> .
> --------------------------------------------------------------------

Re: JESS: Re: Retrieve facts from Jess and re-instantiate them in Java

2009-11-04T04:03:36Z

Thanks for your suggestion.
The modified JESS code snippet now looks like the following one:

(defrule myRule
?fA <- (factA (slotA_name...) (slotB_name...))
?fB <- (factB (slotC_name...) (slotD_name...))
=>
(bind ?fC (assert
(factC
(slotE_name (?fA getSlotValue OBJECT))
(slotF_name...)
)
))
)
(call-my-java-method (?fc getSlotValue OBJECT)))

I've used getSlotValue method two times in order to show you the following
behaviour:

The first one getSlotValue call works correctly and the actual ?fA fact is
stored into slotE_name.
The second call (?fc getSlotValue OBJECT) returns NIL both if used into
the JESS side (as shown above) and if used in Java with
val.factValue(context).getSlotValue("OBJECT").
What's wrong in the binding operation?

Thanks in advance
Marco Zappatore

Ernest Friedman-Hill wrote:

>
> Nothing wrong with that, if that's what you need to do. Every shadow
> fact also has a slot named OBJECT which contains the actual object,
> and so if you wanted to match that, you could call "getClass()" on it
> rather than using Class.forName().
>
> Note if you use getShadowClassName() as suggested below, then you'll
> get the name of the class used to define the template, which might be
> an interface (in which case you can't instantiate it, of course.) If
> you use the OBJECT slot, as I suggest, then you'll get the actual
> class of the object behind the fact, and that may or may not be what
> you actually want.
>
>
>
> On Nov 3, 2009, at 7:26 AM, Marco Zappatore wrote:
>
>>
>> I think that a possible solution could be the following
>>
>> val.factValue(context).getDeftemplate().getShadowClassName()
>>
>> and then instantiate a new instance starting from the string that
>> the above
>> method returns...
>>
>> In any case, I'd like to know your opinion...
>>
>>
>>
>> Marco Zappatore wrote:
>>>
>>> Dear Jess users,
>>> I have a rule "myrule" that fires whenever two facts with specific
>>> slot
>>> contents are found within the working memory.
>>> These facts are shadow facts.
>>> Then I have a java user function "myUserFunction" that passes those
>>> two
>>> facts (using their pointers, let's say ?f1 and ?f2) to a Java
>>> program.
>>> My question is: is it possible to get those facts and instantiate
>>> them
>>> again in Java?
>>> In other words the procedure is:
>>> 1) define a java bean
>>> 2) assert shadow facts from that java bean with different slot
>>> contents
>>> each time
>>> 3) find a given fact with a given content using a proper rule
>>> 4) pass the fact to a java program
>>> 5) create a new instance of the java bean with the content just
>>> retrieved
>>>
>>> the problem resides at point n°5 because actually I'm using
>>> Value val = vv.get(1).resolveValue(context);
>>> Using val.factValue(context)) I can verify that the content is
>>> correct but
>>> how can I use val to instantiate a new Java Bean?
>>>
>>> Any help is appreciated, thanks in advance.
>>>
>>> Marco Zappatore
>>>
>>
>> --
>> View this message in context:
>> http://old.nabble.com/Retrieve-facts-from-Jess-and-re-instantiate-them-in-Java-tp26160053p26160091.html
>> Sent from the Jess mailing list archive at Nabble.com.
>>
>>
>>
>> --------------------------------------------------------------------
>> To unsubscribe, send the words 'unsubscribe jess-users
>> you@...'
>> in the BODY of a message to majordomo@..., NOT to the list
>> (use your own address!) List problems? Notify owner-jess-users@...
>> .
>> --------------------------------------------------------------------
>
> ---------------------------------------------------------
> Ernest Friedman-Hill
> Informatics & Decision Sciences, Sandia National Laboratories
> PO Box 969, MS 9012, Livermore, CA 94550
> http://www.jessrules.com
>
>
>
>
>
>
>
> --------------------------------------------------------------------
> To unsubscribe, send the words 'unsubscribe jess-users you@...'
> in the BODY of a message to majordomo@..., NOT to the list
> (use your own address!) List problems? Notify owner-jess-users@...

--------------------------------------------------------------------
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in the BODY of a message to majordomo@..., NOT to the list
(use your own address!) List problems? Notify owner-jess-users@....
--------------------------------------------------------------------

Re: JESS: Re: Retrieve facts from Jess and re-instantiate them in Java

2009-11-04T04:03:34Z

Thanks for your suggestion.
The modified JESS code snippet now looks like the following one:

(defrule myRule
?fA <- (factA (slotA_name...) (slotB_name...))
?fB <- (factB (slotC_name...) (slotD_name...))
=>
(bind ?fC (assert
(factC
(slotE_name (?fA getSlotValue OBJECT))
(slotF_name...)
)
))
)
(call-my-java-method (?fc getSlotValue OBJECT)))

I've used getSlotValue method two times in order to show you the following behaviour:

The first one getSlotValue call works correctly and the actual ?fA fact is stored into slotE_name.
The second call (?fc getSlotValue OBJECT) returns NIL both if used into the JESS side (as shown above) and if used in Java with val.factValue(context).getSlotValue("OBJECT").
What's wrong in the binding operation?

Thanks in advance
Marco Zappatore

Ernest Friedman-Hill wrote:

Nothing wrong with that, if that's what you need to do. Every shadow
fact also has a slot named OBJECT which contains the actual object,
and so if you wanted to match that, you could call "getClass()" on it
rather than using Class.forName().

Note if you use getShadowClassName() as suggested below, then you'll
get the name of the class used to define the template, which might be
an interface (in which case you can't instantiate it, of course.) If
you use the OBJECT slot, as I suggest, then you'll get the actual
class of the object behind the fact, and that may or may not be what
you actually want.

On Nov 3, 2009, at 7:26 AM, Marco Zappatore wrote:

>
> I think that a possible solution could be the following
>
> val.factValue(context).getDeftemplate().getShadowClassName()
>
> and then instantiate a new instance starting from the string that
> the above
> method returns...
>
> In any case, I'd like to know your opinion...
>
>
>
> Marco Zappatore wrote:
>>
>> Dear Jess users,
>> I have a rule "myrule" that fires whenever two facts with specific
>> slot
>> contents are found within the working memory.
>> These facts are shadow facts.
>> Then I have a java user function "myUserFunction" that passes those
>> two
>> facts (using their pointers, let's say ?f1 and ?f2) to a Java
>> program.
>> My question is: is it possible to get those facts and instantiate
>> them
>> again in Java?
>> In other words the procedure is:
>> 1) define a java bean
>> 2) assert shadow facts from that java bean with different slot
>> contents
>> each time
>> 3) find a given fact with a given content using a proper rule
>> 4) pass the fact to a java program
>> 5) create a new instance of the java bean with the content just
>> retrieved
>>
>> the problem resides at point n°5 because actually I'm using
>> Value val = vv.get(1).resolveValue(context);
>> Using val.factValue(context)) I can verify that the content is
>> correct but
>> how can I use val to instantiate a new Java Bean?
>>
>> Any help is appreciated, thanks in advance.
>>
>> Marco Zappatore
>>
>
> --
> View this message in context: http://old.nabble.com/Retrieve-facts-from-Jess-and-re-instantiate-them-in-Java-tp26160053p26160091.html
> Sent from the Jess mailing list archive at Nabble.com.
>
>
>
> --------------------------------------------------------------------
> To unsubscribe, send the words 'unsubscribe jess-users
> you@address.com'
> in the BODY of a message to majordomo@sandia.gov, NOT to the list
> (use your own address!) List problems? Notify owner-jess-users@sandia.gov
> .
> --------------------------------------------------------------------

---------------------------------------------------------
Ernest Friedman-Hill
Informatics & Decision Sciences, Sandia National Laboratories
PO Box 969, MS 9012, Livermore, CA 94550
http://www.jessrules.com

--------------------------------------------------------------------
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(use your own address!) List problems? Notify owner-jess-users@sandia.gov.
--------------------------------------------------------------------

Re: JESS: Interfaces and classes with shadow facts

2009-11-03T08:17:16Z

Jess treats classes and interfaces the same. Template inheritance
models a single-inheritance tree, and each object can be in working
memory just once, so there's no way to create multiple different trees
of templates to match the same set of facts.

The basic idea of what you've shown below should work fine; is there a
specific problem with it that I can help you with?

On Nov 3, 2009, at 8:40 AM, Joao Carlos Mourao wrote:

> Hello,
>
> I'm having some problems to use interfaces in Jess. I had make a
> search
> in the mailing list, and although there were some messages over the
> topic, i still was not able to really understand how the process
> works.
> The problem is basic: I have a set of classes C, and a respective
> set of
> interfaces I. I'm creating objects of classes C and adding to the
> working memory. I would like use the interfaces I to access this
> objects
> (in Jess). How?
>
> Solutions:
> a) should i declare the classes, and work with the classes, leaving
> the interfaces behind;
> b) declare the interfaces as (deftemplate I_name (declare
> (from-class C_name)); Doesn't work, because when i try to match in a
> rule, I_name is not the same as C_name, then Jess don't match
> c) have a combination of declarations of interfaces and classes,
> like Russ did in a previous message
> "r.eval("(defclass IInterface1 IInterface1)");
> r.eval("(defclass IInterface2 IInterface2 extends
> IInterface1)");
> r.eval("(defclass AbstractClassA AbstractClassA extends
> IInterface2)");
> r.eval("(defclass ClassB ClassB extends
> AbstractClassA)");
> r.eval("(defclass ClassC ClassC extends
> AbstractClassA)");
> r.eval("(defclass ClassD ClassD extends
> IInterface2)");"
> , which i have tried but haven't worked.
>
> Any ideas?
>
>
> Joao
>
> -unclassified
>
>
> ------------------------------------------------------------------------------------------------------------
> Disclaimer:
>
> If you are not the intended recipient of this email, please notify
> the sender and delete it.
> Any unauthorized copying, disclosure or distribution of this email
> or its attachment(s) is forbidden.
> Thales Nederland BV will not accept liability for any damage caused
> by this email or its attachment(s).
> Thales Nederland BV is seated in Hengelo and is registered at the
> Chamber of Commerce under number 06061578.
> ------------------------------------------------------------------------------------------------------------
>
> <joao.mourao.vcf>

Re: JESS: Re: Retrieve facts from Jess and re-instantiate them in Java

2009-11-03T08:13:20Z

Nothing wrong with that, if that's what you need to do. Every shadow
fact also has a slot named OBJECT which contains the actual object,
and so if you wanted to match that, you could call "getClass()" on it
rather than using Class.forName().

Note if you use getShadowClassName() as suggested below, then you'll
get the name of the class used to define the template, which might be
an interface (in which case you can't instantiate it, of course.) If
you use the OBJECT slot, as I suggest, then you'll get the actual
class of the object behind the fact, and that may or may not be what
you actually want.

On Nov 3, 2009, at 7:26 AM, Marco Zappatore wrote:

>
> I think that a possible solution could be the following
>
> val.factValue(context).getDeftemplate().getShadowClassName()
>
> and then instantiate a new instance starting from the string that
> the above
> method returns...
>
> In any case, I'd like to know your opinion...
>
>
>
> Marco Zappatore wrote:
>>
>> Dear Jess users,
>> I have a rule "myrule" that fires whenever two facts with specific
>> slot
>> contents are found within the working memory.
>> These facts are shadow facts.
>> Then I have a java user function "myUserFunction" that passes those
>> two
>> facts (using their pointers, let's say ?f1 and ?f2) to a Java
>> program.
>> My question is: is it possible to get those facts and instantiate
>> them
>> again in Java?
>> In other words the procedure is:
>> 1) define a java bean
>> 2) assert shadow facts from that java bean with different slot
>> contents
>> each time
>> 3) find a given fact with a given content using a proper rule
>> 4) pass the fact to a java program
>> 5) create a new instance of the java bean with the content just
>> retrieved
>>
>> the problem resides at point n°5 because actually I'm using
>> Value val = vv.get(1).resolveValue(context);
>> Using val.factValue(context)) I can verify that the content is
>> correct but
>> how can I use val to instantiate a new Java Bean?
>>
>> Any help is appreciated, thanks in advance.
>>
>> Marco Zappatore
>>
>
> --
> View this message in context: http://old.nabble.com/Retrieve-facts-from-Jess-and-re-instantiate-them-in-Java-tp26160053p26160091.html
> Sent from the Jess mailing list archive at Nabble.com.
>
>
>
> --------------------------------------------------------------------
> To unsubscribe, send the words 'unsubscribe jess-users
> you@...'
> in the BODY of a message to majordomo@..., NOT to the list
> (use your own address!) List problems? Notify owner-jess-users@...
> .
> --------------------------------------------------------------------

JESS: Interfaces and classes with shadow facts

2009-11-03T05:40:39Z

Hello,

I'm having some problems to use interfaces in Jess. I had make a search
in the mailing list, and although there were some messages over the
topic, i still was not able to really understand how the process works.
The problem is basic: I have a set of classes C, and a respective set of
interfaces I. I'm creating objects of classes C and adding to the
working memory. I would like use the interfaces I to access this objects
(in Jess). How?

Solutions:
a) should i declare the classes, and work with the classes, leaving
the interfaces behind;
b) declare the interfaces as (deftemplate I_name (declare
(from-class C_name)); Doesn't work, because when i try to match in a
rule, I_name is not the same as C_name, then Jess don't match
c) have a combination of declarations of interfaces and classes,
like Russ did in a previous message
"r.eval("(defclass IInterface1 IInterface1)");
r.eval("(defclass IInterface2 IInterface2 extends
IInterface1)");
r.eval("(defclass AbstractClassA AbstractClassA extends
IInterface2)");
r.eval("(defclass ClassB ClassB extends AbstractClassA)");
r.eval("(defclass ClassC ClassC extends AbstractClassA)");
r.eval("(defclass ClassD ClassD extends IInterface2)");"
, which i have tried but haven't worked.

Any ideas?

Joao

-unclassified

------------------------------------------------------------------------------------------------------------
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If you are not the intended recipient of this email, please notify the sender and delete it.
Any unauthorized copying, disclosure or distribution of this email or its attachment(s) is forbidden.
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Re: Retrieve facts from Jess and re-instantiate them in Java

2009-11-03T04:26:32Z

I think that a possible solution could be the following

val.factValue(context).getDeftemplate().getShadowClassName()

and then instantiate a new instance starting from the string that the above method returns...

In any case, I'd like to know your opinion...

Marco Zappatore wrote:

Dear Jess users,
I have a rule "myrule" that fires whenever two facts with specific slot contents are found within the working memory.
These facts are shadow facts.
Then I have a java user function "myUserFunction" that passes those two facts (using their pointers, let's say ?f1 and ?f2) to a Java program.
My question is: is it possible to get those facts and instantiate them again in Java?
In other words the procedure is:
1) define a java bean
2) assert shadow facts from that java bean with different slot contents each time
3) find a given fact with a given content using a proper rule
4) pass the fact to a java program
5) create a new instance of the java bean with the content just retrieved

the problem resides at point n°5 because actually I'm using
Value val = vv.get(1).resolveValue(context);
Using val.factValue(context)) I can verify that the content is correct but how can I use val to instantiate a new Java Bean?

Any help is appreciated, thanks in advance.

Marco Zappatore

JESS: Re: Retrieve facts from Jess and re-instantiate them in Java

2009-11-03T04:26:32Z

I think that a possible solution could be the following

val.factValue(context).getDeftemplate().getShadowClassName()

and then instantiate a new instance starting from the string that the above
method returns...

In any case, I'd like to know your opinion...

Marco Zappatore wrote:

>
> Dear Jess users,
> I have a rule "myrule" that fires whenever two facts with specific slot
> contents are found within the working memory.
> These facts are shadow facts.
> Then I have a java user function "myUserFunction" that passes those two
> facts (using their pointers, let's say ?f1 and ?f2) to a Java program.
> My question is: is it possible to get those facts and instantiate them
> again in Java?
> In other words the procedure is:
> 1) define a java bean
> 2) assert shadow facts from that java bean with different slot contents
> each time
> 3) find a given fact with a given content using a proper rule
> 4) pass the fact to a java program
> 5) create a new instance of the java bean with the content just retrieved
>
> the problem resides at point n°5 because actually I'm using
> Value val = vv.get(1).resolveValue(context);
> Using val.factValue(context)) I can verify that the content is correct but
> how can I use val to instantiate a new Java Bean?
>
> Any help is appreciated, thanks in advance.
>
> Marco Zappatore
>

--
View this message in context: http://old.nabble.com/Retrieve-facts-from-Jess-and-re-instantiate-them-in-Java-tp26160053p26160091.html
Sent from the Jess mailing list archive at Nabble.com.

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Retrieve facts from Jess and re-instantiate them in Java

2009-11-03T02:30:24Z

Dear Jess users,
I have a rule "myrule" that fires whenever two facts with specific slot contents are found within the working memory.
These facts are shadow facts.
Then I have a java user function "myUserFunction" that passes those two facts (using their pointers, let's say ?f1 and ?f2) to a Java program.
My question is: is it possible to get those facts and instantiate them again in Java?
In other words the procedure is:
1) define a java bean
2) assert shadow facts from that java bean with different slot contents each time
3) find a given fact with a given content using a proper rule
4) pass the fact to a java program
5) create a new instance of the java bean with the content just retrieved

the problem resides at point n°5 because actually I'm using
Value val = vv.get(1).resolveValue(context);
Using val.factValue(context)) I can verify that the content is correct but how can I use val to instantiate a new Java Bean?

Any help is appreciated, thanks in advance.

Marco Zappatore

Re: JESS: Re: the problem of query working memory

2009-10-29T21:02:54Z

the problem has been solved, thanks a lot.

On Fri, Oct 30, 2009 at 9:55 AM, Nopphadol Chalortham <nopphadolc@...> wrote:

I think this code, It may be work.

QueryResult result = engine.runQueryStar("mid1", new ValueVector().add(jf).add(I));

On Thu, Oct 29, 2009 at 3:40 PM, Weijing Bai <estherbaiweijing@...> wrote:

i just slove it by change the code to :

result = engine.runQueryStar(sRule, vv );

hope it can help u.

On Thu, Oct 29, 2009 at 4:28 PM, Weijing Bai <estherbaiweijing@...> wrote:

i hava a problem when use runQueryStar with two params. with only one param situation it can works well. but with two params it's report:

Jess reported an error in routine runQuery.
Message: Wrong number of variables for query mid1.
at jess.Rete.doRunQuery(Rete.java:2889)
at jess.Rete.runQueryStar(Rete.java:2824)
at jess.Rete.runQueryStar(Rete.java:2807)
at test.MidCengSequence(test.java:255)
at test.TOSequenceADL(test.java:394)
at test.main(test.java:492)

the program is:

     ValueVector vv = new ValueVector();
      vv.add(jf);
      vv.add(I);
      Value myList = new Value(vv, RU.LIST);

      result = engine.runQueryStar(sRule, new ValueVector().add(myList) );

the clp is :

(defquery mid1
(declare (variables ?x ?i))
    f1<- ();

     f2<-();

)

thanks very much!

Re: JESS: Re: the problem of query working memory

2009-10-29T18:55:32Z

I think this code, It may be work.

QueryResult result = engine.runQueryStar("mid1", new ValueVector().add(jf).add(I));

On Thu, Oct 29, 2009 at 3:40 PM, Weijing Bai <estherbaiweijing@...> wrote:

i just slove it by change the code to :

result = engine.runQueryStar(sRule, vv );

hope it can help u.

On Thu, Oct 29, 2009 at 4:28 PM, Weijing Bai <estherbaiweijing@...> wrote:

i hava a problem when use runQueryStar with two params. with only one param situation it can works well. but with two params it's report:

Jess reported an error in routine runQuery.
Message: Wrong number of variables for query mid1.
at jess.Rete.doRunQuery(Rete.java:2889)
at jess.Rete.runQueryStar(Rete.java:2824)
at jess.Rete.runQueryStar(Rete.java:2807)
at test.MidCengSequence(test.java:255)
at test.TOSequenceADL(test.java:394)
at test.main(test.java:492)

the program is:

     ValueVector vv = new ValueVector();
      vv.add(jf);
      vv.add(I);
      Value myList = new Value(vv, RU.LIST);

      result = engine.runQueryStar(sRule, new ValueVector().add(myList) );

the clp is :

(defquery mid1
(declare (variables ?x ?i))
    f1<- ();

     f2<-();

)

thanks very much!

JESS: Re: the problem of query working memory

2009-10-29T01:40:26Z

i just slove it by change the code to :

result = engine.runQueryStar(sRule, vv );

hope it can help u.

On Thu, Oct 29, 2009 at 4:28 PM, Weijing Bai <estherbaiweijing@...> wrote:

i hava a problem when use runQueryStar with two params. with only one param situation it can works well. but with two params it's report:

Jess reported an error in routine runQuery.
Message: Wrong number of variables for query mid1.
at jess.Rete.doRunQuery(Rete.java:2889)
at jess.Rete.runQueryStar(Rete.java:2824)
at jess.Rete.runQueryStar(Rete.java:2807)
at test.MidCengSequence(test.java:255)
at test.TOSequenceADL(test.java:394)
at test.main(test.java:492)

the program is:

     ValueVector vv = new ValueVector();
      vv.add(jf);
      vv.add(I);
      Value myList = new Value(vv, RU.LIST);

      result = engine.runQueryStar(sRule, new ValueVector().add(myList) );

the clp is :

(defquery mid1
(declare (variables ?x ?i))
    f1<- ();

     f2<-();

)

thanks very much!

JESS: the problem of query working memory

2009-10-29T01:28:11Z

i hava a problem when use runQueryStar with two params. with only one param situation it can works well. but with two params it's report:

Jess reported an error in routine runQuery.
Message: Wrong number of variables for query mid1.
at jess.Rete.doRunQuery(Rete.java:2889)
at jess.Rete.runQueryStar(Rete.java:2824)
at jess.Rete.runQueryStar(Rete.java:2807)
at test.MidCengSequence(test.java:255)
at test.TOSequenceADL(test.java:394)
at test.main(test.java:492)

the program is:

     ValueVector vv = new ValueVector();
      vv.add(jf);
      vv.add(I);
      Value myList = new Value(vv, RU.LIST);

result = engine.runQueryStar(sRule, new ValueVector().add(myList) );

the clp is :

(defquery mid1
(declare (variables ?x ?i))
f1<- ();

f2<-();

)

thanks very much!

Re: JESS: How to load a rule file in a remote RMI client.

2009-10-24T09:32:20Z

If the "run" call is not in the file, then you'd get it however you
get anything in JavaSpaces (I have no idea personally). So you must be
thinking the "run" command would be the last line of the batched
script? The "parse" function returns that value of the last evaluated
expression, so if the file ends in (run), the return value of parse()
will be the number of rules fired.

On Oct 24, 2009, at 10:58 AM, Andrew Meng wrote:

>
> I got that part, thanks a lot for helping me at weekend!
>
>
>
> And after executing paser.parse(false), how do I get the return
> value(the number of rules fired) of engine.run() method?
>
>
>> From: ejfried@...
>> To: jess-users@...
>> Subject: Re: JESS: How to load a rule file in a remote RMI client.
>> Date: Sat, 24 Oct 2009 10:52:22 -0400
>>
>> You want to send the file contents as a String to the remote host,
>> and
>> let the remote host parse it and run it.
>>
>> On Oct 24, 2009, at 12:01 AM, Andrew Meng wrote:
>>
>>>
>>> but the document says "Instances of Jesp are not serializable, as
>>> they hold a reference to a Reader." Therefore RMI can not serialize
>>> it to the remote host.
>>>
>>>
>>>
>>> And after run paser.parse(false), how do I get the result of
>>> engine.run(the number of rules fired)?
>>>
>>>
>>>
>>> Thanks,
>>>
>>> Andrew
>>>
>>>
>>>
>>>
>>>
>>>
>>>
>>>> From: ejfried@...
>>>> To: jess-users@...
>>>> Subject: Re: JESS: How to load a rule file in a remote RMI client.
>>>> Date: Fri, 23 Oct 2009 23:20:07 -0400
>>>>
>>>> It's very easy. See
>>>>
>>>> http://www.jessrules.com/jess/docs/71/library.html#jess.Jesp
>>>>
>>>> Follow the first example, but use a StringReader instead of the
>>>> FileReader.
>>>>
>>>>
>>>> On Oct 23, 2009, at 10:28 PM, Andrew Meng wrote:
>>>>
>>>>>
>>>>> Thanks a lot for the quick reply!
>>>>>
>>>>> As a workaround, I did copy the xxx.clp over to the remote
>>>>> machine.
>>>>>
>>>>>
>>>>>
>>>>> However I want to make a generic remote worker who just takes a
>>>>> task
>>>>> from JavaSpace and execute task.execute(). My task is like:
>>>>>
>>>>>
>>>>>
>>>>> class task{
>>>>>
>>>>> ...
>>>>>
>>>>> public Object execute(){
>>>>>
>>>>> ...
>>>>>
>>>>> engine.batch("xxx.clp");
>>>>>
>>>>> if (engine.run() > 1) { does something and return}
>>>>>
>>>>> }
>>>>>
>>>>> }
>>>>>
>>>>>
>>>>> Yes, I can read the xxx.clp into a string as a part of the task
>>>>> object which will be serialized to the remote host by RMI. After
>>>>> reading Jesp API and JIA book, I still could not figure out the
>>>>> Jesp
>>>>> syntax to do what I want to do.
>>>>>
>>>>>
>>>>>
>>>>> Can you please elaborate more?
>>>>>
>>>>>
>>>>>
>>>>> Thanks a lot,
>>>>>
>>>>> Andrew
>>>>>
>>>>>
>>>>>> From: ejfried@...
>>>>>> To: jess-users@...
>>>>>> Subject: Re: JESS: How to load a rule file in a remote RMI
>>>>>> client.
>>>>>> Date: Fri, 23 Oct 2009 20:46:09 -0400
>>>>>>
>>>>>> If you want a process on a remote machine to open a file by name,
>>>>>> then
>>>>>> of course you'd need to transmit the file. But you can instead
>>>>>> read
>>>>>> the file into a String and send the String around; then use a
>>>>>> StringReader and the jess.Jesp class to run the code on the
>>>>>> remote
>>>>>> machines (see the Jess manual on how to use jess.Jesp to parse
>>>>>> Jess
>>>>>> code.)
>>>>>>
>>>>>>
>>>>>> On Oct 18, 2009, at 10:41 PM, ameng wrote:
>>>>>>
>>>>>>>
>>>>>>> Hello,
>>>>>>>
>>>>>>> I am trying to integrate Jess with JavaSpace(RMI). Tasks(running
>>>>>>> rete.batch("rule.clp")) put into a JavaSpace got following
>>>>>>> exception on
>>>>>>> the remote machine:
>>>>>>>
>>>>>>> Jess reported an error in routine batch.
>>>>>>> Message: Cannot open file.
>>>>>>> at jess.Batch.findDocument(Batch.java:221)
>>>>>>> at jess.Batch.batch(Batch.java:122)
>>>>>>> at jess.Batch.batch(Batch.java:113)
>>>>>>> at jess.Batch.batch(Batch.java:75)
>>>>>>> at jess.Batch.batch(Batch.java:40)
>>>>>>> at jess.Rete.batch(Rete.java:2791)
>>>>>>>
>>>>>>> What are the options here to pass the rules file to remote rete
>>>>>>> engine?
>>>>>>>
>>>>>>> Thanks a lot,
>>>>>>> Andrew
>>>>>>> --
>>>>>>> View this message in context: http://www.nabble.com/How-to-load-a-rule-file-in-a-remote-RMI-client.-tp25952603p25952603.html
>>>>>>> Sent from the Jess mailing list archive at Nabble.com.
>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>> --------------------------------------------------------------------
>>>>>>> To unsubscribe, send the words 'unsubscribe jess-users
>>>>>>> you@...'
>>>>>>> in the BODY of a message to majordomo@..., NOT to the
>>>>>>> list
>>>>>>> (use your own address!) List problems? Notify owner-jess-users@...
>>>>>>> .
>>>>>>> --------------------------------------------------------------------
>>>>>>
>>>>>> ---------------------------------------------------------
>>>>>> Ernest Friedman-Hill
>>>>>> Informatics & Decision Sciences, Sandia National Laboratories
>>>>>> PO Box 969, MS 9012, Livermore, CA 94550
>>>>>> http://www.jessrules.com
>>>>>>
>>>>>>
>>>>>>
>>>>>>
>>>>>>
>>>>>>
>>>>>>
>>>>>> --------------------------------------------------------------------
>>>>>> To unsubscribe, send the words 'unsubscribe jess-users you@...
>>>>>> '
>>>>>> in the BODY of a message to majordomo@..., NOT to the list
>>>>>> (use your own address!) List problems? Notify owner-jess-users@...
>>>>
>>>> ---------------------------------------------------------
>>>> Ernest Friedman-Hill
>>>> Informatics & Decision Sciences, Sandia National Laboratories
>>>> PO Box 969, MS 9012, Livermore, CA 94550
>>>> http://www.jessrules.com
>>>>
>>>>
>>>>
>>>>
>>>>
>>>>
>>>>
>>>> --------------------------------------------------------------------
>>>> To unsubscribe, send the words 'unsubscribe jess-users you@...
>>>> '
>>>> in the BODY of a message to majordomo@..., NOT to the list
>>>> (use your own address!) List problems? Notify owner-jess-users@...
>>
>> ---------------------------------------------------------
>> Ernest Friedman-Hill
>> Informatics & Decision Sciences Phone: (925) 294-2154
>> Sandia National Labs
>> PO Box 969, MS 9012 ejfried@...
>> Livermore, CA 94550 http://www.jessrules.com
>>
>>
>>
>>
>>
>> --------------------------------------------------------------------
>> To unsubscribe, send the words 'unsubscribe jess-users you@...
>> '
>> in the BODY of a message to majordomo@..., NOT to the list
>> (use your own address!) List problems? Notify owner-jess-users@...

RE: JESS: How to load a rule file in a remote RMI client.

2009-10-24T07:58:42Z

I got that part, thanks a lot for helping me at weekend!

And after executing paser.parse(false), how do I get the return value(the number of rules fired) of engine.run() method?

> From: ejfried@...
> To: jess-users@...
> Subject: Re: JESS: How to load a rule file in a remote RMI client.
> Date: Sat, 24 Oct 2009 10:52:22 -0400
>
> You want to send the file contents as a String to the remote host, and
> let the remote host parse it and run it.
>
> On Oct 24, 2009, at 12:01 AM, Andrew Meng wrote:
>
> >
> > but the document says "Instances of Jesp are not serializable, as
> > they hold a reference to a Reader." Therefore RMI can not serialize
> > it to the remote host.
> >
> >
> >
> > And after run paser.parse(false), how do I get the result of
> > engine.run(the number of rules fired)?
> >
> >
> >
> > Thanks,
> >
> > Andrew
> >
> >
> >
> >
> >
> >
> >
> >> From: ejfried@...
> >> To: jess-users@...
> >> Subject: Re: JESS: How to load a rule file in a remote RMI client.
> >> Date: Fri, 23 Oct 2009 23:20:07 -0400
> >>
> >> It's very easy. See
> >>
> >> http://www.jessrules.com/jess/docs/71/library.html#jess.Jesp
> >>
> >> Follow the first example, but use a StringReader instead of the
> >> FileReader.
> >>
> >>
> >> On Oct 23, 2009, at 10:28 PM, Andrew Meng wrote:
> >>
> >>>
> >>> Thanks a lot for the quick reply!
> >>>
> >>> As a workaround, I did copy the xxx.clp over to the remote machine.
> >>>
> >>>
> >>>
> >>> However I want to make a generic remote worker who just takes a task
> >>> from JavaSpace and execute task.execute(). My task is like:
> >>>
> >>>
> >>>
> >>> class task{
> >>>
> >>> ...
> >>>
> >>> public Object execute(){
> >>>
> >>> ...
> >>>
> >>> engine.batch("xxx.clp");
> >>>
> >>> if (engine.run() > 1) { does something and return}
> >>>
> >>> }
> >>>
> >>> }
> >>>
> >>>
> >>> Yes, I can read the xxx.clp into a string as a part of the task
> >>> object which will be serialized to the remote host by RMI. After
> >>> reading Jesp API and JIA book, I still could not figure out the Jesp
> >>> syntax to do what I want to do.
> >>>
> >>>
> >>>
> >>> Can you please elaborate more?
> >>>
> >>>
> >>>
> >>> Thanks a lot,
> >>>
> >>> Andrew
> >>>
> >>>
> >>>> From: ejfried@...
> >>>> To: jess-users@...
> >>>> Subject: Re: JESS: How to load a rule file in a remote RMI client.
> >>>> Date: Fri, 23 Oct 2009 20:46:09 -0400
> >>>>
> >>>> If you want a process on a remote machine to open a file by name,
> >>>> then
> >>>> of course you'd need to transmit the file. But you can instead read
> >>>> the file into a String and send the String around; then use a
> >>>> StringReader and the jess.Jesp class to run the code on the remote
> >>>> machines (see the Jess manual on how to use jess.Jesp to parse Jess
> >>>> code.)
> >>>>
> >>>>
> >>>> On Oct 18, 2009, at 10:41 PM, ameng wrote:
> >>>>
> >>>>>
> >>>>> Hello,
> >>>>>
> >>>>> I am trying to integrate Jess with JavaSpace(RMI). Tasks(running
> >>>>> rete.batch("rule.clp")) put into a JavaSpace got following
> >>>>> exception on
> >>>>> the remote machine:
> >>>>>
> >>>>> Jess reported an error in routine batch.
> >>>>> Message: Cannot open file.
> >>>>> at jess.Batch.findDocument(Batch.java:221)
> >>>>> at jess.Batch.batch(Batch.java:122)
> >>>>> at jess.Batch.batch(Batch.java:113)
> >>>>> at jess.Batch.batch(Batch.java:75)
> >>>>> at jess.Batch.batch(Batch.java:40)
> >>>>> at jess.Rete.batch(Rete.java:2791)
> >>>>>
> >>>>> What are the options here to pass the rules file to remote rete
> >>>>> engine?
> >>>>>
> >>>>> Thanks a lot,
> >>>>> Andrew
> >>>>> --
> >>>>> View this message in context: http://www.nabble.com/How-to-load-a-rule-file-in-a-remote-RMI-client.-tp25952603p25952603.html
> >>>>> Sent from the Jess mailing list archive at Nabble.com.
> >>>>>
> >>>>>
> >>>>>
> >>>>> --------------------------------------------------------------------
> >>>>> To unsubscribe, send the words 'unsubscribe jess-users
> >>>>> you@...'
> >>>>> in the BODY of a message to majordomo@..., NOT to the list
> >>>>> (use your own address!) List problems? Notify owner-jess-users@...
> >>>>> .
> >>>>> --------------------------------------------------------------------
> >>>>
> >>>> ---------------------------------------------------------
> >>>> Ernest Friedman-Hill
> >>>> Informatics & Decision Sciences, Sandia National Laboratories
> >>>> PO Box 969, MS 9012, Livermore, CA 94550
> >>>> http://www.jessrules.com
> >>>>
> >>>>
> >>>>
> >>>>
> >>>>
> >>>>
> >>>>
> >>>> --------------------------------------------------------------------
> >>>> To unsubscribe, send the words 'unsubscribe jess-users you@...
> >>>> '
> >>>> in the BODY of a message to majordomo@..., NOT to the list
> >>>> (use your own address!) List problems? Notify owner-jess-users@...
> >>
> >> ---------------------------------------------------------
> >> Ernest Friedman-Hill
> >> Informatics & Decision Sciences, Sandia National Laboratories
> >> PO Box 969, MS 9012, Livermore, CA 94550
> >> http://www.jessrules.com
> >>
> >>
> >>
> >>
> >>
> >>
> >>
> >> --------------------------------------------------------------------
> >> To unsubscribe, send the words 'unsubscribe jess-users you@...
> >> '
> >> in the BODY of a message to majordomo@..., NOT to the list
> >> (use your own address!) List problems? Notify owner-jess-users@...
>
> ---------------------------------------------------------
> Ernest Friedman-Hill
> Informatics & Decision Sciences Phone: (925) 294-2154
> Sandia National Labs
> PO Box 969, MS 9012 ejfried@...
> Livermore, CA 94550 http://www.jessrules.com
>
>
>
>
>
> --------------------------------------------------------------------
> To unsubscribe, send the words 'unsubscribe jess-users you@...'
> in the BODY of a message to majordomo@..., NOT to the list
> (use your own address!) List problems? Notify owner-jess-users@...

Re: JESS: How to load a rule file in a remote RMI client.

2009-10-24T07:52:22Z

You want to send the file contents as a String to the remote host, and
let the remote host parse it and run it.

On Oct 24, 2009, at 12:01 AM, Andrew Meng wrote:

>
> but the document says "Instances of Jesp are not serializable, as
> they hold a reference to a Reader." Therefore RMI can not serialize
> it to the remote host.
>
>
>
> And after run paser.parse(false), how do I get the result of
> engine.run(the number of rules fired)?
>
>
>
> Thanks,
>
> Andrew
>
>
>
>
>
>
>
>> From: ejfried@...
>> To: jess-users@...
>> Subject: Re: JESS: How to load a rule file in a remote RMI client.
>> Date: Fri, 23 Oct 2009 23:20:07 -0400
>>
>> It's very easy. See
>>
>> http://www.jessrules.com/jess/docs/71/library.html#jess.Jesp
>>
>> Follow the first example, but use a StringReader instead of the
>> FileReader.
>>
>>
>> On Oct 23, 2009, at 10:28 PM, Andrew Meng wrote:
>>
>>>
>>> Thanks a lot for the quick reply!
>>>
>>> As a workaround, I did copy the xxx.clp over to the remote machine.
>>>
>>>
>>>
>>> However I want to make a generic remote worker who just takes a task
>>> from JavaSpace and execute task.execute(). My task is like:
>>>
>>>
>>>
>>> class task{
>>>
>>> ...
>>>
>>> public Object execute(){
>>>
>>> ...
>>>
>>> engine.batch("xxx.clp");
>>>
>>> if (engine.run() > 1) { does something and return}
>>>
>>> }
>>>
>>> }
>>>
>>>
>>> Yes, I can read the xxx.clp into a string as a part of the task
>>> object which will be serialized to the remote host by RMI. After
>>> reading Jesp API and JIA book, I still could not figure out the Jesp
>>> syntax to do what I want to do.
>>>
>>>
>>>
>>> Can you please elaborate more?
>>>
>>>
>>>
>>> Thanks a lot,
>>>
>>> Andrew
>>>
>>>
>>>> From: ejfried@...
>>>> To: jess-users@...
>>>> Subject: Re: JESS: How to load a rule file in a remote RMI client.
>>>> Date: Fri, 23 Oct 2009 20:46:09 -0400
>>>>
>>>> If you want a process on a remote machine to open a file by name,
>>>> then
>>>> of course you'd need to transmit the file. But you can instead read
>>>> the file into a String and send the String around; then use a
>>>> StringReader and the jess.Jesp class to run the code on the remote
>>>> machines (see the Jess manual on how to use jess.Jesp to parse Jess
>>>> code.)
>>>>
>>>>
>>>> On Oct 18, 2009, at 10:41 PM, ameng wrote:
>>>>
>>>>>
>>>>> Hello,
>>>>>
>>>>> I am trying to integrate Jess with JavaSpace(RMI). Tasks(running
>>>>> rete.batch("rule.clp")) put into a JavaSpace got following
>>>>> exception on
>>>>> the remote machine:
>>>>>
>>>>> Jess reported an error in routine batch.
>>>>> Message: Cannot open file.
>>>>> at jess.Batch.findDocument(Batch.java:221)
>>>>> at jess.Batch.batch(Batch.java:122)
>>>>> at jess.Batch.batch(Batch.java:113)
>>>>> at jess.Batch.batch(Batch.java:75)
>>>>> at jess.Batch.batch(Batch.java:40)
>>>>> at jess.Rete.batch(Rete.java:2791)
>>>>>
>>>>> What are the options here to pass the rules file to remote rete
>>>>> engine?
>>>>>
>>>>> Thanks a lot,
>>>>> Andrew
>>>>> --
>>>>> View this message in context: http://www.nabble.com/How-to-load-a-rule-file-in-a-remote-RMI-client.-tp25952603p25952603.html
>>>>> Sent from the Jess mailing list archive at Nabble.com.
>>>>>
>>>>>
>>>>>
>>>>> --------------------------------------------------------------------
>>>>> To unsubscribe, send the words 'unsubscribe jess-users
>>>>> you@...'
>>>>> in the BODY of a message to majordomo@..., NOT to the list
>>>>> (use your own address!) List problems? Notify owner-jess-users@...
>>>>> .
>>>>> --------------------------------------------------------------------
>>>>
>>>> ---------------------------------------------------------
>>>> Ernest Friedman-Hill
>>>> Informatics & Decision Sciences, Sandia National Laboratories
>>>> PO Box 969, MS 9012, Livermore, CA 94550
>>>> http://www.jessrules.com
>>>>
>>>>
>>>>
>>>>
>>>>
>>>>
>>>>
>>>> --------------------------------------------------------------------
>>>> To unsubscribe, send the words 'unsubscribe jess-users you@...
>>>> '
>>>> in the BODY of a message to majordomo@..., NOT to the list
>>>> (use your own address!) List problems? Notify owner-jess-users@...
>>
>> ---------------------------------------------------------
>> Ernest Friedman-Hill
>> Informatics & Decision Sciences, Sandia National Laboratories
>> PO Box 969, MS 9012, Livermore, CA 94550
>> http://www.jessrules.com
>>
>>
>>
>>
>>
>>
>>
>> --------------------------------------------------------------------
>> To unsubscribe, send the words 'unsubscribe jess-users you@...
>> '
>> in the BODY of a message to majordomo@..., NOT to the list
>> (use your own address!) List problems? Notify owner-jess-users@...

RE: JESS: How to load a rule file in a remote RMI client.

2009-10-23T21:01:13Z

but the document says "Instances of Jesp are not serializable, as they hold a reference to a Reader." Therefore RMI can not serialize it to the remote host.

And after run paser.parse(false), how do I get the result of engine.run(the number of rules fired)?

Thanks,

Andrew

> From: ejfried@...
> To: jess-users@...
> Subject: Re: JESS: How to load a rule file in a remote RMI client.
> Date: Fri, 23 Oct 2009 23:20:07 -0400
>
> It's very easy. See
>
> http://www.jessrules.com/jess/docs/71/library.html#jess.Jesp
>
> Follow the first example, but use a StringReader instead of the
> FileReader.
>
>
> On Oct 23, 2009, at 10:28 PM, Andrew Meng wrote:
>
> >
> > Thanks a lot for the quick reply!
> >
> > As a workaround, I did copy the xxx.clp over to the remote machine.
> >
> >
> >
> > However I want to make a generic remote worker who just takes a task
> > from JavaSpace and execute task.execute(). My task is like:
> >
> >
> >
> > class task{
> >
> > ...
> >
> > public Object execute(){
> >
> > ...
> >
> > engine.batch("xxx.clp");
> >
> > if (engine.run() > 1) { does something and return}
> >
> > }
> >
> > }
> >
> >
> > Yes, I can read the xxx.clp into a string as a part of the task
> > object which will be serialized to the remote host by RMI. After
> > reading Jesp API and JIA book, I still could not figure out the Jesp
> > syntax to do what I want to do.
> >
> >
> >
> > Can you please elaborate more?
> >
> >
> >
> > Thanks a lot,
> >
> > Andrew
> >
> >
> >> From: ejfried@...
> >> To: jess-users@...
> >> Subject: Re: JESS: How to load a rule file in a remote RMI client.
> >> Date: Fri, 23 Oct 2009 20:46:09 -0400
> >>
> >> If you want a process on a remote machine to open a file by name,
> >> then
> >> of course you'd need to transmit the file. But you can instead read
> >> the file into a String and send the String around; then use a
> >> StringReader and the jess.Jesp class to run the code on the remote
> >> machines (see the Jess manual on how to use jess.Jesp to parse Jess
> >> code.)
> >>
> >>
> >> On Oct 18, 2009, at 10:41 PM, ameng wrote:
> >>
> >>>
> >>> Hello,
> >>>
> >>> I am trying to integrate Jess with JavaSpace(RMI). Tasks(running
> >>> rete.batch("rule.clp")) put into a JavaSpace got following
> >>> exception on
> >>> the remote machine:
> >>>
> >>> Jess reported an error in routine batch.
> >>> Message: Cannot open file.
> >>> at jess.Batch.findDocument(Batch.java:221)
> >>> at jess.Batch.batch(Batch.java:122)
> >>> at jess.Batch.batch(Batch.java:113)
> >>> at jess.Batch.batch(Batch.java:75)
> >>> at jess.Batch.batch(Batch.java:40)
> >>> at jess.Rete.batch(Rete.java:2791)
> >>>
> >>> What are the options here to pass the rules file to remote rete
> >>> engine?
> >>>
> >>> Thanks a lot,
> >>> Andrew
> >>> --
> >>> View this message in context: http://www.nabble.com/How-to-load-a-rule-file-in-a-remote-RMI-client.-tp25952603p25952603.html
> >>> Sent from the Jess mailing list archive at Nabble.com.
> >>>
> >>>
> >>>
> >>> --------------------------------------------------------------------
> >>> To unsubscribe, send the words 'unsubscribe jess-users
> >>> you@...'
> >>> in the BODY of a message to majordomo@..., NOT to the list
> >>> (use your own address!) List problems? Notify owner-jess-users@...
> >>> .
> >>> --------------------------------------------------------------------
> >>
> >> ---------------------------------------------------------
> >> Ernest Friedman-Hill
> >> Informatics & Decision Sciences, Sandia National Laboratories
> >> PO Box 969, MS 9012, Livermore, CA 94550
> >> http://www.jessrules.com
> >>
> >>
> >>
> >>
> >>
> >>
> >>
> >> --------------------------------------------------------------------
> >> To unsubscribe, send the words 'unsubscribe jess-users you@...
> >> '
> >> in the BODY of a message to majordomo@..., NOT to the list
> >> (use your own address!) List problems? Notify owner-jess-users@...
>
> ---------------------------------------------------------
> Ernest Friedman-Hill
> Informatics & Decision Sciences, Sandia National Laboratories
> PO Box 969, MS 9012, Livermore, CA 94550
> http://www.jessrules.com
>
>
>
>
>
>
>
> --------------------------------------------------------------------
> To unsubscribe, send the words 'unsubscribe jess-users you@...'
> in the BODY of a message to majordomo@..., NOT to the list
> (use your own address!) List problems? Notify owner-jess-users@...

Re: JESS: How to load a rule file in a remote RMI client.

2009-10-23T20:20:07Z

It's very easy. See

http://www.jessrules.com/jess/docs/71/library.html#jess.Jesp

Follow the first example, but use a StringReader instead of the
FileReader.

On Oct 23, 2009, at 10:28 PM, Andrew Meng wrote:

>
> Thanks a lot for the quick reply!
>
> As a workaround, I did copy the xxx.clp over to the remote machine.
>
>
>
> However I want to make a generic remote worker who just takes a task
> from JavaSpace and execute task.execute(). My task is like:
>
>
>
> class task{
>
> ...
>
> public Object execute(){
>
> ...
>
> engine.batch("xxx.clp");
>
> if (engine.run() > 1) { does something and return}
>
> }
>
> }
>
>
> Yes, I can read the xxx.clp into a string as a part of the task
> object which will be serialized to the remote host by RMI. After
> reading Jesp API and JIA book, I still could not figure out the Jesp
> syntax to do what I want to do.
>
>
>
> Can you please elaborate more?
>
>
>
> Thanks a lot,
>
> Andrew
>
>
>> From: ejfried@...
>> To: jess-users@...
>> Subject: Re: JESS: How to load a rule file in a remote RMI client.
>> Date: Fri, 23 Oct 2009 20:46:09 -0400
>>
>> If you want a process on a remote machine to open a file by name,
>> then
>> of course you'd need to transmit the file. But you can instead read
>> the file into a String and send the String around; then use a
>> StringReader and the jess.Jesp class to run the code on the remote
>> machines (see the Jess manual on how to use jess.Jesp to parse Jess
>> code.)
>>
>>
>> On Oct 18, 2009, at 10:41 PM, ameng wrote:
>>
>>>
>>> Hello,
>>>
>>> I am trying to integrate Jess with JavaSpace(RMI). Tasks(running
>>> rete.batch("rule.clp")) put into a JavaSpace got following
>>> exception on
>>> the remote machine:
>>>
>>> Jess reported an error in routine batch.
>>> Message: Cannot open file.
>>> at jess.Batch.findDocument(Batch.java:221)
>>> at jess.Batch.batch(Batch.java:122)
>>> at jess.Batch.batch(Batch.java:113)
>>> at jess.Batch.batch(Batch.java:75)
>>> at jess.Batch.batch(Batch.java:40)
>>> at jess.Rete.batch(Rete.java:2791)
>>>
>>> What are the options here to pass the rules file to remote rete
>>> engine?
>>>
>>> Thanks a lot,
>>> Andrew
>>> --
>>> View this message in context: http://www.nabble.com/How-to-load-a-rule-file-in-a-remote-RMI-client.-tp25952603p25952603.html
>>> Sent from the Jess mailing list archive at Nabble.com.
>>>
>>>
>>>
>>> --------------------------------------------------------------------
>>> To unsubscribe, send the words 'unsubscribe jess-users
>>> you@...'
>>> in the BODY of a message to majordomo@..., NOT to the list
>>> (use your own address!) List problems? Notify owner-jess-users@...
>>> .
>>> --------------------------------------------------------------------
>>
>> ---------------------------------------------------------
>> Ernest Friedman-Hill
>> Informatics & Decision Sciences, Sandia National Laboratories
>> PO Box 969, MS 9012, Livermore, CA 94550
>> http://www.jessrules.com
>>
>>
>>
>>
>>
>>
>>
>> --------------------------------------------------------------------
>> To unsubscribe, send the words 'unsubscribe jess-users you@...
>> '
>> in the BODY of a message to majordomo@..., NOT to the list
>> (use your own address!) List problems? Notify owner-jess-users@...

RE: JESS: How to load a rule file in a remote RMI client.

2009-10-23T19:28:12Z

Thanks a lot for the quick reply!

As a workaround, I did copy the xxx.clp over to the remote machine.

However I want to make a generic remote worker who just takes a task from JavaSpace and execute task.execute(). My task is like:

class task{

...

public Object execute(){

...

engine.batch("xxx.clp");

if (engine.run() > 1) { does something and return}

}

}

Yes, I can read the xxx.clp into a string as a part of the task object which will be serialized to the remote host by RMI. After reading Jesp API and JIA book, I still could not figure out the Jesp syntax to do what I want to do.

Can you please elaborate more?

Thanks a lot,

Andrew

> From: ejfried@...
> To: jess-users@...
> Subject: Re: JESS: How to load a rule file in a remote RMI client.
> Date: Fri, 23 Oct 2009 20:46:09 -0400
>
> If you want a process on a remote machine to open a file by name, then
> of course you'd need to transmit the file. But you can instead read
> the file into a String and send the String around; then use a
> StringReader and the jess.Jesp class to run the code on the remote
> machines (see the Jess manual on how to use jess.Jesp to parse Jess
> code.)
>
>
> On Oct 18, 2009, at 10:41 PM, ameng wrote:
>
> >
> > Hello,
> >
> > I am trying to integrate Jess with JavaSpace(RMI). Tasks(running
> > rete.batch("rule.clp")) put into a JavaSpace got following
> > exception on
> > the remote machine:
> >
> > Jess reported an error in routine batch.
> > Message: Cannot open file.
> > at jess.Batch.findDocument(Batch.java:221)
> > at jess.Batch.batch(Batch.java:122)
> > at jess.Batch.batch(Batch.java:113)
> > at jess.Batch.batch(Batch.java:75)
> > at jess.Batch.batch(Batch.java:40)
> > at jess.Rete.batch(Rete.java:2791)
> >
> > What are the options here to pass the rules file to remote rete
> > engine?
> >
> > Thanks a lot,
> > Andrew
> > --
> > View this message in context: http://www.nabble.com/How-to-load-a-rule-file-in-a-remote-RMI-client.-tp25952603p25952603.html
> > Sent from the Jess mailing list archive at Nabble.com.
> >
> >
> >
> > --------------------------------------------------------------------
> > To unsubscribe, send the words 'unsubscribe jess-users
> > you@...'
> > in the BODY of a message to majordomo@..., NOT to the list
> > (use your own address!) List problems? Notify owner-jess-users@...
> > .
> > --------------------------------------------------------------------
>
> ---------------------------------------------------------
> Ernest Friedman-Hill
> Informatics & Decision Sciences, Sandia National Laboratories
> PO Box 969, MS 9012, Livermore, CA 94550
> http://www.jessrules.com
>
>
>
>
>
>
>
> --------------------------------------------------------------------
> To unsubscribe, send the words 'unsubscribe jess-users you@...'
> in the BODY of a message to majordomo@..., NOT to the list
> (use your own address!) List problems? Notify owner-jess-users@...