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: [email protected]
To: [email protected]
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: [email protected]
To: [email protected]
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: [email protected]
To: [email protected]
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
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View this message in context:
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Sent from the Jess mailing list archive at Nabble.com.
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Sandia National Labs
PO Box 969, MS 9012 [email protected]
Livermore, CA 94550 http://www.jessrules.com
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Informatics & Decision Sciences Phone: (925) 294-2154
Sandia National Labs
PO Box 969, MS 9012 [email protected]
Livermore, CA 94550 http://www.jessrules.com
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