You didn't provide sample code so I am making assumptions here...
I think that you are running across a change made in the latest releases.
Using:
?factId <- (pattern)
is now more like:
?factObject <- (pattern)
since the matched facts for a pattern are now full fledged facts (someone
please correct me if I am wrong here.)
>From section 2.8.1.2 in the user's manual:
Note that ?fact is a jess.Value object of type RU.FACT, not an integer. It
is basically a reference to a jess.Fact object. You can convert an ordinary
number into a FACT using the fact-id function. You can convert a FACT into
an integer when necessary by using reflection to call the Fact.getFactId()
function. The jess.Value.externalAddressValue() method can be called on a
FACT Value to obtain the actual jess.Fact object from Java code. In Jess
code, a fact-id essentially is a jess.Fact, and you can call jess.Fact
methods on a fact-id directly:
Also, see section 4.2.1.4 in the user's manual:
The class jess.FactIDValue
Use this subclass of Value when you want to create a Value that represents a
fact-id. The one constructor looks like this:
public FactIDValue(Fact f) throws JessException
In previous versions of Jess, fact-id's were more like integers; now they
are really references to facts. As such, a fact-id must represent a valid
jess.Fact object. Call externalAddressValue(Context) to get the jess.Fact
object, and call Fact.getFactId() to get the fact-id as an integer. This
latter manipulation will now rarely, if ever, be necessary.
Good luck!
alan
-----Original Message-----
From: Matthias Blankenhaus [mailto:[EMAIL PROTECTED]]
Sent: Wednesday, April 18, 2001 6:14 PM
To: [EMAIL PROTECTED]
Subject: JESS: modify
Hi all !
Since Jess6x the modify language primitive does not work any more the way
it used to work. When I specify a fact-id complaints about the fact-id
and reports that it is not an external address ?
I must have missed some major changes :-(
Matthias
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