Hi Robert,
There are two, possibly three issues here. The error message is
telling you the main problem: the "infix notation" -- the pattern
matching that uses curly braces -- can't be used in multislots, and
most if not all of the slots created by JessTab are multislots. So the
first pattern probably has to look something like
?softwareRequirement1 <- (object (is-a
http://pluto.cse.msstate.edu/rae20/SRSontology#SoftwareRequirement))
I say "probably" because that URL might need to be quoted. It depends
on how JessTab defines things (this is the possible second issue).
The third issue is that I can't quite tell what you're trying to
accomplish in your second pattern, and in particular I can't tell what
this is supposed to be:
?softwareRequirement1.http://pluto.cse.msstate.edu/rae20/SRSontology#SoftwareRequirementName
Normally the thing to the right of the dot would be the name of a
slot, but that's certainly not a valid slot name, so I'm not sure what
your intention is. As a result I can't show you what the whole
rewritten rule should look like.
On Mar 21, 2010, at 7:57 PM, Robert A. Elliott,Sr. wrote:
All,
I'm trying to define this one simple rule using the Jess Tab in
Protege 3.4.3:
(defrule duplicate_requirement
"This rule will search by requirement name to find duplicates"
?softwareRequirement1 <-
(object {is-a == http://pluto.cse.msstate.edu/rae20/SRSontology#SoftwareRequirement
})
?softwareRequirement2 <-
(object {is-a ==
http://pluto.cse.msstate.edu/rae20/SRSontology#SoftwareRequirement
&& http://pluto.cse.msstate.edu/rae20/SRSontology#SoftwareRequirementName
==
?softwareRequirement1.http://pluto.cse.msstate.edu/rae20/SRSontology#SoftwareRequirementName
})
=>(printout t "Found Duplicate Requirements" ?person1.http://pluto.cse.msstate.edu/rae20/SRSontology#SoftwareRequirementName
crlf))
Jess returns this error:
Message: Can't use infix expressions with multislots at token
http://pluto.cse.msstate.edu/rae20/
SRSontology#SoftwareRequirementName.
I'm simply trying to compare two object facts of a 'is-a' type and
seeing if the RequirementName slots are identical. Thanks for the
help.
______________________________
Robert
---------------------------------------------------------
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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