CODEWITHSUNDEEP
owlprotegeswrl
rye045
rye045

Reputation: 93

Protege SWRL rule creator says " Unexpected character ''' "; class name has a space in it

In the SWRL Tab in Protege I am trying to write a rule, but I can only do so with classes that don't have spaces in them. For example, I have a class called "equipment" in my ontology, so I can do this with no errors:

equipment(?x)

I also have a class called "machine tool". Because this class a space in its name, it says "Invalid SWRL atom predicate 'machine'" when I do this:

machine tool(?x)

I tried using an underscore instead of a space but that didn't work. I also tried putting machine tool and quotes as follows but then it says " Unexpected character ''' ":

'machine tool'(?x)

How do I refer to a class if it the class name has a space in it? Is there some way I can refer to it with the URI instead?

Upvotes: 1

Views: 341

Answers (2)

rye045
rye045

Reputation: 93

OK I figured it out. I had to update the SWRLTab plugin in Protege and then I could refer to the class by its URI as follows:

msdl:MSDL_0000070(?x)

Upvotes: 1

Ignazio
Ignazio

Reputation: 10659

machine tool is not the name of the class in your ontology, it is the value of an rdfs:label (or rdfs:comment) property attached to the class. The editor is not allowing you to use that (which would be convenient, I guess). A workaround is to find the actual IRI of the class and use that - shortened to its QName if that works.

Upvotes: 2

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