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[protege-discussion] SWRL Query Tab

Netty Rajsiri - EBM WebSourcing netty.rajsiri at
Tue Oct 9 06:08:35 PDT 2007



I’m using Protégé 3.3 beta for developing an ontology. I’d like to use the
SWRL query tab plug-in to query data in my ontology. Actually, I already
installed Jess and I’m successfully using the SWRLtab. 

I’ve tried to run the family example but when I run Jess engine, there is an


Exception running Jess rule engine:
ption: Error running Jess rule engine: Jess reported an error in routine

            while executing (invokeSWRLBuiltIn Query-2 query:select ?x)

            while executing defrule MAIN::Query-2.

  Message: Error invoking built-in 'query:select' from Jess: Unresolved
built-in class for namespace 'query' in rule 'Query-2':


On the top right of my SWRL rules table, there is no icon “Q” visible in the
list. Please give me some advice how to solve this problem.


Thank you


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