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[protege-discussion] SWRL Query Tab

Tania Tudorache tudorache at
Wed Oct 10 12:42:15 PDT 2007

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Netty Rajsiri - EBM WebSourcing wrote:
> Hello,
> 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 error:
> Exception running Jess rule engine: 
> edu.stanford.smi.protegex.owl.swrl.bridge.jess.exceptions.SWRLJessBridgeException: 
> Error running Jess rule engine: Jess reported an error in routine 
> invokeSWRLBuiltIn
> 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': 
> edu.stanford.smi.protegex.owl.swrl.bridge.builtins.query.SWRLBuiltInLibraryImpl.
> 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
> Netty
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