Ah yes, and I remember you sent me a work-around for this case (running SPIN API from source code and not from the .jar file). I have included your change for the next build.
Holger On May 26, 2009, at 3:12 PM, Schmitz, Jeffrey A wrote: > > Just realized I've been down this path before. > > http://www.mail-archive.com/[email protected]/msg > 01038.html > > I had to edit SPL.java to fix it, which I have since copied over with > the new stuff and is why I'm seeing the problem again. I'll try > remaking > the change. > > Jeff > > >> -----Original Message----- >> From: Schmitz, Jeffrey A >> Sent: Tuesday, May 26, 2009 4:26 PM >> To: [email protected] >> Subject: [tbc-users] [SPIN] Error creating spin query with >> function reference >> >> >> Hello, >> I'm tring to execute a COSNTRUCT query that contains a >> reference to a SPIN function that I have defined. The code >> I'm using is: >> >> String arqQueryString = "PREFIX SpinLib: >> <http://www.boeing.com/IVHM/SpinLib.owl#>\n" + >> "PREFIX spinsquare: >> <http://topbraid.org/examples/spinsquare#>\n" + >> "CONSTRUCT {\n" + >> "?this spinsquare:area ?area .\n" + >> "}\n" + >> "WHERE {\n" + >> " ?this spinsquare:width ?width .\n" + >> " ?this spinsquare:height ?height .\n" + >> " FILTER(?height = 6)" + >> " LET (?area := spinsquare:twoDimArea(?width, >> ?height)) .\n" + >> "}\n"; >> >> >> SPINModuleRegistry.get().registerAll(spinsquareinstModel.memModel); >> >> arqQuery = ARQFactory.get().createQuery( >> spinsquareinstModel.memModel, arqQueryString); >> ARQ2SPIN a2s = new >> ARQ2SPIN(spinsquareinstModel.memModel); >> org.topbraid.spin.model.Query spinQuery = >> a2s.createQuery(arqQuery, null); >> >> When I run this code, I get a null pointer exception in the >> a2s.createQuery call. Stepping through the code, the real >> problem is down in the call to ARQ2SPIN.getFunction (called >> by SPINFactory.createExpression, line 411), which is >> returning a null value. Stepping through that function, the >> ExprFunction parameter passed into it looks good, but: >> >> String iri = function.getFunctionIRI(); >> >> Returns null, which I think causes the >> SPINFactory.createFunctionCall shown on the exception stack >> to get the exception. >> >> >> java.lang.NullPointerException >> at >> com.hp.hpl.jena.rdf.model.impl.ModelCom.add(ModelCom.java:939) >> at >> com.hp.hpl.jena.rdf.model.impl.ResourceImpl.addProperty(Resour >> ceImpl.jav >> a:245) >> at >> com.hp.hpl.jena.rdf.model.impl.ModelCom.createResource(ModelCo >> m.java:449 >> ) >> at >> org.topbraid.spin.model.SPINFactory.createFunctionCall(SPINFac >> tory.java: >> 333) >> at >> org.topbraid.spin.arq.ARQ2SPIN.createExpression(ARQ2SPIN.java:412) >> at org.topbraid.spin.arq.ARQ2SPIN.access$0(ARQ2SPIN.java:397) >> at org.topbraid.spin.arq.ARQ2SPIN$1.visit(ARQ2SPIN.java:295) >> at >> com.hp.hpl.jena.sparql.syntax.ElementFilter.visit(ElementFilte >> r.java:25) >> at >> org.topbraid.spin.arq.AbstractElementVisitor.visit(AbstractEle >> mentVisito >> r.java:64) >> at org.topbraid.spin.arq.ARQ2SPIN$1.visit(ARQ2SPIN.java:304) >> at >> com.hp.hpl.jena.sparql.syntax.ElementGroup.visit(ElementGroup. >> java:104) >> at >> org.topbraid.spin.arq.ARQ2SPIN.createElementList(ARQ2SPIN.java:281) >> at org.topbraid.spin.arq.ARQ2SPIN.createQuery(ARQ2SPIN.java:529) >> at com.boeing.sif.TestSPIN.main(TestSPIN.java:165) >> >> Any ideas on what I'm not doing correctly here? I "think" >> this used to work, but I haven't run it in awhile, and have >> since updated to the final version 1 of the SPIN API. Also, >> I can execute the query in the SPARQL tab on the model in >> TBC, so I think my models are setup correctly. I can also >> execute other queries on the model in my code, as long as >> they don't reference a function. >> >> Thanks! >> Jeff >> >>> >> > > > --~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed to the Google Groups "TopBraid Composer Users" group. To post to this group, send email to [email protected] To unsubscribe from this group, send email to [email protected] For more options, visit this group at http://groups.google.com/group/topbraid-composer-users?hl=en -~----------~----~----~----~------~----~------~--~---
