Hi Holger
Thanks for the quick reply. Here are the source lines:
Map<String,RDFNode> map = new HashMap<String,RDFNode>();
map.put("predicate",RDF.Type);
Template templ = SPINFactory.asTemplate(sub);
com.hp.hpl.jena.query.Query arqQ =
ARQFactory.get().createQuery((Select)templ.getBody());
org.topbraid.spin.model.Query spinQuery = new
ARQ2SPIN(model).createQuery(arqQ, null);
StringBuilder queryBldr = new StringBuilder();
StringPrintContext printCntxt = new StringPrintContext(queryBldr,map);
spinQuery.print(printCntxt);
String sparqlStr = queryBldr.toString();
System.out.println(sparqlStr);
It still gives me the query with variables.
thanks
-amit
On Tue, Oct 18, 2011 at 2:22 PM, Holger Knublauch <[email protected]>wrote:
> Hi Amit,
>
> if you pass in the pre-bound variables as initialBindings, then the printed
> string will have the variables replaced, and you can use the string in
> non-Jena systems. If this does not work, I would need to see your source
> code.
>
> Thanks
> Holger
>
>
> On Oct 18, 2011, at 5:32 PM, Amit Jain wrote:
>
> Hi
> I am trying to do the same, getting a template stored in SPIN RDF format,
> get the SPIN query object and then get the sparql query with the variables
> in the template replaced with the runtime arguments. Now java source code
> attached in this thread does allow using jena QueryExecution to run the ARQ
> query on a model, this does not allow using other non-jena systems. Hence i
> want to be able to get the actual Sparql query with the replaced arguments
> and use it. Using the string builder and stringprintcontext gives me back
> the original query with the variables only.
> thanks for the help
> -amit
>
> On Wed, Jul 6, 2011 at 3:14 PM, Holger Knublauch
> <[email protected]>wrote:
>
>> Hi Laszlo,
>>
>> for help and clarification why remote query executions don't support
>> pre-bindings, you may need to follow up with the Jena mailing list. However,
>> there is a solution with the SPIN API that allows you to pre-bind variables
>> at serialization time. The effect is that when you have a SPIN RDF object
>> (Query) you can set variables in the PrintContext and this will create a
>> query string where the variables have been replaced with the values. I am
>> not 100% sure that this covers all cases, but it might work in your
>> scenarios. Something like
>>
>> StringBuilder sb = new StringBuilder();
>> StringPrintContext c = new StringPrintContext(sb, initialBindings);
>> query.print(c);
>> String arqString = sb.toString();
>>
>> would give you a string that you can then convert to a remote Jena query.
>>
>> Cheers,
>> Holger
>>
>
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