Re: [Semediawiki-user] SPARQL endpoint for Triple Store Connector

[Mark W. <mwa...@mo...>]

Mark Wallace wrote:
> Hello,
>
> I am looking for examples of querying the Jena Triple Store Connector 
> (1.4) SPARQL Endpoint remotely.  E.g. I want to query the Jena Model 
> from a remote Web Services client, or using a simple HTTP GET request.
>
> I tried submitting a query directly through my browser (my TSC is 
> running at localhost:8080) using this URL:
>
>   
> http://localhost:8080/sparql/?query=select%20*%20where%20%7B%3Fs%20a%20%3Fo%7D
>
> (which decoded is "select * where {?s a ?o}"), but the browser shows 
> this response:
>
>   No JAX-WS context information available.
>
> which leads me to believe I need to write a WS client app, e.g. in Java, 
> to issue queries to the model.
>
> Am I on the right track?  Can anyone point me to an example?
>
>   
For anyone else trying to do this, I got it mostly figured out.

When running the Triple Store Connector (TSC) using the defaults, , the 
WSDL is available on your local machine here.

      http://localhost:8080/sparql/?wsdl

You can create client stubs using the Java wsimport tool like this:

    wsimport -d gen -s gensrc http://localhost:8080/sparql/?wsdl

And then create a client like this:

    import com.ontoprise.smwplus.triplestore.sparqlendpoint.*;

    class TSCquery {
      public static void main (String [] args) {
       try {
         String queryStr = "Select * where {?s a ?o}";
         if (args.length > 0) queryStr = args[0];
         SPARQLEndpoint svc = new
    SparqlEndpointService().getSPARQLEndpointPort();
         String result = svc.query(queryStr,
    "http://modusoperandi.com/smw", "");
         System.out.println(result);
       } catch (Exception e) {
         System.err.println(e.getMessage());
       }
      }
    }

 -Mark
> Thanks,
>  -Mark
>
>