Re: Combined query results

[Samita Bai / PhD CS Scholar @ City Campus]

Dear Claude,


I am working on two systems to answer the query so I need to split a query into 
two parts, one part will be sent to one system and its results would be sent to 
another system as a parametrized query.



Regards,

Samita Bai

________________________________
From: Claude Warren <cla...@xenei.com>
Sent: 08 June 2018 22:26:55
To: users@jena.apache.org
Subject: Re: Combined query results

How about:

prefix : <http://example.org/>

Select ?alice ?address where {
       ?alice :hasAddress ?address;
                  :hasName "Alice"
}




On Thu, Jun 7, 2018, 12:36 AM Samita Bai / PhD CS Scholar @ City Campus <
s...@iba.edu.pk> wrote:

> I need some help with the following code. I am using parameterized sparql
> string and I want to display combined results of both queries how can I do
> that. Any help or suggestion would be truly appreciated.
>
>
>
> final static String filename = "/home/samita/turtleContent.ttl";
>
>      static Model model= null;
>
>
>     final static String turtleContent = "" +
>             "@prefix : <http://example.org/> .\n" +
>             "\n" +
>             ":alice :hasName \"Alice\" .\n" +
>             ":alice :hasAddress \"4222 Clinton Way\" .\n" +
>             ":herman :hasName \"Herman\".\n" +
>             ":herman :hasAddress \"1313 Mockingbird Lane\" .\n" +
>             ":DrWho :hasAddress \"The TARDIS\"" +
>             "";
>
>
>    // Read the model from the turtle content
>    final static Model model = ModelFactory.createDefaultModel()
>            // .read( new ByteArrayInputStream( turtleContent.getBytes()),
> null, "TURTLE" );
>
>
>     final static String findAlice = "prefix : <http://example.org/>" +
>             "select ?alice where {" +
>             "?alice :hasName \"Alice\" }"  ;
>
>     final static String findAliceAddress = "prefix : <http://example.org/>"
> +
>             "select ?address where {" +
>             " ?alice :hasAddress ?address }";
>
>  public static void useParameterizedSPARQLString() {
>         System.out.println( "== useParameterizedSPARQLString ==" );
>         // execute the query that finds a (single) binding for ?alice.
> Then create
>         // a query solution map containing those results.
>         final ResultSet aliceResults = QueryExecutionFactory.create(
> findAlice, model ).execSelect();
>         final QuerySolutionMap map = new QuerySolutionMap();
>         map.addAll( aliceResults.next() );
>         // Create a ParameterizedSparqlString from the findAliceAddress
> query string (if this
>         // approach were taken, findAliceAddress could actually *be* a
> Param.SparqlString, of
>         // course).
>         final ParameterizedSparqlString pss = new
> ParameterizedSparqlString( findAliceAddress );
>         System.out.println( pss.toString() );
>         pss.setParams( map );
>         System.out.println( pss.toString() );
>         // execute the query and show the results
>         ResultSetFormatter.out( QueryExecutionFactory.create(
> pss.toString(), model ).execSelect() );
>     }
>
> The results I get is:
>
> ----------------------
> | address            |
> ======================
> | "4222 Clinton Way" |
> ----------------------
>
> Is there any way to display the variable ?alice also
>
> Like
>
> alice                                       address
>
> http://example.org/alice            "4222 Clinton Way"<
> http://example.org/alice>
>
>
>
>
>
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P : Please consider the environment before printing this e-mail

________________________________

CONFIDENTIALITY / DISCLAIMER NOTICE: This e-mail and any attachments may 
contain confidential and privileged information. If you are not the intended 
recipient, please notify the sender immediately by return e-mail, delete this 
e-mail and destroy any copies. Any dissemination or use of this information by 
a person other than the intended recipient is unauthorized and may be illegal.

________________________________