Thank you for your response.
My question is that my test code does not work if SPARQL query has Korean
characters because query string is encoded.
My test code is:
String dbpediKoEndpoint = "http://ko.dbpedia.org/sparql";;
String allSameAsQuery = ""
+ "PREFIX owl: <http://www.w3.org/2002/07/owl#>\n"
+ "SELECT *\n" + "WHERE {\n"
+ " <http://ko.dbpedia.org/resource/문절망둑> owl:sameAs
?x .\n" + "}";
Query query = QueryFactory.create(allSameAsQuery);
QueryEngineHTTP httpQuery = new
QueryEngineHTTP(dbpediKoEndpoint, query);
ResultSet results = httpQuery.execSelect();
while (results.hasNext()) {
QuerySolution solution = results.next();
String species = solution.getResource("?x").getURI();
System.out.println(species);
}
If you input SPARQL query like below on http://ko.dbpedia.org/sparql, you can
get 9 resources.
PREFIX owl: <http://www.w3.org/2002/07/owl#>
SELECT *
WHERE
{ <http://ko.dbpedia.org/resource/문절망둑> owl:sameAs ?x }
This query is the same as SPARQL query in my test code.
Thank you.
Sincerely yours,
Dr. Myungjin Lee
-----Original Message-----
From: Miguel Bento Alves [mailto:[email protected]]
Sent: Thursday, November 06, 2014 5:24 PM
To: [email protected]
Subject: Re: Problem SPARQL query encoding
Hi Myunjin,
what you did is not enough. You need to create a QueryExecution and create a
ResultSet to have a cursor pointing to the results.
See the example below.
Miguel
String service = "http://dbpedia.org/sparql";;
String query = "select distinct ?Concept where {[] a ?Concept} LIMIT
100";
QueryExecution qe
= QueryExecutionFactory.sparqlService(service, query);
ResultSet rs = qe.execSelect();
while(rs.hasNext()) {
QuerySolution qs = rs.next();
System.out.println("Concept -> "+qs.get("Concept").toString());
}
> On 06 Nov 2014, at 07:13, 이명진 <[email protected]> wrote:
>
> Hello. My name is Myunjin Lee.
>
> I am testing simple SPARQL query from Korean DBpedia SPARQL
> endpoint(http://ko.dbpedia.org/sparql) using Jena.
>
> For that, I implemented simple test code, but I had URI encoding
> problem of SPARQL query that has Korean character.
>
>
>
> My simple query is:
>
>
>
> String allSameAsQuery = ""
>
> + "PREFIX owl: <http://www.w3.org/2002/07/owl#>\n"
>
> + "SELECT *\n" + "WHERE {\n"
>
> + " <http://ko.dbpedia.org/resource/문절망둑>
> owl:sameAs ?x .\n" + "}";
>
>
>
> And then, to process query, I construct Query object.
>
>
>
> Query query = QueryFactory.create(allSameAsQuery);
>
> System.out.println(query.toString());
>
>
>
> Problem is that the query string is encoded when I make a Query object.
> Print out result is:
>
>
>
> PREFIX owl: <http://www.w3.org/2002/07/owl#>
>
>
>
> SELECT *
>
> WHERE
>
> {
> <http://ko.dbpedia.org/resource/%EB%AC%B8%EC%A0%88%EB%A7%9D%EB%91%91>
> owl:sameAs ?x }
>
>
>
> So that, I cannot get any owl:sameAs resource.
>
>
>
> How can I figure out the encoding problem? Or is there any method for
> my problem?
>
> Thank for your help.
>
>
>
> Sincerely yours,
>
> Dr. Myungjin Lee
>
