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SPARQL query using Fuseki server in android

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How to use Fuseki endpoint to send a query from an android studio. I got nothing when I run my app.
I want to query my own ontology and when I query using Fuseki endpoint in the browser, it works. But I want to get the result in my android app
here is my code

 String queryString ="PREFIX chld: <http://www.semanticweb.org/rawantur/ontologies/2019/1/untitled-ontology-128#>n"+ 
"SELECT ?Obesity_Treatmentn"+ 
"WHERE chld:Obesity_disease chld:treatedBy ?Obesity_Treatment n";

try 
 Uri.Builder builder = new Uri.Builder();
 builder.scheme("http").encodedAuthority("192.168.0.3:3030").appendPath("ds/sparq").appendQueryParameter("format", "=application/json"). appendQueryParameter("query", sparqlQueryString1);

 String urlstr = builder.build().toString();
 URL url = new URL(urlstr);
 try 
 HttpURLConnection con = (HttpURLConnection) url.openConnection();
 con.setDoOutput(false);
 con.setRequestMethod("GET");
 con.connect();

 InputStream in = new BufferedInputStream(con.getInputStream());
 BufferedReader reader = new BufferedReader(new InputStreamReader(in));
 String line;
 while ((line = reader.readLine()) !=null) 

 Text = (TextView) findViewById(R.id.textView12);
 Text.setText(line);
 

 catch (IOException e) 
 e.printStackTrace();
 
 catch (Exception e)
 e.printStackTrace();
 

192.168.0.3 is my computer IP address, I did not put localhost because I want to run on a mobile device.

When I entered localhost:3030/ds/sparql or 192.168.0.3/ds/sparql
or if I replace sparql with query in the browser I got

Error 404: Service Description: /ds/query

android fuseki

share|improve this question

asked Mar 27 at 9:29

RawanRawan

622 bronze badges

add a comment | 

0

How to use Fuseki endpoint to send a query from an android studio. I got nothing when I run my app.
I want to query my own ontology and when I query using Fuseki endpoint in the browser, it works. But I want to get the result in my android app
here is my code

 String queryString ="PREFIX chld: <http://www.semanticweb.org/rawantur/ontologies/2019/1/untitled-ontology-128#>n"+ 
"SELECT ?Obesity_Treatmentn"+ 
"WHERE chld:Obesity_disease chld:treatedBy ?Obesity_Treatment n";

try 
 Uri.Builder builder = new Uri.Builder();
 builder.scheme("http").encodedAuthority("192.168.0.3:3030").appendPath("ds/sparq").appendQueryParameter("format", "=application/json"). appendQueryParameter("query", sparqlQueryString1);

 String urlstr = builder.build().toString();
 URL url = new URL(urlstr);
 try 
 HttpURLConnection con = (HttpURLConnection) url.openConnection();
 con.setDoOutput(false);
 con.setRequestMethod("GET");
 con.connect();

 InputStream in = new BufferedInputStream(con.getInputStream());
 BufferedReader reader = new BufferedReader(new InputStreamReader(in));
 String line;
 while ((line = reader.readLine()) !=null) 

 Text = (TextView) findViewById(R.id.textView12);
 Text.setText(line);
 

 catch (IOException e) 
 e.printStackTrace();
 
 catch (Exception e)
 e.printStackTrace();
 

192.168.0.3 is my computer IP address, I did not put localhost because I want to run on a mobile device.

When I entered localhost:3030/ds/sparql or 192.168.0.3/ds/sparql
or if I replace sparql with query in the browser I got

Error 404: Service Description: /ds/query

android fuseki

share|improve this question

asked Mar 27 at 9:29

RawanRawan

622 bronze badges

add a comment | 

How to use Fuseki endpoint to send a query from an android studio. I got nothing when I run my app.
I want to query my own ontology and when I query using Fuseki endpoint in the browser, it works. But I want to get the result in my android app
here is my code

 String queryString ="PREFIX chld: <http://www.semanticweb.org/rawantur/ontologies/2019/1/untitled-ontology-128#>n"+ 
"SELECT ?Obesity_Treatmentn"+ 
"WHERE chld:Obesity_disease chld:treatedBy ?Obesity_Treatment n";

try 
 Uri.Builder builder = new Uri.Builder();
 builder.scheme("http").encodedAuthority("192.168.0.3:3030").appendPath("ds/sparq").appendQueryParameter("format", "=application/json"). appendQueryParameter("query", sparqlQueryString1);

 String urlstr = builder.build().toString();
 URL url = new URL(urlstr);
 try 
 HttpURLConnection con = (HttpURLConnection) url.openConnection();
 con.setDoOutput(false);
 con.setRequestMethod("GET");
 con.connect();

 InputStream in = new BufferedInputStream(con.getInputStream());
 BufferedReader reader = new BufferedReader(new InputStreamReader(in));
 String line;
 while ((line = reader.readLine()) !=null) 

 Text = (TextView) findViewById(R.id.textView12);
 Text.setText(line);
 

 catch (IOException e) 
 e.printStackTrace();
 
 catch (Exception e)
 e.printStackTrace();
 

192.168.0.3 is my computer IP address, I did not put localhost because I want to run on a mobile device.

When I entered localhost:3030/ds/sparql or 192.168.0.3/ds/sparql
or if I replace sparql with query in the browser I got

Error 404: Service Description: /ds/query

android fuseki

share|improve this question

asked Mar 27 at 9:29

RawanRawan

622 bronze badges

 String queryString ="PREFIX chld: <http://www.semanticweb.org/rawantur/ontologies/2019/1/untitled-ontology-128#>n"+ 
"SELECT ?Obesity_Treatmentn"+ 
"WHERE chld:Obesity_disease chld:treatedBy ?Obesity_Treatment n";

try 
 Uri.Builder builder = new Uri.Builder();
 builder.scheme("http").encodedAuthority("192.168.0.3:3030").appendPath("ds/sparq").appendQueryParameter("format", "=application/json"). appendQueryParameter("query", sparqlQueryString1);

 String urlstr = builder.build().toString();
 URL url = new URL(urlstr);
 try 
 HttpURLConnection con = (HttpURLConnection) url.openConnection();
 con.setDoOutput(false);
 con.setRequestMethod("GET");
 con.connect();

 InputStream in = new BufferedInputStream(con.getInputStream());
 BufferedReader reader = new BufferedReader(new InputStreamReader(in));
 String line;
 while ((line = reader.readLine()) !=null) 

 Text = (TextView) findViewById(R.id.textView12);
 Text.setText(line);
 

 catch (IOException e) 
 e.printStackTrace();
 
 catch (Exception e)
 e.printStackTrace();
 

android fuseki

android fuseki

share|improve this question

asked Mar 27 at 9:29

RawanRawan

622 bronze badges

share|improve this question

asked Mar 27 at 9:29

RawanRawan

622 bronze badges

asked Mar 27 at 9:29

RawanRawan

622 bronze badges

asked Mar 27 at 9:29

RawanRawan

622 bronze badges