subject:"Re\: Jena doesn't use LocationMapper on owl\-imports"

Re: Jena doesn't use LocationMapper on owl-imports

2018-04-16 Thread r. r.

Andy, thank you!
The hint that OntModel uses its own FileManager solved it for me. I have a 
custom mapper, so utilized it as 
model.getDocumentManager().getFileManager().setLocationMapper(mapper);

Also I see that if I had set up the global FileManager with my mapper, it could 
also have solved the problem, as the global FM seems to be used by the model by 
default 







 > Оригинално писмо 

 >От: Andy Seaborne a...@apache.org

 >Относно: Re: Jena doesn't use LocationMapper on owl-imports

 >До: users@jena.apache.org

 >Изпратено на: 14.04.2018 18:45



 
> The list does not accept attachments, however, I mocked something up.
 
> 
 
> The OntModel has it's own FileManager for imports in the DocumentManager
 
> 
 
> model.getDocumentManager().addAltEntry(...)
 
> 
 
> or get the FileManager for imports
 
> 
 
> model.getDocumentManager().getFileManager()
 
> 
 
> 
 
> ---
 
> 
 
> Note:
 
> 
 
> fileManager.readModel(model, "file://" + source, "TURTLE");
 
> 
 
> the model does not know it's being read into via the FileManager
 
> 
 
>  Andy
 
> 
 
> On 13/04/18 11:24, r. r. wrote:
 
> > Hi Andy
 
> > indeed I first posted the question to SO..
 
> > 
 
> > here's the code; it's using Jena 3.6.0. I'm attaching the base and imported 
> > .ttl files as well.
 
> > indeed the extension of the mapped file was invalid, but even changing it 
> > to .ttl didn't help.
 
> > note that the query in queryModel() does produce results when the import is 
> > not redirected
 
> > 
 
> > package com.jenatest;
 
> > 
 
> > import java.io.FileNotFoundException;
 
> > import org.apache.jena.query.Query;
 
> > import org.apache.jena.query.QueryExecution;
 
> > import org.apache.jena.query.QueryExecutionFactory;
 
> > import org.apache.jena.query.QueryFactory;
 
> > import org.apache.jena.query.QuerySolution;
 
> > import org.apache.jena.query.ResultSet;
 
> > import org.apache.jena.rdf.model.Model;
 
> > import org.apache.jena.rdf.model.ModelFactory;
 
> > import org.apache.jena.rdf.model.RDFNode;
 
> > import org.apache.jena.util.FileManager;
 
> > import org.apache.jena.util.LocationMapper;
 
> > 
 
> > public class App {
 
> > 
 
> >      public void queryModel(Model model) {
 
> >          Query sparql = QueryFactory.create("prefix ab: 
> > <http://learningsparql.com/ns/addressbook#>\n" +
 
> >                  "prefix d:  <http://learningsparql.com/ns/data#>\n" +
 
> >                  "\n" +
 
> >                  "select ?email ?courseTitle\n" +
 
> >                  " { \n" +
 
> >                  "    ?d ab:email ?email ;\n" +
 
> >                  "   ab:takingCourse ?course .\n" +
 
> >                  "    ?course ab:courseTitle ?courseTitle\n" +
 
> >                  "}");
 
> > 
 
> >      Query query = QueryFactory.create(sparql);
 
> >      QueryExecution qe = QueryExecutionFactory.create(query, model);
 
> >      ResultSet rs = qe.execSelect();
 
> >          while (rs.hasNext()) {
 
> >              QuerySolution qs = rs.next();
 
> >              RDFNode r = qs.get("email");
 
> >              System.out.println("email: " + r);
 
> >          }
 
> >      }
 
> > 
 
> >      public void complexLoad() throws FileNotFoundException {
 
> >          LocationMapper mapper = new LocationMapper();
 
> >          
> > mapper.addAltEntry("file:///Users/tht/workspace/jenatest/test_course.ttl",
 
> >              
> > "file:///Users/tht/workspace/jenatest/test_course.redirected.ttl");
 
> > 
 
> >          Model model = ModelFactory.createOntologyModel();
 
> >          String source = "/Users/tht/workspace/jenatest/test_book.ttl";
 
> > 
 
> >  
 
> >          FileManager fileManager = new FileManager(mapper);
 
> >          fileManager.addLocatorFile();
 
> >          fileManager.readModel(model, "file://" + source, "TURTLE");
 
> > 
 
> >          queryModel(model);
 
> >      }
 
> > 
 
> >      public static void main(String[] args) {
 
> >          App app = new App();
 
> > 
 
> >          try {
 
> >              app.complexLoad();
 
> >          } catch (FileNotFoundException e) {
 
> >              // TODO Auto-generated catch block
 
> >              e.printStackTrace();
 
> >          }
 
> >      }
 
> >

Re: Jena doesn't use LocationMapper on owl-imports

2018-04-14 Thread Andy Seaborne


The list does not accept attachments, however, I mocked something up.

The OntModel has it's own FileManager for imports in the DocumentManager

model.getDocumentManager().addAltEntry(...)

or get the FileManager for imports

model.getDocumentManager().getFileManager()


---

Note:

fileManager.readModel(model, "file://" + source, "TURTLE");

the model does not know it's being read into via the FileManager

Andy

On 13/04/18 11:24, r. r. wrote:

Hi Andy
indeed I first posted the question to SO..

here's the code; it's using Jena 3.6.0. I'm attaching the base and imported 
.ttl files as well.
indeed the extension of the mapped file was invalid, but even changing it to 
.ttl didn't help.
note that the query in queryModel() does produce results when the import is not 
redirected

package com.jenatest;

import java.io.FileNotFoundException;
import org.apache.jena.query.Query;
import org.apache.jena.query.QueryExecution;
import org.apache.jena.query.QueryExecutionFactory;
import org.apache.jena.query.QueryFactory;
import org.apache.jena.query.QuerySolution;
import org.apache.jena.query.ResultSet;
import org.apache.jena.rdf.model.Model;
import org.apache.jena.rdf.model.ModelFactory;
import org.apache.jena.rdf.model.RDFNode;
import org.apache.jena.util.FileManager;
import org.apache.jena.util.LocationMapper;

public class App {

     public void queryModel(Model model) {
         Query sparql = QueryFactory.create("prefix ab: 
<http://learningsparql.com/ns/addressbook#>\n" +
                 "prefix d:  <http://learningsparql.com/ns/data#>\n" +
                 "\n" +
                 "select ?email ?courseTitle\n" +
                 " { \n" +
                 "    ?d ab:email ?email ;\n" +
                 "   ab:takingCourse ?course .\n" +
                 "    ?course ab:courseTitle ?courseTitle\n" +
                 "}");

     Query query = QueryFactory.create(sparql);
     QueryExecution qe = QueryExecutionFactory.create(query, model);
     ResultSet rs = qe.execSelect();
         while (rs.hasNext()) {
             QuerySolution qs = rs.next();
             RDFNode r = qs.get("email");
             System.out.println("email: " + r);
         }
     }

     public void complexLoad() throws FileNotFoundException {
         LocationMapper mapper = new LocationMapper();
         
mapper.addAltEntry("file:///Users/tht/workspace/jenatest/test_course.ttl",
             "file:///Users/tht/workspace/jenatest/test_course.redirected.ttl");

         Model model = ModelFactory.createOntologyModel();
         String source = "/Users/tht/workspace/jenatest/test_book.ttl";

 
         FileManager fileManager = new FileManager(mapper);

         fileManager.addLocatorFile();
         fileManager.readModel(model, "file://" + source, "TURTLE");

         queryModel(model);
     }

     public static void main(String[] args) {
         App app = new App();

         try {
             app.complexLoad();
         } catch (FileNotFoundException e) {
             // TODO Auto-generated catch block
             e.printStackTrace();
         }
     }
}









  > Оригинално писмо 

  >От: Andy Seaborne a...@apache.org

  >Относно: Re: Jena doesn't use LocationMapper on owl-imports

  >До: users@jena.apache.org

  >Изпратено на: 13.04.2018 13:02



  

same as yesterday's
  


  

https://stackoverflow.com/questions/49801630/jena-doesnt-use-locationmapper-on-owl-imports
  


  

Please provide a complete, minimal, debuggable example, and also say
  

which version of Jena you are using.
  


  

  Andy
  


  

PS redirecting to a file with an extension that does not indicate the
  

RDF syntax will not work.
  


  

On 13/04/18 10:21, r. r. wrote:
  

Hello!
  

I have a ttl file with owl-imports clause like
  


  


  


  

@prefix xsd: <http://www.w3.org/2001/XMLSchema#>
  


  

<http://test/data.ttl>
  

a   owl:Ontology ;
  

owl:imports  ;
  

owl:versionInfo "tht testing owl:imports"^^xsd:string .
  


  


  


  


  

When test_course.ttl file exists, FileManager.get().readModel loads
  

the model, the other ttl is imported and sparql queries work fine. But
  

if I remove the file and use
  

FileManager.get().setLocationMapper().addAltEntry() to redirect to
  

another existing file, the model is not what i expect and the sparql
  

queries return no results.
  


  


  


  


  

So owl-imports works fine, but it seems like Jena is not using
  

LocationMapper when importing? or could it be my mapping uris are
  

incorrect? I'm using something like
  


  


  


  


  


  

mapper.addAltEntry("file:///Users/tht/workspace/jenatest/test_course.ttl",
  

"file:///Users/tht/workspace/jenatest/test_course.ttl.redirected")
  


  


  

Thanks for any hints!

Re: Jena doesn't use LocationMapper on owl-imports

2018-04-13 Thread r. r.

Hi Andy
indeed I first posted the question to SO..

here's the code; it's using Jena 3.6.0. I'm attaching the base and imported 
.ttl files as well.
indeed the extension of the mapped file was invalid, but even changing it to 
.ttl didn't help.
note that the query in queryModel() does produce results when the import is not 
redirected

package com.jenatest;

import java.io.FileNotFoundException;
import org.apache.jena.query.Query;
import org.apache.jena.query.QueryExecution;
import org.apache.jena.query.QueryExecutionFactory;
import org.apache.jena.query.QueryFactory;
import org.apache.jena.query.QuerySolution;
import org.apache.jena.query.ResultSet;
import org.apache.jena.rdf.model.Model;
import org.apache.jena.rdf.model.ModelFactory;
import org.apache.jena.rdf.model.RDFNode;
import org.apache.jena.util.FileManager;
import org.apache.jena.util.LocationMapper;

public class App {

    public void queryModel(Model model) {
        Query sparql = QueryFactory.create("prefix ab: 
<http://learningsparql.com/ns/addressbook#>\n" + 
                "prefix d:  <http://learningsparql.com/ns/data#>\n" + 
                "\n" + 
                "select ?email ?courseTitle\n" + 
                " { \n" + 
                "    ?d ab:email ?email ;\n" + 
                "   ab:takingCourse ?course .\n" + 
                "    ?course ab:courseTitle ?courseTitle\n" + 
                "}");

    Query query = QueryFactory.create(sparql);
    QueryExecution qe = QueryExecutionFactory.create(query, model);
    ResultSet rs = qe.execSelect();
        while (rs.hasNext()) {
            QuerySolution qs = rs.next();
            RDFNode r = qs.get("email");
            System.out.println("email: " + r);
        }
    }

    public void complexLoad() throws FileNotFoundException {
        LocationMapper mapper = new LocationMapper();
        
mapper.addAltEntry("file:///Users/tht/workspace/jenatest/test_course.ttl",
            "file:///Users/tht/workspace/jenatest/test_course.redirected.ttl");

        Model model = ModelFactory.createOntologyModel();
        String source = "/Users/tht/workspace/jenatest/test_book.ttl";

        
        FileManager fileManager = new FileManager(mapper);
        fileManager.addLocatorFile();
        fileManager.readModel(model, "file://" + source, "TURTLE");

        queryModel(model);
    }

    public static void main(String[] args) {
        App app = new App();

        try {
            app.complexLoad();
        } catch (FileNotFoundException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }
    }
}









 > Оригинално писмо 

 >От: Andy Seaborne a...@apache.org

 >Относно: Re: Jena doesn't use LocationMapper on owl-imports

 >До: users@jena.apache.org

 >Изпратено на: 13.04.2018 13:02



 
> same as yesterday's
 
> 
 
> https://stackoverflow.com/questions/49801630/jena-doesnt-use-locationmapper-on-owl-imports
 
> 
 
> Please provide a complete, minimal, debuggable example, and also say 
 
> which version of Jena you are using.
 
> 
 
>  Andy
 
> 
 
> PS redirecting to a file with an extension that does not indicate the 
 
> RDF syntax will not work.
 
> 
 
> On 13/04/18 10:21, r. r. wrote:
 
> > Hello!
 
> > I have a ttl file with owl-imports clause like
 
> > 
 
> > 
 
> > 
 
> > @prefix xsd: <http://www.w3.org/2001/XMLSchema#>
 
> > 
 
> > <http://test/data.ttl>
 
> >a   owl:Ontology ;
 
> >owl:imports  ;
 
> >owl:versionInfo "tht testing owl:imports"^^xsd:string .
 
> > 
 
> > 
 
> > 
 
> > 
 
> > When test_course.ttl file exists, FileManager.get().readModel loads
 
> > the model, the other ttl is imported and sparql queries work fine. But
 
> > if I remove the file and use
 
> > FileManager.get().setLocationMapper().addAltEntry() to redirect to
 
> > another existing file, the model is not what i expect and the sparql
 
> > queries return no results.
 
> > 
 
> > 
 
> > 
 
> > 
 
> > So owl-imports works fine, but it seems like Jena is not using
 
> > LocationMapper when importing? or could it be my mapping uris are
 
> > incorrect? I'm using something like
 
> > 
 
> > 
 
> > 
 
> > 
 
> > 
 
> > mapper.addAltEntry("file:///Users/tht/workspace/jenatest/test_course.ttl",
 
> > "file:///Users/tht/workspace/jenatest/test_course.ttl.redirected")
 
> > 
 
> > 
 
> > Thanks for any hints!
 
> > 
 
> > 
 
> >  
 
> >

Re: Jena doesn't use LocationMapper on owl-imports

2018-04-13 Thread Andy Seaborne


same as yesterday's

https://stackoverflow.com/questions/49801630/jena-doesnt-use-locationmapper-on-owl-imports

Please provide a complete, minimal, debuggable example, and also say 
which version of Jena you are using.


Andy

PS redirecting to a file with an extension that does not indicate the 
RDF syntax will not work.


On 13/04/18 10:21, r. r. wrote:

Hello!
I have a ttl file with owl-imports clause like



@prefix xsd: 


   a   owl:Ontology ;
   owl:imports  ;
   owl:versionInfo "tht testing owl:imports"^^xsd:string .




When test_course.ttl file exists, FileManager.get().readModel loads
the model, the other ttl is imported and sparql queries work fine. But
if I remove the file and use
FileManager.get().setLocationMapper().addAltEntry() to redirect to
another existing file, the model is not what i expect and the sparql
queries return no results.




So owl-imports works fine, but it seems like Jena is not using
LocationMapper when importing? or could it be my mapping uris are
incorrect? I'm using something like





mapper.addAltEntry("file:///Users/tht/workspace/jenatest/test_course.ttl",
"file:///Users/tht/workspace/jenatest/test_course.ttl.redirected")


Thanks for any hints!

Re: Jena doesn't use LocationMapper on owl-imports

Re: Jena doesn't use LocationMapper on owl-imports

Re: Jena doesn't use LocationMapper on owl-imports

Re: Jena doesn't use LocationMapper on owl-imports

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