InputStream sprklfile = FoafPublisher.class.getResourceAsStream("resources/publishfoaf.sparql");
        StringBuffer query = new StringBuffer();
        try {
            BufferedReader bin = new BufferedReader(new InputStreamReader(sprklfile, "UTF-8"));
            String line;
            while ((line = bin.readLine()) != null) {
                query.append(line); query.append("\n");
            }
        } catch (IOException e) {
        }
        System.out.println("query="+query);
        try {
            GraphQuery gquery = null;
            gquery = rep.prepareGraphQuery(QueryLanguage.SPARQL, query.toString(),saveTo.toURI().toString());
            Value vid = smapr.findKnownMappedValueFor(id);
            gquery.setBinding("id",vid);
            System.out.println("gquery="+gquery);
            final TurtleWriter turtleWriter = new TurtleWriter(new FileOutputStream(saveTo));
            gquery.evaluate(turtleWriter);
            turtleWriter.endRDF();
        } catch (RepositoryException e) {
            e.printStackTrace();  //todo: decide what exception to throw
        } catch (MalformedQueryException e) {
            e.printStackTrace();  //todo: decide what exception to throw
        } catch (RDFHandlerException e) {
            e.printStackTrace();  //todo: decide what exception to throw
        } catch (FileNotFoundException e) {
            e.printStackTrace();  //todo: decide what exception to throw
        } catch (QueryEvaluationException e) {
            e.printStackTrace();  //todo: decide what exception to throw
        } catch (Exception e) {
           e.printStackTrace();
        }

PREFIX foaf: <http://xmlns.com/foaf/0.1/>

CONSTRUCT {
   ?id ?rel ?obj;
       foaf:knows ?friend .
   ?friend ?frel ?fobj .
} WHERE {
   ?id ?rel ?obj .
   OPTIONAL {
      ?id foaf:knows ?friend .
      ?friend ?frel ?fobj .
   }
}

        InputStream sprklfile = FoafPublisher.class.getResourceAsStream("resources/publishfoaf.sparql");
        StringBuffer query = new StringBuffer();
        try {
            BufferedReader bin = new BufferedReader(new InputStreamReader(sprklfile, "UTF-8"));
            String line;
            while ((line = bin.readLine()) != null) {
                query.append(line);
                query.append("\n");
            }
        } catch (IOException e) {
        }

//we want to write this file out, so no need to save it (or perhaps not?)
          SesameMapper outmap = (SesameMapper) MapperManager.getMapperForGraph(new SesameMemorySailInit());
          RepositoryConnection outrep = outmap.rep();          
          
       String baseURI = null;
       try {
          final RDFInserter inserter = new RDFInserter(outrep);
          GraphQuery gquery = null;
//          baseURI;
          gquery = rep.prepareGraphQuery(QueryLanguage.SPARQL, query.toString(), baseURI);
          Value vid = smapr.findKnownMappedValueFor(id);
          gquery.setBinding("id", vid);
          System.out.println("gquery=" + gquery);
          gquery.evaluate(inserter);
          inserter.endRDF();
       } catch (RepositoryException _GEN_UCE_NAME_1) {
          _GEN_UCE_NAME_1.printStackTrace();
       } catch (MalformedQueryException _GEN_UCE_NAME_3) {
          _GEN_UCE_NAME_3.printStackTrace();
       } catch (QueryEvaluationException _GEN_UCE_NAME_5) {
          _GEN_UCE_NAME_5.printStackTrace();
       } catch (RDFHandlerException _GEN_UCE_NAME_7) {
          _GEN_UCE_NAME_7.printStackTrace();
       }
       

        
        try {
           final RDFWriter writer;
            if (saveTo != null) {
                 writer = new TurtleWriter(new FileOutputStream(saveTo));
                 baseURI = saveTo.toURI().toString();
             } else if (selectedFile != null ) {
                 writer = new TurtleWriter(selectedFile.getContent().getOutputStream());
                baseURI = selectedFile.getURL().toExternalForm();
             } else {
                 System.out.println("WARNING: no outputstream to write to!");
                 return null;
             }
           outrep.export(writer);
        } catch (RepositoryException e) {
            e.printStackTrace();  //todo: decide what exception to throw
        } catch (RDFHandlerException e) {
            e.printStackTrace();  //todo: decide what exception to throw
        } catch (FileNotFoundException e) {
            e.printStackTrace();  //todo: decide what exception to throw
        } catch (Exception e) {
            e.printStackTrace();
        }