Examples of org.openrdf.result.GraphResult

org.openrdf.result.GraphResult
A representation of a query result as a sequence of {@link Statement}objects. Each query result consists of zero or more Statements and additionaly carries information about relevant namespace declarations. Note: take care to always close a GraphQueryResult after use to free any resources it keeps hold of. @author jeen

    client.setLimit(1);
    if (cached != null && (cached.isAbsent() || !cached.isSizeAvailable())) {
      // Only calculate if cached value is old
      client.ifNoneMatch(cached.getETag());
    }
    GraphResult result = client.get(subj, pred, obj, includeInferred, contexts);
    int maxAge = client.getMaxAge();
    if (result == null) {
      assert cached != null : "Server did not return a size value";
      cached.refreshed(now, maxAge);
    }
    else {
      cached = new CachedSize(result.hasNext(), client.getETag());
      cached.refreshed(now, maxAge);
      cachedSizes.put(pattern, cached);
    }
    containsFreshValues |= maxAge > 0;
    return cached.isAbsent();

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      return new ModelNamespaceResult(this, new EmptyCursor<Statement>());
    }


    flush();
    StatementClient statements = client.statements();
    GraphResult result = statements.get(subj, pred, obj, inf, ctx);
    return new ModelResultImpl(new GraphQueryResultCursor(result));
  }

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      return repository.hasStatement(subj, pred, obj, includeInferred, contexts);
    }
    flush();
    StatementClient statements = client.statements();
    statements.setLimit(1);
    GraphResult result = statements.get(subj, pred, obj, includeInferred, contexts);
    try {
      return result.hasNext();
    }
    finally {
      result.close();
    }
  }

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      writeln("Evaluating query...");
      long startTime = System.nanoTime();


      Collection<Namespace> namespaces = con.getNamespaces().addTo(new ArrayList<Namespace>());


      GraphResult queryResult = con.prepareGraphQuery(ql, queryString).evaluate();


      try {
        int resultCount = 0;


        while (queryResult.hasNext()) {
          Statement st = queryResult.next();
          resultCount++;


          write(getStringRepForValue(st.getSubject(), namespaces));
          write("   ");
          write(getStringRepForValue(st.getPredicate(), namespaces));
          write("   ");
          write(getStringRepForValue(st.getObject(), namespaces));
          writeln();
        }


        long endTime = System.nanoTime();
        writeln(resultCount + " results (" + (endTime - startTime) / 1000000 + " ms)");
      }
      finally {
        queryResult.close();
      }
    }
    finally {
      con.close();
    }

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  }


  public <H extends RDFHandler> H evaluate(H handler)
    throws StoreException, RDFHandlerException
  {
    GraphResult queryResult = evaluate();
    QueryResultUtil.report(queryResult, handler);
    return handler;
  }

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      // Graph queryGraph = RepositoryUtil.asGraph(queryResult);
      // Graph expectedGraph = readExpectedTupleQueryResult();
      // compareGraphs(queryGraph, expectedGraph);
    }
    else if (query instanceof GraphQuery) {
      GraphResult gqr = ((GraphQuery)query).evaluate();
      Set<Statement> queryResult = gqr.asSet();


      Set<Statement> expectedResult = readExpectedGraphQueryResult();


      compareGraphs(queryResult, expectedResult);
    }

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          con.add(url(graphName), base(graphName), RDFFormat.forFileName(graphName), new URIImpl(
              graphName));
        }


        // Evaluate the query on the query data
        GraphResult result = con.prepareGraphQuery(getQueryLanguage(), query).evaluate();
        try {
          actualStatements = result.asList();
        }
        finally {
          result.close();
        }
      }
      finally {
        con.close();
      }

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    queryBuilder.append(" USING NAMESPACE foaf = <" + FOAF_NS + ">");


    GraphQuery query = testCon.prepareGraphQuery(QueryLanguage.SERQL, queryBuilder.toString());
    query.setBinding("name", nameBob);


    GraphResult result = query.evaluate();


    try {
      assertNotNull(result);
      assertTrue(result.hasNext());


      while (result.hasNext()) {
        Statement st = result.next();
        assertTrue(name.equals(st.getPredicate()) || mbox.equals(st.getPredicate()));
        if (name.equals(st.getPredicate())) {
          assertEquals("unexpected value for name: " + st.getObject(), nameBob, st.getObject());
        }
        else {
          assertEquals(mbox, st.getPredicate());
          assertEquals("unexpected value for mbox: " + st.getObject(), mboxBob, st.getObject());
        }


      }
    }
    finally {
      result.close();
    }
  }

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    queryBuilder.append(" CONSTRUCT *");
    queryBuilder.append(" FROM {} foaf:name {name};");
    queryBuilder.append("         foaf:mbox {mbox}");
    queryBuilder.append(" USING NAMESPACE foaf = <" + FOAF_NS + ">");


    GraphResult result = testCon.prepareGraphQuery(QueryLanguage.SERQL, queryBuilder.toString()).evaluate();


    try {
      assertNotNull(result);
      assertTrue(result.hasNext());


      while (result.hasNext()) {
        Statement st = result.next();
        if (name.equals(st.getPredicate())) {
          assertTrue(nameAlice.equals(st.getObject()) || nameBob.equals(st.getObject()));
        }
        else {
          assertEquals(mbox, st.getPredicate());
          assertTrue(mboxAlice.equals(st.getObject()) || mboxBob.equals(st.getObject()));
        }
      }
    }
    finally {
      result.close();
    }
  }

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  }


  public GraphResult evaluate()
    throws StoreException
  {
    GraphResult result = getQuery().evaluate();
    return new GraphResultImpl(result.getNamespaces(), getSigner().sign(result));
  }

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org.openrdf.http.server.resources.GraphQueryResource

org.openrdf.query.parser.serql.SeRQLQueryTestCase

org.openrdf.query.parser.sparql.SPARQLQueryTest

org.openrdf.repository.http.helpers.RepositoryCache

org.openrdf.repository.http.HTTPRepositoryConnection

org.openrdf.repository.RepositoryConnectionTest

org.openrdf.repository.sail.SailGraphQuery

org.openrdf.sail.federation.signatures.SignedGraphQuery

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