Package org.apache.clerezza.rdf.core.sparql.query

Examples of org.apache.clerezza.rdf.core.sparql.query.SelectQuery

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        .append("> WHERE { <").append(subject).append("> <")
        .append(predicate).append("> ?").append(variable).append(" . }");

    Query q = QueryParser.getInstance().parse(queryStrBuf.toString());
    Assert.assertTrue(SelectQuery.class.isAssignableFrom(q.getClass()));
    SelectQuery selectQuery = (SelectQuery) q;
    Assert.assertTrue(selectQuery.getSelection().get(0)
        .equals(new Variable(variable)));
    Assert.assertTrue(selectQuery.getDataSet().getDefaultGraphs().toArray()[0]
        .equals(new UriRef(defaultGraph)));

    GraphPattern gp = (GraphPattern) selectQuery.getQueryPattern()
        .getGraphPatterns().toArray()[0];
    Assert.assertTrue(BasicGraphPattern.class.isAssignableFrom(gp.getClass()));
    BasicGraphPattern bgp = (BasicGraphPattern) gp;

    Set<TriplePattern> triplePatterns = bgp.getTriplePatterns();
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    Query q = QueryParser.getInstance().parse("Hello");
  }

  @Test
  public void testSelectQuerySelection() throws ParseException {
    SelectQuery q = (SelectQuery) QueryParser.getInstance().parse(
        "SELECT ?a ?b WHERE {?a ?x ?b}");
    Set<Variable> selectionSet = new HashSet<Variable>(
        q.getSelection());
    Set<Variable> expected = new HashSet<Variable>();
    expected.add(new Variable("a"));
    expected.add(new Variable("b"));
    Assert.assertEquals(expected, selectionSet);
    Assert.assertFalse(q.isSelectAll());

  }
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  }

  @Test
  public void testSelectAll() throws ParseException {
    SelectQuery q = (SelectQuery) QueryParser.getInstance().parse(
        "SELECT * WHERE {?a ?x ?b}");
    Set<Variable> selectionSet = new HashSet<Variable>(
        q.getSelection());
    Set<Variable> expected = new HashSet<Variable>();
    expected.add(new Variable("a"));
    expected.add(new Variable("b"));
    expected.add(new Variable("x"));
    Assert.assertEquals(expected, selectionSet);
    Assert.assertTrue(q.isSelectAll());

  }
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  }

  @Test
  public void testPlainLiteral() throws ParseException {
    SelectQuery q = (SelectQuery) QueryParser.getInstance().parse(
        "SELECT * WHERE {?a ?x 'tiger' . ?a ?x 'lion'@en . }");

    GraphPattern gp = (GraphPattern) q.getQueryPattern()
        .getGraphPatterns().toArray()[0];
    Assert.assertTrue(BasicGraphPattern.class.isAssignableFrom(gp.getClass()));
    BasicGraphPattern bgp = (BasicGraphPattern) gp;

    Set<TriplePattern> triplePatterns = bgp.getTriplePatterns();
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        new PlainLiteralImpl("lion", new Language("en")))));
  }

  @Test
  public void testOrderBy() throws ParseException {
    SelectQuery q = (SelectQuery) QueryParser.getInstance().parse(
        "SELECT * WHERE {?a ?x ?b} ORDER BY DESC(?b)");

    List<OrderCondition> oc = ((QueryWithSolutionModifier) q).getOrderConditions();
    Assert.assertTrue(oc.size()==1);
    Assert.assertFalse(oc.get(0).isAscending());
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        .append(prefix).append(":").append(predicate).append(" ?")
        .append(variable).append(" }");

    Query q = QueryParser.getInstance().parse(queryStrBuf.toString());
    Assert.assertTrue(SelectQuery.class.isAssignableFrom(q.getClass()));
    SelectQuery selectQuery = (SelectQuery) q;
    Assert.assertTrue(selectQuery.getSelection().get(0)
        .equals(new Variable(variable)));

    GraphPattern gp = (GraphPattern) selectQuery.getQueryPattern()
        .getGraphPatterns().toArray()[0];
    Assert.assertTrue(BasicGraphPattern.class.isAssignableFrom(gp.getClass()));
    BasicGraphPattern bgp = (BasicGraphPattern) gp;

    Set<TriplePattern> triplePatterns = bgp.getTriplePatterns();
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        .append(predicate2).append(" ?").append(variable3)
        .append(" .} FILTER ( ! bound(?").append(variable3).append(") ) }");

    Query q = QueryParser.getInstance().parse(queryStrBuf.toString());
    Assert.assertTrue(SelectQuery.class.isAssignableFrom(q.getClass()));
    SelectQuery selectQuery = (SelectQuery) q;
    Assert.assertTrue(selectQuery.getSelection().size() == 2);
    Set<Variable> vars = new HashSet<Variable>(2);
    Variable var1 = new Variable(variable1);
    Variable var2 = new Variable(variable2);
    vars.add(var1);
    vars.add(var2);
    Assert.assertTrue(selectQuery.getSelection().containsAll(vars));

    GroupGraphPattern ggp = selectQuery.getQueryPattern();
    List<Expression> constraints = ggp.getFilter();
    Assert.assertTrue(UnaryOperation.class.isAssignableFrom(constraints
        .get(0).getClass()));
    UnaryOperation uop = (UnaryOperation) constraints.get(0);
    Assert.assertTrue(uop.getOperatorString().equals("!"));
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    final String queryString = "SELECT ?email WHERE { "
        + "?x " + FOAF.mbox + " ?email . "
        + "?x " + PLATFORM.userName + " \"" + user + "\" . "
        + "}";
    try {
      SelectQuery selectQuery = (SelectQuery) QueryParser.getInstance().parse(queryString);
      ResultSet result = tcManager.executeSparqlQuery(selectQuery, systemGraph);
      if (result.hasNext()) {
        Resource email = result.next().get("email");
        String emailString = ((UriRef) email).getUnicodeString();
        //TODO should add personal name (if available) as well
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    }

    private void removeEnhancements(String id) throws StoreException {
        MGraph enhancementGraph = getEnhancementGraph();
        String enhancementQuery = QueryGenerator.getEnhancementsOfContent(id);
        SelectQuery selectQuery = null;
        try {
            selectQuery = (SelectQuery) QueryParser.getInstance().parse(enhancementQuery);
        } catch (ParseException e) {
            String msg = "Cannot parse the SPARQL while trying to delete the enhancements of the ContentItem";
            log.error(msg, e);
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            addField(ci, doc, fn);
        }
    }

    private void addField(ContentItem ci, SolrInputDocument doc, SolrFieldName fieldName) {
        SelectQuery query = null;
        try {
            query = (SelectQuery) QueryParser.getInstance().parse(QueryGenerator.getFieldQuery(fieldName));
        } catch (ParseException e) {
            log.debug("Should never reach here!");
            log.error("Cannot parse the query generated by QueryGenerator: {}",
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Related Classes of org.apache.clerezza.rdf.core.sparql.query.SelectQuery

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