Examples with Value org.openrdf.model.Value used on opensource projects

Example 26 with Value

use of org.openrdf.model.Value in project blueprints by tinkerpop.

the class SailTest method testEvaluate.

// tuple queries ///////////////////////////////////////////////////////////
@Test
public void testEvaluate() throws Exception {
    Set<String> languages;
    String prefix = "urn:com.tinkerpop.blueprints.pgm.oupls.sail.test/";
    URI thorUri = sail.getValueFactory().createURI(prefix + "thor");
    SailConnection sc = sail.getConnection();
    try {
        sc.begin();
        URI uriA = sail.getValueFactory().createURI("http://example.org/uriA");
        URI uriB = sail.getValueFactory().createURI("http://example.org/uriB");
        URI uriC = sail.getValueFactory().createURI("http://example.org/uriC");
        sc.addStatement(uriA, uriB, uriC);
        sc.commit();
        sc.begin();
        SPARQLParser parser = new SPARQLParser();
        BindingSet bindings = new EmptyBindingSet();
        String baseURI = "http://example.org/bogus/";
        String queryStr;
        ParsedQuery query;
        CloseableIteration<? extends BindingSet, QueryEvaluationException> results;
        int count;
        // s ?p ?o SELECT
        queryStr = "SELECT ?y ?z WHERE { <http://example.org/uriA> ?y ?z }";
        query = parser.parseQuery(queryStr, baseURI);
        results = sc.evaluate(query.getTupleExpr(), query.getDataset(), bindings, false);
        count = 0;
        while (results.hasNext()) {
            count++;
            BindingSet set = results.next();
            URI y = (URI) set.getValue("y");
            Value z = (Value) set.getValue("z");
            assertNotNull(y);
            assertNotNull(z);
        // System.out.println("y = " + y + ", z = " + z);
        }
        results.close();
        assertTrue(count > 0);
        // s p ?o SELECT using a namespace prefix
        queryStr = "PREFIX foaf: <http://xmlns.com/foaf/0.1/>\n" + "SELECT ?z WHERE { <" + prefix + "thor> foaf:name ?z }";
        query = parser.parseQuery(queryStr, baseURI);
        results = sc.evaluate(query.getTupleExpr(), query.getDataset(), bindings, false);
        count = 0;
        languages = new HashSet<String>();
        while (results.hasNext()) {
            count++;
            BindingSet set = results.next();
            Literal z = (Literal) set.getValue("z");
            assertNotNull(z);
            languages.add(z.getLanguage());
        }
        results.close();
        assertTrue(count > 0);
        assertEquals(2, languages.size());
        assertTrue(languages.contains("en"));
        assertTrue(languages.contains("is"));
        // ?s p o SELECT using a plain literal value with no language tag
        queryStr = "PREFIX rdfs: <http://www.w3.org/2000/01/rdf-schema#>\n" + "SELECT ?s WHERE { ?s rdfs:comment \"he really knows where his towel is\" }";
        URI fordUri = sail.getValueFactory().createURI(prefix + "ford");
        query = parser.parseQuery(queryStr, baseURI);
        results = sc.evaluate(query.getTupleExpr(), query.getDataset(), bindings, false);
        count = 0;
        while (results.hasNext()) {
            count++;
            BindingSet set = results.next();
            URI s = (URI) set.getValue("s");
            assertNotNull(s);
            assertEquals(s, fordUri);
        }
        results.close();
        assertTrue(count > 0);
        // ?s p o SELECT using a language-specific literal value
        queryStr = "PREFIX foaf: <http://xmlns.com/foaf/0.1/>\n" + "SELECT ?s WHERE { ?s foaf:name \"Thor\"@en }";
        query = parser.parseQuery(queryStr, baseURI);
        results = sc.evaluate(query.getTupleExpr(), query.getDataset(), bindings, false);
        count = 0;
        while (results.hasNext()) {
            count++;
            BindingSet set = results.next();
            URI s = (URI) set.getValue("s");
            assertNotNull(s);
            assertEquals(s, thorUri);
        }
        results.close();
        assertTrue(count > 0);
        // The language tag is necessary
        queryStr = "PREFIX foaf: <http://xmlns.com/foaf/0.1/>\n" + "SELECT ?s WHERE { ?s foaf:name \"Thor\" }";
        query = parser.parseQuery(queryStr, baseURI);
        results = sc.evaluate(query.getTupleExpr(), query.getDataset(), bindings, false);
        count = 0;
        while (results.hasNext()) {
            count++;
            results.next();
        }
        results.close();
        assertEquals(0, count);
        // ?s p o SELECT using a typed literal value
        queryStr = "PREFIX foaf: <http://xmlns.com/foaf/0.1/>\n" + "PREFIX xsd: <http://www.w3.org/2001/XMLSchema#>\n" + "SELECT ?s WHERE { ?s foaf:msnChatID \"Thorster123\"^^xsd:string }";
        query = parser.parseQuery(queryStr, baseURI);
        results = sc.evaluate(query.getTupleExpr(), query.getDataset(), bindings, false);
        count = 0;
        while (results.hasNext()) {
            count++;
            BindingSet set = results.next();
            URI s = (URI) set.getValue("s");
            assertNotNull(s);
            assertEquals(s, thorUri);
        }
        results.close();
        assertTrue(count > 0);
        // The data type is necessary
        queryStr = "PREFIX foaf: <http://xmlns.com/foaf/0.1/>\n" + "PREFIX xsd: <http://www.w3.org/2001/XMLSchema#>\n" + "SELECT ?s WHERE { ?s foaf:msnChatID \"Thorster123\" }";
        query = parser.parseQuery(queryStr, baseURI);
        results = sc.evaluate(query.getTupleExpr(), query.getDataset(), bindings, false);
        count = 0;
        while (results.hasNext()) {
            count++;
            results.next();
        }
        results.close();
        assertEquals(0, count);
        // s ?p o SELECT
        // TODO: commented out languages for now
        queryStr = "PREFIX foaf: <http://xmlns.com/foaf/0.1/>\n" + "PREFIX xsd: <http://www.w3.org/2001/XMLSchema#>\n" + "SELECT ?p WHERE { <" + prefix + "thor> ?p \"Thor\"@en }";
        query = parser.parseQuery(queryStr, baseURI);
        URI foafNameUri = sail.getValueFactory().createURI("http://xmlns.com/foaf/0.1/name");
        results = sc.evaluate(query.getTupleExpr(), query.getDataset(), bindings, false);
        count = 0;
        while (results.hasNext()) {
            count++;
            BindingSet set = results.next();
            URI p = (URI) set.getValue("p");
            assertNotNull(p);
            assertEquals(p, foafNameUri);
        }
        results.close();
        assertTrue(count > 0);
        // context-specific SELECT
        queryStr = "PREFIX foaf: <http://xmlns.com/foaf/0.1/>\n" + "SELECT ?z\n" + "FROM <" + prefix + "ctx1>\n" + "WHERE { <" + prefix + "thor> foaf:name ?z }";
        query = parser.parseQuery(queryStr, baseURI);
        results = sc.evaluate(query.getTupleExpr(), query.getDataset(), bindings, false);
        count = 0;
        languages = new HashSet<String>();
        while (results.hasNext()) {
            count++;
            BindingSet set = results.next();
            Literal z = (Literal) set.getValue("z");
            assertNotNull(z);
            languages.add(z.getLanguage());
        }
        results.close();
        assertTrue(count > 0);
        assertEquals(2, languages.size());
        assertTrue(languages.contains("en"));
        assertTrue(languages.contains("is"));
        queryStr = "PREFIX foaf: <http://xmlns.com/foaf/0.1/>\n" + "SELECT ?z\n" + "FROM <http://example.org/emptycontext>\n" + "WHERE { <" + prefix + "thor> foaf:name ?z }";
        query = parser.parseQuery(queryStr, baseURI);
        results = sc.evaluate(query.getTupleExpr(), query.getDataset(), bindings, false);
        count = 0;
        while (results.hasNext()) {
            count++;
            results.next();
        }
        results.close();
        assertEquals(0, count);
    // s p o? select without and with inferencing
    // TODO commented out waiting for inferencing
    // queryStr =
    // "PREFIX rdf: <http://www.w3.org/1999/02/22-rdf-syntax-ns#>\n"
    // + "SELECT ?o\n"
    // + "WHERE { <" + prefix + "instance1> rdf:type ?o }";
    // query = parser.parseQuery(queryStr, baseURI);
    // results = sc.evaluate(query.getTupleExpr(), query.getDataset(),
    // bindings, false);
    // count = 0;
    // while (results.hasNext()) {
    // count++;
    // BindingSet set = results.next();
    // URI o = (URI) set.getValue("o");
    // assertEquals(prefix + "classB", o.toString());
    // }
    // results.close();
    // assertEquals(1, count);
    // results = sc.evaluate(query.getTupleExpr(), query.getDataset(),
    // bindings, true);
    // count = 0;
    // boolean foundA = false, foundB = false;
    // while (results.hasNext()) {
    // count++;
    // BindingSet set = results.next();
    // URI o = (URI) set.getValue("o");
    // String s = o.toString();
    // if (s.equals(prefix + "classA")) {
    // foundA = true;
    // } else if (s.equals(prefix + "classB")) {
    // foundB = true;
    // }
    // }
    // results.close();
    // assertEquals(2, count);
    // assertTrue(foundA);
    // assertTrue(foundB);
    } finally {
        sc.rollback();
        sc.close();
    }
}

Example 27 with Value

use of org.openrdf.model.Value in project backstage by zepheira.

the class ListFacet method createRestrictionClause.

protected ValueExpr createRestrictionClause(TupleQueryBuilder builder, String valueAsString, String valueType, ValueExpr input, ValueExpr previousClauses) {
    Value value = stringToValue(valueAsString);
    Compare compare = new Compare(input, builder.makeVar("v", value), CompareOp.EQ);
    return previousClauses == null ? compare : new Or(previousClauses, compare);
}

Example 28 with Value

use of org.openrdf.model.Value in project backstage by zepheira.

the class ListFacet method createComponentState.

protected List<FacetChoice> createComponentState(TupleQueryResult queryResult) throws QueryEvaluationException {
    List<FacetChoice> facetChoices = new ArrayList<FacetChoice>();
    Database database = _context.getDatabase();
    while (queryResult.hasNext()) {
        BindingSet bindingSet = queryResult.next();
        Value value = bindingSet.getValue(_valueVar.getName());
        Value count = bindingSet.getValue(_countVar.getName());
        String s = valueToString(value);
        int c = Integer.parseInt(count.stringValue());
        FacetChoice fc = new FacetChoice();
        fc._value = value;
        fc._valueString = s;
        fc._count = c;
        fc._label = database.valueToLabel(value);
        facetChoices.add(fc);
    }
    return facetChoices;
}

Example 29 with Value

use of org.openrdf.model.Value in project backstage by zepheira.

the class DefaultLens method render.

@Override
public void render(URI item, Scriptable result, Database database, SailRepositoryConnection connection) {
    result.put("label", result, database.getItemLabel(database.getItemId(item)));
    try {
        RepositoryResult<Statement> r = connection.getStatements(item, null, null, true, SailUtilities.noContext);
        Map<URI, Set<Value>> propertyToValues = new HashMap<URI, Set<Value>>();
        try {
            while (r.hasNext()) {
                Statement s = r.next();
                URI predicate = s.getPredicate();
                Set<Value> values = propertyToValues.get(predicate);
                if (values == null) {
                    values = new HashSet<Value>();
                    propertyToValues.put(predicate, values);
                }
                values.add(s.getObject());
            }
        } finally {
            r.close();
        }
        DefaultScriptableObject propertiesO = new DefaultScriptableObject();
        for (URI property : propertyToValues.keySet()) {
            String propertyID = database.getPropertyId(property);
            PropertyRecord propertyRecord = database.getPropertyRecord(propertyID);
            DefaultScriptableObject o = new DefaultScriptableObject();
            o.put("propertyLabel", o, propertyRecord.label);
            o.put("valueType", o, propertyRecord.valueType);
            ScriptableArrayBuilder valueArrayBuilder = new ScriptableArrayBuilder();
            Set<Value> values = propertyToValues.get(property);
            if ("item".equals(propertyRecord.valueType)) {
                for (Value value : values) {
                    if (value instanceof URI) {
                        URI itemURI = (URI) value;
                        String itemID = database.getItemId(itemURI);
                        DefaultScriptableObject v = new DefaultScriptableObject();
                        v.put("id", v, itemID);
                        v.put("label", v, database.getItemLabel(itemID));
                        valueArrayBuilder.add(v);
                    } else {
                        valueArrayBuilder.add(((Resource) value).stringValue());
                    }
                }
            } else {
                for (Value value : values) {
                    valueArrayBuilder.add(Utilities.valueToString(value));
                }
            }
            o.put("values", o, valueArrayBuilder.toArray());
            propertiesO.put(propertyID, propertiesO, o);
        }
        result.put("propertyValues", result, propertiesO);
    } catch (Exception e) {
        _logger.error("Failed to generate default lens for item " + item, e);
    }
}

Example 30 with Value

use of org.openrdf.model.Value in project backstage by zepheira.

the class DomLensNode method generateContentAttributes.

protected void generateContentAttributes(Value value, Scriptable result, Database database, SailRepositoryConnection connection) {
    ScriptableArrayBuilder arrayBuilder = new ScriptableArrayBuilder();
    for (ContentAttribute a : _contentAttributes) {
        DefaultScriptableObject o = new DefaultScriptableObject();
        o.put("name", o, a.name);
        try {
            boolean first = true;
            StringBuffer sb = new StringBuffer();
            ExpressionQueryResult eqr = a.expression.computeOutputOnValue(value, database, connection);
            if (eqr != null) {
                TupleQueryResult queryResult = eqr.tupleQuery.evaluate();
                try {
                    while (queryResult.hasNext()) {
                        BindingSet bindingSet = queryResult.next();
                        Value value2 = bindingSet.getValue(eqr.resultVar.getName());
                        if (first) {
                            first = false;
                        } else {
                            sb.append(";");
                        }
                        sb.append(renderInnerValueToText(value2, database, connection));
                    }
                } finally {
                    queryResult.close();
                }
            }
            o.put("value", o, sb.toString());
        } catch (Exception e) {
            _logger.error("", e);
        }
        arrayBuilder.add(o);
    }
    result.put("contentAttributes", result, arrayBuilder.toArray());
}