Java Code Examples for com.bigdata.rdf.model.BigdataValueFactory#createStatement()

/**
 * When loading quads into a triple store, the context is striped away by
 * default.
 */
public void testQuadStripping() throws Exception {

    BigdataSailRepositoryConnection cxn = null;

    final BigdataSail sail = getSail(getTriplesNoInference());

    try {

        sail.initialize();
        final BigdataSailRepository repo = new BigdataSailRepository(sail);
        cxn = (BigdataSailRepositoryConnection) repo.getConnection();

        final BigdataValueFactory vf = (BigdataValueFactory) sail
              .getValueFactory();
        final URI s = vf.createURI("http://test/s");
        final URI p = vf.createURI("http://test/p");
        final URI o = vf.createURI("http://test/o");
        final URI c = vf.createURI("http://test/c");

        BigdataStatement stmt = vf.createStatement(s, p, o, c);
        cxn.add(stmt); 

        RepositoryResult<Statement> stmts = cxn.getStatements(null, null,
              null, false);
        Statement res = stmts.next();
        assertEquals(s, res.getSubject());
        assertEquals(p, res.getPredicate());
        assertEquals(o, res.getObject());
        assertEquals(null, res.getContext());

    } finally {
        if (cxn != null)
            cxn.close();
        sail.__tearDownUnitTest();
    }
}
 

/**
 * When loading quads into a triple store and the BigdataSail option
 * REJECT_QUADS_IN_TRIPLE_MODE is set to true, an exception will be thrown.
 */
public void testQuadStrippingRejected() throws Exception {

   BigdataSailRepositoryConnection cxn = null;

   final BigdataSail sail = getSail(getTriplesNoInferenceNoQuadsStripping());

   boolean exceptionEncountered = false;
   try {

      sail.initialize();
      final BigdataSailRepository repo = new BigdataSailRepository(sail);
      cxn = (BigdataSailRepositoryConnection) repo.getConnection();

      final BigdataValueFactory vf = (BigdataValueFactory) sail
            .getValueFactory();
      final URI s = vf.createURI("http://test/s");
      final URI p = vf.createURI("http://test/p");
      final URI o = vf.createURI("http://test/o");
      final URI c = vf.createURI("http://test/c");

      BigdataStatement stmt = vf.createStatement(s, p, o, c);
      cxn.add(stmt);

   } catch (RepositoryException e) {
      
      exceptionEncountered = true; // expected !
      
   } finally {
      
      if (cxn != null)
         cxn.close();
      sail.__tearDownUnitTest();
   }
   
   assertTrue(exceptionEncountered);
}
 

/**
 * Test whether the RDRHistory can handle statements that are added
 * and removed in the same commit.
 */
public void testFullyRedundantEvents() throws Exception {

    BigdataSailRepositoryConnection cxn = null;

    final BigdataSail sail = getSail(getProperties());

    try {

        sail.initialize();
        final BigdataSailRepository repo = new BigdataSailRepository(sail);
        cxn = (BigdataSailRepositoryConnection) repo.getConnection();

        final BigdataValueFactory vf = (BigdataValueFactory) sail
                .getValueFactory();
        final URI s = vf.createURI(":s");
        final URI p = vf.createURI(":p");
        final Literal o = vf.createLiteral("foo");
        final BigdataStatement stmt = vf.createStatement(s, p, o);
        final BigdataBNode sid = vf.createBNode(stmt);

        cxn.add(stmt);
        cxn.commit();

        assertEquals(1, cxn.getTripleStore().getAccessPath(sid, null, null).rangeCount(false));
        
        cxn.remove(stmt);
        cxn.add(stmt);
        cxn.commit();

        assertEquals(1, cxn.getTripleStore().getAccessPath(sid, null, null).rangeCount(false));
                    
    } finally {
        if (cxn != null)
            cxn.close();
        
        sail.__tearDownUnitTest();
    }
}
 

/**
 * Helper for {@link BlazeVertex#property(Cardinality, String, Object, Object...)}.
 * 
 * @param vertex the BlazeVertex
 * @param cardinality the property cardinality
 * @param key the property key
 * @param val the property value
 * @param kvs the properties to attach to the BlazeVertexProperty
 * @return a BlazeVertexProperty
 */
<V> BlazeVertexProperty<V> vertexProperty(final BlazeVertex vertex, 
        final Cardinality cardinality, final String key, final V val,
        final Object... kvs) {
    final BigdataValueFactory rdfvf = rdfValueFactory();
    final URI s = vertex.rdfId();
    final URI p = rdfvf.asValue(vf.propertyURI(key));
    final Literal lit = rdfvf.asValue(vf.toLiteral(val));
    
    final BigdataStatement stmt;
    if (cardinality == Cardinality.list) {
        final Literal timestamp = rdfvf.createLiteral(
                String.valueOf(vpIdFactory.getAndIncrement()), 
                LI_DATATYPE);
        stmt = rdfvf.createStatement(s, p, timestamp);
    } else {
        stmt = rdfvf.createStatement(s, p, lit);
    }
    final BigdataBNode sid = rdfvf.createBNode(stmt);
    final String vpId = vertexPropertyId(stmt);
    
    final RepositoryConnection cxn = cxn();
    Code.wrapThrow(() -> {
        if (cardinality == Cardinality.list) {
            // <s> <key> timestamp .
            cxn.add(stmt);
            // <<<s> <key> timestamp>> rdf:value "val" .
            cxn.add(sid, VALUE, lit);
        } else {
            if (cardinality == Cardinality.single && !bulkLoad) {
                final String queryStr = sparql.cleanVertexProps(s, p, lit);
                update(queryStr);
            }
            // << stmt >> <key> "val" .
            cxn.add(stmt);
        }
    });
    
    final BlazeProperty<V> prop = 
            new BlazeProperty<>(this, vertex, p, lit);
    final BlazeVertexProperty<V> bvp =
            new BlazeVertexProperty<>(prop, vpId, sid);
    ElementHelper.attachProperties(bvp, kvs);
    return bvp;
}
 

/**
	 * Bootstrap test. The data are explicitly entered into the KB by hand. This
	 * makes it possible to test evaluation without having to fix the RDF data
	 * loader. The query is based on <code>rdf-02</code>.
	 */
    public void test_reificationDoneRight_00() throws Exception {

		final BigdataValueFactory vf = store.getValueFactory();

		final BigdataURI SAP = vf.createURI("http://example.com/SAP");
		final BigdataURI bought = vf.createURI("http://example.com/bought");
		final BigdataURI sybase = vf.createURI("http://example.com/sybase");
		final BigdataURI dcSource = vf.createURI(DCTermsVocabularyDecl.NAMESPACE+"source");
		final BigdataURI dcCreated = vf.createURI(DCTermsVocabularyDecl.NAMESPACE+"created");
		final BigdataURI newsSybase = vf.createURI("http://example.com/news/us-sybase");
		final BigdataLiteral createdDate = vf.createLiteral("2011-04-05T12:00:00Z",XSD.DATETIME);
		final BigdataURI g1 = vf.createURI("http://example.com/g1");

		// Add/resolve the terms against the lexicon.
		final BigdataValue[] terms = new BigdataValue[] { SAP, bought, sybase,
				dcSource, dcCreated, newsSybase, createdDate, g1 };

		final BigdataURI context = store.isQuads() ? g1 : null;
		
		store.addTerms(terms);
		
		// ground statement.
		final BigdataStatement s0 = vf.createStatement(SAP, bought, sybase, 
				context, StatementEnum.Explicit);
		
		// Setup blank node with SidIV for that Statement.
		final BigdataBNode s1 = vf.createBNode("s1");
		s1.setStatementIdentifier(true);
		final ISPO spo = new SPO(s0);//SAP.getIV(), bought.getIV(), sybase.getIV(),
//				null/* NO CONTEXT */, StatementEnum.Explicit);
		s1.setIV(new SidIV<BigdataBNode>(spo));

		// metadata statements.

		final BigdataStatement mds1 = vf.createStatement(s1, dcSource,
				newsSybase, context, StatementEnum.Explicit);

		final BigdataStatement mds2 = vf.createStatement(s1, dcCreated,
				createdDate, context, StatementEnum.Explicit);

		final ISPO[] stmts = new ISPO[] { new SPO(s0), new SPO(mds1), new SPO(mds2) };

		store.addStatements(stmts, stmts.length);

		/*
		 * Now that we have populated the database, we can go ahead and compile
		 * the query. (If we compile the query first then it will not find any
		 * matching lexical items.)
		 */

		final TestHelper h = new TestHelper(TEST_RESOURCE_PREFIX + "rdr-00", // testURI,
				TEST_RESOURCE_PREFIX + "rdr-02.rq",// queryFileURL
				TEST_RESOURCE_PREFIX + "empty.ttl",// dataFileURL
				TEST_RESOURCE_PREFIX + "rdr-02.srx"// resultFileURL
		);

		h.runTest();

    }
 

/**
* Bootstrap test. The data are explicitly entered into the KB by hand. This
* makes it possible to test evaluation without having to fix the RDF data
* loader. The query is based on <code>rdf-02a</code>.
*/
  public void test_reificationDoneRight_00a() throws Exception {

final BigdataValueFactory vf = store.getValueFactory();

final BigdataURI SAP = vf.createURI("http://example.com/SAP");
final BigdataURI bought = vf.createURI("http://example.com/bought");
final BigdataURI sybase = vf.createURI("http://example.com/sybase");
final BigdataURI dcSource = vf.createURI(DCTermsVocabularyDecl.NAMESPACE+"source");
final BigdataURI dcCreated = vf.createURI(DCTermsVocabularyDecl.NAMESPACE+"created");
final BigdataURI newsSybase = vf.createURI("http://example.com/news/us-sybase");
final BigdataLiteral createdDate = vf.createLiteral("2011-04-05T12:00:00Z",XSD.DATETIME);
final BigdataURI g1 = vf.createURI("http://example.com/g1");

// Add/resolve the terms against the lexicon.
final BigdataValue[] terms = new BigdataValue[] { SAP, bought, sybase,
		dcSource, dcCreated, newsSybase, createdDate, g1 };

final BigdataURI context = store.isQuads() ? g1 : null;

store.addTerms(terms);

// ground statement.
final BigdataStatement s0 = vf.createStatement(SAP, bought, sybase,
		context, StatementEnum.Explicit);

// Setup blank node with SidIV for that Statement.
final BigdataBNode s1 = vf.createBNode("s1");
s1.setStatementIdentifier(true);
final ISPO spo = new SPO(SAP.getIV(), bought.getIV(), sybase.getIV(),
		null/* NO CONTEXT */, StatementEnum.Explicit);
s1.setIV(new SidIV<BigdataBNode>(spo));

// metadata statements.

final BigdataStatement mds1 = vf.createStatement(s1, dcSource,
		newsSybase, context, StatementEnum.Explicit);

final BigdataStatement mds2 = vf.createStatement(s1, dcCreated,
		createdDate, context, StatementEnum.Explicit);

final ISPO[] stmts = new ISPO[] { new SPO(s0), new SPO(mds1), new SPO(mds2) };

store.addStatements(stmts, stmts.length);

/*
 * Now that we have populated the database, we can go ahead and compile
 * the query. (If we compile the query first then it will not find any
 * matching lexical items.)
 */

new TestHelper(TEST_RESOURCE_PREFIX + "rdr-00a", // testURI,
		TEST_RESOURCE_PREFIX + "rdr-02a.rq",// queryFileURL
		TEST_RESOURCE_PREFIX + "empty.ttl",// dataFileURL
		TEST_RESOURCE_PREFIX + "rdr-02a.srx"// resultFileURL
).runTest();

  }
 

/**
 * Test whether the RDRHistory can handle statements that are added
 * and removed in the same commit.
 */
public void testPartiallyRedundantEvents() throws Exception {

    BigdataSailRepositoryConnection cxn = null;

    final BigdataSail sail = getSail(getProperties());

    try {

        sail.initialize();
        final BigdataSailRepository repo = new BigdataSailRepository(sail);
        cxn = (BigdataSailRepositoryConnection) repo.getConnection();

        final BigdataValueFactory vf = (BigdataValueFactory) sail
                .getValueFactory();
        final URI s = vf.createURI(":s");
        final URI p = vf.createURI(":p");
        final Literal o = vf.createLiteral("foo");
        final Literal bar = vf.createLiteral("bar");
        final BigdataStatement stmt = vf.createStatement(s, p, o);
        final BigdataStatement stmt2 = vf.createStatement(s, p, bar);
        final BigdataBNode sid = vf.createBNode(stmt);
        final BigdataBNode sid2 = vf.createBNode(stmt2);

        cxn.add(stmt);
        cxn.commit();

        assertEquals(1, cxn.getTripleStore().getAccessPath(sid, null, null).rangeCount(false));
        
        cxn.remove(stmt);
        cxn.add(stmt);
        cxn.add(stmt2);
        cxn.commit();

        assertEquals(1, cxn.getTripleStore().getAccessPath(sid, null, null).rangeCount(false));
        assertEquals(1, cxn.getTripleStore().getAccessPath(sid2, null, null).rangeCount(false));
        
        
    } finally {
        if (cxn != null)
            cxn.close();
        
        sail.__tearDownUnitTest();
    }
}
 

protected Value parseValue(final String bindingStr, final JsonParser jp) 
        throws QueryResultParseException, JsonParseException, IOException {
    
    String lang = null;
    String type = null;
    String datatype = null;
    String value = null;
    
    // added for Sids support
    final Map<String, Value> sid = new LinkedHashMap<String, Value>();

    while (jp.nextToken() != JsonToken.END_OBJECT) {

        if (jp.getCurrentToken() != JsonToken.FIELD_NAME) {
            throw new QueryResultParseException("Did not find value attribute under "
                    + bindingStr + " field", jp.getCurrentLocation().getLineNr(),
                    jp.getCurrentLocation().getColumnNr());
        }
        String fieldName = jp.getCurrentName();

        // move to the value token
        jp.nextToken();
        
        // set the appropriate state variable
        if (TYPE.equals(fieldName)) {
            type = jp.getText();
        }
        else if (XMLLANG.equals(fieldName)) {
            lang = jp.getText();
        }
        else if (DATATYPE.equals(fieldName)) {
            datatype = jp.getText();
        }
        else if (VALUE.equals(fieldName)) {
            value = jp.getText();
        }
        // added for Sids support
        else if (jp.getCurrentToken() == JsonToken.START_OBJECT) {
            sid.put(fieldName, parseValue(bindingStr, jp));
        }
        else {
            throw new QueryResultParseException("Unexpected field name: " + fieldName,
                    jp.getCurrentLocation().getLineNr(),
                    jp.getCurrentLocation().getColumnNr());

        }
    }
    
    // added for Sids support
    if (type.equals(SID)) {
        
        final Resource s = (Resource) sid.get(SUBJECT);
        final URI p = (URI) sid.get(PREDICATE);
        final Value o = (Value) sid.get(OBJECT);
        final Resource c = (Resource) sid.get(CONTEXT);
        
        if (s == null) {
            throw new QueryResultParseException("Missing subject for statement: " + bindingStr,
                    jp.getCurrentLocation().getLineNr(),
                    jp.getCurrentLocation().getColumnNr());
        }
        
        if (p == null) {
            throw new QueryResultParseException("Missing predicate for statement: " + bindingStr,
                    jp.getCurrentLocation().getLineNr(),
                    jp.getCurrentLocation().getColumnNr());
        }
        
        if (o == null) {
            throw new QueryResultParseException("Missing object for statement: " + bindingStr,
                    jp.getCurrentLocation().getLineNr(),
                    jp.getCurrentLocation().getColumnNr());
        }
        
        final BigdataValueFactory valueFactory = 
                (BigdataValueFactory) super.valueFactory;
        
        final BigdataStatement stmt = valueFactory.createStatement(s, p, o, c);
        
        return valueFactory.createBNode(stmt);
        
    }

    return parseValue(type, value, lang, datatype);
    
}
 

public BigdataStatement toStatement(final BigdataValueFactory vf) {
	
	return vf.createStatement(s, p, o, c);
	
}