Java Code Examples for org.openrdf.model.vocabulary.RDFS#LABEL

/**
 * Test of insert and retrieval of a large literal.
 */
public void test_INSERT_veryLargeLiteral() throws Exception {

    final Graph g = new LinkedHashModel();
    
    final URI s = new URIImpl("http://www.bigdata.com/");
    final URI p = RDFS.LABEL;
    final Literal o = getVeryLargeLiteral();
    final Statement stmt = new StatementImpl(s, p, o);
    g.add(stmt);
    
    // Load the resource into the KB.
    assertEquals(
            1L,
            doInsertByBody("POST", RDFFormat.RDFXML, g, null/* defaultContext */));

    // Read back the data into a graph.
    final Graph g2;
    {
        final String queryStr = "DESCRIBE <" + s.stringValue() + ">";
        final GraphQuery query = cxn.prepareGraphQuery(QueryLanguage.SPARQL, queryStr);
        g2 = asGraph(query.evaluate());
        
    }
    
    assertEquals(1, g2.size());
    
    assertTrue(g2.match(s, p, o).hasNext());
    
}
 

/**
 * Construct an instance with a simple Sesame ValueFactoryImpl.
 */
private BigdataRDFFactory() {
	super(new ValueFactoryImpl(), 
	        GRAPH_NAMESPACE, VERTEX_NAMESPACE, EDGE_NAMESPACE,
	        RDF.TYPE, VERTEX, EDGE, RDFS.LABEL);
}
 

/**
     * Test verifies detection of duplicate terms and their automatic
     * replacement with a canonicalizing term.
     */
    public void test_handleStatement_distinctTerm() {

        final int capacity = 5;

        final AbstractTripleStore store = getStore();

        try {

			final StatementBuffer<Statement> buffer = new StatementBuffer<Statement>(
					store, capacity);

//            assertTrue(buffer.distinct);

            /*
             * add a statement.
             */

            final URI s1 = new URIImpl("http://www.foo.org");
            final URI p1 = RDF.TYPE;
            final URI o1 = RDFS.RESOURCE;
            final URI c1 = null; // no context.

            buffer.handleStatement(s1, p1, o1, c1, StatementEnum.Explicit);

            assertEquals(8, buffer.numURIs);
            assertEquals(0, buffer.numLiterals);
            assertEquals(0, buffer.numBNodes);
            assertEquals(1, buffer.numStmts);

            /*
             * add another statement.
             */

            final URI s2 = new URIImpl("http://www.foo.org"); // duplicate term!
            final URI p2 = RDFS.LABEL;
            final Literal o2 = new LiteralImpl("test lit.");
            final URI c2 = null;

            buffer.handleStatement(s2, p2, o2, c2, StatementEnum.Explicit);

            assertEquals(9, buffer.numURIs); // only 4 since one is duplicate.
            assertEquals(1, buffer.numLiterals);
            assertEquals(0, buffer.numBNodes);
            assertEquals(2, buffer.numStmts);

            /*
             * add a duplicate statement.
             */

            final URI s3 = new URIImpl("http://www.foo.org"); // duplicate term
            final URI p3 = RDFS.LABEL;                        // duplicate term
            final Literal o3 = new LiteralImpl("test lit.");  // duplicate term
            final URI c3 = null;

            buffer.handleStatement(s3, p3, o3, c3, StatementEnum.Explicit);

            assertEquals(9, buffer.numURIs);
            assertEquals(1, buffer.numLiterals);
            assertEquals(0, buffer.numBNodes);
            assertEquals(3, buffer.numStmts);

            /*
             * add a duplicate statement using the _same_ term objects.
             */

            buffer.handleStatement(s3, p3, o3, c3, StatementEnum.Explicit);

            assertEquals(9, buffer.numURIs);
            assertEquals(1, buffer.numLiterals);
            assertEquals(0, buffer.numBNodes);
            assertEquals(4, buffer.numStmts);
            
            buffer.flush();

        } finally {

            store.__tearDownUnitTest();

        }

    }
 

/**
    * {@inheritDoc}
    */
@Override
public URI toPropertyURI(final String property) {
	
	try {

	    if (property.equals("label")) {
	     
	        /*
	         * Label is a reserved property for edge labels, we use
	         * rdfs:label for that.
	         */
	        return RDFS.LABEL;
	        
	    } else {
		
	        return vf.createURI(GRAPH_NAMESPACE, URLEncoder.encode(property, "UTF-8"));
	        
	    }
			
	} catch (UnsupportedEncodingException e) {
		
		throw new RuntimeException(e);
		
	}
	
}
 

/**
* Test verifies interpretation of triples by the {@link StatementBuffer} by
* validating how the triples written onto the statement buffer are loaded
* into the {@link AbstractTripleStore}.
*/
  public void test_statementBuffer() {

      final int capacity = 5;

final Properties properties = new Properties(getProperties());

// turn off entailments.
properties.setProperty(AbstractTripleStore.Options.AXIOMS_CLASS,
		NoAxioms.class.getName());

      final AbstractTripleStore store = getStore(properties);

      try {
      	
      		// store is empty.
      		assertEquals(0,store.getStatementCount());

      		final BigdataValueFactory vf = store.getValueFactory();
      	
	final StatementBuffer<Statement> buffer = new StatementBuffer<Statement>(
			store, capacity);

          /*
           * add a statement.
           */

          final URI s1 = new URIImpl("http://www.foo.org");
          final URI p1 = RDF.TYPE;
          final URI o1 = RDFS.RESOURCE;
          final URI c1 = null; // no context.

          buffer.add(vf.createStatement(s1, p1, o1, c1, StatementEnum.Explicit));

          /*
           * add another statement.
           */

          final URI s2 = new URIImpl("http://www.foo.org"); // duplicate term!
          final URI p2 = RDFS.LABEL;
          final Literal o2 = new LiteralImpl("test lit.");
          final URI c2 = null;

          buffer.add(vf.createStatement(s2, p2, o2, c2, StatementEnum.Explicit));

          /*
           * add a duplicate statement.
           */

          final URI s3 = new URIImpl("http://www.foo.org"); // duplicate term
          final URI p3 = RDFS.LABEL;                        // duplicate term
          final Literal o3 = new LiteralImpl("test lit.");  // duplicate term
          final URI c3 = null;

          buffer.handleStatement(s3, p3, o3, c3, StatementEnum.Explicit);

          // store is still empty (statements are buffered).
          assertEquals(0,store.getStatementCount());

          // flush the buffer.
	buffer.flush();

	// the statements are now in the store.
	assertEquals(2, store.getStatementCount());

	assertTrue(store.hasStatement(s1, p1, o1));
	assertTrue(store.hasStatement(s2, p2, o2));
	assertFalse(store.hasStatement(s1, p2, o1));

      } finally {

          store.__tearDownUnitTest();

      }

  }