Examples with Namespace org.eclipse.rdf4j.model.Namespace used on opensource projects

Example 11 with Namespace

use of org.eclipse.rdf4j.model.Namespace in project rdf4j by eclipse.

the class ModelBuilder method convertPrefixedName.

/**
 * Convert the given prefixed name string to an IRI if possible.
 *
 * @param prefixedName
 *        a prefixed name string, e.g. "rdf:type"
 * @return the IRI corresponding to the prefixed name, or {@code null} if the supplied string couldn't be
 *         converted.
 */
private IRI convertPrefixedName(String prefixedName) {
    if (prefixedName.indexOf(':') < 0) {
        return null;
    }
    final String prefix = prefixedName.substring(0, prefixedName.indexOf(':'));
    final ValueFactory vf = SimpleValueFactory.getInstance();
    for (Namespace ns : model.getNamespaces()) {
        if (prefix.equals(ns.getPrefix())) {
            return vf.createIRI(ns.getName(), prefixedName.substring(prefixedName.indexOf(':') + 1));
        }
    }
    // try mapping using some of the default / well-known namespaces
    for (Namespace ns : getDefaultNamespaces()) {
        if (prefix.equals(ns.getPrefix())) {
            model.setNamespace(ns);
            return vf.createIRI(ns.getName(), prefixedName.substring(prefixedName.indexOf(':') + 1));
        }
    }
    return null;
}

Example 12 with Namespace

use of org.eclipse.rdf4j.model.Namespace in project rdf4j by eclipse.

the class RepositoryConnectionWrapper method exportStatements.

/**
 * Exports all statements contained in the supplied statement iterator and all relevant namespace
 * information to the supplied RDFHandler.
 */
protected void exportStatements(RepositoryResult<Statement> stIter, RDFHandler handler) throws RepositoryException, RDFHandlerException {
    try {
        handler.startRDF();
        // Export namespace information
        RepositoryResult<Namespace> nsIter = getNamespaces();
        try {
            while (nsIter.hasNext()) {
                Namespace ns = nsIter.next();
                handler.handleNamespace(ns.getPrefix(), ns.getName());
            }
        } finally {
            nsIter.close();
        }
        // Export statemnts
        while (stIter.hasNext()) {
            handler.handleStatement(stIter.next());
        }
        handler.endRDF();
    } finally {
        stIter.close();
    }
}

Example 13 with Namespace

use of org.eclipse.rdf4j.model.Namespace in project rdf4j by eclipse.

the class NamespacesTest method testWrapKeySet.

/**
 * Test method for {@link org.eclipse.rdf4j.model.util.Namespaces#wrap(java.util.Set)}.
 */
@Test
public final void testWrapKeySet() throws Exception {
    Set<Namespace> testSet = new LinkedHashSet<Namespace>();
    Map<String, String> testMap = Namespaces.wrap(testSet);
    Set<String> keySet1 = testMap.keySet();
    assertNotNull(keySet1);
    assertTrue(keySet1.isEmpty());
    testSet.add(new SimpleNamespace(testPrefix1, testName1));
    Set<String> keySet2 = testMap.keySet();
    assertNotNull(keySet2);
    assertFalse(keySet2.isEmpty());
    assertEquals(1, keySet2.size());
    String nextKey = keySet2.iterator().next();
    assertEquals(testPrefix1, nextKey);
    testSet.clear();
    Set<String> keySet3 = testMap.keySet();
    assertNotNull(keySet3);
    assertTrue(keySet3.isEmpty());
}

Example 14 with Namespace

use of org.eclipse.rdf4j.model.Namespace in project rdf4j by eclipse.

the class NamespacesTest method testWrapRemove.

/**
 * Test method for {@link org.eclipse.rdf4j.model.util.Namespaces#wrap(java.util.Set)}.
 */
@Test
public final void testWrapRemove() throws Exception {
    Set<Namespace> testSet = new LinkedHashSet<Namespace>();
    Map<String, String> testMap = Namespaces.wrap(testSet);
    assertTrue(testMap.isEmpty());
    assertEquals(0, testMap.size());
    assertTrue(testSet.isEmpty());
    assertEquals(0, testSet.size());
    assertFalse(testMap.containsKey(testPrefix1));
    assertFalse(testMap.containsValue(testName1));
    // Directly add to Set, and then try to remove it using the Map
    testSet.add(new SimpleNamespace(testPrefix1, testName1));
    assertFalse(testMap.isEmpty());
    assertEquals(1, testMap.size());
    assertFalse(testSet.isEmpty());
    assertEquals(1, testSet.size());
    assertTrue(testSet.contains(new SimpleNamespace(testPrefix1, testName1)));
    assertTrue(testMap.containsKey(testPrefix1));
    assertTrue(testMap.containsValue(testName1));
    testSet.remove(new SimpleNamespace(testPrefix1, testName1));
    assertTrue(testMap.isEmpty());
    assertEquals(0, testMap.size());
    assertTrue(testSet.isEmpty());
    assertEquals(0, testSet.size());
    assertFalse(testMap.containsKey(testPrefix1));
    assertFalse(testMap.containsValue(testName1));
    testSet.clear();
    // Try again after clear
    testSet.add(new SimpleNamespace(testPrefix1, testName1));
    assertFalse(testMap.isEmpty());
    assertEquals(1, testMap.size());
    assertFalse(testSet.isEmpty());
    assertEquals(1, testSet.size());
    assertTrue(testSet.contains(new SimpleNamespace(testPrefix1, testName1)));
    assertTrue(testMap.containsKey(testPrefix1));
    assertTrue(testMap.containsValue(testName1));
    testSet.remove(new SimpleNamespace(testPrefix1, testName1));
    assertTrue(testMap.isEmpty());
    assertEquals(0, testMap.size());
    assertTrue(testSet.isEmpty());
    assertEquals(0, testSet.size());
    assertFalse(testMap.containsKey(testPrefix1));
    assertFalse(testMap.containsValue(testName1));
}

Example 15 with Namespace

use of org.eclipse.rdf4j.model.Namespace in project rdf4j by eclipse.

the class NamespacesTest method testAsMapOne.

/**
 * Test method for {@link org.eclipse.rdf4j.model.util.Namespaces#asMap(java.util.Set)}.
 */
@Test
public final void testAsMapOne() {
    Set<Namespace> input = new HashSet<Namespace>();
    input.add(new SimpleNamespace(RDF.PREFIX, RDF.NAMESPACE));
    Map<String, String> map = Namespaces.asMap(input);
    assertFalse(map.isEmpty());
    assertEquals(1, map.size());
    assertTrue(map.containsKey(RDF.PREFIX));
    assertEquals(RDF.NAMESPACE, map.get(RDF.PREFIX));
}