本文整理了Java中org.apache.commons.rdf.api.RDF.createQuad方法的一些代码示例，展示了RDF.createQuad的具体用法。这些代码示例主要来源于Github/Stackoverflow/Maven等平台，是从一些精选项目中提取出来的代码，具有较强的参考意义，能在一定程度帮忙到你。RDF.createQuad方法的具体详情如下：
包路径：org.apache.commons.rdf.api.RDF
类名称：RDF
方法名：createQuad

RDF.createQuad介绍

[英]Create a quad.

The returned Quad SHOULD have a Quad#getGraphName() that is equal to the provided graphName, a Quad#getSubject() that is equal to the provided subject, a Quad#getPredicate() that is equal to the provided predicate, and a Quad#getObject() that is equal to the provided object.
[中]创建一个四边形。
返回的四元组应该有一个四元组#getGraphName（）与提供的graphName相等，一个四元组#getSubject（）与提供的主语相等，一个四元组#getPredicate（）与提供的谓词相等，以及一个四元组#getObject（）与提供的对象相等。

代码示例

代码示例来源：origin: trellis-ldp/trellis

private List<Quad> auditData(final IRI subject, final Session session, final List<IRI> types) {
    final List<Quad> data = new ArrayList<>();
    final BlankNode bnode = rdf.createBlankNode();
    data.add(rdf.createQuad(PreferAudit, subject, PROV.wasGeneratedBy, bnode));
    types.forEach(t -> data.add(rdf.createQuad(PreferAudit, bnode, type, t)));
    data.add(rdf.createQuad(PreferAudit, bnode, PROV.wasAssociatedWith, session.getAgent()));
    data.add(rdf.createQuad(PreferAudit, bnode, PROV.atTime,
          rdf.createLiteral(session.getCreated().toString(), XSD.dateTime)));
    session.getDelegatedBy().ifPresent(delegate ->
        data.add(rdf.createQuad(PreferAudit, bnode, PROV.actedOnBehalfOf, delegate)));
    return data;
  }
}

代码示例来源：origin: org.trellisldp/trellis-api

/**
 * Get a mapping function to turn a triple into a quad.
 *
 * @param graphName the graph name
 * @return the mapping function
 */
public static Function<Triple, Quad> toQuad(final IRI graphName) {
  return triple -> rdf.createQuad(graphName, triple.getSubject(), triple.getPredicate(), triple.getObject());
}

代码示例来源：origin: org.trellisldp.ext/trellis-db

private Stream<Quad> fetchQuadsFromTable(final String tableName, final IRI graphName) {
  final String query = "SELECT subject, predicate, object, lang, datatype "
            + "FROM " + tableName + " WHERE resource_id = ?";
  return jdbi.withHandle(handle -> handle.select(query, data.getId())
      .map((rs, ctx) -> rdf.createQuad(graphName, rdf.createIRI(rs.getString(SUBJECT)),
          rdf.createIRI(rs.getString(PREDICATE)),
          getObject(rs.getString(OBJECT), rs.getString(LANG), rs.getString(DATATYPE))))
      .stream());
}

代码示例来源：origin: trellis-ldp/trellis

/**
 * Get a mapping function to turn a triple into a quad.
 *
 * @param graphName the graph name
 * @return the mapping function
 */
public static Function<Triple, Quad> toQuad(final IRI graphName) {
  return triple -> rdf.createQuad(graphName, triple.getSubject(), triple.getPredicate(), triple.getObject());
}

代码示例来源：origin: org.trellisldp.ext/trellis-db

/**
 * Fetch a stream of the audit-related quads.
 */
private Stream<Quad> fetchAuditQuads() {
  final String query = "SELECT subject, predicate, object, lang, datatype FROM log WHERE id = ?";
  return jdbi.withHandle(handle -> handle.select(query, getIdentifier().getIRIString())
      .map((rs, ctx) -> rdf.createQuad(Trellis.PreferAudit, rdf.createIRI(rs.getString(SUBJECT)),
          rdf.createIRI(rs.getString(PREDICATE)),
          getObject(rs.getString(OBJECT), rs.getString(LANG), rs.getString(DATATYPE))))
      .stream());
}

代码示例来源：origin: trellis-ldp/trellis

private static Quad createQuad(final BlankNodeOrIRI g, final BlankNodeOrIRI s, final IRI p, final RDFTerm o) {
  return TrellisUtils.getInstance().createQuad(g, s, p, o);
}

代码示例来源：origin: trellis-ldp/trellis

private Stream<Quad> getLdfQuads() {
  return Stream.of(
    rdf.createQuad(PreferUserManaged, identifier, DC.creator, rdf.createLiteral("User")),
    rdf.createQuad(PreferUserManaged, rdf.createIRI("ex:foo"), DC.title, rdf.createIRI("ex:title")),
    rdf.createQuad(PreferUserManaged, identifier, DC.title, rdf.createLiteral("A title")),
    rdf.createQuad(PreferUserManaged, identifier, DC.title, rdf.createLiteral("Other title")),
    rdf.createQuad(PreferUserManaged, identifier, type, rdf.createIRI("ex:Type")),
    rdf.createQuad(PreferUserManaged, rdf.createIRI("ex:foo"), type, rdf.createIRI("ex:Type")),
    rdf.createQuad(PreferUserManaged, rdf.createIRI("ex:foo"), type, rdf.createIRI("ex:Other")),
    rdf.createQuad(PreferServerManaged, identifier, DC.created,
      rdf.createLiteral("2017-04-01T10:15:00Z", XSD.dateTime)),
    rdf.createQuad(PreferAccessControl, identifier, type, ACL.Authorization),
    rdf.createQuad(PreferAccessControl, identifier, ACL.mode, ACL.Control));
}

代码示例来源：origin: org.trellisldp.ext/trellis-db

/**
 * Fetch a stream of containment quads for a resource.
 */
private Stream<Quad> fetchContainmentQuads() {
  if (getInteractionModel().getIRIString().endsWith("Container")) {
    final String query = "SELECT subject FROM resource WHERE is_part_of = ?";
    return jdbi.withHandle(handle -> handle.select(query,
          getIdentifier().getIRIString())
        .map((rs, ctx) -> rdf.createQuad(LDP.PreferContainment, getIdentifier(),
            LDP.contains, rdf.createIRI(rs.getString(SUBJECT))))
        .stream());
  }
  return empty();
}

代码示例来源：origin: trellis-ldp/trellis

/**
 * Convert quads from a skolemized form to an external form.
 *
 * @param svc the resource service
 * @param baseUrl the base URL
 * @return a mapping function
 */
public static Function<Quad, Quad> unskolemizeQuads(final ResourceService svc, final String baseUrl) {
  return quad -> rdf.createQuad(quad.getGraphName().orElse(PreferUserManaged),
        (BlankNodeOrIRI) svc.toExternal(svc.unskolemize(quad.getSubject()), baseUrl),
        quad.getPredicate(), svc.toExternal(svc.unskolemize(quad.getObject()), baseUrl));
}

代码示例来源：origin: trellis-ldp/trellis

@Test
public void testResourceWithQuads() {
  final IRI subject = rdf.createIRI("ex:subject");
  when(mockResource.stream()).thenAnswer((x) -> of(
        rdf.createQuad(prefer, subject, DC.title, rdf.createLiteral("A title")),
        rdf.createQuad(PreferUserManaged, subject, DC.title, rdf.createLiteral("Other title"))));
  assertEquals(1L, mockResource.stream(prefer).count(), "Resource stream has wrong number of triples!");
  assertEquals(1L, mockResource.stream(singleton(prefer)).count(), "Resource has wrong number of triples!");
}

代码示例来源：origin: trellis-ldp/trellis

/**
 * Convert quads from an external form to a skolemized form.
 *
 * @param svc the resource service
 * @param baseUrl the base URL
 * @return a mapping function
 */
public static Function<Quad, Quad> skolemizeQuads(final ResourceService svc, final String baseUrl) {
  return quad -> rdf.createQuad(quad.getGraphName().orElse(PreferUserManaged),
      (BlankNodeOrIRI) svc.toInternal(svc.skolemize(quad.getSubject()), baseUrl), quad.getPredicate(),
      svc.toInternal(svc.skolemize(quad.getObject()), baseUrl));
}

代码示例来源：origin: trellis-ldp/trellis

@Test
public void testDatasetCombiner() {
  final Set<Quad> quads1 = generate(() -> rdf.createQuad(getIRI(), getIRI(), getIRI(), getIRI()))
    .parallel().limit(size).collect(toSet());
  final Set<Quad> quads2 = generate(() -> rdf.createQuad(getIRI(), getIRI(), getIRI(), getIRI()))
    .parallel().limit(size).collect(toSet());
  final Collector<Quad, Set<Quad>, Dataset> collector = toDataset().concurrent();
  assertEquals(quads1.size() + quads2.size(), collector.combiner().apply(quads1, quads2).size(),
      "Dataset combiner produces the wrong number of quads!");
}

代码示例来源：origin: trellis-ldp/trellis

@Test
public void testDatasetCollectorFinisher() {
  final Dataset dataset = generate(() -> rdf.createQuad(getIRI(), getIRI(), getIRI(), getIRI()))
    .parallel().limit(size).collect(toDataset());
  final TrellisUtils.DatasetCollector collector = toDataset();
  assertEquals(dataset, collector.finisher().apply(dataset), "Dataset finisher returns the wrong object!");
}

代码示例来源：origin: trellis-ldp/trellis

@Test
public void testCollectDataset() {
  final Dataset dataset = generate(() -> rdf.createQuad(getIRI(), getIRI(), getIRI(), getIRI()))
    .parallel().limit(size).collect(toDataset());
  assertTrue(size >= dataset.size(), "Generated dataset has too many triples!");
}

代码示例来源：origin: trellis-ldp/trellis

@Test
public void testToQuad() {
  final IRI subject = rdf.createIRI("http://example.com/resource");
  final Literal object = rdf.createLiteral("title");
  final Triple triple = rdf.createTriple(subject, DC.title, object);
  final Quad quad = rdf.createQuad(Trellis.PreferUserManaged, subject, DC.title, object);
  assertEquals(quad, toQuad(Trellis.PreferUserManaged).apply(triple), "Incorrect quad from triple!");
}

代码示例来源：origin: trellis-ldp/trellis

@Test
public void testCollectDatasetConcurrent() {
  final Dataset dataset = generate(() -> rdf.createQuad(getIRI(), getIRI(), getIRI(), getIRI()))
    .parallel().limit(size).collect(toDataset().concurrent());
  assertTrue(size >= dataset.size(), "Generated dataset has too many triples!");
}

代码示例来源：origin: trellis-ldp/trellis

@Test
public void testSerializeQuadDefaultGraph() {
  final Quad quad = rdf.createQuad(null, rdf.createIRI("trellis:data/resource"),
      DC.subject, rdf.createIRI("http://example.org"));
  assertEquals("<trellis:data/resource> <http://purl.org/dc/terms/subject> <http://example.org> .",
      FileUtils.serializeQuad(quad),
      "Triple isn't serialized properly!");
}

代码示例来源：origin: trellis-ldp/trellis

@Test
public void testSerializeQuad() {
  final Quad quad = rdf.createQuad(Trellis.PreferServerManaged, rdf.createIRI("trellis:data/resource"),
      DC.subject, rdf.createIRI("http://example.org"));
  assertEquals("<trellis:data/resource> <http://purl.org/dc/terms/subject> <http://example.org> "
      + "<http://www.trellisldp.org/ns/trellis#PreferServerManaged> .", FileUtils.serializeQuad(quad),
      "Quad isn't serialized properly!");
}

代码示例来源：origin: trellis-ldp/trellis

@Test
public void testDatasetConversion() {
  final Dataset dataset = simpleRdf.createDataset();
  dataset.add(simpleRdf.createQuad(PreferUserManaged, subject, SKOS.prefLabel, literal));
  dataset.add(simpleRdf.createQuad(PreferUserManaged, subject, type, SKOS.Concept));
  dataset.add(simpleRdf.createQuad(PreferUserManaged, subject, DC.subject, AS.Activity));
  assertEquals(3L, dataset.size(), "Confirm dataset size");
  assertTrue(TriplestoreUtils.asJenaDataset(dataset).containsNamedModel(PreferUserManaged.getIRIString()),
      "Confirm presence of trellis:PreferUserManaged named graph");
  assertNotEquals(TriplestoreUtils.asJenaDataset(dataset).asDatasetGraph(),
      TriplestoreUtils.asJenaDataset(dataset).asDatasetGraph(), "Confirm dataset has been converted");
}

代码示例来源：origin: trellis-ldp/trellis

@Test
public void testDatasetNoConversion() {
  final Dataset dataset = jenaRdf.createDataset();
  dataset.add(jenaRdf.createQuad(PreferUserManaged, subject, SKOS.prefLabel, literal));
  dataset.add(jenaRdf.createQuad(PreferUserManaged, subject, type, SKOS.Concept));
  dataset.add(jenaRdf.createQuad(PreferUserManaged, subject, DC.subject, AS.Activity));
  assertEquals(3L, dataset.size(), "Confirm dataset size");
  assertTrue(TriplestoreUtils.asJenaDataset(dataset).containsNamedModel(PreferUserManaged.getIRIString()),
      "Confirm presence of trellis:PreferUserManaged named graph");
  assertEquals(TriplestoreUtils.asJenaDataset(dataset).asDatasetGraph(),
      TriplestoreUtils.asJenaDataset(dataset).asDatasetGraph(), "Confirm datasets are equal");
}