org.apache.commons.rdf.api.Graph.contains()方法的使用及代码示例

x33g5p2x  于2022-01-20 转载在 其他  
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本文整理了Java中org.apache.commons.rdf.api.Graph.contains()方法的一些代码示例，展示了Graph.contains()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。Graph.contains()方法的具体详情如下：
包路径：org.apache.commons.rdf.api.Graph
类名称：Graph
方法名：contains

Graph.contains介绍

[英]Check if graph contains a pattern of triples.
[中]检查图形是否包含三元组模式。

代码示例

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

private static boolean hasMembershipProps(final Graph graph) {
  return graph.contains(null, LDP.membershipResource, null)
      && (graph.stream(null, LDP.hasMemberRelation, null).count()
        + graph.stream(null, LDP.isMemberOfRelation, null).count() == 1L);
}

代码示例来源：origin: trellis-ldp/trellis

private static boolean hasMembershipProps(final Graph graph) {
  return graph.contains(null, LDP.membershipResource, null)
      && (graph.stream(null, LDP.hasMemberRelation, null).count()
        + graph.stream(null, LDP.isMemberOfRelation, null).count() == 1L);
}

代码示例来源：origin: trellis-ldp/trellis

/**
   * Check an RDF graph.
   * @param graph the graph
   * @param identifier the identifier
   * @return a stream of testable assertions
   */
  default Stream<Executable> checkRdfGraph(final Graph graph, final IRI identifier) {
    return Stream.of(
        () -> assertTrue(graph.contains(identifier, SKOS.prefLabel,
                        getInstance().createLiteral(BASIC_CONTAINER_LABEL, ENG)),
                 "Check for the presence of a skos:prefLabel triple"),
        () -> assertTrue(graph.contains(identifier, DC.description, null),
                 "Check for the presence fo a dc:description triple"));
  }
}

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

/**
   * Check an RDF graph.
   * @param graph the graph
   * @param identifier the identifier
   * @return a stream of testable assertions
   */
  default Stream<Executable> checkRdfGraph(final Graph graph, final IRI identifier) {
    return Stream.of(
        () -> assertTrue(graph.contains(identifier, SKOS.prefLabel,
                        getInstance().createLiteral(BASIC_CONTAINER_LABEL, ENG)),
                 "Check for the presence of a skos:prefLabel triple"),
        () -> assertTrue(graph.contains(identifier, DC.description, null),
                 "Check for the presence fo a dc:description triple"));
  }
}

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

private static Predicate<Graph> checkCardinality(final IRI model) {
  return graph -> {
    if (LDP.IndirectContainer.equals(model)) {
      if (!graph.contains(null, LDP.insertedContentRelation, null) || !hasMembershipProps(graph)) {
        return true;
      }
    } else if (LDP.DirectContainer.equals(model) && !hasMembershipProps(graph)) {
      return true;
    }
    return propertiesWithUriRange.stream().anyMatch(p -> graph.stream(null, p, null).count() > 1);
  };
}

代码示例来源：origin: trellis-ldp/trellis

private static Predicate<Graph> checkCardinality(final IRI model) {
  return graph -> {
    if (LDP.IndirectContainer.equals(model)) {
      if (!graph.contains(null, LDP.insertedContentRelation, null) || !hasMembershipProps(graph)) {
        return true;
      }
    } else if (LDP.DirectContainer.equals(model) && !hasMembershipProps(graph)) {
      return true;
    }
    return propertiesWithUriRange.stream().anyMatch(p -> graph.stream(null, p, null).count() > 1);
  };
}

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

/**
 * Test with ldp:PreferMinimalContainer Prefer header.
 */
@Test
@DisplayName("Test with ldp:PreferMinimalContainer Prefer header")
default void testGetEmptyMember() {
  final RDF rdf = getInstance();
  try (final Response res = target(getMemberLocation()).request().header(PREFER,
        "return=representation; include=\"" + LDP.PreferMinimalContainer.getIRIString() + "\"").get()) {
    assertAll("Check the LDP-RS with Prefer", checkRdfResponse(res, LDP.RDFSource, TEXT_TURTLE_TYPE));
    final Graph g = readEntityAsGraph(res.getEntity(), getBaseURL(), TURTLE);
    final IRI identifier = rdf.createIRI(getMemberLocation());
    assertTrue(g.contains(identifier, SKOS.prefLabel, null), "Check for a skos:prefLabel triple");
    assertFalse(g.contains(identifier, LDP.member, null), "Check for no ldp:member triples");
    assertFalse(g.contains(identifier, DC.relation, null), "Check for no dc:relation triples");
  }
}

代码示例来源：origin: org.apache.commons/commons-rdf-api

@Test
public void getGraph1() throws Exception {
  // graph1 should be present
  try (final Graph g1 = dataset.getGraph(graph1).get()) {
    assertEquals(4, g1.size());
    assertTrue(g1.contains(alice, name, aliceName));
    assertTrue(g1.contains(alice, knows, bob));
    assertTrue(g1.contains(alice, member, null));
    assertTrue(g1.contains(null, name, secretClubName));
  }
}

代码示例来源：origin: org.apache.commons/commons-rdf-api

@Test
public void getGraph2() throws Exception {
  // graph2 should be present, even if is named by a BlankNode
  // We'll look up the potentially mapped graph2 blanknode
  final BlankNodeOrIRI graph2Name = (BlankNodeOrIRI) dataset.stream(Optional.empty(), bob, isPrimaryTopicOf, null)
      .map(Quad::getObject).findAny().get();
  try (final Graph g2 = dataset.getGraph(graph2Name).get()) {
    assertEquals(4, g2.size());
    final Triple bobNameTriple = bobNameQuad.asTriple();
    assertTrue(g2.contains(bobNameTriple));
    assertTrue(g2.contains(bob, member, bnode1));
    assertTrue(g2.contains(bob, member, bnode2));
    assertFalse(g2.contains(bnode1, name, secretClubName));
    assertTrue(g2.contains(bnode2, name, companyName));
  }
}

代码示例来源：origin: org.apache.commons/commons-rdf-api

@Test
public void getGraphNull() throws Exception {
  // Default graph should be present
  try (final Graph defaultGraph = dataset.getGraph(null).get()) {
    // TODO: Can we assume the default graph was empty before our new triples?
    assertEquals(2, defaultGraph.size());
    assertTrue(defaultGraph.contains(alice, isPrimaryTopicOf, graph1));
    // NOTE: wildcard as graph2 is a (potentially mapped) BlankNode
    assertTrue(defaultGraph.contains(bob, isPrimaryTopicOf, null));
  }
}

代码示例来源：origin: trellis-ldp/trellis

/**
 * Test that the binary appears in the parent container.
 */
@Test
@DisplayName("Test that the binary appears in the parent container")
default void testBinaryIsInContainer() {
  final RDF rdf = getInstance();
  // Test the root container, verifying that the containment triple exists
  try (final Response res = target().request().get()) {
    assertAll("Check binary in container", checkRdfResponse(res, LDP.BasicContainer, null));
    final Graph g = readEntityAsGraph(res.getEntity(), getBaseURL(), TURTLE);
    assertTrue(g.contains(rdf.createIRI(getBaseURL()), LDP.contains,
          rdf.createIRI(getResourceLocation())), "Check for an ldp:contains triple");
  }
}

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

/**
 * Verify that the correct containment triples exist.
 */
@Test
@DisplayName("Verify that the correct containment triples exist")
default void testRdfContainment() {
  final RDF rdf = getInstance();
  // Test the root container, verifying that the containment triple exists
  try (final Response res = target().request().get()) {
    assertAll("Check a container resource", checkRdfResponse(res, LDP.BasicContainer, TEXT_TURTLE_TYPE));
    final Graph g = readEntityAsGraph(res.getEntity(), getBaseURL(), TURTLE);
    assertTrue(g.contains(rdf.createIRI(getBaseURL()), LDP.contains,
          rdf.createIRI(getResourceLocation())), "Check for an ldp:contains property");
  }
}

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

/**
 * Test that the binary appears in the parent container.
 */
@Test
@DisplayName("Test that the binary appears in the parent container")
default void testBinaryIsInContainer() {
  final RDF rdf = getInstance();
  // Test the root container, verifying that the containment triple exists
  try (final Response res = target().request().get()) {
    assertAll("Check binary in container", checkRdfResponse(res, LDP.BasicContainer, null));
    final Graph g = readEntityAsGraph(res.getEntity(), getBaseURL(), TURTLE);
    assertTrue(g.contains(rdf.createIRI(getBaseURL()), LDP.contains,
          rdf.createIRI(getResourceLocation())), "Check for an ldp:contains triple");
  }
}

代码示例来源：origin: org.apache.commons/commons-rdf-api

@Test
public void getGraph() throws Exception {
  try (final Graph defaultGraph = dataset.getGraph()) {
    // TODO: Can we assume the default graph was empty before our new triples?
    assertEquals(2, defaultGraph.size());
    assertTrue(defaultGraph.contains(alice, isPrimaryTopicOf, graph1));
    // NOTE: graph2 is a BlankNode
    assertTrue(defaultGraph.contains(bob, isPrimaryTopicOf, null));
  }
}

代码示例来源：origin: org.apache.commons/commons-rdf-api

@Test
public void contains() throws Exception {
  assertTrue(graph.contains(new DummyTriple()));
}

代码示例来源：origin: org.apache.commons/commons-rdf-api

@Test
public void containsSPO() throws Exception {
  assertTrue(graph.contains(null, null, null));
  assertTrue(graph.contains(new DummyIRI(1), new DummyIRI(2), new DummyIRI(3)));
  assertFalse(graph.contains(new DummyIRI(0), new DummyIRI(0), new DummyIRI(0)));
}

代码示例来源：origin: commons-rdf/commons-rdf

@Test
public void getTriples() throws Exception {
  long tripleCount = graph.getTriples().count();
  assertTrue(tripleCount > 0);
  assertTrue(graph.getTriples().allMatch(t -> graph.contains(t)));
  // Check exact count
  Assume.assumeNotNull(org1, org2, aliceName, bobName, secretClubName,
      companyName, bobNameTriple);
  assertEquals(8, tripleCount);
}

代码示例来源：origin: org.apache.commons/commons-rdf-api

@Test
public void getTriples() throws Exception {
  long tripleCount;
  try (Stream<? extends Triple> stream = graph.stream()) {
    tripleCount = stream.count();
  }
  assertTrue(tripleCount > 0);
  try (Stream<? extends Triple> stream = graph.stream()) {
    assertTrue(stream.allMatch(t -> graph.contains(t)));
  }
  // Check exact count
  Assume.assumeNotNull(bnode1, bnode2, aliceName, bobName, secretClubName, companyName, bobNameTriple);
  assertEquals(8, tripleCount);
}

代码示例来源：origin: org.apache.commons/commons-rdf-api

@Test
public void clear() throws Exception {
  graph.clear();
  assertFalse(graph.contains(alice, knows, bob));
  assertEquals(0, graph.size());
  graph.clear(); // no-op
  assertEquals(0, graph.size());
}

代码示例来源：origin: commons-rdf/commons-rdf

@Test
public void clear() throws Exception {
  graph.clear();
  assertFalse(graph.contains(alice, knows, bob));
  assertEquals(0, graph.size());
  graph.clear(); // no-op
  assertEquals(0, graph.size());
}

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