org.apache.tinkerpop.gremlin.structure.Vertex.value()方法的使用及代码示例

x33g5p2x  于2022-01-31 转载在 其他  
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本文整理了Java中org.apache.tinkerpop.gremlin.structure.Vertex.value()方法的一些代码示例，展示了Vertex.value()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。Vertex.value()方法的具体详情如下：
包路径：org.apache.tinkerpop.gremlin.structure.Vertex
类名称：Vertex
方法名：value

Vertex.value介绍

暂无

代码示例

代码示例来源：origin: thinkaurelius/titan

@Override
public void execute(Vertex vertex, Messenger<Double> messenger, Memory memory) {
  if (memory.isInitialIteration()) {
    messenger.sendMessage(inE, 1D);
  } else if (1 == memory.getIteration()) {
    double initialPageRank = 1D / vertexCount;
    double edgeCount = IteratorUtils.stream(messenger.receiveMessages()).reduce(0D, (a, b) -> a + b);
    vertex.property(VertexProperty.Cardinality.single, PAGE_RANK, initialPageRank);
    vertex.property(VertexProperty.Cardinality.single, OUTGOING_EDGE_COUNT, edgeCount);
    messenger.sendMessage(outE, initialPageRank / edgeCount);
  } else {
    double newPageRank = IteratorUtils.stream(messenger.receiveMessages()).reduce(0D, (a, b) -> a + b);
    newPageRank =  (dampingFactor * newPageRank) + ((1D - dampingFactor) / vertexCount);
    vertex.property(VertexProperty.Cardinality.single, PAGE_RANK, newPageRank);
    messenger.sendMessage(outE, newPageRank / vertex.<Double>value(OUTGOING_EDGE_COUNT));
  }
}

代码示例来源：origin: thinkaurelius/titan

@Test
public void testSimpleUpdate() {
  PropertyKey name = makeKey("name", String.class);
  EdgeLabel knows = makeLabel("knows");
  mgmt.buildIndex("namev", Vertex.class).addKey(name).buildMixedIndex(INDEX);
  mgmt.buildIndex("namee", Edge.class).addKey(name).buildMixedIndex(INDEX);
  finishSchema();
  TitanVertex v = tx.addVertex("name", "Marko Rodriguez");
  Edge e = v.addEdge("knows", v, "name", "Hulu Bubab");
  assertCount(1, tx.query().has("name", Text.CONTAINS, "marko").vertices());
  assertCount(1, tx.query().has("name", Text.CONTAINS, "Hulu").edges());
  for (Vertex u : tx.getVertices()) assertEquals("Marko Rodriguez", u.value("name"));
  clopen();
  assertCount(1, tx.query().has("name", Text.CONTAINS, "marko").vertices());
  assertCount(1, tx.query().has("name", Text.CONTAINS, "Hulu").edges());
  for (Vertex u : tx.getVertices()) assertEquals("Marko Rodriguez", u.value("name"));
  v = getOnlyVertex(tx.query().has("name", Text.CONTAINS, "marko"));
  v.property(VertexProperty.Cardinality.single, "name", "Marko");
  e = getOnlyEdge(v.query().direction(Direction.OUT));
  e.property("name", "Tubu Rubu");
  assertCount(1, tx.query().has("name", Text.CONTAINS, "marko").vertices());
  assertCount(1, tx.query().has("name", Text.CONTAINS, "Rubu").edges());
  assertCount(0, tx.query().has("name", Text.CONTAINS, "Hulu").edges());
  for (Vertex u : tx.getVertices()) assertEquals("Marko", u.value("name"));
  clopen();
  assertCount(1, tx.query().has("name", Text.CONTAINS, "marko").vertices());
  assertCount(1, tx.query().has("name", Text.CONTAINS, "Rubu").edges());
  assertCount(0, tx.query().has("name", Text.CONTAINS, "Hulu").edges());
  for (Vertex u : tx.getVertices()) assertEquals("Marko", u.value("name"));
}

代码示例来源：origin: thinkaurelius/titan

@Test
public void testDualMapping() {
  if (!indexFeatures.supportsStringMapping(Mapping.TEXTSTRING)) return;
    String n = u.<String>value("name");
    if (n.endsWith("Don")) {
      u.remove();
    } else if (n.endsWith("Lewis")) {
      u.property(VertexProperty.Cardinality.single, "name", "Big Brother Bob");
    } else if (n.endsWith("Mabel")) {
      u.property("name").remove();

代码示例来源：origin: apache/tinkerpop

@Test
@LoadGraphWith(MODERN)
public void g_V_order_byXoutE_count_descX() {
  Arrays.asList(get_g_V_order_byXoutE_count_descX()).forEach(traversal -> {
    printTraversalForm(traversal);
    final List<Vertex> vertices = traversal.toList();
    assertEquals(vertices.size(), 6);
    assertEquals("marko", vertices.get(0).value("name"));
    assertEquals("josh", vertices.get(1).value("name"));
    assertEquals("peter", vertices.get(2).value("name"));
    assertTrue(vertices.get(3).value("name").equals("vadas") || vertices.get(3).value("name").equals("ripple") || vertices.get(3).value("name").equals("lop"));
    assertTrue(vertices.get(4).value("name").equals("vadas") || vertices.get(4).value("name").equals("ripple") || vertices.get(4).value("name").equals("lop"));
    assertTrue(vertices.get(5).value("name").equals("vadas") || vertices.get(5).value("name").equals("ripple") || vertices.get(5).value("name").equals("lop"));
  });
}

代码示例来源：origin: hugegraph/hugegraph

@Test
public void testQueryVertexWithNullablePropertyInCompositeIndex() {
  HugeGraph graph = graph();
  initComputerIndex();
  graph.addVertex(T.label, "computer", "name", "1st", "band", "10Gbps",
          "cpu", "2GHz", "ram", "8GB", "price", 1000);
  graph.tx().commit();
  List<Vertex> vl = graph.traversal().V().has("cpu", "2GHz").toList();
  Assert.assertEquals(1, vl.size());
  Assert.assertEquals("1st", vl.get(0).value("name"));
  vl = graph.traversal().V().has("cpu", "2GHz")
       .has("ram", "8GB").toList();
  Assert.assertEquals(1, vl.size());
  Assert.assertEquals("1st", vl.get(0).value("name"));
}

代码示例来源：origin: apache/tinkerpop

private void assert_g_v1_out(final Traversal<Vertex, Vertex> traversal) {
  printTraversalForm(traversal);
  int counter = 0;
  final Set<Vertex> vertices = new HashSet<>();
  while (traversal.hasNext()) {
    counter++;
    final Vertex vertex = traversal.next();
    vertices.add(vertex);
    assertTrue(vertex.value("name").equals("vadas") ||
        vertex.value("name").equals("josh") ||
        vertex.value("name").equals("lop"));
  }
  assertEquals(3, counter);
  assertEquals(3, vertices.size());
}

代码示例来源：origin: apache/tinkerpop

@Override
public void execute(final Vertex vertex, final Messenger<Object> messenger, final Memory memory) {
  try {
    vertex.property(VertexProperty.Cardinality.single, "blah", "blah");
    fail("Should throw an IllegalArgumentException");
  } catch (final IllegalArgumentException e) {
    assertEquals(GraphComputer.Exceptions.providedKeyIsNotAnElementComputeKey("blah").getMessage(), e.getMessage());
  } catch (final Exception e) {
    fail("Should throw an IllegalArgumentException: " + e);
  }
  memory.add("a", 1);
  if (memory.isInitialIteration()) {
    vertex.property(VertexProperty.Cardinality.single, "nameLengthCounter", vertex.<String>value("name").length());
    memory.add("b", vertex.<String>value("name").length());
  } else {
    vertex.property(VertexProperty.Cardinality.single, "nameLengthCounter", vertex.<String>value("name").length() + vertex.<Integer>value("nameLengthCounter"));
  }
}

代码示例来源：origin: apache/tinkerpop

@Override
public Traversal<Vertex, Vertex> get_g_V_filterXname_startsWith_m_OR_name_startsWith_pX() {
  return g.V().filter(v -> {
    final String name = v.get().value("name");
    return name.startsWith("m") || name.startsWith("p");
  });
}

代码示例来源：origin: apache/tinkerpop

@Test
@LoadGraphWith(MODERN)
public void g_VX4X_bothE_otherV() {
  final Traversal<Vertex, Vertex> traversal = get_g_VX4X_bothE_otherV(convertToVertexId("josh"));
  printTraversalForm(traversal);
  final List<Vertex> vertices = traversal.toList();
  assertEquals(3, vertices.size());
  assertTrue(vertices.stream().anyMatch(v -> v.value("name").equals("marko")));
  assertTrue(vertices.stream().anyMatch(v -> v.value("name").equals("ripple")));
  assertTrue(vertices.stream().anyMatch(v -> v.value("name").equals("lop")));
  assertFalse(traversal.hasNext());
}

代码示例来源：origin: hugegraph/hugegraph

@Test
public void testQueryWithTxNotCommittedByIntProp() {
  HugeGraph graph = graph();
  initPersonIndex(false);
  graph.addVertex(T.label, "person", "name", "marko",
          "age", 18, "city", "Beijing");
  List<Vertex> vertices;
  vertices = graph.traversal().V().has("age", 18).toList();
  Assert.assertEquals(1, vertices.size());
  Assert.assertEquals(18, (int) vertices.get(0).<Integer>value("age"));
  graph.tx().rollback();
  vertices = graph.traversal().V("person:marko").toList();
  Assert.assertEquals(0, vertices.size());
  // TODO: add test for: append, eliminate, remove
}

代码示例来源：origin: JanusGraph/janusgraph

@Test
public void testSimpleUpdate() {
  final PropertyKey name = makeKey("name", String.class);
  makeLabel("knows");
  mgmt.buildIndex("namev", Vertex.class).addKey(name).buildMixedIndex(INDEX);
  mgmt.buildIndex("namee", Edge.class).addKey(name).buildMixedIndex(INDEX);
  finishSchema();
  JanusGraphVertex v = tx.addVertex("name", "Marko Rodriguez");
  Edge e = v.addEdge("knows", v, "name", "Hulu Bubab");
  assertCount(1, tx.query().has("name", Text.CONTAINS, "marko").vertices());
  assertCount(1, tx.query().has("name", Text.CONTAINS, "Hulu").edges());
  for (final Vertex u : tx.getVertices()) assertEquals("Marko Rodriguez", u.value("name"));
  clopen();
  assertCount(1, tx.query().has("name", Text.CONTAINS, "marko").vertices());
  assertCount(1, tx.query().has("name", Text.CONTAINS, "Hulu").edges());
  for (final Vertex u : tx.getVertices()) assertEquals("Marko Rodriguez", u.value("name"));
  v = getOnlyVertex(tx.query().has("name", Text.CONTAINS, "marko"));
  v.property(VertexProperty.Cardinality.single, "name", "Marko");
  e = getOnlyEdge(v.query().direction(Direction.OUT));
  e.property("name", "Tubu Rubu");
  assertCount(1, tx.query().has("name", Text.CONTAINS, "marko").vertices());
  assertCount(1, tx.query().has("name", Text.CONTAINS, "Rubu").edges());
  assertCount(0, tx.query().has("name", Text.CONTAINS, "Hulu").edges());
  for (final Vertex u : tx.getVertices()) assertEquals("Marko", u.value("name"));
  clopen();
  assertCount(1, tx.query().has("name", Text.CONTAINS, "marko").vertices());
  assertCount(1, tx.query().has("name", Text.CONTAINS, "Rubu").edges());
  assertCount(0, tx.query().has("name", Text.CONTAINS, "Hulu").edges());
  for (final Vertex u : tx.getVertices()) assertEquals("Marko", u.value("name"));
}

代码示例来源：origin: apache/tinkerpop

private void assert_g_v1_outXknowsX(final Traversal<Vertex, Vertex> traversal) {
  printTraversalForm(traversal);
  int counter = 0;
  final Set<Vertex> vertices = new HashSet<>();
  while (traversal.hasNext()) {
    counter++;
    final Vertex vertex = traversal.next();
    vertices.add(vertex);
    assertTrue(vertex.value("name").equals("vadas") ||
        vertex.value("name").equals("josh"));
  }
  assertEquals(2, counter);
  assertEquals(2, vertices.size());
}

代码示例来源：origin: JanusGraph/janusgraph

@Test
public void testDualMapping() {
  if (!indexFeatures.supportsStringMapping(Mapping.TEXTSTRING)) return;
      1, new boolean[]{true, true}, "mixed");
  for (final Vertex u : tx.getVertices()) {
    final String n = u.value("name");
    if (n.endsWith("Don")) {
      u.remove();
    } else if (n.endsWith("Lewis")) {
      u.property(VertexProperty.Cardinality.single, "name", "Big Brother Bob");
    } else if (n.endsWith("Mabel")) {
      u.property("name").remove();

代码示例来源：origin: apache/tinkerpop

@Override
public Traversal<Vertex, Map<Integer, Integer>> get_g_VX1X_hasXlabel_personX_mapXmapXint_ageXX_orderXlocalX_byXvalues_descX_byXkeys_ascX(final Object v1Id) {
  return g.V(v1Id).hasLabel("person").map(v -> {
    final Map<Integer, Integer> map = new HashMap<>();
    map.put(1, (int) v.get().value("age"));
    map.put(2, (int) v.get().value("age") * 2);
    map.put(3, (int) v.get().value("age") * 3);
    map.put(4, (int) v.get().value("age"));
    return map;
  }).order(Scope.local).by(Column.values, Order.desc).by(Column.keys, Order.asc);
}

代码示例来源：origin: JanusGraph/janusgraph

@Override
public void execute(Vertex vertex, Messenger<Double> messenger, Memory memory) {
  if (memory.isInitialIteration()) {
    messenger.sendMessage(inE, 1D);
  } else if (1 == memory.getIteration()) {
    double initialPageRank = 1D / vertexCount;
    double edgeCount = IteratorUtils.stream(messenger.receiveMessages()).reduce(0D, (a, b) -> a + b);
    vertex.property(VertexProperty.Cardinality.single, PAGE_RANK, initialPageRank);
    vertex.property(VertexProperty.Cardinality.single, OUTGOING_EDGE_COUNT, edgeCount);
    messenger.sendMessage(outE, initialPageRank / edgeCount);
  } else {
    double newPageRank = IteratorUtils.stream(messenger.receiveMessages()).reduce(0D, (a, b) -> a + b);
    newPageRank =  (dampingFactor * newPageRank) + ((1D - dampingFactor) / vertexCount);
    vertex.property(VertexProperty.Cardinality.single, PAGE_RANK, newPageRank);
    messenger.sendMessage(outE, newPageRank / vertex.<Double>value(OUTGOING_EDGE_COUNT));
  }
}

代码示例来源：origin: apache/tinkerpop

@Test
@LoadGraphWith(MODERN)
public void g_VX4X_out_asXhereX_hasXlang_javaX_selectXhereX() {
  final Traversal<Vertex, Vertex> traversal = get_g_VX4X_out_asXhereX_hasXlang_javaX_selectXhereX(convertToVertexId("josh"));
  printTraversalForm(traversal);
  int counter = 0;
  while (traversal.hasNext()) {
    counter++;
    final Vertex vertex = traversal.next();
    assertEquals("java", vertex.<String>value("lang"));
    assertTrue(vertex.value("name").equals("ripple") || vertex.value("name").equals("lop"));
  }
  assertEquals(2, counter);
}

代码示例来源：origin: hugegraph/hugegraph

@Test
public void testQueryVertexBeforeAfterUpdatePropertyWithSecondaryIndex() {
  HugeGraph graph = graph();
  initPersonIndex(true);
  Vertex vertex = graph.addVertex(T.label, "person", "name", "Baby",
                  "city", "Hongkong", "age", 3);
  graph.tx().commit();
  List<Vertex> vl = graph.traversal().V().has("city", "Hongkong").toList();
  Assert.assertEquals(1, vl.size());
  Assert.assertEquals("Baby", vl.get(0).value("name"));
  vl = graph.traversal().V().has("city", "Shanghai").toList();
  Assert.assertEquals(0, vl.size());
  vertex.property("city", "Shanghai");
  graph.tx().commit();
  vl = graph.traversal().V().has("city", "Hongkong").toList();
  Assert.assertEquals(0, vl.size());
  vl = graph.traversal().V().has("city", "Shanghai").toList();
  Assert.assertEquals(1, vl.size());
  Assert.assertEquals("Baby", vl.get(0).value("name"));
}

代码示例来源：origin: apache/tinkerpop

@Test
@FeatureRequirementSet(FeatureRequirementSet.Package.VERTICES_ONLY)
@FeatureRequirement(featureClass = Graph.Features.GraphFeatures.class, feature = Graph.Features.GraphFeatures.FEATURE_TRANSACTIONS)
public void shouldAllowReferenceOfVertexOutsideOfOriginalTransactionalContextAuto() {
  final Vertex v1 = graph.addVertex("name", "stephen");
  g.tx().commit();
  assertEquals("stephen", v1.value("name"));
  g.tx().rollback();
  assertEquals("stephen", v1.value("name"));
}

代码示例来源：origin: apache/tinkerpop

@Override
public Traversal<Vertex, String> get_g_VX1X_mapXnameX(final Object v1Id) {
  return g.V(v1Id).<String>map(v -> v.get().value("name"));
}

代码示例来源：origin: apache/tinkerpop

@Override
public void execute(final Vertex vertex, final Messenger messenger, final Memory memory) {
  vertex.property("money", vertex.<String>value("name").length());
}

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