本文整理了Java中xdi2.core.Graph.getRootContextNode()方法的一些代码示例，展示了Graph.getRootContextNode()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.getRootContextNode()方法的具体详情如下：
包路径：xdi2.core.Graph
类名称：Graph
方法名：getRootContextNode

Graph.getRootContextNode介绍

[英]Gets the local root context node of this graph.
[中]获取此图的本地根上下文节点。

代码示例

代码示例来源：origin: projectdanube/xdi2

/**
 * Returns the normalized serialization string of a graph, to be used
 * e.g. for signatures and encryptions.
 */
public static String serialize(Graph graph, CopyStrategy copyStrategy) {
  return serialize(graph.getRootContextNode(), copyStrategy);
}

代码示例来源：origin: projectdanube/xdi2

/**
 * Given a graph, finds and returns the XDI common root.
 * @param graph The graph.
 * @return The XDI common root.
 */
public static XdiCommonRoot findCommonRoot(Graph graph) {
  ContextNode commonRootContextNode = graph.getRootContextNode(false);
  return new XdiCommonRoot(commonRootContextNode);
}

代码示例来源：origin: projectdanube/xdi2

@Override
/*
 * TODO: This is inefficient for a large number of context nodes in the graph.
 */
public ReadOnlyIterator<Relation> getIncomingRelations() {
  return new SelectingIterator<Relation> (this.getGraph().getRootContextNode(true).getAllRelations()) {
    @Override
    public boolean select(Relation relation) {
      return relation.follow().equals(AbstractContextNode.this);
    }
  };
}

代码示例来源：origin: projectdanube/xdi2

/**
 * Given a graph, lists all link contract templates.
 * @param graph The graph.
 * @return An iterator over link contract templates.
 */
public static ReadOnlyIterator<LinkContractTemplate> getAllLinkContractTemplates(Graph graph) {
  ContextNode root = graph.getRootContextNode(true);
  Iterator<ContextNode> allContextNodes = root.getAllContextNodes();
  return new MappingContextNodeLinkContractTemplateIterator(allContextNodes);
}

代码示例来源：origin: projectdanube/xdi2

public static XdiEntityCollection getEntityIndex(Graph graph, XDIArc indexXDIArc, boolean create) {
  XDIArc xdiEntityCollectionXDIArc = XdiEntityCollection.createXDIArc(indexXDIArc);
  ContextNode contextNode = create ? graph.getRootContextNode().setContextNode(xdiEntityCollectionXDIArc) : graph.getRootContextNode().getContextNode(xdiEntityCollectionXDIArc);
  if (contextNode == null) return null;
  return XdiEntityCollection.fromContextNode(contextNode);
}

代码示例来源：origin: projectdanube/xdi2

public static XdiAttributeCollection getAttributeIndex(Graph graph, XDIArc indexXDIArc, boolean create) {
  XDIArc xdiAttributeCollectionXDIArc = XdiAttributeCollection.createXDIArc(indexXDIArc);
  ContextNode contextNode = create ? graph.getRootContextNode().getContextNode(xdiAttributeCollectionXDIArc) : graph.getRootContextNode().getContextNode(xdiAttributeCollectionXDIArc);
  if (contextNode == null) return null;
  return XdiAttributeCollection.fromContextNode(contextNode);
}

代码示例来源：origin: projectdanube/xdi2

/**
 * Creates a clone of the given graph with the same contents.
 * @param graph The graph to clone.
 * @return The cloned graph.
 */
public static Graph cloneGraph(Graph graph) {
  Graph newGraph = graphFactory.openGraph();
  CopyUtil.copyContextNode(graph.getRootContextNode(true), newGraph, null);
  return newGraph;
}

代码示例来源：origin: projectdanube/xdi2

@Override
public XdiCommonRoot findCommonRoot() {
  return new XdiCommonRoot(this.getContextNode().getGraph().getRootContextNode(false));
}

代码示例来源：origin: projectdanube/xdi2

@Override
public Writer write(Graph graph, Writer writer) throws IOException {
  // write the statements
  JsonObject json = makeJson(graph.getRootContextNode(true), this.isWriteImplied());
  JsonWriter jsonWriter = new JsonWriter(writer);
  if (this.isWritePretty()) jsonWriter.setIndent("  ");
  gson.toJson(json, jsonWriter);
  jsonWriter.flush();
  jsonWriter.close();
  writer.flush();
  return writer;
}

代码示例来源：origin: projectdanube/xdi2

private void read(Graph graph, BufferedReader bufferedReader, State state) throws IOException, Xdi2ParseException {
  JsonElement jsonGraphElement = gson.getAdapter(JsonObject.class).fromJson(bufferedReader);
  if (! (jsonGraphElement instanceof JsonObject)) throw new Xdi2ParseException("JSON must be an object: " + jsonGraphElement);
  this.read(graph.getRootContextNode(), (JsonObject) jsonGraphElement, state);
}

代码示例来源：origin: projectdanube/xdi2

/**
 * Given a graph, lists all digests.
 * @param graph The graph.
 * @return An iterator over digests.
 */
public static Iterator<Digest> getAllDigests(Graph graph) {
  ContextNode root = graph.getRootContextNode(true);
  Iterator<ContextNode> allContextNodes = root.getAllContextNodes();
  return new MappingXdiAttributeDigestIterator(new MappingContextNodeXdiAttributeIterator(allContextNodes));
}

代码示例来源：origin: projectdanube/xdi2

/**
 * Given a graph, lists all signatures.
 * @param graph The graph.
 * @return An iterator over signatures.
 */
public static Iterator<Signature> getAllSignatures(Graph graph) {
  ContextNode root = graph.getRootContextNode(true);
  Iterator<ContextNode> allContextNodes = root.getAllContextNodes();
  return new MappingXdiAttributeSignatureIterator(new MappingContextNodeXdiAttributeIterator(allContextNodes));
}

代码示例来源：origin: projectdanube/xdi2

private static void assertEqualsGraphs(Graph graph1, Graph graph2) throws Exception {
  assertEquals(graph1.getRootContextNode().getAllStatementCount(), graph2.getRootContextNode().getAllStatementCount());
  assertEquals(graph1.getRootContextNode().getAllContextNodeCount(), graph2.getRootContextNode().getAllContextNodeCount());
  assertEquals(graph1.getRootContextNode().getAllRelationCount(), graph2.getRootContextNode().getAllRelationCount());
  assertEquals(graph1.getRootContextNode().getAllLiteralCount(), graph2.getRootContextNode().getAllLiteralCount());
  Iterator<Statement> s1 = graph1.getRootContextNode().getAllStatements();
  Iterator<Statement> s2 = graph2.getRootContextNode().getAllStatements();
  while (s1.hasNext()) { XDIStatement s = s1.next().getXDIStatement(); assertTrue(s.toString(), graph2.containsStatement(s)); }
  while (s2.hasNext()) { XDIStatement s = s2.next().getXDIStatement(); assertTrue(s.toString(), graph1.containsStatement(s)); }
  assertEquals(graph1, graph2);
}

代码示例来源：origin: projectdanube/xdi2

public void testReadJson() throws Exception {
  Graph graph3 = this.getGraphFactory().openGraph(this.getClass().getName() + "-graph-3");
  XDIReader reader = XDIReaderRegistry.forFormat("XDI/JSON", null);
  reader.read(graph3, AbstractGraphTest.class.getResourceAsStream("test.json")).close();
  testGraph(graph3);
  graph3.getRootContextNode().clear();
  assertTrue(graph3.isEmpty());
  graph3.close();
}

代码示例来源：origin: projectdanube/xdi2

public void testDeleteCyclicRelation() throws Exception {
  Graph graph31 = this.getGraphFactory().openGraph(this.getClass().getName() + "-graph-31");
  graph31.setStatement(XDIStatement.create("=a=b=c=d=e/+x/=a=b=c"));
  graph31.setStatement(XDIStatement.create("=m=n=o/+y/=a=b=c=d"));
  graph31.getDeepContextNode(XDIAddress.create("=a=b")).delete();
  assertEquals(graph31.getRootContextNode().getAllContextNodeCount(), 4);
  assertEquals(graph31.getRootContextNode().getAllRelationCount(), 0);
  assertEquals(graph31.getRootContextNode().getAllStatementCount(), 4);
  graph31.close();
}

代码示例来源：origin: projectdanube/xdi2

public void testTimestampsOnContextNode() throws Exception {

    Graph graph = MemoryGraphFactory.getInstance().openGraph();
    ContextNode contextNode = graph.getRootContextNode().setContextNode(XDIArc.create("=markus"));

    GregorianCalendar calendar = new GregorianCalendar(2010, 11, 22, 11, 22, 33);
    calendar.setTimeZone(TimeZone.getTimeZone("UTC"));
    Date timestamp = calendar.getTime();

    Timestamps.setTimestamp(XdiAbstractContext.fromContextNode(contextNode), timestamp);
    assertEquals(timestamp, Timestamps.getTimestamp(XdiAbstractContext.fromContextNode(contextNode)));

    graph.close();
  }
}

代码示例来源：origin: projectdanube/xdi2

private static void testGraphsEqual(Graph graph1, Graph graph2) throws Exception {

    ContextNode rootContextNode1 = graph1.getRootContextNode();
    ContextNode rootContextNode2 = graph2.getRootContextNode();

    assertTrue(rootContextNode1.getContextNodeCount() == rootContextNode2.getContextNodeCount());
    assertTrue(rootContextNode1.getAllContextNodeCount() == rootContextNode2.getAllContextNodeCount());
    assertTrue(rootContextNode1.getAllRelationCount() == rootContextNode2.getAllRelationCount());
    assertTrue(rootContextNode1.getAllLiteralCount() == rootContextNode2.getAllLiteralCount());
  }
}

代码示例来源：origin: projectdanube/xdi2

public void testDeleteDeep() throws Exception {
  Graph graph12 = this.getGraphFactory().openGraph(this.getClass().getName() + "-graph-12");
  assertEquals(graph12.getRootContextNode(), graph12.getDeepContextNode(XDIConstants.XDI_ADD_ROOT));
  assertEquals(graph12.getRootContextNode().getXDIAddress(), XDIConstants.XDI_ADD_ROOT);
  graph12.setDeepContextNode(XDIAddress.create("=markus")).setRelation(XDIAddress.create("#friend"), XDIAddress.create("=someone"));
  graph12.getDeepContextNode(XDIAddress.create("=markus")).delete();
  graph12.setDeepContextNode(XDIAddress.create("=markus"));
  assertNull(graph12.getDeepContextNode(XDIAddress.create("=markus")).getRelation(XDIAddress.create("#friend")));
  graph12.close();
}

代码示例来源：origin: projectdanube/xdi2

public void testCommonRoot() throws Exception {

    Graph graph = MemoryGraphFactory.getInstance().openGraph();

    assertEquals(XdiCommonRoot.findCommonRoot(graph).getContextNode(), graph.getRootContextNode());
    assertEquals(XdiCommonRoot.findCommonRoot(graph).getContextNode().getXDIAddress(), XDIConstants.XDI_ADD_ROOT);

    graph.close();
  }
}

代码示例来源：origin: projectdanube/xdi2

public void testNoExceptions() throws Exception {
  Graph graph17 = this.getGraphFactory().openGraph(this.getClass().getName() + "-graph-17");
  graph17.setStatement(XDIStatement.create("=markus<#email>/&/\"Markus Sabadello\""));
  graph17.setStatement(XDIStatement.create("=markus/#friend/=neustar=les"));
  ContextNode root = graph17.getRootContextNode();
  ContextNode markus = graph17.getDeepContextNode(XDIAddress.create("=markus"));
  ContextNode les = graph17.getDeepContextNode(XDIAddress.create("=neustar=les"));
  root.setContextNode(XDIArc.create("=markus"));
  markus.setDeepContextNode(XDIAddress.create("<#email>")).setLiteralNode("test");
  markus.setRelation(XDIAddress.create("#friend"), les);
  graph17.close();
}