本文整理了Java中xdi2.core.Graph类的一些代码示例，展示了Graph类的具体用法。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类的具体详情如下：
包路径：xdi2.core.Graph
类名称：Graph

Graph介绍

[英]This interface represents a whole XDI graph. XDI graphs consist of context nodes, relations, and literals. Also, an XDI graph can be expressed as a set of XDI statements.
[中]此接口表示整个XDI图。XDI图由上下文节点、关系和文字组成。此外，XDI图可以表示为一组XDI语句。

代码示例

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

/**
 * Factory method that finds or creates an XDI relationship link contract for a graph.
 * @return The XDI relationship link contract.
 */
public static RelationshipLinkContract findRelationshipLinkContract(Graph graph, XDIAddress authorizingAuthority, XDIAddress requestingAuthority, XDIAddress templateAuthorityAndId, XDIArc instanceXDIArc, boolean create) {
  XDIAddress relationshipLinkContractXDIAddress = createRelationshipLinkContractXDIAddress(authorizingAuthority, requestingAuthority, templateAuthorityAndId, instanceXDIArc);
  ContextNode relationshipLinkContractContextNode = create ? graph.setDeepContextNode(relationshipLinkContractXDIAddress) : graph.getDeepContextNode(relationshipLinkContractXDIAddress, true);
  if (relationshipLinkContractContextNode == null) return null;
  return new RelationshipLinkContract(XdiAbstractEntity.fromContextNode(relationshipLinkContractContextNode));
}

代码示例来源：origin: projectdanube/xdi2

private synchronized void read(Graph graph, String string) throws Xdi2ParseException {
  for (XDIReader xdiReader : readers) {
    if (xdiReader instanceof AutoReader) continue;
    try {
      graph.clear();
      xdiReader.read(graph, new StringReader(string));
      this.lastSuccessfulReader = xdiReader;
      return;
    } catch(Exception ex) {
      continue;
    }
  }
  this.lastSuccessfulReader = null;
  throw new Xdi2ParseException("Unknown serialization format.");
}

代码示例来源：origin: projectdanube/xdi2

/**
 * Factory method that finds or creates an XDI link contract template for a graph.
 * @return The XDI link contract template.
 */
public static LinkContractTemplate findLinkContractTemplate(Graph graph, XDIAddress templateAuthorityAndId, boolean create) {
  XDIAddress linkContractTemplateXDIAddress = createLinkContractTemplateXDIAddress(templateAuthorityAndId);
  ContextNode linkContractTemplateContextNode = create ? (ContextNode) graph.setDeepNode(linkContractTemplateXDIAddress) : (ContextNode) graph.getDeepNode(linkContractTemplateXDIAddress, true);
  if (linkContractTemplateContextNode == null) return null;
  return new LinkContractTemplate(XdiEntitySingleton.Variable.fromContextNode(linkContractTemplateContextNode));
}

代码示例来源：origin: projectdanube/xdi2

/**
 * Copies a context node into a target graph.
 * @param contextNode A context node from any graph.
 * @param targetGraph The target graph.
 * @param copyStrategy The strategy to determine what to copy.
 * @return The copied context node in the target graph.
 */
public static ContextNode copyContextNode(ContextNode contextNode, Graph targetGraph, CopyStrategy copyStrategy) {
  if (contextNode == null) throw new NullPointerException();
  if (targetGraph == null) throw new NullPointerException();
  if (copyStrategy == null) copyStrategy = DEFAULT_COPY_STRATEGY;
  ContextNode targetContextNode;
  XDIAddress contextNodeXDIAddress = contextNode.getXDIAddress();
  if (contextNode.isRootContextNode()) {
    targetContextNode = targetGraph.getRootContextNode(false);
    copyContextNodeContents(contextNode, targetContextNode, copyStrategy);
  } else {
    targetContextNode = targetGraph.setDeepContextNode(contextNodeXDIAddress);
    copyContextNodeContents(contextNode, targetContextNode, copyStrategy);
  }
  return targetContextNode;
}

代码示例来源：origin: projectdanube/xdi2

graph18.setStatement(XDIStatement.create("=markus<#email>/&/\"Markus Sabadello\""));
graph18.setStatement(XDIStatement.create("=markus/#friend/=neustar=les"));
ContextNode markus = graph18.getDeepContextNode(XDIAddress.create("=markus"));
ContextNode attribute = markus.getDeepContextNode(XDIAddress.create("<#email>"));
graph18.beginTransaction();
assertTrue(markus.containsRelation(XDIAddress.create("$is#"), XDIAddress.create("#person")));
graph18.rollbackTransaction();
if (graph18.supportsTransactions()) {
graph18.beginTransaction();
graph18.clear();
graph18.rollbackTransaction();
assertTrue(graph18.supportsTransactions() ? ! graph18.isEmpty() : graph18.isEmpty());
graph18.beginTransaction();
graph18.clear();
graph18.commitTransaction();
assertTrue(graph18.isEmpty());
graph18.close();

代码示例来源：origin: projectdanube/xdi2

List<Relation> refRepRelations = new IteratorListMaker<Relation> (Equivalence.getAllReferenceAndReplacementRelations(operationResultGraph.getRootContextNode(true))).list();
  ContextNode refRepTargetContextNode = operationResultGraph.getDeepContextNode(targetXDIAddress, true);
  if (refRepTargetContextNode != null && ! operationResultGraph.isEmpty()) {
    ContextNode tempContextNode = tempGraph.setDeepContextNode(refRepContextNode.getXDIAddress());
    CopyUtil.copyContextNodeContents(refRepTargetContextNode, tempContextNode, null);
    tempGraph.close();
  } else {
  if (operationResultGraph.containsStatement(refRepRelation.getStatement().getXDIStatement())) {

代码示例来源：origin: projectdanube/xdi2

ContextNode innerRootContextNode = graph30.getRootContextNode().setContextNode(XDIArc.create("(=a=b=c/+d)"));
assertNotNull(graph30.getRootContextNode().getDeepContextNode(XDIAddress.create("(=a=b=c/+d)")));
assertNotNull(graph30.getRootContextNode().getDeepContextNode(XDIAddress.create("=a=b=c")));
assertNotNull(graph30.getRootContextNode().getDeepContextNode(XDIAddress.create("=a=b=c")).getRelation(XDIAddress.create("+d")));
assertEquals(graph30.getRootContextNode().getDeepContextNode(XDIAddress.create("=a=b=c")).getRelation(XDIAddress.create("+d")).follow(), innerRootContextNode);
assertEquals(graph30.getRootContextNode().getAllContextNodeCount(), 4);
assertEquals(graph30.getRootContextNode().getAllRelationCount(), 1);
assertEquals(graph30.getRootContextNode().getAllStatementCount(), 5);
graph30.getRootContextNode().getContextNode(XDIArc.create("=a")).delContextNode(XDIArc.create("=b"));
assertNull(graph30.getRootContextNode().getDeepContextNode(XDIAddress.create("(=a=b=c/+d)")));
assertNull(graph30.getRootContextNode().getDeepContextNode(XDIAddress.create("=a=b=c")));
assertEquals(graph30.getRootContextNode().getAllContextNodeCount(), 1);
assertEquals(graph30.getRootContextNode().getAllRelationCount(), 0);
assertEquals(graph30.getRootContextNode().getAllStatementCount(), 1);
graph30.getRootContextNode().setContextNode(XDIArc.create("(=a=b=c/+d)"));
graph30.clear();
assertNull(graph30.getRootContextNode().getDeepContextNode(XDIAddress.create("(=a=b=c/+d)")));
assertNull(graph30.getRootContextNode().getDeepContextNode(XDIAddress.create("=a=b=c")));
assertEquals(graph30.getRootContextNode().getAllContextNodeCount(), 0);
assertEquals(graph30.getRootContextNode().getAllRelationCount(), 0);
assertEquals(graph30.getRootContextNode().getAllStatementCount(), 0);
assertNotNull(graph30.getRootContextNode().getDeepContextNode(XDIAddress.create("(=a=b=c/+d)")));

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 testNormalizedSerialization() throws Exception {

    Graph graph = MemoryGraphFactory.getInstance().openGraph();
    graph.setStatement(XDIStatement.create("=markus<#email>/&/\"markus@projectdanube.org\""));
    graph.setStatement(XDIStatement.create("=markus/#friend/=animesh"));

    ContextNode contextNode = graph.getDeepContextNode(XDIAddress.create("=markus"));

    String normalizedSerialization = "{\"/\":[\"=animesh\",\"=markus\"],\"=markus/\":[\"<#email>\"],\"=markus/#friend\":[\"=animesh\"],\"=markus<#email>/&\":\"markus@projectdanube.org\"}";

    assertEquals(Normalization.serialize(contextNode, null), normalizedSerialization);

    graph.close();
  }
}

代码示例来源：origin: projectdanube/xdi2

public void testDelRelationDelInnerRoot() throws Exception {
  Graph graph33 = this.getGraphFactory().openGraph(this.getClass().getName() + "-graph-33");
  graph33.getRootContextNode().setContextNode(XDIArc.create("(=a/#b)"));
  assertEquals(graph33.getAllStatementCount(), 3);
  graph33.getRootContextNode().getContextNode(XDIArc.create("=a")).delRelations(XDIAddress.create("#b"));
  assertEquals(graph33.getAllStatementCount(), 1);
  assertFalse(graph33.containsStatement(XDIStatement.create("//(=a/#b)")));
  assertTrue(graph33.containsStatement(XDIStatement.create("//=a")));
  assertFalse(graph33.containsStatement(XDIStatement.create("=a/#b/(=a/#b)")));
  graph33.clear();
  graph33.getRootContextNode().setContextNode(XDIArc.create("(/#b)"));
  assertEquals(graph33.getAllStatementCount(), 2);
  graph33.getRootContextNode().delRelations(XDIAddress.create("#b"));
  assertEquals(graph33.getAllStatementCount(), 0);
  assertFalse(graph33.containsStatement(XDIStatement.create("//(/#b)")));
  assertFalse(graph33.containsStatement(XDIStatement.create("/#b/(/#b)")));
  graph33.clear();
  graph33.close();
}

代码示例来源：origin: projectdanube/xdi2

public void testLinkContracts() throws Exception {
  Graph graph = MemoryGraphFactory.getInstance().openGraph();
  ContextNode contextNode1 = graph.setDeepContextNode(XDIAddress.create("(=alice/$public)$contract"));
  ContextNode contextNode2 = graph.setDeepContextNode(XDIAddress.create("(=alice/=alice)$contract"));
  assertTrue(LinkContract.isValid(XdiAbstractEntity.fromContextNode(contextNode1)));
  assertTrue(LinkContract.isValid(XdiAbstractEntity.fromContextNode(contextNode2)));
  LinkContract linkContract1 = LinkContract.fromXdiEntity(XdiAbstractEntity.fromContextNode(contextNode1));
  LinkContract linkContract2 = LinkContract.fromXdiEntity(XdiAbstractEntity.fromContextNode(contextNode2));
  assertTrue(new IteratorContains<LinkContract> (LinkContracts.getAllLinkContracts(graph), linkContract1).contains());
  assertTrue(new IteratorContains<LinkContract> (LinkContracts.getAllLinkContracts(graph), linkContract2).contains());
  graph.close();
}

代码示例来源：origin: projectdanube/xdi2

ContextNodeStatement statement22_1 = (ContextNodeStatement) graph22.setStatement(XDIStatement.create("=neustar//=les"));
RelationStatement statement22_2 = (RelationStatement) graph22.setStatement(XDIStatement.create("=markus/#friend/=neustar=les"));
LiteralStatement statement22_3 = (LiteralStatement) graph22.setStatement(XDIStatement.create("=markus<#email>/&/\"markus@projectdanube.org\""));
assertNotNull(graph22.getDeepContextNode(XDIAddress.create("=markus")));
assertNotNull(graph22.getDeepContextNode(XDIAddress.create("=neustar")));
assertNotNull(graph22.getDeepContextNode(XDIAddress.create("=neustar=les")));
assertNotNull(graph22.getDeepContextNode(XDIAddress.create("=markus")).getRelation(XDIAddress.create("#friend")));
assertNotNull(graph22.getDeepContextNode(XDIAddress.create("=markus")).getRelation(XDIAddress.create("#friend"), XDIAddress.create("=neustar=les")));
assertNotNull(graph22.getDeepContextNode(XDIAddress.create("=markus<#email>")).getLiteralNode());
assertNotNull(graph22.getDeepContextNode(XDIAddress.create("=markus<#email>")).getLiteralNode("markus@projectdanube.org"));
assertTrue(graph22.containsStatement(XDIStatement.create("=neustar//=les")));
assertTrue(graph22.containsStatement(XDIStatement.create("=markus/#friend/=neustar=les")));
assertTrue(graph22.containsStatement(XDIStatement.create("=markus<#email>/&/\"markus@projectdanube.org\"")));
assertEquals(graph22.getStatement(XDIStatement.create("=neustar//=les")).getXDIStatement(), XDIStatement.create("=neustar//=les"));
assertEquals(graph22.getStatement(XDIStatement.create("=markus/#friend/=neustar=les")).getXDIStatement(), "=markus/#friend/=neustar=les");
assertEquals(graph22.getStatement(XDIStatement.create("=markus<#email>/&/\"markus@projectdanube.org\"")).getXDIStatement(), "=markus<#email>/&/\"markus@projectdanube.org\"");
assertTrue(graph22.getStatement(XDIStatement.create("=neustar//=les")) instanceof ContextNodeStatement);
assertTrue(graph22.getStatement(XDIStatement.create("=markus/#friend/=neustar=les")) instanceof RelationStatement);
assertTrue(graph22.getStatement(XDIStatement.create("=markus<#email>/&/\"markus@projectdanube.org\"")) instanceof LiteralStatement);
assertTrue(graph22.getStatement(XDIStatement.create("=neustar//=les")).getXDIStatement().isContextNodeStatement());
assertTrue(graph22.getStatement(XDIStatement.create("=markus/#friend/=neustar=les")).getXDIStatement().isRelationStatement());
assertTrue(graph22.getStatement(XDIStatement.create("=markus<#email>/&/\"markus@projectdanube.org\"")).getXDIStatement().isLiteralStatement());
assertNotNull(graph23.getDeepContextNode(XDIAddress.create("=markus")));
assertNotNull(graph23.getDeepContextNode(XDIAddress.create("=neustar")));
assertNotNull(graph23.getDeepContextNode(XDIAddress.create("=neustar=les")));

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
public void executeDelOnAddress(XDIAddress targetXDIAddress, DelOperation operation, Graph operationResultGraph, ExecutionContext executionContext) throws Xdi2MessagingException {
  if (XDIConstants.XDI_ADD_ROOT.equals(targetXDIAddress)) {
    this.getGraph().clear();
  } else if (targetXDIAddress.getNumXDIArcs() == 1) {
    this.getGraph().getRootContextNode(false).delContextNode(targetXDIAddress.getFirstXDIArc());
  } else {
    XDIAddress parentContextNodeXDIAddress = XDIAddressUtil.parentXDIAddress(targetXDIAddress, -1);
    XDIArc XDIarc = targetXDIAddress.getLastXDIArc();
    ContextNode parentContextNode = this.getGraph().getDeepContextNode(parentContextNodeXDIAddress, false);
    if (parentContextNode == null) return;
    if (XDIConstants.XDI_ARC_LITERAL.equals(XDIarc)) {
      parentContextNode.delLiteralNode();
    } else {
      parentContextNode.delContextNode(XDIarc);
    }
  }
}

代码示例来源：origin: projectdanube/xdi2

@Override
public ContextNode getContextNode(XDIAddress nodeXDIAddress) {
  Graph resolvedGraph = this.resolveGraph(nodeXDIAddress);
  XDIAddress resolvedcontextNodeXDIAddress = this.resolveXDIAddress(nodeXDIAddress);
  ContextNode resolvedContextNode = resolvedGraph.getDeepContextNode(resolvedcontextNodeXDIAddress, false);
  if (log.isTraceEnabled()) log.trace("getContextNode(" + nodeXDIAddress + ") --> " + resolvedcontextNodeXDIAddress + " --> " + resolvedContextNode);
  return resolvedContextNode;
}

代码示例来源：origin: projectdanube/xdi2

assertEquals(graph10.compareTo(graph11), 0);
  assertEquals(graph11.compareTo(graph10), 0);
  XDIWriterRegistry.forFormat("XDI/JSON", null).write(graph10, buffer1);
  XDIWriterRegistry.forFormat("XDI DISPLAY", null).write(graph11, buffer2);
  graph10.clear();
  graph11.clear();
  XDIReaderRegistry.forFormat("XDI/JSON", null).read(graph10, new StringReader(buffer1.toString()));
  XDIReaderRegistry.forFormat("XDI DISPLAY", null).read(graph11, new StringReader(buffer2.toString()));
  assertEquals(graph10.compareTo(graph11), 0);
  assertEquals(graph11.compareTo(graph10), 0);
  graph11.getRootContextNode().setContextNode(XDIArc.create("=xxx"));
  assertNotEquals(graph10.compareTo(graph11), 0);
} finally {
  graph10.close();
  graph11.close();

代码示例来源：origin: projectdanube/xdi2

@Override
public void shutdown() throws Exception {
  super.shutdown();
  this.graph.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

@Test
  public void testDuplicateDatatypes() throws Exception {

    StringBuilder buffer = new StringBuilder();

    buffer.append("=markus<#age>/&/\"33\"\n");
    buffer.append("=markus<#age>/$is#/+$xsd$int\n");
    buffer.append("=markus<#age>/$is#/+$json$number\n");
    String xdiString = buffer.toString();

    try {

      Graph graph = (new MemoryGraphFactory()).parseGraph(xdiString);
      DataTypes.setDataType(graph.getDeepContextNode(XDIAddress.create("=markus<#age>")), XDIAddress.create("+$json$number"));

      fail();
      
      graph.close();
    } catch (Exception ex) { }
  }
}