本文整理了Java中com.yahoo.text.XML.getChild()方法的一些代码示例，展示了XML.getChild()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。XML.getChild()方法的具体详情如下：
包路径：com.yahoo.text.XML
类名称：XML
方法名：getChild

XML.getChild介绍

[英]Returns the first child with the given name, or null if none
[中]返回具有给定名称的第一个子项，如果没有，则返回null

代码示例

代码示例来源：origin: com.yahoo.vespa/config-model

private List<Node> readNodes(Element providerElement) {
  Element nodesSpec = XML.getChild(providerElement, "nodes");
  if (nodesSpec == null) {
    return null;
  }
  List<Node> nodes = new ArrayList<>();
  for (Element nodeSpec : XML.getChildren(nodesSpec, "node")) {
    nodes.add(readNode(nodeSpec));
  }
  return nodes;
}

代码示例来源：origin: com.yahoo.vespa/config-model

private static String getCleanValue(Element spec, String name) {
  Element elem = XML.getChild(spec, name);
  if (elem == null) {
    return null;
  }
  String value = elem.getFirstChild().getNodeValue();
  if (value == null) {
    return null;
  }
  value = value.trim();
  return value.isEmpty() ? null : value;
}

代码示例来源：origin: com.yahoo.vespa/config-model

private Map<String, String> getServletConfig(Element servletElement) {
    Map<String, String> servletConfig = new HashMap<>();

    Element servletConfigElement = XML.getChild(servletElement, "servlet-config");
    XML.getChildren(servletConfigElement).forEach( parameter ->
        servletConfig.put(parameter.getTagName(), XML.getValue(parameter))
    );

    return servletConfig;
  }
}

代码示例来源：origin: com.yahoo.vespa/config-model

public static Optional<String> getOptionalChildValue(Element parent, String childName) {
    Element child = XML.getChild(parent, childName);
    if (child == null) return Optional.empty();
    if (child.getFirstChild() == null) return Optional.empty();
    return Optional.ofNullable(child.getFirstChild().getNodeValue());
  }
}

代码示例来源：origin: com.yahoo.vespa/config-model

private void addSecretStore(ContainerCluster cluster, Element spec) {
  Element secretStoreElement = XML.getChild(spec, "secret-store");
  if (secretStoreElement != null) {
    SecretStore secretStore = new SecretStore();
    for (Element group : XML.getChildren(secretStoreElement, "group")) {
      secretStore.addGroup(group.getAttribute("name"), group.getAttribute("environment"));
    }
    cluster.setSecretStore(secretStore);
  }
}

代码示例来源：origin: com.yahoo.vespa/config-model

/**
 * If not found, return null.
 */
public ModelElement getChild(String name) {
  Element e = XML.getChild(xml, name);
  if (e != null) {
    return new ModelElement(e);
  }
  return null;
}

代码示例来源：origin: com.yahoo.vespa/config-model-api

private DeploymentSpec.UpgradePolicy readUpgradePolicy(Element root) {
  Element upgradeElement = XML.getChild(root, "upgrade");
  if (upgradeElement == null) return DeploymentSpec.UpgradePolicy.defaultPolicy;
  String policy = upgradeElement.getAttribute("policy");
  switch (policy) {
    case "canary" : return DeploymentSpec.UpgradePolicy.canary;
    case "default" : return DeploymentSpec.UpgradePolicy.defaultPolicy;
    case "conservative" : return DeploymentSpec.UpgradePolicy.conservative;
    default : throw new IllegalArgumentException("Illegal upgrade policy '" + policy + "': " +
                           "Must be one of " + Arrays.toString(DeploymentSpec.UpgradePolicy.values()));
  }
}

代码示例来源：origin: com.yahoo.vespa/config-model

private String getPath(Element servletElement) {
  Element pathElement = XML.getChild(servletElement, "path");
  return XML.getValue(pathElement);
}

代码示例来源：origin: com.yahoo.vespa/config-model

private Set<ComponentSpecification> read(Element spec, String attributeName, String elementName) {
  Set<ComponentSpecification> componentSpecifications = new LinkedHashSet<>();
  componentSpecifications.addAll(spaceSeparatedComponentSpecificationsFromAttribute(spec, attributeName));
  // TODO: the 'inherits' element is undocumented, and can be removed in an upcoming version of Vespa
  componentSpecifications.addAll(idRefFromElements(XML.getChild(spec, "inherits"), elementName));
  return componentSpecifications;
}

代码示例来源：origin: com.yahoo.vespa/config-model

private Optional<Component> buildTargetSelector(DeployState deployState, AbstractConfigProducer ancestor, Element searcherElement, ComponentId namespace) {
    Element targetSelectorElement = XML.getChild(searcherElement, "target-selector");
    if (targetSelectorElement == null)
      return Optional.empty();

    return Optional.of(new DomComponentBuilder(namespace).build(deployState, ancestor, targetSelectorElement));
  }
}

代码示例来源：origin: com.yahoo.vespa/config-model

private static void addFilterConfig(Element filterElement, Filter filter) {
  Element filterConfigElement = XML.getChild(filterElement, "filter-config");
  if (filterConfigElement == null)
    return;
  FilterConfigProvider filterConfigProvider = filter.addAndInjectConfigProvider();
  putFilterConfig(filterConfigElement, filterConfigProvider);
}

代码示例来源：origin: com.yahoo.vespa/config-model

private void addHttp(DeployState deployState, Element spec, ContainerCluster cluster) {
  Element httpElement = XML.getChild(spec, "http");
  if (httpElement != null) {
    cluster.setHttp(buildHttp(deployState, cluster, httpElement));
  }
}

代码示例来源：origin: com.yahoo.vespa/config-model

private ContainerDocumentApi buildDocumentApi(ContainerCluster cluster, Element spec) {
  Element documentApiElement = XML.getChild(spec, "document-api");
  if (documentApiElement == null) return null;
  ContainerDocumentApi.Options documentApiOptions = DocumentApiOptionsBuilder.build(documentApiElement);
  return new ContainerDocumentApi(cluster, documentApiOptions);
}

代码示例来源：origin: com.yahoo.vespa/config-model

protected static FederationOptions readFederationOptions(Element sourceElement) {
    Element optionsElement = XML.getChild(sourceElement, FederationOptionsBuilder.federationOptionsElement);
    if (optionsElement == null) {
      return new FederationOptions();
    } else {
      return new FederationOptionsBuilder(optionsElement).build();
    }
  }
}

代码示例来源：origin: com.yahoo.vespa/config-model

private Node readCertificateProxy(Element providerElement) {
  Element certificateProxySpec = XML.getChild(providerElement, "yca-proxy");
  if (certificateProxySpec == null) {
    return null; // no proxy
  }
  if(getAttributeOrNull(certificateProxySpec, "host") == null) {
    return new Node(null, 0); // default proxy
  }
  return readNode(certificateProxySpec);
}

代码示例来源：origin: com.yahoo.vespa/config-model

@Override
protected Admin doBuild(DeployState deployState, AbstractConfigProducer parent, Element adminElement) {
  Monitoring monitoring = getMonitoring(XML.getChild(adminElement,"monitoring"));
  Metrics metrics = new MetricsBuilder(applicationType, predefinedMetricSets)
      .buildMetrics(XML.getChild(adminElement, "metrics"));
  FileDistributionConfigProducer fileDistributionConfigProducer = getFileDistributionConfigProducer(parent);
  Admin admin = new Admin(parent, monitoring, metrics, multitenant, fileDistributionConfigProducer, deployState.isHosted());
  admin.setApplicationType(applicationType);
  doBuildAdmin(deployState, admin, adminElement);
  new ModelConfigProvider(admin);
  return admin;
}

代码示例来源：origin: com.yahoo.vespa/config-model

private void addModelEvaluation(Element spec, ContainerCluster cluster, ConfigModelContext context) {
  Element modelEvaluationElement = XML.getChild(spec, "model-evaluation");
  if (modelEvaluationElement == null) return;
  RankProfileList profiles =
      context.vespaModel() != null ? context.vespaModel().rankProfileList() : RankProfileList.empty;
  cluster.setModelEvaluation(new ContainerModelEvaluation(cluster, profiles));
}

代码示例来源：origin: com.yahoo.vespa/config-model

private void addProcessing(DeployState deployState, Element spec, ContainerCluster cluster) {
  Element processingElement = XML.getChild(spec, "processing");
  if (processingElement == null) return;
  addIncludes(processingElement);
  cluster.setProcessingChains(new DomProcessingBuilder(null).build(deployState, cluster, processingElement),
                serverBindings(processingElement, ProcessingChains.defaultBindings));
  validateAndAddConfiguredComponents(deployState, cluster, processingElement, "renderer", ContainerModelBuilder::validateRendererElement);
}

代码示例来源：origin: com.yahoo.vespa/config-model

private void addSearch(DeployState deployState, Element spec, ContainerCluster cluster) {
  Element searchElement = XML.getChild(spec, "search");
  if (searchElement == null) return;
  addIncludes(searchElement);
  cluster.setSearch(buildSearch(deployState, cluster, searchElement));
  addSearchHandler(cluster, searchElement);
  addGUIHandler(cluster);
  validateAndAddConfiguredComponents(deployState, cluster, searchElement, "renderer", ContainerModelBuilder::validateRendererElement);
}

代码示例来源：origin: com.yahoo.vespa/config-model

@Override
protected void doBuildAdmin(DeployState deployState, Admin admin, Element adminE) {
  List<Configserver> configservers = parseConfigservers(deployState, admin, adminE);
  admin.setLogserver(parseLogserver(deployState, admin, adminE));
  admin.addConfigservers(configservers);
  admin.addSlobroks(getSlobroks(deployState, admin, XML.getChild(adminE, "slobroks")));
  if ( ! admin.multitenant())
    admin.setClusterControllers(addConfiguredClusterControllers(deployState, admin, adminE));
  ModelElement adminElement = new ModelElement(adminE);
  addLogForwarders(adminElement.getChild("logforwarding"), admin);
}