本文整理了Java中org.opendaylight.controller.config.util.xml.XmlElement.getOnlyChildElementOptionally()方法的一些代码示例，展示了XmlElement.getOnlyChildElementOptionally()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。XmlElement.getOnlyChildElementOptionally()方法的具体详情如下：
包路径：org.opendaylight.controller.config.util.xml.XmlElement
类名称：XmlElement
方法名：getOnlyChildElementOptionally

XmlElement.getOnlyChildElementOptionally介绍

暂无

代码示例

代码示例来源：origin: org.opendaylight.netconf/mdsal-netconf-connector

private XmlElement getElement(final XmlElement operationElement, String elementName) throws DocumentedException {
  final Optional<XmlElement> childNode = operationElement.getOnlyChildElementOptionally(elementName);
  if (!childNode.isPresent()) {
    throw new DocumentedException(elementName + " element is missing",
        ErrorType.protocol,
        ErrorTag.missing_element,
        ErrorSeverity.error);
  }
  return childNode.get();
}

代码示例来源：origin: org.opendaylight.controller/config-util

public Optional<XmlElement> getOnlyChildElementWithSameNamespaceOptionally() {
  Optional<XmlElement> child = getOnlyChildElementOptionally();
  if (child.isPresent()
      && child.get().getNamespaceOptionally().isPresent()
      && getNamespaceOptionally().isPresent()
      && getNamespaceOptionally().get().equals(child.get().getNamespaceOptionally().get())) {
    return child;
  }
  return Optional.absent();
}

代码示例来源：origin: org.opendaylight.netconf/mdsal-netconf-connector

/**
 *
 * @param operationElement operation element
 * @return if Filter is present and not empty returns Optional of the InstanceIdentifier to the read location in datastore.
 *          empty filter returns Optional.absent() which should equal an empty <data/> container in the response.
 *         if filter is not present we want to read the entire datastore - return ROOT.
 * @throws DocumentedException
 */
protected Optional<YangInstanceIdentifier> getDataRootFromFilter(XmlElement operationElement) throws DocumentedException {
  Optional<XmlElement> filterElement = operationElement.getOnlyChildElementOptionally(FILTER);
  if (filterElement.isPresent()) {
    if (filterElement.get().getChildElements().size() == 0) {
      return Optional.absent();
    }
    return Optional.of(getInstanceIdentifierFromFilter(filterElement.get()));
  } else {
    return Optional.of(ROOT);
  }
}

代码示例来源：origin: org.opendaylight.netconf/mdsal-netconf-connector

private static Optional<Datastore> parseSource(final XmlElement xml) throws DocumentedException {
  final Optional<XmlElement> sourceElement = xml.getOnlyChildElementOptionally(XmlNetconfConstants.SOURCE_KEY,
      XmlNetconfConstants.URN_IETF_PARAMS_XML_NS_NETCONF_BASE_1_0);
  return  sourceElement.isPresent() ?
      Optional.of(Datastore.valueOf(sourceElement.get().getOnlyChildElement().getName())) : Optional.<Datastore>absent();
}

代码示例来源：origin: org.opendaylight.netconf/netconf-util

public static Collection<String> extractCapabilitiesFromHello(Document doc) throws NetconfDocumentedException {
    XmlElement responseElement = XmlElement.fromDomDocument(doc);
    // Extract child element <capabilities> from <hello> with or without(fallback) the same namespace
    Optional<XmlElement> capabilitiesElement = responseElement
        .getOnlyChildElementWithSameNamespaceOptionally(XmlNetconfConstants.CAPABILITIES)
        .or(responseElement
            .getOnlyChildElementOptionally(XmlNetconfConstants.CAPABILITIES));

    List<XmlElement> caps = capabilitiesElement.get().getChildElements(XmlNetconfConstants.CAPABILITY);
    return Collections2.transform(caps, new Function<XmlElement, String>() {

      @Override
      public String apply(@Nonnull XmlElement input) {
        // Trim possible leading/tailing whitespace
        try {
          return input.getTextContent().trim();
        } catch (DocumentedException e) {
          LOG.trace("Error fetching input text content",e);
          return null;
        }
      }
    });

  }
}

代码示例来源：origin: org.opendaylight.netconf/netconf-util

public static Document applyRpcSubtreeFilter(Document requestDocument, Document rpcReply) throws DocumentedException {
  OperationNameAndNamespace operationNameAndNamespace = new OperationNameAndNamespace(requestDocument);
  if (XmlNetconfConstants.URN_IETF_PARAMS_XML_NS_NETCONF_BASE_1_0.equals(operationNameAndNamespace.getNamespace()) &&
      XmlNetconfConstants.GET.equals(operationNameAndNamespace.getOperationName()) ||
      XmlNetconfConstants.GET_CONFIG.equals(operationNameAndNamespace.getOperationName())) {
    // process subtree filtering here, in case registered netconf operations do
    // not implement filtering.
    Optional<XmlElement> maybeFilter = operationNameAndNamespace.getOperationElement().getOnlyChildElementOptionally(
        XmlNetconfConstants.FILTER, XmlNetconfConstants.URN_IETF_PARAMS_XML_NS_NETCONF_BASE_1_0);
    if (!maybeFilter.isPresent()) {
      return rpcReply;
    }
    XmlElement filter = maybeFilter.get();
    if (isSupported(filter)) {
      // do
      return filtered(maybeFilter.get(), rpcReply);
    }
  }
  return rpcReply; // return identical document
}

代码示例来源：origin: org.opendaylight.netconf/config-netconf-connector

.getOnlyChildElementOptionally(RpcFacade.CONTEXT_INSTANCE);