本文整理了Java中org.apache.felix.ipojo.metadata.Element.getElements()方法的一些代码示例，展示了Element.getElements()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。Element.getElements()方法的具体详情如下：
包路径：org.apache.felix.ipojo.metadata.Element
类名称：Element
方法名：getElements

Element.getElements介绍

[英]Gets sub-elements. If no sub-elements, an empty array is returned.
[中]获取子元素。如果没有子元素，则返回空数组。

代码示例

代码示例来源：origin: apache/felix

/**
 * Get parsed metadata.
 * The document must be parsed before calling this method.
 * @return : all the metadata.
 * @throws ParseException : occurs if an error occurs during the parsing.
 */
public Element[] getMetadata() throws ParseException {
  return m_elements[0].getElements();
}

代码示例来源：origin: apache/felix

private boolean arePropertiesEmpty() {
  return m_props.getElements().length == 0;
}

代码示例来源：origin: apache/felix

/**
 * Gets the elements array of the element type given in parameter.
 * @param name the type of the element to find (element name)
 * @param ns the namespace of the element
 * @return the resulting element array (<code>null</code> if the search failed)
 */
public Element[] getElements(String name, String ns) {
  if (ns == null || ns.length() == 0) {
    return getElements(name);
  }
  name = ns + ":" + name;
  return getElements(name);
}

代码示例来源：origin: org.apache.felix/org.apache.felix.ipojo.metadata

/**
 * Gets the elements array of the element type given in parameter.
 * @param name the type of the element to find (element name)
 * @param ns the namespace of the element
 * @return the resulting element array (<code>null</code> if the search failed)
 */
public Element[] getElements(String name, String ns) {
  if (ns == null || ns.length() == 0) {
    return getElements(name);
  }
  name = ns + ":" + name;
  return getElements(name);
}

代码示例来源：origin: apache/felix

private void collectStructuralFields(List<String> fieldsInStructure, Element structure) {
  Element[] fields = structure.getElements("field");
  if (fields != null) {
    for (Element field : fields) {
      fieldsInStructure.add(field.getAttribute("name"));
    }
  }
}

代码示例来源：origin: org.apache.felix/org.apache.felix.ipojo

/**
 * Gets the array of component type metadata.
 * @return the component metadata (composite & component).
 * An empty array is returned if no component type declaration.
 * @throws ParseException if a parsing error occurs
 */
public Element[] getComponentsMetadata() throws ParseException {
  Element[] elems = m_elements[0].getElements();
  List list = new ArrayList();
  for (int i = 0; i < elems.length; i++) {
    if (!"instance".equals(elems[i].getName())) {
      list.add(elems[i]);
    }
  }
  return (Element[]) list.toArray(new Element[list.size()]);
}

代码示例来源：origin: org.apache.felix/org.apache.felix.ipojo

/**
 * Gets the array of instance configuration described in the metadata.
 * @return the instances list or <code>null</code> if no instance configuration.
 * @throws ParseException if the metadata cannot be parsed successfully
 */
public Dictionary[] getInstances() throws ParseException {
  Element[] configs = m_elements[0].getElements("instance");
  if (configs == null) {
    return null;
  }
  Dictionary[] dicts = new Dictionary[configs.length];
  for (int i = 0; i < configs.length; i++) {
    dicts[i] = parseInstance(configs[i]);
  }
  return dicts;
}

代码示例来源：origin: apache/felix

/**
 * Gets the array of component type metadata.
 * @return the component metadata (composite & component).
 * An empty array is returned if no component type declaration.
 * @throws ParseException if a parsing error occurs
 */
public Element[] getComponentsMetadata() throws ParseException {
  Element[] elems = m_elements[0].getElements();
  List list = new ArrayList();
  for (int i = 0; i < elems.length; i++) {
    if (!"instance".equals(elems[i].getName())) {
      list.add(elems[i]);
    }
  }
  return (Element[]) list.toArray(new Element[list.size()]);
}

代码示例来源：origin: apache/felix

/**
 * Gets the array of instance configuration described in the metadata.
 * @return the instances list or <code>null</code> if no instance configuration.
 * @throws ParseException if the metadata cannot be parsed successfully
 */
public Dictionary[] getInstances() throws ParseException {
  Element[] configs = m_elements[0].getElements("instance");
  if (configs == null) {
    return null;
  }
  Dictionary[] dicts = new Dictionary[configs.length];
  for (int i = 0; i < configs.length; i++) {
    dicts[i] = parseInstance(configs[i]);
  }
  return dicts;
}

代码示例来源：origin: org.apache.felix/org.apache.felix.ipojo

/**
 * Parses a complex property.
 * This property will be built as a {@link Map}.
 * The used {@link Map} implementation is {@link HashMap}.
 * @param prop the property to parse
 * @return the resulting Map
 * @throws ParseException if an internal property is incorrect.
 */
private Map parseMap(Element prop) throws ParseException {
  // Check if there is 'property' elements
  Element[] subProps = prop.getElements("property");
  if (subProps != null) {
    Map map = new HashMap(); // Create an hashmap to store elements.
    for (int i = 0; i < subProps.length; i++) {
      parseProperty(subProps[i], map);
    }
    return map;
  } else { // if not inject an empty map
    return new HashMap(0);
  }
}

代码示例来源：origin: org.apache.felix/org.apache.felix.ipojo

/**
 * Parses a complex property. This property will be built as a {@link List}.
 * The used {@link List} implementation is {@link ArrayList}.
 * The order of elements is kept.
 * @param prop the property to parse
 * @return the resulting List
 * @throws ParseException if an internal property is incorrect.
 */
private List parseList(Element prop) throws ParseException {
  Element[] subProps = prop.getElements("property");
  if (subProps != null) {
    List list = new ArrayList(subProps.length); // Create a list to store elements.
    for (int i = 0; i < subProps.length; i++) {
      parseAnonymousProperty(subProps[i], list); // Anonymous properties.
    }
    return list;
  } else {
    // If no sub-properties, inject an empty list.
    return new ArrayList(0);
  }
}

代码示例来源：origin: apache/felix

/**
 * Looks for 'field' attribute in the given metadata.
 * @param fields discovered fields (accumulator)
 * @param metadata metadata to inspect
 */
public static void findFields(List<String> fields, Element metadata) {
  String field = metadata.getAttribute("field");
  if (field != null && !fields.contains(field)) {
    fields.add(field);
  }
  for (Element element : metadata.getElements()) {
    findFields(fields, element);
  }
}

代码示例来源：origin: apache/felix

/**
 * Find all the values of the specified attribute in the given element.
 * @param metadata Element to be traversed
 * @param attributeName Search attribute name
 * @return Set of attribute values (no duplicate).
 */
public static Set<String> findAttributes(Element metadata, String attributeName) {
  Set<String> referred = new HashSet<String>();
  // Search in the given element
  if (metadata.containsAttribute(attributeName)) {
    referred.add(metadata.getAttribute(attributeName));
  }
  // Search in children
  for (Element elem : metadata.getElements()) {
    Set<String> found = findAttributes(elem, attributeName);
    referred.addAll(found);
  }
  // Return all found values
  return referred;
}

代码示例来源：origin: org.apache.felix/org.apache.felix.ipojo.composite

/**
 * Compute required handlers.
 * @return the list of required handler.
 */
public List<RequiredHandler> getRequiredHandlerList() {
  List<RequiredHandler> list = new ArrayList<RequiredHandler>();
  Element[] elems = m_componentMetadata.getElements();
  for (Element current : elems) {
    RequiredHandler req = new RequiredHandler(current.getName(), current.getNameSpace());
    if (!list.contains(req)) {
      list.add(req);
    }
  }
  
  // Add architecture if architecture != 'false'
  String arch = m_componentMetadata.getAttribute("architecture");
  if (arch == null || arch.equalsIgnoreCase("true")) {
    RequiredHandler req = new RequiredHandler("architecture", null);
    if (! list.contains(req)) { list.add(req); }
  }
  
  return list;
}

代码示例来源：origin: org.apache.felix/org.apache.felix.ipojo

/**
 * Configure method.
 * Look for the first 'controller' element.
 * @param metadata : metadata
 * @param configuration : configuration
 * @throws ConfigurationException : the field attribute is missing or does not exist in the class.
 * @see org.apache.felix.ipojo.Handler#configure(org.apache.felix.ipojo.metadata.Element, java.util.Dictionary)
 */
public void configure(Element metadata, Dictionary configuration) throws ConfigurationException {
  Element[] controller = metadata.getElements("controller");
  m_field = controller[0].getAttribute("field");
  getInstanceManager().register(new FieldMetadata(m_field, "boolean"), this);
}

代码示例来源：origin: apache/felix

/**
 * Configure method.
 * Look for the first 'controller' element.
 * @param metadata : metadata
 * @param configuration : configuration
 * @throws ConfigurationException : the field attribute is missing or does not exist in the class.
 * @see org.apache.felix.ipojo.Handler#configure(org.apache.felix.ipojo.metadata.Element, java.util.Dictionary)
 */
public void configure(Element metadata, Dictionary configuration) throws ConfigurationException {
  Element[] controller = metadata.getElements("controller");
  m_field = controller[0].getAttribute("field");
  getInstanceManager().register(new FieldMetadata(m_field, "boolean"), this);
}

代码示例来源：origin: apache/felix

private void addCallbacksToDependency(Element dependencyElement, Dependency dep) throws ConfigurationException {
  Element[] cbs = dependencyElement.getElements("Callback");
  for (int j = 0; cbs != null && j < cbs.length; j++) {
    if (!cbs[j].containsAttribute("method") || !cbs[j].containsAttribute("type")) {
      throw new ConfigurationException("Requirement Callback : a dependency callback must contain a method " +
          "and a type (bind or unbind) attribute");
    }
    String method = cbs[j].getAttribute("method");
    String type = cbs[j].getAttribute("type");
    int methodType = DependencyCallback.UNBIND;
    if ("bind".equalsIgnoreCase(type)) {
      methodType = DependencyCallback.BIND;
    } else if ("modified".equalsIgnoreCase(type)) {
      methodType = DependencyCallback.MODIFIED;
    }
    dep.addDependencyCallback(createDependencyHandler(dep, method, methodType));
  }
}

代码示例来源：origin: apache/felix

private Element getPropertyElement() {

    // Gather all the <property> Elements
    Element[] props = m_parent.getElements("property");
    Element prop = null;
    for (int i = 0; props != null && prop == null && i < props.length; i++) {

      // Get the first one with the good name
      String name = props[i].getAttribute("name");
      if (name != null && name.equals(m_name)) {
        prop = props[i];
      }
    }

    // Create the Element if not present
    if (prop == null) {
      prop = new Element("property", "");
      m_parent.addElement(prop);
      if (m_name != null) {
        prop.addAttribute(new Attribute("name", m_name));
      }
    }

    return prop;
  }
}

代码示例来源：origin: org.apache.felix/org.apache.felix.ipojo

private void addCallbacksToDependency(Element dependencyElement, Dependency dep) throws ConfigurationException {
  Element[] cbs = dependencyElement.getElements("Callback");
  for (int j = 0; cbs != null && j < cbs.length; j++) {
    if (!cbs[j].containsAttribute("method") || !cbs[j].containsAttribute("type")) {
      throw new ConfigurationException("Requirement Callback : a dependency callback must contain a method " +
          "and a type (bind or unbind) attribute");
    }
    String method = cbs[j].getAttribute("method");
    String type = cbs[j].getAttribute("type");
    int methodType = DependencyCallback.UNBIND;
    if ("bind".equalsIgnoreCase(type)) {
      methodType = DependencyCallback.BIND;
    } else if ("modified".equalsIgnoreCase(type)) {
      methodType = DependencyCallback.MODIFIED;
    }
    dep.addDependencyCallback(createDependencyHandler(dep, method, methodType));
  }
}

代码示例来源：origin: apache/felix

private void renderElement(Element element, StringBuilder builder) {
  // If the element is already here, do not re-add the element.
  if(!isFiltered(element)) {
    // Print the beginning of the element
    startElement(element, builder);
    // Render all attributes
    for (Attribute attribute : element.getAttributes()) {
      renderAttribute(attribute, builder);
    }
    // Render child elements
    for (Element child : element.getElements()) {
      renderElement(child, builder);
    }
    // Print the end of the element
    endElement(builder);
  }
}