Example usage for org.w3c.dom Element getChildNodes

Introduction

In this page you can find the example usage for org.w3c.dom Element getChildNodes.

Prototype

public NodeList getChildNodes();

Source Link

Document

A NodeList that contains all children of this node.

Usage

From source file:Main.java

/**
 * Gets all facets of sourceElement. If facet has a few children the method
 * will return first one.//ww  w . jav  a 2s. c  o m
 * 
 * @param sourceElement the source element
 * @param facetName      *
 * param returnTextNode return child text node if facet doesn't have
 * any child elements;
 * @param returnTextNode the return text node
 * 
 * @return the facets
 */
public static ArrayList<Node> getFacets(Element sourceElement, boolean returnTextNode) {
    ArrayList<Node> facets = new ArrayList<Node>();
    NodeList children = sourceElement.getChildNodes();
    for (int i = 0; i < children.getLength(); i++) {
        Node node = children.item(i);
        if (node instanceof Element && "f:facet".equals(node.getNodeName())) { //$NON-NLS-1$
            Element element = (Element) node;
            NodeList childNodes = element.getChildNodes();
            Text textNode = null;
            for (int j = 0; j < childNodes.getLength(); j++) {
                Node child = childNodes.item(j);
                if (child instanceof Element) {
                    facets.add(child);
                    break;
                } else if (child instanceof Text) {
                    textNode = (Text) child;
                }
            }
            if (returnTextNode && facets.isEmpty()) {
                facets.add(textNode);
            }
        }
    }
    return facets;
}

From source file:Main.java

/**
 * Looks through all child elements of the specified root (recursively)
 * and returns the first element that corresponds to all parameters.
 *
 * @param root the Element where the search should begin
 * @param tagName the name of the node we're looking for
 * @param keyAttributeName the name of an attribute that the node has to
 * have//  w  w  w.j  a  v a 2 s .  c  o m
 * @param keyAttributeValue the value that attribute must have
 * @return the Element in the tree under root that matches the specified
 * paameters.
 * @throws NullPointerException if any of the arguments is null.
 */
public static Element locateElement(Element root, String tagName, String keyAttributeName,
        String keyAttributeValue) {
    NodeList nodes = root.getChildNodes();
    Node node;
    int len = nodes.getLength();
    for (int i = 0; i < len; i++) {
        node = nodes.item(i);
        if (node.getNodeType() != Node.ELEMENT_NODE)
            continue;

        // is this the node we're looking for?
        if (node.getNodeName().equals(tagName)) {
            String attr = ((Element) node).getAttribute(keyAttributeName);

            if (attr != null && attr.equals(keyAttributeValue))
                return (Element) node;
        }

        //look inside.
        Element child = locateElement((Element) node, tagName, keyAttributeName, keyAttributeValue);

        if (child != null)
            return child;

    }

    return null;
}

From source file:Main.java

/**
 * returns a XML element value.//from   w w  w  .  j  a  v  a2 s.  c  o m
 *
 * @param pElement          Document XML element
 * @return                  String XML node value
 */
public static String getValue(Element pElement) throws Exception {
    String s = null;
    try {
        NodeList nodes = pElement.getChildNodes();
        //find a value whose value is non-whitespace
        for (int i = 0; i < nodes.getLength(); i++) {
            s = ((Node) nodes.item(i)).getNodeValue().trim();
            if (s.equals("") || s.equals("\r"))
                continue;
        }
    } catch (Exception ex) {
        throw new Exception(ex.getMessage());
    }
    return s;
}

From source file:Main.java

/**
 * Get first child element with the provided node name and attribute that
 * are direct child the provided element.
 * /*from  w w w .  j  av a  2 s  .c om*/
 * @param parent
 * @param name
 * @param attributeName
 * @param attributeValue
 * @return element if found, otherwise null
 */
public static Element getChildElementByNameAndAttribute(Element parent, String name, String attributeName,
        String attributeValue) {
    assertNotNull(parent);

    NodeList children = parent.getChildNodes();
    Node node;
    for (int i = 0; i < children.getLength(); i++) {
        node = children.item(i);
        if (node.getNodeType() == Node.ELEMENT_NODE && node.getNodeName().equals(name)) {
            Element element = (Element) node;
            if (element.getAttribute(attributeName).equals(attributeValue)) {
                return element;
            }
        }
    }

    return null;
}

From source file:Main.java

/**
 * Concatenates the values of all child nodes of type 'Text' or 'CDATA'/
 *
 * @param element/* www . j a  va2s  . co m*/
 * @return String representing the value of all Text and CDATA child nodes or
 * <code>null</code> if the length of the resulting String is 0.
 * @see #isText(org.w3c.dom.Node)
 */
public static String getText(Element element) {
    StringBuilder content = new StringBuilder();
    if (element != null) {
        NodeList nodes = element.getChildNodes();
        for (int i = 0; i < nodes.getLength(); i++) {
            Node child = nodes.item(i);
            if (isText(child)) {
                // cast to super class that contains Text and CData
                content.append(((CharacterData) child).getData());
            }
        }
    }
    return (content.length() == 0) ? null : content.toString();
}

From source file:Main.java

public static String GetChildElementText(Element element, String name, String defaultValue) {
    if (element != null && name != null && !name.isEmpty()) {
        NodeList nodes = element.getChildNodes();

        for (int i = 0; i < nodes.getLength(); i++) {
            Node node = nodes.item(i);

            if (node instanceof Element && name.equals(node.getNodeName())) {
                return node.getTextContent();
            }/*w  ww.  j  av  a  2  s.  c o m*/
        }
    }
    return defaultValue;
}

From source file:Main.java

/**
 * Looks through all child elements of the specified root (recursively)
 * and returns the first element that corresponds to all parameters.
 *
 * @param root the Element where the search should begin
 * @param tagName the name of the node we're looking for
 * @param keyAttributeName the name of an attribute that the node has to
 * have/*from  www.ja  v a  2  s. c  om*/
 * @param keyAttributeValue the value that attribute must have
 * @return the Element in the tree under root that matches the specified
 * parameters.
 * @throws NullPointerException if any of the arguments is null.
 */
public static Element locateElement(Element root, String tagName, String keyAttributeName,
        String keyAttributeValue) {
    NodeList nodes = root.getChildNodes();
    int len = nodes.getLength();

    for (int i = 0; i < len; i++) {
        Node node = nodes.item(i);

        if (node.getNodeType() != Node.ELEMENT_NODE)
            continue;

        Element element = (Element) node;

        // is this the node we're looking for?
        if (node.getNodeName().equals(tagName)) {
            String attr = element.getAttribute(keyAttributeName);

            if ((attr != null) && attr.equals(keyAttributeValue))
                return element;
        }

        //look inside.
        Element child = locateElement(element, tagName, keyAttributeName, keyAttributeValue);

        if (child != null)
            return child;
    }
    return null;
}

From source file:Main.java

public static Hashtable<String, Element> getChildHash(Element elem, String elementName, String attrName) {
    if (elem == null)
        return null;
    NodeList nl = elem.getChildNodes();
    if (nl == null)
        return null;
    Hashtable<String, Element> retlist = new Hashtable<String, Element>(100);
    for (int n = 0; n < nl.getLength(); n++) {
        Node child = nl.item(n);// w  w  w. j  a  v a 2s  . c  o  m
        if (child instanceof Element) {
            Element element = (Element) child;
            if (!elementName.equals(element.getTagName()))
                continue;
            String keyValue = element.getAttribute(attrName);
            if (keyValue == null)
                continue;
            retlist.put(keyValue, element);
        }
    }
    if (retlist.size() == 0)
        return null;
    return retlist;
}

From source file:Main.java

public static List<Element> elementsQName(final Element element, final Set<QName> allowedTagNames) {
    List<Element> elements = null;
    final NodeList nodeList = element.getChildNodes();
    if (nodeList != null) {
        for (int i = 0; i < nodeList.getLength(); i++) {
            final Node child = nodeList.item(i);
            if (Element.class.isAssignableFrom(child.getClass())) {
                final Element childElement = (Element) child;
                final QName childElementQName = new QName(childElement.getNamespaceURI(),
                        childElement.getLocalName());
                if (allowedTagNames.contains(childElementQName)) {
                    if (elements == null) {
                        elements = new ArrayList<Element>();
                    }/*from w ww.  jav a  2  s . com*/
                    elements.add(childElement);
                }
            }
        }
    }
    return elements;
}

From source file:Main.java

/**
 * Get the element text node.  Locate the text node and return it.  For example;
 * <element>this is the text node</element>
 *
 * @param element The element to get the text node for
 * @return The text node/*from   w w  w  . jav  a 2 s.  c  o  m*/
 */
public static Node getElementTextNode(Element element) {

    Node textNode = null;

    // go through each child element
    Node node;
    short nodeType;
    NodeList children = element.getChildNodes();
    for (int ii = 0; ii < children.getLength(); ii++) {
        node = children.item(ii);
        nodeType = node.getNodeType();
        if (nodeType == Node.TEXT_NODE) {
            textNode = node;
            break;
        } else if (nodeType == Node.CDATA_SECTION_NODE) {
            textNode = node;
            break;
        }
    }
    return (textNode);
}