Java Utililty Methods XML Node Find

List of utility methods to do XML Node Find

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Description

The list of methods to do XML Node Find are organized into topic(s).

Method

intfindAllDescendantElements(Node e, String qname, Collection vector)
find All Descendant Elements 
int n = 0;
if (e == null || qname == null)
    return 0;
for (Node c = e.getFirstChild(); c != null; c = c.getNextSibling()) {
    if (c.getNodeType() == Node.ELEMENT_NODE && c.getNodeName().equals(qname)) {
        ++n;
        vector.add((Element) c);
    n += findAllDescendantElements(c, qname, vector);
return n;
voidfindAllNodes(Node node, String[] nodeNames, ArrayList results)
find All Nodes 
NodeList nodes = node.getChildNodes();
if (nodes != null) {
    for (int i = 0; i < nodes.getLength(); i++) {
        for (int j = 0; j < nodeNames.length; j++) {
            if (nodes.item(i).getNodeName().equals(nodeNames[j])) {
                results.add(nodes.item(i));
        findAllNodes(nodes.item(i), nodeNames, results);
ListfindAllNodesRecursive(Node n, String name)
find All Nodes Recursive 
List<Node> nodes = new ArrayList<Node>();
findRecursive(n, name, nodes, false);
return nodes;
voidfindAllProcessingIstructions(Node node, String name, List result)
find All Processing Istructions 
NodeList nodeList = node.getChildNodes();
if (nodeList == null) {
    return;
for (int i = 0; i < nodeList.getLength(); ++i) {
    Node n = nodeList.item(i);
    if (n.getNodeType() == Node.PROCESSING_INSTRUCTION_NODE) {
        if (name == null || name.length() == 0 || n.getNodeName().equals(name)) {
...
voidfindAllUrisRecursive(Node node, List nodes)
find All Uris Recursive 
String url = getSafeAttribute(node, "uri");
if (url != null) {
    nodes.add(node);
NodeList children = node.getChildNodes();
if (children != null) {
    for (int i = 0; i < children.getLength(); i++) {
        Node child = children.item(i);
...
ElementfindElement(Node node, String tagName)
find Element 
Element result = null;
NodeList nodeList = node.getChildNodes();
if (nodeList == null) {
    return result;
for (int i = 0; i < nodeList.getLength(); ++i) {
    Element element = checkIfElement(nodeList.item(i), tagName);
    if (element != null) {
...
ElementfindElement(Node startNode, String name, String namespace)
Returns the first element that matches name and namespace. 
if (startNode == null) {
    return null;
Node startParent = startNode.getParentNode();
Node processedNode = null;
while (startNode != null) {
    if (startNode.getNodeType() == Node.ELEMENT_NODE && startNode.getLocalName().equals(name)) {
        String ns = startNode.getNamespaceURI();
...
ElementfindElementById(Node head, String id)
Static method to find DOM elements by an ID field 
Element element = null;
for (Node node = head.getFirstChild(); node != null; node = node.getNextSibling()) {
    if (node.hasChildNodes()) {
        element = findElementById(node, id);
        if (element != null)
            return element;
    if (node.hasAttributes()) { 
...
ElementfindElementById(Node node, String id)
Find descendant element having specified id attribute. 
Node child = node.getFirstChild();
while (child != null) {
    if (child.getNodeType() == Node.ELEMENT_NODE) {
        Element childElement = (Element) child;
        String value = childElement.getAttributeNS(null, "id");
        if (value != null && value.length() > 0) {
            value = value.trim();
            if (value.equals(id)) {
...
ElementfindElementByName(Node node, final String name)
Look for Element node of given name. 
while (node != null) {
    if (node.getNodeType() == Node.ELEMENT_NODE && node.getNodeName().equals(name))
        return (Element) node;
    node = node.getNextSibling();
return null;