Example usage for org.w3c.dom NodeList getLength

Introduction

In this page you can find the example usage for org.w3c.dom NodeList getLength.

Prototype

public int getLength();

Source Link

Document

The number of nodes in the list.

Usage

From source file:Main.java

public static List<Node> getChildNodes(Node node, String... elements) {
    List<Node> result = new ArrayList<Node>();
    NodeList childNodes = node.getChildNodes();
    for (int i = 0; i < childNodes.getLength(); i++) {
        Node childNode = childNodes.item(i);
        for (String element : elements) {
            if (element.equals(childNode.getNodeName())) {
                result.add(childNode);//from  w ww . ja  v a2  s  .c o  m
            }
        }
    }
    return result;
}

From source file:Main.java

public static Element getChildByTagName(Element element, String tagName) {
    Element result = null;//from   w  w w.  j  a  v a2s.c o  m
    NodeList childNodes = element.getChildNodes();
    for (int i = 0; i < childNodes.getLength(); i++) {
        Node n = childNodes.item(i);
        if (!(n instanceof Element)) {
            continue;
        }
        if (((Element) n).getTagName().equals(tagName)) {
            if (result != null) {
                throw new RuntimeException("Too many elements with tag name " + tagName);
            }
            result = (Element) n;
        }
    }
    return result;
}

From source file:Main.java

/** Return a list of the elements that are direct children of the given
 * node./*w ww  . j a va 2  s. com*/
 */
public static List<Element> getChildElements(Node node) {
    NodeList childNodes = node.getChildNodes();
    List result = new ArrayList(childNodes.getLength());
    for (int i = 0; i < childNodes.getLength(); i++) {
        Node oneChild = childNodes.item(i);
        if (oneChild instanceof Element)
            result.add(oneChild);
    }
    return result;
}

From source file:Main.java

public static Element getChildElementNodeByName(Node node, String name) {
    if (node == null) {
        return null;
    }/*from www  .j  a  v a  2 s  .c  om*/
    NodeList nodeList = node.getChildNodes();
    if (nodeList != null && nodeList.getLength() > 0) {
        for (int i = 0; i < nodeList.getLength(); i++) {
            Node item = nodeList.item(i);
            if (item != null
                    && (node.getNodeType() == Node.ELEMENT_NODE || node.getNodeType() == Node.DOCUMENT_NODE)
                    && name.equalsIgnoreCase(item.getNodeName())) {
                return (Element) item;
            }
        }
    }
    return null;
}

From source file:Main.java

/**
 * Finds the first child of a node with the given name
 * @param parent the parent node/*from   w  w  w  . ja  v a2 s .c om*/
 * @param name the name
 * @return the child node
 */
public static Node findFirstChild(Node parent, String name) {
    NodeList children = parent.getChildNodes();
    for (int i = 0; i < children.getLength(); ++i) {
        Node node = children.item(i);
        if (name.equals(node.getNodeName())) {
            return node;
        }
    }
    return null;
}

From source file:Main.java

private static void makeNamelist(Document doc) {
    String names = null;//from   w  ww. ja v a2 s . c om
    Element root = doc.getDocumentElement();
    NodeList nameElements = root.getElementsByTagName("name");
    for (int i = 0; i < nameElements.getLength(); i++) {
        Element name = (Element) nameElements.item(i);
        Text nametext = (Text) name.getFirstChild();
        if (names == null) {
            names = nametext.getData();
        } else {
            names += ", " + nametext.getData();
        }
    }
    Element namelist = doc.createElement("names");
    Text namelisttext = doc.createTextNode(names);
    namelist.appendChild(namelisttext);
    root.insertBefore(namelist, root.getFirstChild());
}

From source file:Main.java

/**
 * Returns a List of all descendant Element nodes having the specified
 * [namespace name] property. The elements are listed in document order.
 * /*from  w  w w. j a  v  a  2s  .  c o  m*/
 * @param node
 *            The node to search from.
 * @param namespaceURI
 *            An absolute URI denoting a namespace name.
 * @return A List containing elements in the specified namespace; the list
 *         is empty if there are no elements in the namespace.
 */
public static List<Element> getElementsByNamespaceURI(Node node, String namespaceURI) {
    List<Element> list = new ArrayList<Element>();
    NodeList children = node.getChildNodes();
    for (int i = 0; i < children.getLength(); i++) {
        Node child = children.item(i);
        if (child.getNodeType() != Node.ELEMENT_NODE)
            continue;
        if (child.getNamespaceURI().equals(namespaceURI))
            list.add((Element) child);
    }
    return list;
}

From source file:Main.java

public static List<String> getPropertiesFromXML(Node propNode) {
    ArrayList<String> properties;
    properties = new ArrayList<String>();
    NodeList childList = propNode.getChildNodes();

    for (int i = 0; i < childList.getLength(); i++) {
        Node currentNode = childList.item(i);
        if (currentNode.getNodeType() == Node.ELEMENT_NODE) {
            String nodeName = currentNode.getLocalName();
            String namespace = currentNode.getNamespaceURI();
            // href is a live property which is handled differently
            properties.add(namespace + ":" + nodeName);
        }/*  w  w w  .  j  a v  a2s  .co m*/
    }
    return properties;
}

From source file:Main.java

/**
 * Find all child node(immediate children only) under current node that is an element node and node name is tagName
 * This is  a combination of getChildNodes() and getElementByTagName().
 * Also this helper method returns an iterable node list for convinient use in the foreach statement.
 * Only element node directly under currentNode are returned.(i.e no grandchildren).   
 * The order of the children are maintained (removing non-element node) 
 * @param currentNode//from  w w w.java  2 s .c om
 * @param tagName - case sensitive
 * @return list of element nodes equals tagname (case sensitive) 
 */
public static List<Node> getChildElementsByTagName(Node currentNode, String tagName) {
    List<Node> results = new ArrayList<Node>();
    NodeList childNodes = currentNode.getChildNodes();
    for (int i = 0; i < childNodes.getLength(); i++) {
        Node child = childNodes.item(i);
        if ((child.getNodeType() == Node.ELEMENT_NODE) && child.getNodeName().equals(tagName))
            results.add(child);
    }
    return results;
}

From source file:Main.java

public static Element getElementByTagNameAndAttributeValue(Element element, String tagName, String attrName,
        String attrValue) {/* w ww. ja v  a 2 s .c  o m*/
    NodeList nodeList = element.getElementsByTagName(tagName);
    if (nodeList.getLength() == 0) {
        return null;
    }
    for (int i = 0; i < nodeList.getLength(); i++) {
        Node node = nodeList.item(i);
        if (node.getNodeType() == Node.ELEMENT_NODE) {
            Element nodeElement = (Element) node;
            if (attrValue.equals(getAttributeValueByName(nodeElement, attrName))) {
                return nodeElement;
            }
        }
    }
    return null;
}