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 Element findElement(Element parent, String uri, String localName) {
    NodeList nl = parent.getElementsByTagNameNS(uri, localName);
    if (nl.getLength() > 0) {
        return (Element) nl.item(0);
    } else {/*from w ww .j av a 2 s . c o m*/
        return null;
    }
}

From source file:Main.java

/**
 * Find node by node while ignoring the case.
 * //  w ww .  j av  a 2s . c  o  m
 * @param tagName     node tag (case-insensitive).
 * @param nodes       a list of nodes to look through.
 * @return a node name if the node is found, or null otherwise.
 */
public static Node getNode(String tagName, NodeList nodes) {
    for (int x = 0; x < nodes.getLength(); x++) {
        Node node = nodes.item(x);
        if (node.getNodeName().equalsIgnoreCase(tagName)) {
            return node;
        }
    }

    return null;
}

From source file:Main.java

/**
 * Get the value of the first tag found with the given name in the given document<br/>.
 *
 * @param doc//from w  ww .  j a va 2  s .  c  om
 * @param tagName
 * @return the value of the node or the empty string, if no node with this name exits in this document
 */
public static String getTagValue(Document doc, String tagName) {
    NodeList tagList = doc.getElementsByTagName(tagName);
    if (tagList.getLength() > 0) {
        return tagList.item(0).getFirstChild().getNodeValue().trim();
    }
    return "";
}

From source file:Main.java

public static List<Element> getMultipleElementsByName(Node node, String name) {
    List<Element> elements = new ArrayList<Element>();
    NodeList nodeList = node.getChildNodes();
    int count = nodeList.getLength();
    for (int i = 0; i < count; i++) {
        Node child = nodeList.item(i);
        if (child instanceof Element && child.getNodeName().equals(name)) {
            elements.add((Element) child);
        }//  ww w  . j a v a2 s  . c  om
    }
    return elements;
}

From source file:Main.java

public static Element[] getChildrenByName(Element e, String name) {
    NodeList nl = e.getChildNodes();
    int max = nl.getLength();
    LinkedList<Node> list = new LinkedList<Node>();
    for (int i = 0; i < max; i++) {
        Node n = nl.item(i);/*  ww w .  j ava 2s .com*/
        if (n.getNodeType() == Node.ELEMENT_NODE && n.getNodeName().equals(name)) {
            list.add(n);
        }
    }
    return list.toArray(new Element[list.size()]);
}

From source file:Main.java

public static Node getFirstChildByTagName(Node parent, String tagName) {
    NodeList nodeList = parent.getChildNodes();
    for (int i = 0; i < nodeList.getLength(); i++) {
        Node node = nodeList.item(i);
        if (node.getNodeType() == Node.ELEMENT_NODE && node.getNodeName().equalsIgnoreCase(tagName))
            return node;
    }//  w w w.j  a  va  2  s. com
    return null;
}

From source file:Main.java

public static void removeContent(Element element) {
    NodeList nodeList = element.getChildNodes();
    while (nodeList.getLength() > 0) {
        element.removeChild(nodeList.item(0));
    }/* w  ww  .ja  v  a 2s  .  c o  m*/

}

From source file:Main.java

/**
 * @return the child element, throws exception if the parent does not
 *          have exactly one sub element with name
 *///  w  w  w.  j  a  v a2 s.  c  o  m
public static Element getSingleSubElement(Element parentElement, String name) {
    NodeList nodes = parentElement.getElementsByTagName(name);
    if (nodes.getLength() != 1) {
        throw new IllegalArgumentException("Expected the element " + parentElement.getNodeName()
                + " to have one child called " + name + " but found " + nodes.getLength());
    }
    return (Element) nodes.item(0);
}

From source file:Main.java

public static List<Element> getChildElements(Element elt, String name) {
    List<Element> list = new ArrayList<Element>();

    NodeList nodes = elt.getChildNodes();
    for (int i = 0; i < nodes.getLength(); i++) {
        Node child = nodes.item(i);
        if (child.getNodeType() == Node.ELEMENT_NODE)
            if (name.equals(child.getNodeName()))
                list.add((Element) child);
    }/*from  w w w  .j  a v a 2s.  c o  m*/
    return list;
}

From source file:Main.java

/**
 * Removes all of the child nodes from a parent node.
 */// w  w w  . j  a va2  s.com
public static void emptyNode(final Node parent) {
    final NodeList childNodes = parent.getChildNodes();
    for (int i = childNodes.getLength() - 1; i >= 0; i--) {
        final Node childNode = childNodes.item(i);
        childNode.getParentNode().removeChild(childNode);
    }
}