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

/**
 * Get the attribute value of a given attribute name for
 * the first XML {@code org.w3c.dom.Element} of given name.
 *
 * @param elem the parent XML Element/*from  w w  w .j a va 2 s.c  om*/
 * @param name the name of the child text Element
 * @param attrName the attribute name
 * @return attribute value of named child Element
 */
public static String getFirstAttribute(Element elem, String name, String attrName) {
    NodeList nodeList = elem.getElementsByTagName(name);
    if (nodeList.getLength() == 0) {
        return null;
    }

    return (((Element) nodeList.item(0)).getAttribute(attrName));
}

From source file:Main.java

public static void printNodeList(NodeList list) {
    for (int i = 0; i < list.getLength(); i++) {
        printNode(list.item(i), "");
        System.out.println("############################");
    }//from  w  ww  .j  av  a  2  s. co m
}

From source file:Main.java

public static void removeElementXML(Node node, short nodeType, String name) {
    if (node.getNodeType() == nodeType && (name == null || node.getNodeName().equals(name))) {
        node.getParentNode().removeChild(node);
    } else {// www  .  j  a va  2 s.c  o m
        // Visit the children
        NodeList list = node.getChildNodes();
        for (int i = 0; i < list.getLength(); i++) {
            removeElementXML(list.item(i), nodeType, name);
        }
    }
}

From source file:Main.java

public static Collection<Element> getChildElements(Node node) {
    List<Element> elements = new ArrayList<Element>();
    NodeList nodes = node.getChildNodes();
    for (int i = 0; i < nodes.getLength(); i++) {
        Node childNode = nodes.item(i);
        if (childNode instanceof Element) {
            elements.add((Element) childNode);
        }/*from  w ww  . java  2s  .c o  m*/
    }
    return elements;
}

From source file:Main.java

/**
 * Return array of children nodes/*from w  w  w .  j  a v a  2s .  c o  m*/
 */
public static Node[] childrenArray(Node node) {
    NodeList list = node.getChildNodes();
    Node[] children = new Node[list.getLength()];
    for (int i = 0; i < children.length; i++) {
        children[i] = list.item(i);
    }
    return children;
}

From source file:Main.java

public static Vector getChildrenElementsByTag(Node node, String name) {
    Vector result = new Vector();
    NodeList nl = node.getChildNodes();
    for (int i = 0; i < nl.getLength(); i++)
        if (nl.item(i) instanceof Element
                && (((Element) nl.item(i)).getTagName().equals(name) || name == null)) {
            result.add(nl.item(i));/* w ww . j a  v  a2s. c  o m*/
            //System.out.println(nl.item(i).toString());
            //System.out.println(((Element)nl.item(i)).getAttribute("className"));
            //System.out.println(((Element)nl.item(i)).getTagName());
        }
    return result;
}

From source file:Main.java

/**
 * Returns the value of an attribute in the first element in a document with a given tag name.
 * This is useful for well structured documents when it is known that there is only
 * one such element and that it is has that attribute.
 * //from w w  w . ja  va 2 s  .c o  m
 * @param document The document to search within.
 * @param tagname The name of the element to access.
 * @param attributename The attribute's name.
 * @return The value of the attribute of the first respective element, or the empty string, if
 * the element of the attribute could not be found.
 */
public static String getAttribute(Document document, String tagname, String attributename) {
    NodeList list = document.getElementsByTagName(tagname);
    if (list.getLength() < 1) {
        return "";
    }
    Element tag = (Element) list.item(0);
    return tag.getAttribute(attributename);
}

From source file:Main.java

public static int getSize(Element el, String tagName) {
    NodeList list = el.getElementsByTagName(tagName);
    return list.getLength();
}

From source file:Main.java

public static Collection<Node> search_nodes_by_name(Node root, String name) {
    Collection<Node> result = new LinkedList<Node>();
    if (root.getNodeName().equals(name))
        result.add(root);//  ww  w .j a  v  a  2 s .  c  om
    NodeList list = root.getChildNodes();
    for (int i = 0; i < list.getLength(); ++i) {
        Node child = list.item(i);
        Collection<Node> ret = search_nodes_by_name(child, name);
        result.addAll(ret);
    }
    return result;
}

From source file:Main.java

/**
 * Recursively removes all text nodes containing whitespace only from a document element. Also
 * trims leading and trailing whitespace from text nodes.
 * //  w  w  w  .j  ava  2  s. co  m
 * @param e The root document element.
 */
public static void removeWhitespaceNodes(Element e) {
    NodeList children = e.getChildNodes();
    for (int i = children.getLength() - 1; i >= 0; i--) {
        Node child = children.item(i);
        if (child instanceof Text && ((Text) child).getData().trim().length() == 0)
            e.removeChild(child);
        else if (child instanceof Text)
            child.setTextContent(((Text) child).getData().trim());
        else if (child instanceof Element)
            removeWhitespaceNodes((Element) child);
    }
}