Example usage for org.w3c.dom Element getElementsByTagName

Introduction

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

Prototype

public NodeList getElementsByTagName(String name);

Source Link

Document

Returns a NodeList of all descendant Elements with a given tag name, in document order.

Usage

From source file:Utils.java

public static Element findContainerElseCreate(Document document, Element parent, String child) {
    NodeList nl = parent.getElementsByTagName(child);
    if (nl.getLength() == 0) {
        parent.appendChild(document.createElement(child));
    }/*from   w ww . j  av a2  s .c  om*/
    return (Element) parent.getElementsByTagName(child).item(0);
}

From source file:Main.java

public static String parseString(Element xmlElement, String tagName) {
    NodeList items = xmlElement.getElementsByTagName(tagName);
    if (items.getLength() == 0)
        return null;
    else// ww w  . ja  v  a  2 s.c o m
        return items.item(0).getTextContent();
}

From source file:Main.java

/**
 * Check if the given Element contains child nodes that match with the given
 * child name./* w w w  .  ja  va2  s  . c om*/
 * 
 * @param element
 * @param name The name of the child tag to match on. The special value "*"
 *        matches all tags.
 * @return
 */
public static boolean hasChildNodes(Element element, String name) {
    NodeList elements = element.getElementsByTagName(name);
    return elements.getLength() > 0;
}

From source file:Main.java

/**
 * get the first element in the parent element that's named name or null if no such element exists
 *//*  w ww. j a v a 2 s  .c om*/
public static Element getFirstElement(Element parent, String name) {
    NodeList list = parent.getElementsByTagName(name);

    Node node = list.item(0);
    if (node == null) {
        //throw new RuntimeException("Malformed XML: No such node: " + name);
        return null;
    }

    if (!isElement(node)) {
        throw new RuntimeException("XML Parsing error: " + name + " is not an Element");
    }

    return (Element) node;
}

From source file:Main.java

public static String getElementText(final Element eElement, final String name) {
    NodeList nodes = eElement.getElementsByTagName(name);
    if (nodes == null) {
        return null;
    }// w  ww .  ja va2 s. c  o m
    Node node = nodes.item(0);
    if (node == null) {
        return null;
    }
    String value = node.getTextContent();
    return (value != null) ? value.trim() : null;
}

From source file:Main.java

/**
 * Gets an element value/* w  w w. j a  v a2  s .  c o m*/
 * 
 * @param valueTag
 * @param fromElement
 * @return
 */
public static String getTagValue(String valueTag, Element fromElement) {
    NodeList nodeList = fromElement.getElementsByTagName(valueTag);
    if (nodeList != null && nodeList.getLength() > 0) {
        NodeList childList = nodeList.item(0).getChildNodes();
        if (childList != null && childList.getLength() > 0) {
            Node node = (Node) childList.item(0);
            return node.getNodeValue();
        }
    }
    return null;
}

From source file:Main.java

public static final Element getElementByTagName(Element parent, String name) throws IOException {
    final NodeList list = parent.getElementsByTagName(name);
    if (list.getLength() == 1) {
        return (Element) list.item(0);
    } else {/*from   w  w w .  j  a va  2  s . c om*/
        throw new IOException(String.format("Expected one child element named \"%s\"", name));
    }
}

From source file:Main.java

public static String extractValue(Element e, String name) {
    NodeList nl = e.getElementsByTagName(name);

    StringBuffer value = new StringBuffer();

    if (nl.getLength() > 0) {
        NodeList children = nl.item(0).getChildNodes();
        for (int i = 0; i < children.getLength(); i++) {
            if (children.item(i) instanceof Text) {
                value.append(((Text) children.item(i)).getData());
            }//  w  w w .  j av a  2 s. c  o  m
        }
        return value.toString();
    } else {
        return "";
    }
}

From source file:Main.java

private static void makeNamelist(Document doc) {
    String names = null;//from  w w  w.j  a  va  2  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:Utils.java

public static Element findElementOrContainer(Document document, Element parent, String element) {
    NodeList nl = parent.getElementsByTagName(element);
    if (nl.getLength() == 0) {
        return null;
    }/*from   w  w w . jav a  2  s  .  co m*/
    return (Element) nl.item(0);
}