Example usage for org.w3c.dom Element getFirstChild

Introduction

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

Prototype

public Node getFirstChild();

Source Link

Document

The first child of this node.

Usage

From source file:Main.java

/**
 * Return the text (node value) of the first node under this, works best if
 * normalized./*from w w w . j a v  a2 s.c om*/
 */
public static String elementValue(Element element) {
    if (element == null)
        return null;
    // make sure we get all the text there...
    element.normalize();
    Node textNode = element.getFirstChild();

    if (textNode == null)
        return null;
    // should be of type text
    return textNode.getNodeValue();
}

From source file:Main.java

public static List<Element> elements(Element root, String namepaceUri, String localName) {
    List<Element> L = new ArrayList<Element>();
    if (root == null)
        return L;
    for (Node n1 = root.getFirstChild(); n1 != null; n1 = n1.getNextSibling()) {
        if (n1.getNodeType() != Node.ELEMENT_NODE)
            continue;
        Element e2 = Element.class.cast(n1);
        if (namepaceUri.equals(e2.getNamespaceURI()) && e2.getLocalName().equals(localName)) {
            L.add(e2);//from ww  w .  j a va 2s .  c o m
        }
    }
    return L;
}

From source file:DOMEdit.java

private static void makeNamelist(Document doc) {
        String names = null;/*from w ww .ja  va2  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

/**
 * Return a List of Element objects that have the given name and are immediate children of the
 * given element; if name is null, all child elements will be included.
 *//*from w  w  w  . j a  v a2 s  .  co  m*/
public static List<Element> childElementList(Element element, String childElementName) {
    if (element == null)
        return null;

    List<Element> elements = new LinkedList<Element>();
    Node node = element.getFirstChild();

    if (node != null) {
        do {
            if (node.getNodeType() == Node.ELEMENT_NODE
                    && (childElementName == null || childElementName.equals(node.getNodeName()))) {
                Element childElement = (Element) node;

                elements.add(childElement);
            }
        } while ((node = node.getNextSibling()) != null);
    }
    return elements;
}

From source file:Main.java

/**
 * Locates the element defined by the XPath expression in the XML file and replaces the child text with the passed value.
 * @param fileName The XML file to update.
 * @param xPathExpression An XPath expression that locates the element to update.
 * @param value The value to update the attribute to.
 */// w  ww . jav  a  2  s. c  o  m
public static void updateElementValueInXMLFile(String fileName, String xPathExpression, String value) {
    try {
        Document document = parseXML(new File(fileName));
        XPath xpath = XPathFactory.newInstance().newXPath();
        XPathExpression xpathExpression = xpath.compile(xPathExpression);
        Element element = (Element) xpathExpression.evaluate(document, NODE);
        element.getFirstChild().setNodeValue(value);
        writeElement(document.getDocumentElement(), fileName);
    } catch (Exception e) {
        throw new RuntimeException("Failed to extract element from:" + fileName, e);
    }
}

From source file:Main.java

public static void findByID(Document doc, String idName) {
        Element name = doc.getElementById(idName);
        if (name == null) {
            System.out.println("There is no element with the ID " + idName);
        } else {/*from  www .ja v a 2 s .  c  o  m*/
            Text text = (Text) name.getFirstChild();
            System.out.println("The ID " + idName + " locates the name " + text.getData());
        }
    }

From source file:Main.java

/**
 * Returns the string value specified with the given tag name in the specified element. Assumes
 * that there is only one tag of the speicified name in the element.
 * //from   w w  w .  j a  va  2s . c  o m
 * @param element
 * @param tagName
 * @return the string value specified with the given tag name in the specified element
 */
public static String getSingleTagValue(Element element, String tagName) {
    NodeList nodes = element.getElementsByTagName(tagName);
    if (!hasUniqueNode(nodes)) {
        return null;
    }

    Element e = (Element) nodes.item(0);
    if (e == null) {
        return null;
    }

    return e.getFirstChild().getNodeValue();
}

From source file:Main.java

public static String getElementText(Element ele) {

    // is there anything to do?
    if (ele == null) {
        return null;
    }//from  ww w  .j a v  a2s.  com
    // get children text
    Node child = ele.getFirstChild();
    if (child != null) {
        short type = child.getNodeType();
        if (type == Node.TEXT_NODE) {
            return child.getNodeValue();
        }
    }
    // return text value
    return null;
}

From source file:Main.java

public static synchronized Element getChildElement(Element element, String childName) {
    if (element == null || childName == null || childName.length() == 0) {
        return null;
    }/*from www .  j a v  a 2 s .c om*/
    Element childs = null;
    for (Node node = element.getFirstChild(); node != null; node = node.getNextSibling()) {
        if (node instanceof Element) {
            if (node.getNodeName().equals(childName)) {
                childs = (Element) node;
                break;
            }
        }
    }
    return childs;
}

From source file:Main.java

/**
 * Returns the string value specified with the given tag name in the specified XML text. Assumes
 * that there is only one tag of the speicified name in the XML text.
 * /*from w w w  .j  av  a  2s.com*/
 * @param xmlText
 * @param tagName
 * @return the string value specified with the given tag name in the specified XML text
 */
public static String getSingleTagValue(String xmlText, String tagName) {
    Element e = getSingleElement(xmlText, tagName);
    if (e == null) {
        return null;
    }

    return e.getFirstChild().getNodeValue();
}