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 first child Element with the given name; if name is null returns the first element.
 *//*from  w w  w .ja  v a  2s.  co m*/
public static Element firstChildElement(Element element, String childElementName, String attrName,
        String attrValue) {
    if (element == null)
        return null;
    // get the first element with the given name
    Node node = element.getFirstChild();

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

                String value = childElement.getAttribute(attrName);

                if (value != null && value.equals(attrValue)) {
                    return childElement;
                }
            }
        } while ((node = node.getNextSibling()) != null);
    }
    return null;
}

From source file:com.microsoft.tfs.core.clients.build.internal.utils.XamlHelper.java

public static String updateProperties(final String originalXaml, final Properties properties) {
    final ArrayList keys = new ArrayList(properties.keySet());

    final Document document = DOMCreateUtils.parseString(originalXaml);
    final Element root = document.getDocumentElement();

    // first update any properties that we already have
    final NodeList nodes = root.getElementsByTagName("x:String"); //$NON-NLS-1$
    for (int i = 0; i < nodes.getLength(); i++) {
        final Element element = (Element) nodes.item(i);
        final String key = element.getAttribute("x:Key"); //$NON-NLS-1$
        element.getFirstChild().getNodeValue();

        if (properties.containsKey(key)) {
            keys.remove(key);//from   ww w .  j a v a 2 s .com
            element.getFirstChild().setNodeValue(properties.getProperty(key));
        }
    }

    // now add any new properties to the xaml
    for (final Iterator it = keys.iterator(); it.hasNext();) {
        final String key = (String) it.next();
        final Element element = DOMUtils.appendChild(root, "x:String"); //$NON-NLS-1$
        element.setAttributeNS(XAML_NAMESPACE, "x:Key", key); //$NON-NLS-1$
        element.setAttributeNS(XML_NAMESPACE, "xml:space", "preserve"); //$NON-NLS-1$ //$NON-NLS-2$
        DOMUtils.appendText(element, properties.getProperty(key));
    }

    return DOMSerializeUtils.toString(root, DOMSerializeUtils.INDENT).trim();
}

From source file:DOMUtils.java

/**
 * Return the first child element of the given element. Null if no
 * children are found./*from  w  w w  .j  a  v  a 2 s .  c  o  m*/
 *
 * @param elem Element whose child is to be returned
 * @return the first child element.
 */
public static Element getFirstChildElement(Element elem) {
    for (Node n = elem.getFirstChild(); n != null; n = n.getNextSibling()) {
        if (n.getNodeType() == Node.ELEMENT_NODE) {
            return (Element) n;
        }
    }
    return null;
}

From source file:Main.java

public static List<Element> elementsQName(Element element, Set<QName> allowedTagNames) {
    if (element == null || !element.hasChildNodes()) {
        return Collections.emptyList();
    }//from w ww .  j av  a  2s .c  o  m

    List<Element> elements = new ArrayList<Element>();
    for (Node child = element.getFirstChild(); child != null; child = child.getNextSibling()) {
        if (child.getNodeType() == Node.ELEMENT_NODE) {
            Element childElement = (Element) child;
            QName childQName = new QName(childElement.getNamespaceURI(), childElement.getLocalName());
            if (allowedTagNames.contains(childQName)) {
                elements.add(childElement);
            }
        }
    }
    return elements;
}

From source file:com.microsoft.tfs.core.clients.build.internal.utils.XamlHelper.java

public static Properties loadPartial(final String xaml) {
    final Properties properties = new Properties();

    try {/*from  w  ww .  ja  v  a  2 s  . co m*/
        final Document document = DOMCreateUtils.parseString(xaml);
        final Element root = document.getDocumentElement();

        final NodeList nodes = root.getElementsByTagName("x:String"); //$NON-NLS-1$
        for (int i = 0; i < nodes.getLength(); i++) {
            final Element element = (Element) nodes.item(i);
            final String key = element.getAttribute("x:Key"); //$NON-NLS-1$
            final String value = element.getFirstChild().getNodeValue();
            properties.put(key, value);
        }
    } catch (final XMLException e) {
        log.error(
                MessageFormat.format(Messages.getString("XamlHelper.ExceptionParsingProcessParaemtersFormat"), //$NON-NLS-1$
                        xaml), e);
    }

    return properties;
}

From source file:Main.java

public static List<Element> elements(Element element) {
    if (element == null || !element.hasChildNodes()) {
        return Collections.emptyList();
    }//from   w ww  . j a  v a2s.  c  o m

    List<Element> elements = new ArrayList<Element>();
    for (Node child = element.getFirstChild(); child != null; child = child.getNextSibling()) {
        if (child.getNodeType() == Node.ELEMENT_NODE) {
            elements.add((Element) child);
        }
    }
    return elements;
}

From source file:Main.java

private static boolean serializeXmlNode(Node node, Writer writer, boolean includeNode) throws IOException {
    if (node == null) {
        return false;
    }/* w ww  . j av a  2 s .  com*/
    short type = node.getNodeType();
    boolean result = true;
    switch (type) {
    case Node.ATTRIBUTE_NODE: {
        String text = ((Attr) node).getValue();
        writer.write(text);
        break;
    }
    case Node.TEXT_NODE: {
        String text = ((Text) node).getData();
        writer.write(text);
        break;
    }
    case Node.ELEMENT_NODE: {
        Element element = (Element) node;
        if (includeNode) {
            serializeXML(element, writer, false);
        } else {
            Node child = element.getFirstChild();
            while (child != null) {
                serializeXmlNode(child, writer, true);
                child = child.getNextSibling();
            }
        }
        break;
    }
    case Node.DOCUMENT_NODE: {
        Document doc = (Document) node;
        serializeXmlNode(doc.getDocumentElement(), writer, includeNode);
        break;
    }
    default:
        result = false;
        break;
    }
    return result;
}

From source file:Main.java

/**
 * Returns the text content of the provided element as is.  If multiple text
 * DOM nodes are present, they are concatenated together. 
 * /*ww w . ja v  a 2  s .c  o m*/
 * @param element The element that contains the desired text content.
 * @return The text content of the given element.
 * @throws Exception If an exception occurs during the traversal of the DOM
 * objects.
 */
public static String getElementTextData(Element element) throws Exception {
    if (!element.hasChildNodes()) {
        throw new Exception("Element has no children.");
    }

    Node n = element.getFirstChild();

    if ((n.getNodeType() != Node.TEXT_NODE) && (n.getNodeType() != Node.CDATA_SECTION_NODE)) {
        // must be a textual node
        // for now throw an exception, but later need to just skip this module and
        // resume initialization
        throw new Exception("Element child node is not textual.");
    }

    CharacterData value = (CharacterData) n;
    return value.getData();
}

From source file:com.microsoft.exchange.autodiscover.PoxAutodiscoverServiceImpl.java

/**
 * Static utility method to extract text from an XML element
 * @param e - an xml element/*  w  w w  .j ava2  s .  c  o  m*/
 * @return the character datafrom the first child element as a string
 */
private static String getCharacterDataFromElement(Element e) {
    Node child = e.getFirstChild();
    if (child instanceof CharacterData) {
        CharacterData cd = (CharacterData) child;
        return cd.getData();
    }
    return null;
}

From source file:DOMUtils.java

/**
 * Return the first child element of the given element which has the
 * given attribute with the given value.
 *
 * @param elem      the element whose children are to be searched
 * @param attrName  the attrib that must be present
 * @param attrValue the desired value of the attribute
 *
 * @return the first matching child element.
 *//*from   w ww.  ja  va 2  s  .c o  m*/
public static Element findChildElementWithAttribute(Element elem, String attrName, String attrValue) {
    for (Node n = elem.getFirstChild(); n != null; n = n.getNextSibling()) {
        if (n.getNodeType() == Node.ELEMENT_NODE) {
            if (attrValue.equals(DOMUtils.getAttribute((Element) n, attrName))) {
                return (Element) n;
            }
        }
    }
    return null;
}