Example usage for org.w3c.dom Node getFirstChild

Introduction

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

Prototype

public Node getFirstChild();

Source Link

Document

The first child of this node.

Usage

From source file:Main.java

public static String getTextValue(final Element element, final String tagName) {
    Node n = getNode(element, tagName);
    if (n != null) {
        Node child = n.getFirstChild();
        return (child == null) ? "" : child.getNodeValue();
    }/*w  w w. j  a v  a 2s. c o  m*/
    return null;
}

From source file:Main.java

public static void processNode(Node node) throws Exception {
    if (node.hasChildNodes()) {
        for (Node child = node.getFirstChild(); child != null; child = child.getNextSibling()) {
            processNode(child);/*from   www  . ja v  a 2s  .c om*/
        }
    } else {
        node.setTextContent(" ");
    }
}

From source file:Main.java

/**
 * Gets a node value by name//from w  w w.j  a v a 2s.  c  om
 * 
 * @param parent   the parent node
 * @param nodeName   the node name
 * @return String   the value of the node 
 * @throws Exception
 */
public static String getChildNodeValueByName(Node parent, String nodeName) throws Exception {
    Node node = findChildNodeByName(parent, nodeName);
    if (node != null && node.getFirstChild() != null) {
        return node.getFirstChild().getNodeValue().trim();
    }

    return "";
}

From source file:Main.java

/**
 * Extracts an Integer from a document that consists of an Integer only.
 * /*from ww  w. j av a 2  s . co m*/
 * @param doc
 * @return the Integer
 */
public static int extractInt(Node doc) {
    if (doc == null) {
        return 0;
    }
    return Integer.parseInt(doc.getFirstChild().getTextContent());
}

From source file:Main.java

private static void updateNode(String nodeName, String value) throws Exception {
    File f = new File(System.getProperty("user.dir") + "\\DBConf.xml");
    DocumentBuilderFactory factory = DocumentBuilderFactory.newInstance();
    DocumentBuilder builder = factory.newDocumentBuilder();
    Document doc = builder.parse(f);
    Node tempElem = doc.getElementsByTagName(nodeName).item(0);
    tempElem.getFirstChild().setNodeValue(value);
    doc.getElementsByTagName("conf").item(0).appendChild(tempElem);
    DOMSource source = new DOMSource(doc);
    StreamResult res = new StreamResult(new FileOutputStream(f));
    TransformerFactory.newInstance().newTransformer().transform(source, res);

}

From source file:Main.java

/**
 * Extracts the text from inside the given node
 * @param node The node to extract from// ww w.  ja v a 2s . c  o  m
 * @param defaultValue The value to return if no text is found, or it is empty
 * @return the extracted text
 */
public static String getNodeTextValue(final Node node, final String defaultValue) {
    try {
        String text = node.getFirstChild().getNodeValue();
        if (text == null || text.trim().isEmpty())
            return defaultValue;
        return text.trim();
    } catch (Exception ex) {
        return defaultValue;
    }
}

From source file:Main.java

public static Map<String, String> grabProperty(Map<String, String> map, Element elem) {
    for (Entry<String, String> entry : map.entrySet()) {
        String key = entry.getKey();
        String val = "";
        NodeList nodeList = elem.getElementsByTagName(key);
        if (nodeList == null || nodeList.getLength() <= 0) {
            //entry.setValue("");
        } else {//  w w w. j ava2 s  .c o  m
            Node node = nodeList.item(0);
            if (node != null)
                node = node.getFirstChild();
            if (node != null)
                val = node.getNodeValue();
            //String val=nodeList.item(0).getFirstChild().getNodeValue();
            //entry.setValue("");
        }
        entry.setValue(val);

    }
    return map;
}

From source file:Main.java

public static Set<Node> findChildElementsByTag(Node node, String tag) {
    final Set<Node> result = new LinkedHashSet<>();

    for (Node child = node.getFirstChild(); child != null; child = child.getNextSibling()) {
        if (tag.equals(child.getNodeName())) {
            result.add(child);/*from www  .ja v a 2 s .c om*/
        } else if (child.hasChildNodes()) {
            result.addAll(findChildElementsByTag(child, tag));
        }
    }

    return result;
}

From source file:Main.java

/** Finds and returns the first child node with the given name. */
public static Element getFirstChildElement(Node parent, String elemNames[]) {

    // search for node
    Node child = parent.getFirstChild();
    while (child != null) {
        if (child.getNodeType() == Node.ELEMENT_NODE) {
            for (int i = 0; i < elemNames.length; i++) {
                if (child.getNodeName().equals(elemNames[i])) {
                    return (Element) child;
                }//  w  w  w  .  j a  va  2s  .  c o  m
            }
        }
        child = child.getNextSibling();
    }

    // not found
    return null;

}

From source file:Main.java

/**
 * based on public Java5 javadoc of org.w3c.dom.Node.setTextContent method
 *///from  ww w.j a  v a  2  s  . co  m
public static void setTextContent(Node node, final String text) {
    while (node.hasChildNodes()) {
        node.removeChild(node.getFirstChild());
    }

    if (text != null && text.length() > 0) {
        Node textNode = node.getOwnerDocument().createTextNode(text);
        node.appendChild(textNode);
    }
}