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

private static void removeEmptyTextNodes(Node parentNode) {
    Node childNode = parentNode.getFirstChild();
    while (childNode != null) {
        // grab the "nextSibling" before the child node is removed
        Node nextChild = childNode.getNextSibling();

        short nodeType = childNode.getNodeType();
        if (nodeType == Node.TEXT_NODE) {
            boolean containsOnlyWhitespace = childNode.getNodeValue().trim().isEmpty();
            if (containsOnlyWhitespace) {
                parentNode.removeChild(childNode);
            }/*from  ww w  .ja  v a2 s .c o  m*/
        }
        childNode = nextChild;
    }
}

From source file:Main.java

static String getNodeValue(final Node node) {
    if (node != null && node.getFirstChild() != null && node.getFirstChild().getNodeValue() != null) {
        return node.getFirstChild().getNodeValue().trim();
    }/*from   www  .  j  a  v  a 2 s .com*/
    return null;
}

From source file:Main.java

public static String getTextElementValue(String elementName, Element parentElement, boolean showEmptyAsNull) {
    ArrayList<Node> childNodesWithTagName = getChildNodesWithTagName(elementName, parentElement);

    if (childNodesWithTagName.size() > 0) {
        Node childNode = childNodesWithTagName.get(0);
        String text = childNode.getFirstChild().getNodeValue().trim();

        return text.equals("") && showEmptyAsNull ? null : text;
    }/*w  w w  . j  a  va2  s.c  om*/

    return null;
}

From source file:Main.java

/**
 * Returns all direct simple text value subnodes and their values for a dataNode
 *
 * Example XML: <dataNode> <a>1</a> <b>2</b> <c>3</c> </dataNode> Returns: a=1, b=2, c=3.
 *
 * @param dataNode/*from  w ww.ja v a 2 s  . c  o m*/
 *            the data node
 * @return the simple values of node
 */
public static Map<String, String> getSimpleValuesOfNode(Node dataNode) {
    Map<String, String> returnMap = new HashMap<String, String>();

    NodeList list = dataNode.getChildNodes();
    for (int i = 0; i < list.getLength(); i++) {
        Node node = list.item(i);
        if (node.getFirstChild() != null && node.getFirstChild().getNodeType() == Node.TEXT_NODE
                && node.getChildNodes().getLength() == 1) {
            returnMap.put(node.getNodeName(), node.getFirstChild().getNodeValue());
        }
    }

    return returnMap;
}

From source file:Main.java

/**
 * sets the value of an Element in the Xml Document.
 * finds the first occurance of the element and sets its value.
 * @param root the root Element./*w w w  .j a  v  a  2 s .c  o m*/
 * @param elemName the name of the element to search for.
 * @return String the element value or null if not found.
 */
public static void setNodeValue(Document doc, String elemName, String value) {
    Element root = doc.getDocumentElement();
    NodeList nl = root.getElementsByTagName(elemName);
    if (null != nl) {
        Node n = nl.item(0);
        if (null != n) {
            n.getFirstChild().setNodeValue(value);
        } else {
            addNode(doc, elemName, value);
        }
    } else {
        addNode(doc, elemName, value);
    }

}

From source file:Main.java

private static void cleanEmptyTextNodes(Node parentNode) {
    boolean removeEmptyTextNodes = false;
    Node childNode = parentNode.getFirstChild();
    while (childNode != null) {
        removeEmptyTextNodes |= checkNodeTypes(childNode);
        childNode = childNode.getNextSibling();
    }//  w  ww .  jav a2s.  c o m

    if (removeEmptyTextNodes) {
        removeEmptyTextNodes(parentNode);
    }
}

From source file:Main.java

/**
 * Extracts a Long from a document that consists of a Long only.
 * //from   w  w w.j  av  a  2  s.c o  m
 * @param doc
 * @return the Long
 */
public static Long extractLong(Node doc) {
    if (doc == null) {
        return 0l;
    }
    return Long.parseLong(doc.getFirstChild().getTextContent());
}

From source file:Main.java

public static String getTagValue(Element root, String tagName) {
    String returnString = "";
    NodeList list = root.getElementsByTagName(tagName);
    for (int loop = 0; loop < list.getLength(); loop++) {
        Node node = list.item(loop);
        if (node != null) {
            Node child = node.getFirstChild();
            if ((child != null) && (child.getNodeValue() != null)) {
                return child.getNodeValue();
            }//from   w w w  .ja  v a  2  s.  c om
        }
    }
    return returnString;
}

From source file:Main.java

public static Set<Node> getChildrenElements(Node node) {
    final Set<Node> result = new LinkedHashSet<>();

    for (Node child = node.getFirstChild(); child != null; child = child.getNextSibling()) {
        if (child.getNodeType() != Node.TEXT_NODE) {
            result.add(child);/*from w  ww.  j  a  va2 s.  com*/
        }
    }

    return result;
}

From source file:Main.java

/**
 * A method to get the value of desire node from xml document
 * @param Node parent, xml's node object to get
 * @return String , value from provided node
 *///from www  .j a v a 2  s.com
static public String getNodeValue(Node parent) {
    String ret = "";

    Node n = parent.getFirstChild();
    while (n != null) {
        if (n.getNodeType() == Node.TEXT_NODE) {
            try {
                ret = n.getNodeValue().trim();
            } catch (NullPointerException ex) {
                ret = "";
                break;
            }
        }
        n = n.getNextSibling();
    }
    return (ret);
}