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 Element getFirstChildElement(final Node parent) {
    if (parent != null) {
        Node tmpResult = parent.getFirstChild();

        if (tmpResult != null) {
            if (Node.ELEMENT_NODE == tmpResult.getNodeType()) {
                return (Element) tmpResult;
            } else {
                return getNextSiblingElement(tmpResult);
            }// w w  w .jav  a  2 s  .c o m
        }
    }

    return null;
}

From source file:Main.java

/**
 * Gets a node value./*from ww w . j a v  a 2  s.  co m*/
 *
 * @param pNode
 *            the p node
 * @return the node value
 */
public static String getNodeValue(Node pNode) {
    if (pNode.getNodeValue() != null) {
        return pNode.getNodeValue();
    } else if (pNode.getFirstChild() != null) {
        return getNodeValue(pNode.getFirstChild());
    } else {
        return null;
    }
}

From source file:Main.java

/**
 * Extracts a {@code Map} of header tag to value from the header node.
 *
 * @param headerNode the header node// w  w w . j  a v a  2 s . c  o  m
 * @return a {@code Map} of header tag to value from the header node.
 */
public static Map<String, String> extractHeaderMap(Node headerNode) {
    Map<String, String> headerMap = new HashMap<String, String>();
    for (int i = 0; i < headerNode.getChildNodes().getLength(); i++) {
        Node headerChildNode = headerNode.getChildNodes().item(i);
        headerMap.put(headerChildNode.getLocalName(), headerChildNode.getFirstChild().getNodeValue());
    }
    return headerMap;
}

From source file:Main.java

/**
 * Method to remove all children of g:options - element
 * /*from   w  w  w  .j av a  2  s  .com*/
 * @param doc document with children  g:options
 * @return document without children g:options
 */
public static Document removeAllOptions(Document doc) {
    NodeList nodes = doc.getElementsByTagName("g:options");
    Node node = nodes.item(0);
    while (node.hasChildNodes())
        node.removeChild(node.getFirstChild());
    return doc;
}

From source file:Main.java

/**
 * Converts a node to a double/* w  w w.jav  a 2  s  . c o  m*/
 * 
 * @param node
 *            The node to be parsed
 * @return The obtained value
 */
protected static Double nodeToDouble(Node node) {
    Double returnValue = null;
    try {
        String nodeValue = node.getFirstChild().getNodeValue();
        nodeValue = nodeValue.trim();
        returnValue = nf.parse(nodeValue).doubleValue();
    } catch (ParseException e) {
        // Should never happen
        e.printStackTrace();
    }

    return returnValue;
}

From source file:Main.java

/**
 * Get the next node in a depth first preorder traversal.
 *
 * <ul>/*from  www  .  j av a2  s.c om*/
 * <li>If the node has a child, return the child
 * <li>Else if the node has a following sibling, return that sibling
 * <li>Else if the node has a following uncle, return that uncle
 * </ul>
 *
 * @param node the current node
 * @return the next node in the preorder traversal
 */
public static Node getNext(Node node) {
    if (node == null)
        return null;

    if (node.getFirstChild() != null)
        return node.getFirstChild();

    for (; node != null; node = node.getParentNode()) {
        if (node.getNextSibling() != null)
            return node.getNextSibling();
    }

    return null;
}

From source file:Main.java

public static Node findSubElement(Node parent, String localName) {
    if (parent == null) {
        return null;
    }// w w w  . j  a v  a  2  s.  com
    Node child = parent.getFirstChild();
    while (child != null) {
        if ((child.getNodeType() == Node.ELEMENT_NODE) && (child.getLocalName().equals(localName))) {
            return child;
        }
        child = child.getNextSibling();
    }
    return null;
}

From source file:Main.java

/**
 * Get the value of specified node./*  w  w  w . j  ava2  s.c  o m*/
 * 
 * @param node
 *          the node
 * @return the value of the node
 */
public static String getNodeValue(Node node) {
    if (null == node) {
        return null;
    }
    if (null == node.getFirstChild()) {
        return null;
    }
    return node.getFirstChild().getNodeValue();
}

From source file:Main.java

public static void setByPath(Node doc, String path, String value) {
    Node node = getNodeByPath(doc, path);
    if (node.hasChildNodes() && node.getFirstChild().getNodeType() == Node.TEXT_NODE) {
        node.getFirstChild().setTextContent(value);
    } else {/* w w w .  ja va  2s  .c o  m*/
        node.setNodeValue(value);
    }
}

From source file:Main.java

/** Finds and returns the first child node with the given qualified name. */
public static Element getFirstChildElementNS(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++) {
                String uri = child.getNamespaceURI();
                if (uri != null && uri.equals(elemNames[i][0])
                        && child.getLocalName().equals(elemNames[i][1])) {
                    return (Element) child;
                }/*w w w  .j ava2s .c  o  m*/
            }
        }
        child = child.getNextSibling();
    }

    // not found
    return null;

}