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

/**
 * Search a child node by name // w w w  .j  a  v  a 2s . c o  m
 * 
 * @param parent   the parent node
 * @param nodeName   the node name for searching
 * @return         Node with the specified name
 * @see            Node
 * @throws Exception
 */
public static Node findChildNodeByName(Node parent, String nodeName) throws Exception {

    Node child = null;
    Node node = parent.getFirstChild();
    while (node != null) {
        if (node.getNodeName().equals(nodeName)) {
            child = node;
            break;
        }
        node = node.getNextSibling();
    }

    return child;
}

From source file:Main.java

/**
 * Gets the date between an opening and closing xml tag. E.g. for
 * <tag>xyz</tag> the string xyz would be returned. If there are multiple
 * nodes with the specified tag name, the data of the first node found will
 * be returned./*from w w w.  ja  va2  s.c o  m*/
 * 
 * @param doc
 *            a document.
 * @param tagname
 *            the name of the tag.
 * @return the data of the tag or <code>null</code> if no node with the
 *         specified tag name could be found.
 */
public static String getTagData(Document doc, String tagname) {
    Node node = getNode(doc, tagname);
    if (node != null) {
        Node child = node.getFirstChild();
        if (child != null) {
            return child.getNodeValue();
        }
    }
    return null;
}

From source file:Main.java

public static String getNodeValue(final Node node) {
    if (node.getNodeType() == Node.ELEMENT_NODE) {
        Node n = node.getFirstChild();
        if (n != null) {
            do {/*  w w w .j  av a  2 s  . com*/
                if (n.getNodeType() == Node.TEXT_NODE) {
                    return n.getNodeValue();
                }
            } while ((n = n.getNextSibling()) != null);
        }
    }

    return node.getNodeValue();
}

From source file:Main.java

/**
 * Removes text nodes that only contains whitespace. The conditions for
 * removing text nodes, besides only containing whitespace, are: If the
 * parent node has at least one child of any of the following types, all
 * whitespace-only text-node children will be removed: - ELEMENT child -
 * CDATA child - COMMENT child/*from www  .  ja  va2 s.  c o m*/
 *
 * The purpose of this is to make the format() method (that use a
 * Transformer for formatting) more consistent regarding indenting and line
 * breaks.
 */
public static void cleanEmptyTextNodes(Node parentNode) {
    boolean removeEmptyTextNodes = false;
    Node childNode = parentNode.getFirstChild();
    while (childNode != null) {
        removeEmptyTextNodes |= checkNodeTypes(childNode);
        childNode = childNode.getNextSibling();
    }

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

From source file:Main.java

/**
 * Returns the text inside the passed XML node.
 * @param node The node to extract from/*from  w  w  w .  ja v a 2 s  .c o m*/
 * @param defaultValue The default value if no text is found
 * @return the extracted text
 */
public static String getNodeTextValue(final Node node, final String defaultValue) {
    try {
        String s = node.getFirstChild().getNodeValue();
        return s == null ? defaultValue : s;
    } catch (Exception ex) {
        return defaultValue;
    }
}

From source file:Main.java

/**
 * Returns the value of given node/* ww w .j  av a  2  s  .c o m*/
 * @param node node which value is to be returned
 * @return the value of given node
 */
public static String getNodeValue(Node node) {
    String retval = "";
    try {
        Node firstChild = node.getFirstChild();
        if (firstChild != null)
            retval = firstChild.getNodeValue();
    } catch (Exception e) {
        return "";
    }
    return retval;
}

From source file:Main.java

public static Vector<Element> getChildElemsByName(final String name, final Node parent) {
    Vector<Element> v = new Vector<Element>();
    Element elem = null;/*from   w w  w .  j  a v  a2 s.  com*/
    for (Node childNode = parent.getFirstChild(); childNode != null; childNode = childNode.getNextSibling()) {
        if (childNode.getNodeType() == Node.ELEMENT_NODE) {
            if (childNode.getNodeName() == name) {
                elem = (Element) childNode;
                v.add(elem);
            }
        }
    }
    return v;
}

From source file:Main.java

/**
 * get the node following the node in parameter
 * // ww w.j  a  va  2 s  .  c  o  m
 * @param n
 *            the n
 * @return the node
 */
public static Node next(Node n) {
    if (n == null) {
        return null;
    }
    Node currentNode = n;
    if (currentNode.getChildNodes().getLength() > 0) {
        currentNode = currentNode.getFirstChild();
    } else {
        if (currentNode.getNextSibling() != null) {
            currentNode = currentNode.getNextSibling();
        } else {
            Node oldCurrentNode = currentNode;
            currentNode = currentNode.getParentNode().getNextSibling();
            while (oldCurrentNode != null && currentNode == null) {
                oldCurrentNode = oldCurrentNode.getParentNode();
                if (oldCurrentNode != null) {
                    currentNode = oldCurrentNode.getNextSibling();
                }
            }
        }
    }
    return currentNode;
}

From source file:Main.java

/**
 * Evaluates the XPath expression in the specified context and returns the found items as a List.
 *
 * @param node       the XML document to evaluate
 * @param expression the compiled XPath expression
 * @return the list of elements found//from  w  ww. ja  va  2  s  . co  m
 */
public static List<String> getListValue(Node node, XPathExpression expression) {
    try {
        NodeList nodeList = (NodeList) expression.evaluate(node, XPathConstants.NODESET);
        List<String> list = new ArrayList<String>(nodeList.getLength());
        for (int i = 0; i < nodeList.getLength(); i++) {
            Node item = nodeList.item(i);
            list.add(item.getFirstChild().getNodeValue());
        }
        return list;
    } catch (XPathExpressionException e) {
        // Try to evaluate in string context:
        String value = getStringValue(node, expression);
        if (value != null) {
            List<String> list = new ArrayList<String>(1);
            list.add(value);
            return list;
        }
        return Collections.emptyList();
    }
}

From source file:Main.java

public static synchronized Node[] getChildNodes(Node node) {
    if (node == null) {
        return null;
    }//from ww  w .j a  va  2s .c  om
    Vector childs = new Vector();
    for (Node n = node.getFirstChild(); n != null; n = n.getNextSibling()) {
        childs.add((Element) n);
    }
    Node[] childNodes = new Element[childs.size()];
    childs.toArray(childNodes);
    return childNodes;
}