Example usage for org.w3c.dom Element getChildNodes

Introduction

In this page you can find the example usage for org.w3c.dom Element getChildNodes.

Prototype

public NodeList getChildNodes();

Source Link

Document

A NodeList that contains all children of this node.

Usage

From source file:Main.java

/**
 * Determine whether a single child is available of a particular type.
 * @return true if the specified child element is present
 * @throws Exception if the child is present multiple times.
 *///from ww  w  . j a  v a2 s . c  o  m
public static boolean hasChild(Element element, String child) throws Exception {
    NodeList nodes = element.getChildNodes();
    Element ret = null;
    for (int i = 0; i < nodes.getLength(); i++) {
        Node childNode = nodes.item(i);
        if (childNode.getNodeName().equals(child) && childNode.getNodeType() == Node.ELEMENT_NODE) {
            if (ret != null) {
                throw new Exception("Child element '" + child + "' present multiple times");
            } else {
                ret = (Element) childNode;
            }
        }
    }
    return ret != null;
}

From source file:Main.java

public static String getText(Element node) {

    NodeList children = node.getChildNodes();

    if (0 < children.getLength()) {

        String value = children.item(0).getNodeValue();

        if (value != null) {
            return value.trim();
        }// w  w  w  .  j  av a  2  s.c o  m
    }

    return null;
}

From source file:Main.java

public static String[] getChildrenText(Element parentElement, String childrenName) {
    NodeList nl = parentElement.getChildNodes();
    int max = nl.getLength();
    LinkedList<String> list = new LinkedList<String>();
    for (int i = 0; i < max; i++) {
        Node n = nl.item(i);//w ww .  jav  a2s .c o  m
        if (n.getNodeType() == Node.ELEMENT_NODE && n.getNodeName().equals(childrenName)) {
            list.add(getText((Element) n));
        }
    }
    return list.toArray(new String[list.size()]);
}

From source file:Main.java

/**
 * Extracts from the given Element the first child having the given name.
 *
 * @param element/*w ww . ja v  a 2 s .co  m*/
 * @param name
 * @return the first child with the given name or null if none
 */
public static Element firstChild(Element element, String name) {
    NodeList nodeList = element.getChildNodes();
    for (int i = 0; i < nodeList.getLength(); i++) {
        Node current = nodeList.item(i);
        if (current.getNodeType() == Node.ELEMENT_NODE && current.getNodeName().equals(name)) {
            return (org.w3c.dom.Element) current;
        }
    }
    return null;
}

From source file:Main.java

/**
 * Get the child elements of the specified element that match the tags passed in.
 * @param element - the element who's children we wish to search
 * @param tags - the tags to match (empty returns all child elements).
 * @return The child elements that matched
 *///from ww  w.  ja  va 2 s  .c om
public static List<Element> childElements(Element element, String... tags) {
    NodeList nodeList = element.getChildNodes();
    return getElements(nodeList, tags);
}

From source file:Main.java

/**
 * Returns the text-content of the first element in a document with a given tag name.
 * This is useful for well structured documents when it is known that there is only
 * one such element./*  w  w w  . j  av a2 s .com*/
 * 
 * @param document The document to search within.
 * @param tagname The name of the element to retrieve.
 * @return The text content of the element. Text nodes therein are appended for the result, but
 * no further descendants are included. If the element could not be found, the empty string is
 * returned.
 */
public static String getNodeContent(Document document, String tagname) {
    NodeList list = document.getElementsByTagName(tagname);
    if (list.getLength() < 1) {
        //            log.debug("Not found: " + tagname);
        return "";
    }
    Element tag = (Element) list.item(0);
    NodeList content = tag.getChildNodes();
    StringBuffer buf = new StringBuffer();
    for (int i = 0; i < content.getLength(); i++) {
        Node node = content.item(i);
        if (node instanceof Text) {
            buf.append(((Text) node).getNodeValue());
        }
    }
    String textcontent = buf.toString().trim();
    //        log.debug("getNodeContent: " + tagname + " = [" + textcontent + "]");
    return textcontent;
}

From source file:Main.java

/**
 * Get only the XML element children of an XML element.
 *
 * @param parent/*from   ww  w  . j av a 2s.  c  om*/
 *            The parent element to get children from
 * @return The list of children Element of the parent
 */
public static List<Element> getChildElements(Element parent) {
    NodeList childNodes = parent.getChildNodes();
    List<Element> childElements = new ArrayList<>();
    for (int index = 0; index < childNodes.getLength(); index++) {
        if (childNodes.item(index).getNodeType() == Node.ELEMENT_NODE) {
            childElements.add((Element) childNodes.item(index));
        }
    }
    return childElements;
}

From source file:Main.java

/**
 * This method return role name from xml file.
 * @param element String- privilege Element
 * @param elementName -Element name for which value has to be return
 * @return String Role name/* w  ww. j  a  va2  s  .  c  om*/
 */
public static String getElementValue(Element element, String elementName) {
    String roleName = "";
    NodeList elementList = element.getElementsByTagName(elementName);
    Element ele = (Element) elementList.item(0);
    NodeList valueNodeList = ele.getChildNodes();
    Node node = ((Node) valueNodeList.item(0));
    if (node != null) {
        roleName = node.getNodeValue();
    }
    return roleName;
}

From source file:Main.java

public static String findNodeValue(Element firstElement, String name) {
    String nodeValue = null;/*  w  w  w.  jav a2s .  co m*/
    NodeList firstNameList = firstElement.getElementsByTagName(name);
    Element firstNameElement = (Element) firstNameList.item(0);

    NodeList textFNList = firstNameElement.getChildNodes();

    if (textFNList.getLength() > 0) {
        nodeValue = (textFNList.item(0)).getNodeValue();
    }
    return nodeValue;
}

From source file:Main.java

public static Element getLastChild(Element parent, String name) {
    Element child = null;/*  ww  w  .j a  v  a 2  s  .c  o  m*/
    NodeList nl = parent.getChildNodes();
    for (int i = 0; i < nl.getLength(); i++) {
        Node n = nl.item(i);
        if (n.getNodeType() == Node.ELEMENT_NODE && n.getNodeName().equals(name)) {
            child = (Element) n;
        }
    }
    return child;
}