Example usage for org.w3c.dom Element getElementsByTagName

Introduction

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

Prototype

public NodeList getElementsByTagName(String name);

Source Link

Document

Returns a NodeList of all descendant Elements with a given tag name, in document order.

Usage

From source file:Main.java

public static boolean doesElementContainChildren(Element parent, String... childNames) {
    boolean missingChild = false;
    for (String childName : childNames) {
        if (parent.getElementsByTagName(childName).getLength() == 0) {
            missingChild = true;//from w  ww. j  a v a  2 s  .c o  m
        }
    }
    if (missingChild)
        return false;
    else
        return true;
}

From source file:Main.java

public static String getCharacterDataFromElementWithKey(final Element element, final String key) {
    String result = null;//  w  ww . j a  v a  2  s .c  o  m
    if (element != null) {
        final NodeList jobNodeList = element.getElementsByTagName(key);

        final Node node = jobNodeList.item(0);
        if (node != null) {
            final CharacterData characterData = (CharacterData) jobNodeList.item(0).getChildNodes().item(0);
            if (characterData != null) {
                result = characterData.getNodeValue();
            }
        }
    }
    return result;
}

From source file:Main.java

public static List<Element> getChildElements(Element parent, String tagName) {
    if (null == parent)
        return null;
    NodeList nodes = parent.getElementsByTagName(tagName);
    List<Element> elements = new ArrayList<Element>();

    for (int i = 0; i < nodes.getLength(); i++) {
        Node node = nodes.item(i);
        if (node.getParentNode() == parent)
            elements.add((Element) node);
    }/*w  ww  .  j  a va  2  s.  c  om*/

    return elements;
}

From source file:Main.java

/**
 * Method to return a list of named Elements with a specific attribute value.
 * http://www.java2s.com/Code/Java/XML/ReturnalistofnamedElementswithaspecificattributevalue.htm
 * @param element the containing Element.
 * @param name the tag name.//from   w  w w  .  j  a v a 2  s  . c  om
 * @param attribute Attribute name.
 * @param value Attribute value.
 * @param returnFirst Return only the first matching value?.
 * @return List of matching elements.
 */
public static List<Node> selectElementsByAttributeValue(Element element, String name, String attribute,
        String value, boolean returnFirst) {
    NodeList elementList = element.getElementsByTagName(name);
    List<Node> resultList = new ArrayList<>();
    for (int i = 0; i < elementList.getLength(); i++) {
        if (getAttribute((Element) elementList.item(i), attribute).equals(value)) {
            resultList.add(elementList.item(i));
            if (returnFirst) {
                break;
            }
        }
    }
    return resultList;
}

From source file:Main.java

public static String SearchForElementText(Element element, String name) {
    if (element != null && name != null && !name.isEmpty()) {
        NodeList nodes = element.getElementsByTagName(name);

        if (nodes != null && nodes.getLength() > 0) {
            return nodes.item(0).getTextContent();
        }/*from ww w  .j  av a  2  s  .  c  o m*/
    }

    return null;
}

From source file:Main.java

public static Element getElementByTagName(Element current, String name, String namespace) {

    NodeList elements = null;//from  w ww  .j  ava 2 s  .c  o m

    if (namespace == null)
        elements = current.getElementsByTagName(name);
    else
        elements = current.getElementsByTagNameNS(namespace, name);

    if (elements == null)
        return null;

    if (elements.getLength() != 1)
        return null;

    return (Element) elements.item(0);

}

From source file:Main.java

/**
 * Get the specified element from a parent element.
 * /*www  .j  a v  a 2 s  .  c o m*/
 * @param elementName the element tag to serach for.
 * @param parentElement the parent element.
 * @return an element given the name and the parent element.
 */
public static Element getElement(String elementName, Element parentElement) {
    Element returnElement = null;
    NodeList nl;

    // Get the list of elements
    if ((nl = parentElement.getElementsByTagName(elementName)) != null) {
        // Return first element found
        returnElement = (Element) nl.item(0);
    }

    // Return element
    return returnElement;
}

From source file:Main.java

/**
 * Get the first child element with the given name
 *
 * @param parentElement//  www .j av a  2s .  com
 * @param name
 * @return
 */
public static Node getChildElement(Element parentElement, String name, String... filters) {
    final NodeList nodeList = parentElement.getElementsByTagName(name);

    if (nodeList.getLength() > 0) {
        for (int i = 0; i < nodeList.getLength(); i++) {
            final Node node = (Node) nodeList.item(i);

            if (node instanceof Element && matchesFilters((Element) node, filters)) {
                return node;
            } else if (node instanceof Attr) {
                return node;
            }
        }
    }
    return null;
}

From source file:Main.java

/**
 * Returns the value of given tagName under given element.
 * //www  .  ja  va2 s .  c o  m
 * E.g.
 * <ele>
 *    <tagName>MyValue</tagName>
 * </ele>
 * 
 * MyValue is returned in the above case.
 * 
 * @param ele xml element under which the tagName should be found
 * @param tagName tag name of the tag which value is read
 * @return the value of given tagName under given element.
 */
public static String getTextValue(Element ele, String tagName) {
    String textVal = null;

    try {
        NodeList nl = ele.getElementsByTagName(tagName);
        if (nl != null && nl.getLength() > 0) {
            Element el = (Element) nl.item(0);
            Node firstChild = el.getFirstChild();
            if (firstChild != null)
                textVal = firstChild.getNodeValue();
        }
    } catch (Exception e) {
        e.printStackTrace();
    }

    return textVal;
}

From source file:Main.java

/**
 * This method takes Element object and String tagName as argument and
 * returns the value of the first child node it gets. If it does not find
 * any node it will return null.//from   ww w . j  a v a2  s  .c  o m
 * 
 * @param element
 *            Element object
 * @param tagName
 *            Name of the tag.
 * @return the value of the first occurance of <code>tagName</code> tag in
 *         <code>element</code> object. Returns null, if doesn't find any.
 */
public static String getTagValue(Element element, String tagName) {
    if (element == null) {
        return null;
    }
    NodeList nodes = element.getElementsByTagName(tagName);
    if (nodes == null || nodes.getLength() <= 0) {
        return null;
    }
    return getTagValue(nodes.item(0));
}