Example usage for org.jdom2.xpath XPath selectSingleNode

Introduction

In this page you can find the example usage for org.jdom2.xpath XPath selectSingleNode.

Prototype

abstract public Object selectSingleNode(Object context) throws JDOMException;

Source Link

Document

Evaluates the wrapped XPath expression and returns the first entry in the list of selected nodes (or atomics).

Usage

From source file:com.ardor3d.extension.model.collada.jdom.ColladaDOMUtil.java

License:Open Source License

/**
 * Select nodes through an XPath query and returns the first hit
 * /*from  w  w  w  .ja v a  2s .  c  o  m*/
 * @param element
 *            root element to start search on
 * @param query
 *            XPath expression
 * @return the first selected item, which may be of types: {@link Element}, {@link Attribute}, {@link Text},
 *         {@link CDATA}, {@link Comment}, {@link ProcessingInstruction}, Boolean, Double, String, or
 *         <code>null</code> if no item was selected.
 */
public Object selectSingleNode(final Element element, final String query) {
    final XPath xPathExpression = getXPathExpression(query);

    try {
        return xPathExpression.selectSingleNode(element);
    } catch (final JDOMException e) {
        e.printStackTrace();
    }
    return null;
}

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From source file:org.jahia.utils.osgi.parsers.AbstractXmlFileParser.java

License:Open Source License

/**
 * Utility method to retrieve an XML element using an XPath expression. Note that this method is
 * namespace aware and will require you to use the "xp" prefix in your XPath queries. For example, an XPath query
 * for a Spring XML configuration will look like this :
 * /xp:beans/xp:bean[@id="FileListSync"]/xp:property[@name="syncUrl"]
 * Currently there is no way to rename the prefix.
 *
 * @param scopeElement    the scope in which to execute the XPath query
 * @param xPathExpression the XPath query to select the element we wish to retrieve. In the case where multiple
 *                        elements match, only the first one will be returned.
 * @return the first element that matches the XPath expression, or null if no element matches.
 * @throws JDOMException raised if there was a problem navigating the JDOM structure.
 *//*ww  w.  j  a  v a2s  .c  o m*/
public static Element getElement(Element scopeElement, String xPathExpression) throws JDOMException {
    XPath xPath = XPath.newInstance(xPathExpression);
    String namespaceURI = scopeElement.getDocument().getRootElement().getNamespaceURI();
    if ((namespaceURI != null) && (!"".equals(namespaceURI))) {
        xPath.addNamespace("xp", namespaceURI);
    }
    for (Namespace additionalNamespace : (List<Namespace>) scopeElement.getDocument().getRootElement()
            .getAdditionalNamespaces()) {
        xPath.addNamespace(additionalNamespace);
    }
    return (Element) xPath.selectSingleNode(scopeElement);
}

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