Example usage for javax.xml.xpath XPathFactory newInstance

List of usage examples for javax.xml.xpath XPathFactory newInstance

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Introduction

In this page you can find the example usage for javax.xml.xpath XPathFactory newInstance.

Prototype

public static XPathFactory newInstance()

Source Link

Document

Get a new XPathFactory instance using the default object model, #DEFAULT_OBJECT_MODEL_URI , the W3C DOM.

This method is functionally equivalent to:

 newInstance(DEFAULT_OBJECT_MODEL_URI)

Since the implementation for the W3C DOM is always available, this method will never fail.

Usage

From source file:Main.java

private static XPath createXpath() {
    XPathFactory xpathFactory = XPathFactory.newInstance();
    XPath xpath = xpathFactory.newXPath();
    return xpath;
}

From source file:Main.java

private static XPathExpression compile(String path) {
    XPathFactory xPathfactory = XPathFactory.newInstance();
    XPath xpath = xPathfactory.newXPath();
    try {// w  ww . ja  va  2  s . c  o m
        return xpath.compile(path);
    } catch (Exception e) {
        throw new RuntimeException(e);
    }
}

From source file:com.wso2telco.identity.application.authentication.endpoint.util.ReadMobileConnectConfig.java

public static Map<String, String> query(String XpathExpression) {

    Map<String, String> ConfigfileAttributes = new Hashtable<String, String>();

    // standard for reading an XML file
    DocumentBuilderFactory factory = DocumentBuilderFactory.newInstance();
    factory.setNamespaceAware(true);/*w  w  w.ja v a 2  s .c om*/
    DocumentBuilder builder;
    Document doc = null;
    XPathExpression expr = null;
    try {
        builder = factory.newDocumentBuilder();
        doc = builder.parse(CarbonUtils.getCarbonConfigDirPath() + File.separator + "mobile-connect.xml");

        // create an XPathFactory
        XPathFactory xFactory = XPathFactory.newInstance();

        // create an XPath object
        XPath xpath = xFactory.newXPath();

        // compile the XPath expression
        expr = xpath.compile("//" + XpathExpression + "/*");
        // run the query and get a nodeset
        Object result = expr.evaluate(doc, XPathConstants.NODESET);
        //        // cast the result to a DOM NodeList
        NodeList nodes = (NodeList) result;

        for (int i = 0; i < nodes.getLength(); i++) {
            ConfigfileAttributes.put(nodes.item(i).getNodeName(), nodes.item(i).getTextContent());
        }
    } catch (SAXException e) {
        log.error(e.getMessage());
    } catch (IOException e) {
        log.error(e.getMessage());
    } catch (ParserConfigurationException e) {
        log.error(e.getMessage());
    } catch (XPathExpressionException e) {
        log.error(e.getMessage());
    }

    return ConfigfileAttributes;
}

From source file:com.thinkbiganalytics.feedmgr.nifi.NifiTemplateParser.java

public static String updateTemplateName(String nifiTemplate, String newName) throws Exception {

    XPathFactory xpathFactory = XPathFactory.newInstance();
    XPath xpath = xpathFactory.newXPath();
    Document doc = stringToDocument(nifiTemplate);

    InputSource source = new InputSource(new StringReader(nifiTemplate));

    Element element = (Element) xpath.compile("//template/name").evaluate(doc, XPathConstants.NODE);

    element.setTextContent(newName);/*from   ww  w.j  a  va  2s.c  o  m*/
    return documentToString(doc);
}

From source file:Main.java

/**
 * Evaluates the XPath expression against the <code>xml</code> and returns the selected nodes.
 * /*from www . j ava 2s . co  m*/
 * @param expression Expression to evaluate.
 * @param xml The xml to query.
 * @return The selected nodes.
 * @throws XPathExpressionException If an error occurs evaluating the expression.
 */
public static NodeList getNodes(final String expression, final String xml) throws XPathExpressionException {
    final InputSource source = new InputSource(new StringReader(xml));
    final XPathFactory factory = XPathFactory.newInstance();
    final XPath xpath = factory.newXPath();
    return (NodeList) xpath.evaluate(expression, source, XPathConstants.NODESET);
}

From source file:ch.entwine.weblounge.common.impl.util.xml.XPathHelper.java

/**
 * Returns the query result or <code>null</code>.
 * <p>//www  .j  av  a2s . com
 * <b>Note:</b> This signature creates a new <code>XPath</code> processor on
 * every call, which is probably fine for testing but not favorable when it
 * comes to production use, since creating an <code>XPath</code> processor is
 * resource intensive.
 * 
 * @param node
 *          the context node
 * @param xpath
 *          the xpath expression
 * 
 * @return the selected string or <code>null</code> if the query didn't yield
 *         a result
 */
public static String valueOf(Node node, String xpathExpression) {
    XPath xpath = XPathFactory.newInstance().newXPath();
    return valueOf(node, xpathExpression, null, xpath);
}

From source file:com.orange.ngsi.model.UpdateContextModelTest.java

@Test
public void serializationXML() throws IOException, URISyntaxException, XPathExpressionException {

    String xml = xmlmapper.writeValueAsString(createUpdateContextTempSensor(0));

    String xpathExpr = "/updateContextRequest/contextElementList/contextElement[1]/entityId/id";
    XPath xPath = XPathFactory.newInstance().newXPath();
    String value = xPath.evaluate(xpathExpr, new InputSource(new StringReader(xml)));
    assertEquals("S1", value);
}

From source file:ch.entwine.weblounge.common.impl.testing.IntegrationTestParser.java

/**
 * Initializes an integration test object from the given test definition.
 * <p>// www . j av  a2  s  .  co  m
 * To speed things up, you might consider using the second signature that uses
 * an existing <code>XPath</code> instance instead of creating a new one.
 * 
 * @param config
 *          the test node
 * @throws IllegalStateException
 *           if the test cannot be parsed
 * @see #fromXml(Node, XPath)
 */
public static IntegrationTestGroup fromXml(Node config) throws IllegalStateException {
    XPath xpath = XPathFactory.newInstance().newXPath();

    // Define the xml namespace
    XPathNamespaceContext nsCtx = new XPathNamespaceContext(false);
    nsCtx.defineNamespaceURI("m", TEST_XMLNS);
    xpath.setNamespaceContext(nsCtx);

    return fromXml(config, xpath);
}

From source file:cz.incad.kramerius.virtualcollections.VirtualCollectionsManager.java

public static VirtualCollection doVC(String pid, FedoraAccess fedoraAccess, ArrayList<String> languages) {
    try {//  w ww.j a  va2s . c  o  m
        String xPathStr;
        XPathFactory factory = XPathFactory.newInstance();
        XPath xpath = factory.newXPath();
        XPathExpression expr;

        ArrayList<String> langs = new ArrayList<String>();
        if (languages == null || languages.isEmpty()) {
            String[] ls = KConfiguration.getInstance().getPropertyList("interface.languages");
            for (int i = 0; i < ls.length; i++) {
                String lang = ls[++i];
                langs.add(lang);
            }
        } else {
            langs = new ArrayList<String>(languages);
        }
        String name = "";
        boolean canLeave = true;
        fedoraAccess.getDC(pid);
        Document doc = fedoraAccess.getDC(pid);
        xPathStr = "//dc:title/text()";
        expr = xpath.compile(xPathStr);
        Node node = (Node) expr.evaluate(doc, XPathConstants.NODE);
        if (node != null) {
            name = StringEscapeUtils.escapeXml(node.getNodeValue());
        }

        xPathStr = "//dc:type/text()";
        expr = xpath.compile(xPathStr);
        node = (Node) expr.evaluate(doc, XPathConstants.NODE);
        if (node != null) {
            canLeave = Boolean.parseBoolean(StringEscapeUtils.escapeXml(node.getNodeValue()));
        }
        VirtualCollection vc = new VirtualCollection(name, pid, canLeave);

        for (String lang : langs) {
            String dsName = TEXT_DS_PREFIX + lang;
            String value = IOUtils.readAsString(fedoraAccess.getDataStream(pid, dsName),
                    Charset.forName("UTF8"), true);
            vc.addDescription(lang, value);
        }
        return vc;
    } catch (Exception vcex) {
        logger.log(Level.WARNING, "Could not get virtual collection for  " + pid + ": " + vcex.toString());
        return null;
    }
}

From source file:Main.java

/**
 * Gets the node list from the given xml file and the given xpath expression.
 * //w  w  w .j av a2 s .  c o m
 * @param xml
 *            the xml
 * @param xpathExpression
 *            the xpath expression
 * @return the node list
 * @throws XPathExpressionException
 *             the x path expression exception
 * @throws ParserConfigurationException
 *             the parser configuration exception
 * @throws SAXException
 *             the sAX exception
 * @throws IOException
 *             Signals that an I/O exception has occurred.
 */
public static NodeList getNodeList(final File xml, final String xpathExpression)
        throws XPathExpressionException, ParserConfigurationException, SAXException, IOException {
    final DocumentBuilderFactory domFactory = DocumentBuilderFactory.newInstance();
    domFactory.setNamespaceAware(true);
    final DocumentBuilder builder = domFactory.newDocumentBuilder();
    final Document doc = builder.parse(xml);
    final XPath xpath = XPathFactory.newInstance().newXPath();
    final XPathExpression expr = xpath.compile(xpathExpression);

    final Object result = expr.evaluate(doc, XPathConstants.NODESET);
    final NodeList nodes = (NodeList) result;
    return nodes;
}