Example usage for javax.xml.xpath XPath compile

List of usage examples for javax.xml.xpath XPath compile

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Introduction

In this page you can find the example usage for javax.xml.xpath XPath compile.

Prototype

public XPathExpression compile(String expression) throws XPathExpressionException;

Source Link

Document

Compile an XPath expression for later evaluation.

Usage

From source file:Main.java

/**
 * Uses the passed XPath expression to locate a set of nodes in the passed element.
 * @param targetNode The node to search.
 * @param expression The XPath expression.
 * @return A list of located nodes./*from   w w  w.  j ava 2 s  . com*/
 */
public static List<Node> xGetNodes(Node targetNode, String expression) {
    List<Node> nodes = new ArrayList<Node>();
    XPath xpath = null;
    try {
        xpath = XPathFactory.newInstance().newXPath();
        XPathExpression xpathExpression = xpath.compile(expression);
        NodeList nodeList = (NodeList) xpathExpression.evaluate(targetNode, NODESET);
        if (nodeList != null) {
            for (int i = 0; i < nodeList.getLength(); i++) {
                nodes.add(nodeList.item(i));
            }
        }
        return nodes;
    } catch (Exception e) {
        throw new RuntimeException("XPath:Failed to locate the nodes:" + expression, e);
    }
}

From source file:Main.java

/**
 * Extract the parameters specified in the XML document for the Element
 * specified by parent.//from ww  w  .j  a  va  2  s .  c  o  m
 * 
 * @param parent
 *            - Parent Node.
 * @return
 * @throws Exception
 */
public static HashMap<String, Object> parseParams(Element parent) throws Exception {
    XPath xpath = XPathFactory.newInstance().newXPath();
    // XPath Query for showing all nodes value
    XPathExpression expr = xpath.compile(_PARAM_NODE_PARAMS_);

    NodeList nodes = (NodeList) expr.evaluate(parent, XPathConstants.NODESET);
    if (nodes != null && nodes.getLength() > 0) {
        HashMap<String, Object> params = new HashMap<String, Object>();
        for (int ii = 0; ii < nodes.getLength(); ii++) {
            Element elm = (Element) nodes.item(ii);
            String name = elm.getAttribute(_PARAM_ATTR_NAME_);
            String value = elm.getAttribute(_PARAM_ATTR_VALUE_);
            if (name != null && !name.isEmpty()) {
                params.put(name, value);
            }
        }
        return params;
    }
    return null;
}

From source file:Main.java

public static boolean updateDBConfig(String userName, String password, String name, String driver, String url,
        String dbConfigPath) throws XPathExpressionException, ParserConfigurationException, SAXException,
        IOException, TransformerException {
    Document document = loadXML(dbConfigPath);

    XPath path = XPathFactory.newInstance().newXPath();
    XPathExpression express = path.compile(
            "//Configure/New[@class='org.eclipse.jetty.plus.jndi.Resource']/Arg/New[@class='bitronix.tm.resource.jdbc.PoolingDataSource']/Set[@name='className']");

    NodeList nodes = (NodeList) express.evaluate(document, XPathConstants.NODESET);
    Node node = nodes.item(0);/*w  w w.  j av a2 s  .  com*/
    node.setTextContent(driver);
    path.reset();

    express = path.compile(
            "//Configure/New[@class='org.eclipse.jetty.plus.jndi.Resource']/Arg/New[@class='bitronix.tm.resource.jdbc.PoolingDataSource']/Get['@name=driverProperties']/Put");
    nodes = (NodeList) express.evaluate(document, XPathConstants.NODESET);

    for (int i = 0; i < nodes.getLength(); i++) {
        node = nodes.item(i);
        if ("user".equals(node.getAttributes().item(0).getTextContent())) {
            node.setTextContent(userName);
        } else if ("password".equals(node.getAttributes().item(0).getTextContent())) {
            node.setTextContent(password);
        } else if ("URL".equals(node.getAttributes().item(0).getTextContent())) {
            //            String url = node.getTextContent();
            //            System.out.println("basic url ---> " + url + "; name -->" + name);
            //            url = replaceDBName("examples", name, url);
            //            System.out.println("dist url ---> " + url);
            node.setTextContent(url);
        }
    }
    path.reset();

    return updateXML(document, dbConfigPath);
}

From source file:Main.java

/**
 * Returns the xml value.//from w w  w.j  a  va  2 s  .  c o m
 * 
 * @param sIn
 * @param sxpath
 * @return
 * @throws ParserConfigurationException
 * @throws IOException
 * @throws SAXException
 * @throws XPathExpressionException
 */
public static String XPathValueFromString(String sIn, String sxpath)
        throws ParserConfigurationException, IOException, SAXException, XPathExpressionException {
    // DocumentBuilderFactory domFactory = DocumentBuilderFactory.newInstance();
    Document doc = loadXMLFromString(sIn);
    XPath xPath = XPathFactory.newInstance().newXPath();
    // XPath Query for showing all nodes value
    XPathExpression expr = xPath.compile(sxpath);

    Object result = expr.evaluate(doc, XPathConstants.NODESET);
    NodeList nodes = (NodeList) result;
    String sReturn = "";
    for (int i = 0; i < nodes.getLength(); i++) {
        sReturn = nodes.item(i).getNodeValue();
    }
    return sReturn;
}

From source file:Main.java

public static boolean updatePomDBConfig(String userName, String password, String name, String host, String port,
        String version, String pomPath) throws ParserConfigurationException, SAXException, IOException,
        XPathExpressionException, TransformerException {
    Document document = loadXML(pomPath);
    XPath path = XPathFactory.newInstance().newXPath();
    XPathExpression express = path.compile("//project/properties/mysql.server.version");

    NodeList nodes = (NodeList) express.evaluate(document, XPathConstants.NODESET);
    Node node = nodes.item(0);//from  w w w. j av a  2 s .  c  om
    node.setTextContent(version);
    path.reset();

    express = path.compile("//project/properties/mysql.server.host");
    nodes = (NodeList) express.evaluate(document, XPathConstants.NODESET);
    node = nodes.item(0);
    node.setTextContent(host);
    path.reset();

    express = path.compile("//project/properties/mysql.server.port");
    nodes = (NodeList) express.evaluate(document, XPathConstants.NODESET);
    node = nodes.item(0);
    node.setTextContent(port);
    path.reset();

    express = path.compile("//project/properties/mysql.server.database");
    nodes = (NodeList) express.evaluate(document, XPathConstants.NODESET);
    node = nodes.item(0);
    node.setTextContent(name);
    path.reset();

    express = path.compile("//project/properties/mysql.server.user");
    nodes = (NodeList) express.evaluate(document, XPathConstants.NODESET);
    node = nodes.item(0);
    node.setTextContent(userName);
    path.reset();

    express = path.compile("//project/properties/mysql.server.password");
    nodes = (NodeList) express.evaluate(document, XPathConstants.NODESET);
    node = nodes.item(0);
    node.setTextContent(password);
    path.reset();

    return updateXML(document, pomPath);
}

From source file:Main.java

public static final List<Node> selectNodesViaXPath(XPath xPath, Node startingNode, String xPathExpression)
        throws XPathExpressionException {
    List<Node> data = new ArrayList<Node>();
    XPathExpression expression = xPath.compile(xPathExpression);
    Object result = expression.evaluate(startingNode, XPathConstants.NODESET);
    NodeList nodeList = (NodeList) result;
    for (int index = 0; index < nodeList.getLength(); index++) {
        data.add(nodeList.item(index));/*from  w w w.ja  va  2s.  com*/
    }
    return data;
}

From source file:Main.java

/**
 * Returns a compiled XPath expression.//ww  w.  j  a  va2 s.c  om
 *
 * @param expression                The XPath expression as a String.
 * @param namespaceContext          The namespace context used by the XPath expression.
 * @return                          The compiled XPathExpression.
 * @throws XPathExpressionException If a parsing error occurs.
 */
public static XPathExpression compile(String expression, NamespaceContext namespaceContext)
        throws XPathExpressionException {
    XPath compiler = XPathFactory.newInstance().newXPath();
    if (namespaceContext != null)
        compiler.setNamespaceContext(namespaceContext);
    return compiler.compile(expression);
}

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);//from  w  w w. j  av 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:es.upv.grycap.coreutils.fiber.test.mockserver.ObjectResponseValidator.java

@Nullable
private static String readObjectIdFromXml(final String payload)
        throws SAXException, IOException, ParserConfigurationException, XPathExpressionException {
    final Document document = DocumentBuilderFactory.newInstance().newDocumentBuilder()
            .parse(new ByteArrayInputStream(payload.getBytes()));
    final XPath xPath = XPathFactory.newInstance().newXPath();
    final XPathExpression xPathExpression = xPath.compile("//*/coreutils/objectId/text()");
    return trimToNull((String) xPathExpression.evaluate(document, STRING));
}

From source file:Main.java

public static String getAttribute(String fileName, String xPathExpression, String attributeName) {
    try {/*w w w. ja  v  a 2s.  c  o  m*/
        Document document = parseXML(new File(fileName));
        XPath xpath = XPathFactory.newInstance().newXPath();
        XPathExpression xpathExpression = xpath.compile(xPathExpression);
        Node node = (Node) xpathExpression.evaluate(document, NODE);
        return getAttributeValueByName(node, attributeName);
    } catch (Exception e) {
        throw new RuntimeException("Failed to extract element from:" + fileName, e);
    }
}