Example usage for javax.xml.xpath XPathFactory newInstance

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

public static Object parseRequestObjectFromSoap(String soapXml) throws Exception {
    Object result = null;//from ww  w . jav  a2s .  co  m

    if (soapXml != null && soapXml.trim().length() > 0) {
        DocumentBuilderFactory xmlFact = DocumentBuilderFactory.newInstance();
        xmlFact.setNamespaceAware(true);

        DocumentBuilder builder = xmlFact.newDocumentBuilder();
        XPathFactory factory = XPathFactory.newInstance();
        XPath xpath = factory.newXPath();
        StringReader xsr = new StringReader(soapXml);
        InputSource is = new InputSource(xsr);
        Document doc = builder.parse(is);

        //Node requestNode = (Node) xpath.evaluate("/soap:Envelope/soap:Body/*", doc, XPathConstants.NODE);
        Node requestNode = (Node) xpath.evaluate("/*[local-name()='Envelope']/*[local-name()='Body']/*", doc,
                XPathConstants.NODE);

        JAXBContext ctx = JAXBContext.newInstance("xo.xoi.orderentry.ebonding");
        Unmarshaller unmarshaller = ctx.createUnmarshaller();
        result = unmarshaller.unmarshal(requestNode);
    }

    return result;
}

From source file:Main.java

public static XPathExpression createXPathExpression(NamespaceContext context, String xPathQuery)
        throws XPathExpressionException {
    XPath xpath = XPathFactory.newInstance().newXPath();
    xpath.setNamespaceContext(context);//from   w  w w.j  a v  a2 s. c om
    return xpath.compile(xPathQuery);
}

From source file:Main.java

public static XPathExpression getXPathExpression(String path) throws RuntimeException {
    path = path.trim();/*from   ww w. j ava 2  s .  com*/
    try {
        XPath xp = XPathFactory.newInstance().newXPath();
        XPathExpression expr = xp.compile(path);
        return expr;

    } catch (Exception ex) {
        throw new RuntimeException(ex);
    }

}

From source file:Main.java

/**
 * Get node from XML document using xpath expression
 * //from  w  ww .j  a  va2s  . c o  m
 * @param doc
 * @param expression
 * @return
 * @throws XPathExpressionException
 */
public static Node getNode(final Document doc, final String expression) throws XPathExpressionException {
    if (null == expression || expression.isEmpty() || null == doc) {
        return null;
    }
    log.finer("Executing xpath xpression " + expression);
    XPath xPath = XPathFactory.newInstance().newXPath();
    XPathExpression expr = xPath.compile(expression);
    Object result = expr.evaluate(doc, XPathConstants.NODE);
    return (Node) result;
}

From source file:Main.java

/**
 * Get one element from XML document using xpath expression
 * /*w w  w .j a  va  2  s  .  com*/
 * @param doc
 * @param expression
 * @return
 * @throws XPathExpressionException
 */
public static Element getElement(final Document doc, final String expression) throws XPathExpressionException {
    if (null == expression || expression.isEmpty() || null == doc) {
        return null;
    }
    log.finer("Executing xpath xpression " + expression);
    XPath xPath = XPathFactory.newInstance().newXPath();
    XPathExpression expr = xPath.compile(expression);
    Object result = expr.evaluate(doc, XPathConstants.NODE);
    return (Element) result;
}

From source file:Main.java

public static String getQuery(String id) throws Exception {
    InputStream is = new ByteArrayInputStream(xml.getBytes("UTF8"));
    InputSource inputSource = new InputSource(is);
    XPath xpath = XPathFactory.newInstance().newXPath();
    return xpath.evaluate("/queries/query[@id='" + id + "']", inputSource);
}

From source file:Main.java

public static List<Node> xpathToNodeList(String xpathQuery, Object domObject) throws XPathExpressionException {
    List<Node> result = new ArrayList<Node>();

    XPathFactory xpathFactory = XPathFactory.newInstance();
    XPath xpath = xpathFactory.newXPath();
    NodeList nodeList = (NodeList) xpath.evaluate(xpathQuery, domObject, XPathConstants.NODESET);

    for (int i = 0; i < nodeList.getLength(); i++)
        result.add(nodeList.item(i));/*from   www  . j  a  v  a2s .co m*/

    return result;
}

From source file:Main.java

/**
 * Get nodelist from XML document using xpath expression
 * // w w w  .jav  a 2  s  .  c  om
 * @param doc
 * @param expression
 * @return
 * @throws XPathExpressionException
 */
public static NodeList getNodeList(final Document doc, final String expression)
        throws XPathExpressionException {
    if (null == expression || expression.isEmpty() || null == doc) {
        return null;
    }
    log.finer("Executing xpath xpression " + expression);
    XPath xPath = XPathFactory.newInstance().newXPath();
    XPathExpression expr = xPath.compile(expression);
    Object result = expr.evaluate(doc, XPathConstants.NODESET);
    return (NodeList) result;
}

From source file:Main.java

public static NodeList selectNodes(Node node, String express) {
    NodeList result = null;/*from  ww  w  .  ja  v  a  2  s  . co  m*/
    XPathFactory xpathFactory = XPathFactory.newInstance();
    XPath xpath = xpathFactory.newXPath();
    try {
        result = (NodeList) xpath.evaluate(express, node, XPathConstants.NODESET);
    } catch (XPathExpressionException e) {
        e.printStackTrace();
    }

    return result;
}

From source file:Main.java

public static XPathExpression compileXPathExpression(String xPathExpression) {

    final XPathFactory factory = XPathFactory.newInstance();
    final XPath xpath = factory.newXPath();
    try {/*  w w  w  . j  a v  a 2 s  . co m*/
        return xpath.compile(xPathExpression);
    } catch (XPathExpressionException e) {
        throw new RuntimeException("Internal error, invalid XPATH expression " + xPathExpression, e);
    }
}