Example usage for javax.xml.xpath XPathExpression evaluate

Introduction

In this page you can find the example usage for javax.xml.xpath XPathExpression evaluate.

Prototype

public Object evaluate(InputSource source, QName returnType) throws XPathExpressionException;

Source Link

Document

Evaluate the compiled XPath expression in the context of the specified InputSource and return the result as the specified type.

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  a  va2s.  c o  m*/
 */
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

public static NodeList getComponentsWithAttribute(Node xmlDocument, String attribute)
        throws XPathExpressionException {
    XPathFactory xPathfactory = XPathFactory.newInstance();
    XPath xpath = xPathfactory.newXPath();
    XPathExpression expr = null;
    NodeList n1 = null;/*www  .  j  av a2 s . co  m*/
    expr = xpath.compile("//*[@" + attribute + "]");
    n1 = (NodeList) expr.evaluate(xmlDocument, XPathConstants.NODESET);
    return n1;

}

From source file:Main.java

static public NodeList getNodeList(Document doc, XPath xPath, String pattern) throws XPathExpressionException {
    XPathExpression expr;
    NodeList nl;/*w  w w. j  a v  a 2 s  .  co  m*/

    expr = xPath.compile(pattern);
    nl = (NodeList) expr.evaluate(doc, XPathConstants.NODESET);

    return nl;
}

From source file:Main.java

/**
 * Return a list of elements based on xPath
 *///from   www. j  a va2 s  .  c o  m
static NodeList getElementsByAttribute(Document doc, String xPath) {
    XPathFactory xPathfactory = XPathFactory.newInstance();
    XPath xpath = xPathfactory.newXPath();
    XPathExpression expr = null;
    NodeList nl = null;
    try {
        expr = xpath.compile(xPath);
        nl = (NodeList) expr.evaluate(doc, XPathConstants.NODESET);
    } catch (XPathExpressionException e) {
        e.printStackTrace();
    }
    return nl;
}

From source file:Main.java

/**
 * Return one element based on xPath//from   w w  w. ja  va2  s.c om
 */
static Element getElementByAttribute(Document doc, String xPath) {
    XPathFactory xPathfactory = XPathFactory.newInstance();
    XPath xpath = xPathfactory.newXPath();
    XPathExpression expr = null;
    NodeList nl = null;
    try {
        expr = xpath.compile(xPath);
        nl = (NodeList) expr.evaluate(doc, XPathConstants.NODESET);
    } catch (XPathExpressionException e) {
        e.printStackTrace();
    }
    return (Element) nl.item(0);
}

From source file:Main.java

/**
 * Gets the node list from the given xml file and the given xpath expression.
 * /*w w  w . j  a v a  2 s  .co 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(File xml, String xpathExpression)
        throws XPathExpressionException, ParserConfigurationException, SAXException, IOException {
    DocumentBuilderFactory domFactory = DocumentBuilderFactory.newInstance();
    domFactory.setNamespaceAware(true);
    DocumentBuilder builder = domFactory.newDocumentBuilder();
    Document doc = builder.parse(xml);
    XPath xpath = XPathFactory.newInstance().newXPath();
    XPathExpression expr = xpath.compile(xpathExpression);

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

From source file:Main.java

/**
 * Gets the node list from the given xml file and the given xpath expression.
 * //from   w ww .j  av a 2  s.  c  o m
 * @param xml
 *            the xml file as string.
 * @param xpathExpression
 *            the xpath expression as string.
 * @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(String xml, String xpathExpression)
        throws XPathExpressionException, ParserConfigurationException, SAXException, IOException {
    DocumentBuilderFactory domFactory = DocumentBuilderFactory.newInstance();
    domFactory.setNamespaceAware(true);
    DocumentBuilder builder = domFactory.newDocumentBuilder();
    Document doc = builder.parse(xml);
    XPath xpath = XPathFactory.newInstance().newXPath();
    XPathExpression expr = xpath.compile(xpathExpression);

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

From source file:Main.java

/**
 * Return the Element corresponding the the XPath
 * /*from   w ww . j a v a 2  s . c o m*/
 * @param xmlNode
 * @param xpathString
 * @return
 * @throws XPathExpressionException
 */
public static NodeList getNodeList(Node xmlNode, String xpathString) {
    try {
        XPathExpression expr = createXPathExpression(xpathString);
        return (NodeList) expr.evaluate(xmlNode, XPathConstants.NODESET);
    } catch (XPathExpressionException e) {
        throw new RuntimeException(e);
    }
}

From source file:Main.java

public static NodeList getNodeList(Node node, String path) {
    try {//w w  w  .j  av a2 s .  co m
        slowGetValue++;
        // System.out.println("slow : " + slowGetValue + " - " + path);

        XPathFactory xPathFactory = XPathFactory.newInstance();
        XPath xpath = xPathFactory.newXPath();
        XPathExpression expr;
        expr = xpath.compile(path);
        NodeList list = (NodeList) expr.evaluate(node, XPathConstants.NODESET);

        return list;
    } catch (XPathExpressionException e) {
        e.printStackTrace();
    }
    return null;
}

From source file:Main.java

public static NodeList getXPathNodes(String search, Document domDocument, XPath xpathInstance) {
    try {//from   w w  w. j a v  a  2s  .c o  m
        XPathExpression expr = xpathInstance.compile(search);
        return (NodeList) expr.evaluate(domDocument, XPathConstants.NODESET);
    } catch (XPathExpressionException e) {
        e.printStackTrace();
        return null;
    }
}