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

public static Element querySingle(Element element, String query) {
    try {//from  w  w  w  .ja  v a 2 s. co m
        XPathExpression expr = xpath.newXPath().compile(query);
        NodeList list = (NodeList) expr.evaluate(element, XPathConstants.NODESET);

        if (list.getLength() > 0)
            return (Element) list.item(0);

    } catch (XPathExpressionException e) {
        e.printStackTrace();
    }

    return null;
}

From source file:Main.java

public static Node getNoge(String path, Node node) throws RuntimeException {
    path = path.trim();//from w w  w .  j  a v a 2  s  .c o  m
    try {
        XPath xp = XPathFactory.newInstance().newXPath();
        XPathExpression expr = xp.compile(path);

        Node lst = (Node) expr.evaluate(node, XPathConstants.NODE);
        return lst;

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

From source file:Main.java

public static Object evaluateXPath(final XPathExpression expr, final Object rootNode, final QName returnType) {
    try {/* ww w  .  j ava2s .c o m*/
        return expr.evaluate(rootNode, returnType);
    } catch (XPathExpressionException e) {
        throw new IllegalStateException("Error while evaluating xpath expression " + expr, e);
    }
}

From source file:Main.java

public static Object execXpathGetNode(String srcXmlString, String xPath) {
    Object result = null;//from  w ww. j a v  a  2s  .co m
    try {
        Document doc = stringToDoc(srcXmlString);
        XPathFactory factory = XPathFactory.newInstance();
        XPath xpath = factory.newXPath();
        XPathExpression expr = xpath.compile(xPath);
        result = expr.evaluate(doc, XPathConstants.NODE);
    } catch (Exception ex) {
        logger.error(ex);
    }
    return result;
}

From source file:Main.java

public static String editPath(String xmlSource, String xPath, String newValue)
        throws ParserConfigurationException, SAXException, IOException, XPathExpressionException,
        TransformerException {//from w  w  w .  ja v a2  s.c  o  m
    Document xmlDoc = readString(xmlSource);
    XPathExpression expr = evaluateThePath(xPath);
    NodeList nl = (NodeList) expr.evaluate(xmlDoc, XPathConstants.NODESET);
    for (int i = nl.getLength(); i > 0; i--) {
        nl.item(0).setNodeValue(newValue);
    }
    return xmlDocToString(xmlDoc);
}

From source file:Main.java

private static Node getNodeObject(String xpathString, Document doc) throws XPathExpressionException {
    // Create a xptah object
    //logger.debug("Getting the node by using xpath " + xpathString);
    XPathFactory xpf = XPathFactory.newInstance();
    XPath xpath = xpf.newXPath();
    XPathExpression expr = xpath.compile(xpathString);
    Node node = (Node) expr.evaluate(doc, XPathConstants.NODE);
    //logger.debug("Returning the Node object from xml file");
    return node;//from  www .  j  a v  a 2s . com
}

From source file:Main.java

/**
 * //from   w ww  .ja v a 2s  . c  o m
 * <B>Purpose:</B> Evaluates an XPath and returns the Node list associated
 * witht the XPath
 * 
 * @param element
 * @param xpathstring
 * @return
 * @throws XPathExpressionException
 */
public static NodeList evaluateXPath(Element element, String xpathstring) throws XPathExpressionException {
    XPathFactory factory = XPathFactory.newInstance();
    XPath xpath = factory.newXPath();
    XPathExpression expr = xpath.compile(xpathstring);
    NodeList result = (NodeList) expr.evaluate(element, XPathConstants.NODESET);

    return result;
}

From source file:Main.java

public static Object executeXPath(Document document, String expression, QName outputType) {
    Object result = null;//from  ww w .ja va 2  s  .  c  o m
    XPathFactory xPathfactory = XPathFactory.newInstance();
    XPath xpath = xPathfactory.newXPath();
    XPathExpression expr;
    try {
        expr = xpath.compile(expression);
        result = expr.evaluate(document, outputType);
    } catch (XPathExpressionException e) {
        // TODO Auto-generated catch block
        e.printStackTrace();
    }
    return result;
}

From source file:Main.java

public static Node queryNode(Document document, String xPath) {
    try {// w  w  w  .  j av a  2  s  . c  om
        XPathExpression expr = XPathFactory.newInstance().newXPath().compile(xPath);
        return (Node) expr.evaluate(document, XPathConstants.NODE);
    } catch (XPathExpressionException e) {
        throw new IllegalArgumentException(e);
    }
}

From source file:Main.java

public static String queryText(Document document, String xPath) {
    try {//from w ww.ja  v a2  s  . c om
        XPathExpression expr = XPathFactory.newInstance().newXPath().compile(xPath);
        return (String) expr.evaluate(document, XPathConstants.STRING);
    } catch (XPathExpressionException e) {
        throw new IllegalArgumentException(e);
    }
}