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 String eval(Node doc, String xpath_url) throws XPathExpressionException {
    XPathFactory xpathFactory = XPathFactory.newInstance();
    return xpathFactory.newXPath().compile(xpath_url).evaluate(doc);
}

From source file:Main.java

private static XPath getXPath() {
    if (xpath == null) {
        xpath = XPathFactory.newInstance().newXPath();
    }
    return xpath;
}

From source file:Main.java

private static XPath getX_PATH() {
    if (X_PATH == null) {
        X_PATH = XPathFactory.newInstance().newXPath();
    }
    return X_PATH;
}

From source file:Main.java

public static String getNodeCount(String nodeName, String xmlString) {
    String response = "";
    XPathFactory factory = XPathFactory.newInstance();
    XPath xPath = factory.newXPath();
    try {//from  w  ww  .  j a  va 2s  .c  o  m
        XPathExpression xPathExpression = xPath.compile("count(//" + nodeName + ")");
        InputSource is = new InputSource();
        is.setCharacterStream(new StringReader(xmlString));
        response = xPathExpression.evaluate(is);

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

    return response;
}

From source file:Main.java

public static XPathFactory newXPathFactory() {
    XPathFactory ret = null;//www.  j  ava2 s. c om
    if (ret == null)
        try {
            ret = XPathFactory.newInstance();
        } catch (Exception exception) {
        }
    if (ret == null)
        try {
            new XPathFactoryImpl();
        } catch (Exception exception1) {
        }
    if (ret == null)
        System.out.println("Error: Can't find XPathFactory");
    return ret;
}

From source file:Main.java

public static String getXmlNodeValue(Document doc, String nodePath) throws Exception {
    XPath xpath = XPathFactory.newInstance().newXPath();
    String nodeValue = (String) xpath.evaluate(nodePath, doc, XPathConstants.STRING);
    return nodeValue;
}

From source file:Main.java

public static XPathExpression createXpath(final String xpath) throws XPathExpressionException {
    final XPathFactory xPathfactory = XPathFactory.newInstance();
    final XPath x = xPathfactory.newXPath();
    final XPathExpression expr = x.compile(xpath);

    return expr;/*from w w w .  j a  v  a2s  .co m*/
}

From source file:Main.java

public static NodeList executeXpathQuery(Node root, String query) throws TransformerException {

    try {/*from   w  ww. j a  v a  2 s.c  om*/
        XPathFactory factory = XPathFactory.newInstance();
        XPath xpath = factory.newXPath();
        XPathExpression expr = xpath.compile(query);

        Object result = expr.evaluate(root, XPathConstants.NODESET);
        NodeList nodes = (NodeList) result;
        return nodes;
    } catch (XPathExpressionException e) {
        throw new RuntimeException(e);
    }
}

From source file:Main.java

public static Node findNode(String xpath, Node scope) throws XPathExpressionException {
    XPathFactory xpf = XPathFactory.newInstance();
    XPath xp = xpf.newXPath();//from   w w  w .ja v  a2s .c o  m

    return (Node) xp.evaluate(xpath, scope, XPathConstants.NODE);
}

From source file:Main.java

public static XPath namespaceAwareXpath(final String prefix, final String nsURI) {
    XPathFactory xPathfactory = XPathFactory.newInstance();
    XPath xpath = xPathfactory.newXPath();
    NamespaceContext ctx = new NamespaceContext() {
        @Override/*from w w  w . j  av a2 s .  c o m*/
        public String getNamespaceURI(String aPrefix) {
            if (aPrefix.equals(prefix))
                return nsURI;
            else
                return null;
        }

        @Override
        public Iterator getPrefixes(String val) {
            throw new UnsupportedOperationException();
        }

        @Override
        public String getPrefix(String uri) {
            throw new UnsupportedOperationException();
        }
    };
    xpath.setNamespaceContext(ctx);
    return xpath;
}