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 getFirstValueFromXPath(Document parent, String xpath) throws Exception {
    try {//from   w  ww.  j  a va 2s  .c o  m
        XPath xPath = XPathFactory.newInstance().newXPath();
        return (String) xPath.compile(xpath).evaluate(parent, XPathConstants.STRING);
    } catch (XPathExpressionException xpee) {
        throw new Exception(xpee.getMessage());
    }
}

From source file:Main.java

static void init() throws ParserConfigurationException {
    if (_factory == null) {
        _factory = DocumentBuilderFactory.newInstance();
        _factory.setNamespaceAware(false);
    }//w  ww.ja v a  2  s.  co m
    if (_xpath == null) {
        _xpath = XPathFactory.newInstance().newXPath();
    }
    if (_builder == null) {
        _builder = _factory.newDocumentBuilder();
    }
}

From source file:Main.java

static XPath makeXPath() {
    XPathFactory xpfactory = XPathFactory.newInstance();
    return xpfactory.newXPath();
}

From source file:Main.java

private static XPath createXPath() {
    return XPathFactory.newInstance().newXPath();
}

From source file:Main.java

public static XPath getXpath() {
    XPathFactory newInstance = XPathFactory.newInstance();
    return newInstance.newXPath();
}

From source file:Main.java

public static Node selectSingleNode(Document refNode, String expression) {
    XPath xPath = XPathFactory.newInstance().newXPath();
    Node outNode = null;/*from  ww  w  . j  a v a  2  s  . c o m*/
    try {
        outNode = (Node) xPath.compile(expression).evaluate(refNode, XPathConstants.NODE);
    } catch (XPathExpressionException e) {
        // TODO Auto-generated catch block
        e.printStackTrace();
    }
    return outNode;
}

From source file:Main.java

public static NodeList getNodes(final Document doc, final String query) throws XPathExpressionException {
    final XPath xpath = XPathFactory.newInstance().newXPath();
    final XPathExpression expr = xpath.compile(query);
    return (NodeList) expr.evaluate(doc, XPathConstants.NODESET);
}

From source file:Main.java

public static Node xpathToNode(String xpathQuery, Object domObject) throws XPathExpressionException {
    XPathFactory xpathFactory = XPathFactory.newInstance();
    XPath xpath = xpathFactory.newXPath();

    return (Node) xpath.evaluate(xpathQuery, domObject, XPathConstants.NODE);
}

From source file:Main.java

/**
 * Use an Xpath expression on the given node or document.
 *
 * @param _xpathExpression xpath expression string
 * @param _xmlDocumentOrNode a {@link Document} or {@link Node} object
 * @return NodeList never null/*from   www  .  j a  v a  2 s  .co  m*/
 * @throws IOException on error
 */
public static NodeList applyXpathExpressionToDocument(String _xpathExpression, Node _xmlDocumentOrNode)
        throws IOException {

    XPathFactory xfactory = XPathFactory.newInstance();
    XPath xpath = xfactory.newXPath();
    XPathExpression expr = null;
    try {
        expr = xpath.compile(_xpathExpression);
    } catch (XPathExpressionException _ex) {
        throw new IOException(_ex);
    }

    Object result = null;
    try {
        result = expr.evaluate(_xmlDocumentOrNode, XPathConstants.NODESET);
    } catch (Exception _ex) {
        throw new IOException(_ex);
    }

    return (NodeList) result;
}

From source file:Main.java

public static NodeList getNodes(Document doc, String query) throws XPathExpressionException {
    XPath xpath = XPathFactory.newInstance().newXPath();
    XPathExpression expr = xpath.compile(query);
    Object result = expr.evaluate(doc, XPathConstants.NODESET);
    NodeList nodes = (NodeList) result;
    return nodes;
}