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 NodeList getChildNodesByExpression(Document doc, String expression) {
    try {/*from www  . ja  va2 s.c o  m*/
        XPath xpath = XPathFactory.newInstance().newXPath();
        XPathExpression expr = xpath.compile(expression);

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

    } catch (Exception ex) {
        ex.printStackTrace();
    }
    return null;
}

From source file:Main.java

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

From source file:Main.java

public static List<String> xPathEvalList(String content, String expression) throws XPathExpressionException {
    List<String> retValues = new ArrayList<String>();
    XPath xpath = XPathFactory.newInstance().newXPath();
    InputSource inputSource = new InputSource(new StringReader(content));
    NodeList ox = (NodeList) xpath.evaluate(expression, inputSource, XPathConstants.NODESET);
    for (int i = 0; i < ox.getLength(); i++) {
        retValues.add(ox.item(i).getNodeValue());
    }/*from   w w  w  .j a v a 2  s .  c  o m*/

    return retValues;
}

From source file:Main.java

/***
 * Returns the string value of evaluated xpath
 *
 * @param  document    - XML Document to check
 * @param  xpathString - xpath to evaluate
 * @return String evaluation of the xpath
 *//*from   www. ja  v a  2 s . c o m*/
public static String getValueFromXPath(Document document, String xpathString) {
    try {
        return (String) XPathFactory.newInstance().newXPath().evaluate(xpathString, document,
                XPathConstants.STRING);
    } catch (XPathExpressionException e) {
        throw new RuntimeException("Error evaluating xpath [" + xpathString + "] -- " + e.getMessage());
    }
}

From source file:Main.java

public static Node getChildNode(Document doc, String parentTag, String childnode) {
    try {/*  ww w .j a v a  2  s  .c  om*/
        XPath xpath = XPathFactory.newInstance().newXPath();
        XPathExpression expr = xpath.compile("//" + parentTag + "/" + childnode);
        Object obj = expr.evaluate(doc, XPathConstants.NODE);
        return obj != null ? (Node) obj : null;
    } catch (Exception ex) {
        ex.printStackTrace();
    }
    return null;
}

From source file:Main.java

public static Object xpathFind(Document doc, String xpath, QName returnType) {
    try {// ww  w.j a v a2 s.c o  m
        XPathFactory xpathFactory = XPathFactory.newInstance();
        XPath xpathToolkit = xpathFactory.newXPath();
        XPathExpression xpathExpression = xpathToolkit.compile(xpath);
        return xpathExpression.evaluate(doc, returnType);
    } catch (Exception e) {
        throw new RuntimeException("Error finding nodes for <" + xpath + ">", e);
    }
}

From source file:Main.java

public static Node getXpathExpressionNode(Object xprContext, String xpExpression)
        throws XPathExpressionException {
    XPath xpath = XPathFactory.newInstance().newXPath();

    XPathExpression xpe = xpath.compile(xpExpression);
    Node node = (Node) xpe.evaluate(xprContext, XPathConstants.NODE);
    return node;/*w w w .ja  v  a 2s. co  m*/
}

From source file:Main.java

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

From source file:Main.java

public static List<Node> xPathEvalListNodes(String content, String expression) throws XPathExpressionException {
    List<Node> retValues = new ArrayList<Node>();
    XPath xpath = XPathFactory.newInstance().newXPath();
    InputSource inputSource = new InputSource(new StringReader(content));
    NodeList ox = (NodeList) xpath.evaluate(expression, inputSource, XPathConstants.NODESET);
    for (int i = 0; i < ox.getLength(); i++) {
        retValues.add(ox.item(i));//w  ww. j  a  v a2s . c  om
    }

    return retValues;
}

From source file:Main.java

public static NodeList evalXpath(InputStream xmlStream, String path) throws XPathExpressionException {
    InputSource inXML = new InputSource(xmlStream);
    XPathFactory xfactory = XPathFactory.newInstance();
    XPath xpath = xfactory.newXPath();
    XPathExpression expr = xpath.compile(path);
    Object result = expr.evaluate(inXML, XPathConstants.NODESET);
    return (NodeList) result;
}