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 Object evaluateXPath(String xpath, Object item, QName returnType) {
    try {// w ww.  j  av  a2s  .  c o  m
        return XPathFactory.newInstance().newXPath().compile(xpath).evaluate(item, returnType);
    } catch (XPathExpressionException e) {
        throw new IllegalArgumentException(e);
    }
}

From source file:Main.java

/**
 * Return a list of elements based on xPath
 *//*from  ww  w  .  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

public static NodeList SelectNodes(Document doc, String xmlpath) {
    NodeList nodes = null;// w w  w  .  j a v a  2 s  . com
    Object result;
    try {
        XPathFactory xFactory = XPathFactory.newInstance();
        XPath xpath = xFactory.newXPath();

        XPathExpression expr;
        expr = xpath.compile(xmlpath);
        result = expr.evaluate(doc, XPathConstants.NODESET);
        nodes = (NodeList) result;
    } catch (XPathExpressionException e) {
        // TODO Auto-generated catch block
        e.printStackTrace();
    }

    return nodes;
}

From source file:Main.java

public static List<Element> getXPathList(Node node, String expr) {
    assertNotNull("node == null", node);
    XPathFactory factory = XPathFactory.newInstance();
    XPath xpath = factory.newXPath();
    List<Element> result = new ArrayList<Element>();
    try {/* ww w .  j  ava2 s . c  o m*/
        NodeList nl = (NodeList) xpath.evaluate(expr, node, XPathConstants.NODESET);
        for (int i = 0; i < nl.getLength(); i++) {
            result.add((Element) nl.item(i));
        }
        return result;
    } catch (XPathExpressionException e) {
        throw new RuntimeException(e);
    }
}

From source file:Main.java

/**
 * Return one element based on xPath/*from  ww  w .  jav  a2  s.co  m*/
 */
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

public static NodeList getNodes(Object 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;
}

From source file:Main.java

public static XPath getSchemaXPath() {
    XPath xPath = schemaXPathThreadLocal.get();

    if (xPath == null) {
        xPath = XPathFactory.newInstance().newXPath();

        xPath.setNamespaceContext(new NamespaceContext() {
            @Override/*  w w  w .  j av  a2  s  .c  om*/
            public String getNamespaceURI(String prefix) {
                return XMLConstants.W3C_XML_SCHEMA_NS_URI;
            }

            @Override
            public String getPrefix(String namespaceURI) {
                return "xs";
            }

            @Override
            public Iterator getPrefixes(String namespaceURI) {
                return Arrays.asList("xs").iterator();
            }
        });
        schemaXPathThreadLocal.set(xPath);
    }

    return xPath;
}

From source file:Main.java

public static NodeList getNodes(final Object 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

/**
 * convenience method to generate an XPathExpression object from a string representing an Xpath
 * @param pathstring the string//ww  w  . j av a  2  s .  co m
 * @return an Xpath object, or null if there was an exception
 */
public static XPathExpression makeXPathFromString(String pathstring) {
    XPathFactory factory = XPathFactory.newInstance();
    XPath xpath = factory.newXPath();
    XPathExpression expr = null;
    try {
        expr = xpath.compile(pathstring);
    } catch (XPathExpressionException e) {
        // TODO Auto-generated catch block
        e.printStackTrace();

    }
    return expr;
}

From source file:Main.java

public static ArrayList<Element> getElementByXPath(Element el, String name) {
    try {/* www.ja  v a 2s.  co m*/
        NodeList nl = (NodeList) XPathFactory.newInstance().newXPath().evaluate(name, el,
                XPathConstants.NODESET);
        return nodelistToElement(nl);
    } catch (XPathExpressionException e) {
        e.printStackTrace();
    }
    return null;
}