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 queryText(Document document, String xPath) {
    try {//from   w w w  . j a v a  2 s  .com
        XPathExpression expr = XPathFactory.newInstance().newXPath().compile(xPath);
        return (String) expr.evaluate(document, XPathConstants.STRING);
    } catch (XPathExpressionException e) {
        throw new IllegalArgumentException(e);
    }
}

From source file:Main.java

/**
 * @return//w  w  w.j a v  a  2  s.com
 */
public static XPath getHtmlXPath() {
    XPathFactory factory = XPathFactory.newInstance();
    XPath htmlPath = factory.newXPath();
    htmlPath.setNamespaceContext(new NamespaceContext() {
        public String getNamespaceURI(String prefix) {
            return "http://www.w3.org/1999/xhtml";
        }

        public String getPrefix(String namespaceURI) {
            return "h";
        }

        public Iterator<?> getPrefixes(String namespaceURI) {
            List<String> prefixes = new ArrayList<String>();
            prefixes.add("h");

            return prefixes.iterator();
        }
    });

    return htmlPath;
}

From source file:Main.java

public static XPathFactory getxPathFactory() {
    if (xPathFactory != null) {
        return xPathFactory;
    }/*from  w w w.java2  s. com*/

    xPathFactory = XPathFactory.newInstance();
    return xPathFactory;
}

From source file:Main.java

public static Node queryNode(Document document, String xPath) {
    try {//from  w  ww .  j a v a  2 s .  c  o  m
        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 Node getNoge(String path, Node node) throws RuntimeException {
    path = path.trim();//from w ww  .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 XPath getXPathInstance() {
    XPath xPath = XPathFactory.newInstance().newXPath();
    return xPath;
}

From source file:Main.java

/**
 * @return//from  ww w  .  ja v  a  2 s.co m
 */
public static XPath getCruxPagesXPath() {
    XPathFactory factory = XPathFactory.newInstance();
    XPath findPath = factory.newXPath();
    findPath.setNamespaceContext(new NamespaceContext() {
        public String getNamespaceURI(String prefix) {
            if (prefix.equals("c")) {
                return "http://www.cruxframework.org/crux";
            } else if (prefix.equals("v")) {
                return "http://www.cruxframework.org/view";
            }

            return "";
        }

        public String getPrefix(String namespaceURI) {
            if (namespaceURI.equals("http://www.cruxframework.org/crux")) {
                return "c";
            } else if (namespaceURI.equals("http://www.cruxframework.org/view")) {
                return "v";
            }
            return "";
        }

        public Iterator<?> getPrefixes(String namespaceURI) {
            List<String> prefixes = new ArrayList<String>();
            prefixes.add("c");
            prefixes.add("v");

            return prefixes.iterator();
        }
    });

    return findPath;
}

From source file:Main.java

public static NodeList queryNodeList(Document document, String xPath) {
    try {/*from  w ww  .j ava 2 s .  com*/
        XPathExpression expr = XPathFactory.newInstance().newXPath().compile(xPath);
        return (NodeList) expr.evaluate(document, XPathConstants.NODESET);
    } catch (XPathExpressionException e) {
        throw new IllegalArgumentException(e);
    }
}

From source file:Main.java

public static Node selectSingleNode(final Node sourceNode, final String xPathExpression) {
    Node result;// w  ww .  java2s. c  om
    XPathFactory factory = XPathFactory.newInstance(); // http://www.ibm.com/developerworks/library/x-javaxpathapi/index.html
    XPath xPathParser = factory.newXPath();

    try {
        result = (Node) xPathParser.evaluate(xPathExpression, sourceNode, XPathConstants.NODE);
    } catch (XPathExpressionException e) {
        result = null;
    }

    return result;
}

From source file:Main.java

public static String prettyXML(String xml, int indent) {
    try {//from w  ww. ja  v  a2  s  .  c o m
        // Turn xml string into a document
        Document document = DocumentBuilderFactory.newInstance().newDocumentBuilder()
                .parse(new InputSource(new ByteArrayInputStream(xml.getBytes("utf-8"))));

        // Remove whitespaces outside tags
        XPath xPath = XPathFactory.newInstance().newXPath();
        NodeList nodeList = (NodeList) xPath.evaluate("//text()[normalize-space()='']", document,
                XPathConstants.NODESET);

        for (int i = 0; i < nodeList.getLength(); ++i) {
            Node node = nodeList.item(i);
            node.getParentNode().removeChild(node);
        }
        TransformerFactory transformerFactory = TransformerFactory.newInstance();
        transformerFactory.setAttribute("indent-number", indent);
        Transformer transformer = transformerFactory.newTransformer();
        transformer.setOutputProperty(OutputKeys.ENCODING, "UTF-8");
        transformer.setOutputProperty(OutputKeys.OMIT_XML_DECLARATION, "yes");
        transformer.setOutputProperty(OutputKeys.INDENT, "yes");

        StringWriter stringWriter = new StringWriter();
        transformer.transform(new DOMSource(document), new StreamResult(stringWriter));
        return stringWriter.toString();
    } catch (Exception e) {
        throw new RuntimeException(e);
    }
}