Example usage for javax.xml.xpath XPath evaluate

List of usage examples for javax.xml.xpath XPath evaluate

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Introduction

In this page you can find the example usage for javax.xml.xpath XPath evaluate.

Prototype

public Object evaluate(String expression, InputSource source, QName returnType) throws XPathExpressionException;

Source Link

Document

Evaluate an XPath expression in the context of the specified InputSource and return the result as the specified type.

Usage

From source file:br.gov.lexml.parser.documentoarticulado.LexMLUtil.java

public static String formatLexML(String xml) {
    String retorno = null;/*from   w ww.  j  a  va 2 s  .co m*/
    try {
        Document document = DocumentBuilderFactory.newInstance().newDocumentBuilder()
                .parse(new InputSource(new ByteArrayInputStream(xml.getBytes("utf-8"))));

        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);
        }

        Transformer transformer = TransformerFactory.newInstance().newTransformer();
        transformer.setOutputProperty(OutputKeys.ENCODING, "UTF-8");
        transformer.setOutputProperty(OutputKeys.OMIT_XML_DECLARATION, "yes");
        transformer.setOutputProperty(OutputKeys.INDENT, "yes");
        transformer.setOutputProperty("{http://xml.apache.org/xslt}indent-amount", "4");

        StringWriter stringWriter = new StringWriter();
        StreamResult streamResult = new StreamResult(stringWriter);

        transformer.transform(new DOMSource(document), streamResult);

        retorno = stringWriter.toString();

    } catch (Exception e) {
        e.printStackTrace();
    }
    return retorno;

}

From source file:Main.java

public static String toPrettyString(String xml) {
    int indent = 4;
    try {/*from   w  w  w  . ja va  2s  .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);
        }

        // Setup pretty print options
        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, "no");
        transformer.setOutputProperty(OutputKeys.INDENT, "yes");
        transformer.setOutputProperty(OutputKeys.METHOD, "xml");

        // Return pretty print xml string
        StringWriter stringWriter = new StringWriter();
        transformer.transform(new DOMSource(document), new StreamResult(stringWriter));
        return stringWriter.toString();
    } catch (Exception e) {
        System.out.println(xml);
        throw new RuntimeException(
                "Problems prettyfing xml content [" + Splitter.fixedLength(100).split(xml) + "]", e);
    }
}

From source file:de.dplatz.padersprinter.control.TripService.java

static boolean isNodePresent(Node node, String expr, XPath xpath) throws XPathExpressionException {
    return xpath.evaluate(expr, node, XPathConstants.NODE) != null;
}

From source file:eu.planets_project.tb.utils.XCDLParser.java

/**
 * //from w w w .jav  a 2  s. c om
 * @param xcdlDoc
 * @return
 * @throws XPathExpressionException
 */
public static List<MeasurementImpl> parseXCDL(Document xcdlDoc) throws XPathExpressionException {
    List<MeasurementImpl> props = new Vector<MeasurementImpl>();

    XPath xpath = XPathFactory.newInstance().newXPath();
    NodeList nodes = (NodeList) xpath.evaluate("/*//property", xcdlDoc, XPathConstants.NODESET);

    for (int i = 0; i < nodes.getLength(); i++) {
        Node n = nodes.item(i);
        String name = (String) xpath.evaluate("./name", n, XPathConstants.STRING);
        String id = (String) xpath.evaluate("./name/@id", n, XPathConstants.STRING);
        // Loop through the property definitions and patch them into Property objects.
        MeasurementImpl m = new MeasurementImpl(makePropertyUri(id, name),
                (String) xpath.evaluate("./valueSet/labValue/val", n, XPathConstants.STRING));
        // FIXME Unify this construction: See also XCDLService.createPropertyFromFFProp
        //            m.setType( "xcdl:" + (String) xpath.evaluate( "./valueSet/labValue/type", n,  XPathConstants.STRING) );

        props.add(m);
    }

    return props;
}

From source file:de.dplatz.padersprinter.control.TripService.java

static Node getNode(Node node, String expr, XPath xpath) throws XPathExpressionException {
    return (Node) xpath.evaluate(expr, node, XPathConstants.NODE);
}

From source file:Main.java

/**
 * getStringListFromXPath//from   w w w .  ja  v a2  s  . c o  m
 * Gets a list of strings from an xml.
 * @param rootNodeExpression Evaluated on the root of the sqlconfig document to get a single Node.
 * @param listExpression Evaluated on the Node returned by rootNodeExpression, gets a NodeList.
 * @return A list of the text contents of the NodeList returned by evaluating the listExpression.
 */
public static List<String> getStringListFromXPath(Document doc, XPath xpath, String rootNodeExpression,
        String listExpression) {
    synchronized (xpath) {
        try {
            return getStringListFromXPath((Node) xpath.evaluate(rootNodeExpression, doc, XPathConstants.NODE),
                    xpath, listExpression);
        } catch (Exception e) {
            System.err.println("Error evaluating xpath expression: " + rootNodeExpression);
            e.printStackTrace();
        }
        return new Vector<String>();
    }
}

From source file:com.thinkbiganalytics.feedmgr.nifi.NifiTemplateParser.java

/**
 * @param nifiTemplate the nifi template xml string
 * @return the name of the template/* w ww . j a va 2  s  .c om*/
 */
public static String getTemplateName(String nifiTemplate)
        throws ParserConfigurationException, XPathExpressionException, IOException, SAXException {

    XPathFactory xpathFactory = XPathFactory.newInstance();
    XPath xpath = xpathFactory.newXPath();

    InputSource source = new InputSource(new StringReader(nifiTemplate));
    String name = (String) xpath.evaluate("/template/name", source, XPathConstants.STRING);
    return name;
}

From source file:de.dplatz.padersprinter.control.TripService.java

static String parseStringNode(Node node, String expr, XPath xpath) throws XPathExpressionException {
    String val = (String) xpath.evaluate(expr, node, XPathConstants.STRING);
    val = StringEscapeUtils.unescapeHtml4(val);
    return val;
}

From source file:de.dplatz.padersprinter.control.TripService.java

static int parseIntegerNode(Node node, String expr, XPath xpath) throws XPathExpressionException {
    return Integer.parseInt((String) xpath.evaluate(expr, node, XPathConstants.STRING));
}

From source file:com.cloudseal.spring.client.namespace.Utility.java

public static void removeNode(final Element rootElement, final String xPathLocation)
        throws XPathExpressionException {
    final XPath xPath = XPathFactory.newInstance().newXPath();
    xPath.setNamespaceContext(new CloudSealNamespaceContext());
    final Node node = (Node) xPath.evaluate(xPathLocation, rootElement, XPathConstants.NODE);
    final short nodeType = node.getNodeType();

    switch (nodeType) {
    case Node.ELEMENT_NODE:
        final Node parent = node.getParentNode();
        parent.removeChild(node);/*from  ww  w.j  a va2s  .  co m*/
        break;

    case Node.ATTRIBUTE_NODE:
        final Attr attribute = (Attr) node;
        final Element element = attribute.getOwnerElement();
        element.removeAttributeNode(attribute);
        break;

    default:
        throw new IllegalArgumentException("Not supported node type: " + nodeType);
    }
}