Example usage for javax.xml.xpath XPathFactory newXPath

Introduction

In this page you can find the example usage for javax.xml.xpath XPathFactory newXPath.

Prototype

public abstract XPath newXPath();

Source Link

Document

Return a new XPath using the underlying object model determined when the XPathFactory was instantiated.

Usage

From source file:eu.scape_project.planning.evaluation.evaluators.XmlExtractor.java

/**
 * very useful: {@link http/*from  w w  w.j  a  v  a2s.c om*/
 * ://www.ibm.com/developerworks/library/x-javaxpathapi.html}
 * 
 * @param doc
 * @param path
 * @param scale
 * @return
 * @throws ParserConfigurationException
 * @throws SAXException
 * @throws IOException
 * @throws XPathExpressionException
 */
private String extractTextInternal(Document doc, String path)
        throws ParserConfigurationException, SAXException, IOException, XPathExpressionException {

    XPathFactory factory = XPathFactory.newInstance();

    XPath xpath = factory.newXPath();
    xpath.setNamespaceContext(namespaceContext);
    XPathExpression expr = xpath.compile(path);
    try {
        String result = (String) expr.evaluate(doc, XPathConstants.STRING);
        return result;
    } catch (Exception e) {
        log.error("XML extraction for path " + path + " failed: " + e.getMessage(), e);
        return "XML extraction for path " + path + " failed: " + e.getMessage();
    }
}

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From source file:edu.sabanciuniv.sentilab.sare.controllers.opinion.OpinionDocumentFactory.java

private OpinionDocument create(OpinionDocument document, OpinionCorpus corpus, Node node)
        throws XPathException {

    try {//w  w w  . j av  a2 s  .c om
        Validate.notNull(node, CannedMessages.NULL_ARGUMENT, "node");
    } catch (NullPointerException e) {
        throw new IllegalFactoryOptionsException(e);
    }

    XPathFactory factory = XPathFactory.newInstance();
    XPath xpath = factory.newXPath();
    Double polarity = (Double) xpath.compile("./@polarity").evaluate(node, XPathConstants.NUMBER);

    return this.create(document, corpus, node.getTextContent().trim(), polarity);
}

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From source file:com.dianping.zebra.shard.jdbc.base.SingleDBBaseTestCase.java

protected void parseCreateTableScriptFile() throws Exception {
    DocumentBuilderFactory factory = DocumentBuilderFactory.newInstance();
    DocumentBuilder builder = factory.newDocumentBuilder();
    Document configDoc = builder/*  w  w w .jav  a  2  s .c  o m*/
            .parse(SingleDBBaseTestCase.class.getClassLoader().getResourceAsStream(getCreateTableScriptPath()));
    XPathFactory xpathFactory = XPathFactory.newInstance();
    XPath xpath = xpathFactory.newXPath();
    NodeList tableScriptList = (NodeList) xpath.compile("/tables/table").evaluate(configDoc,
            XPathConstants.NODESET);
    for (int i = 0; i < tableScriptList.getLength(); i++) {
        SingleCreateTableScriptEntry entry = new SingleCreateTableScriptEntry();
        Element ele = (Element) tableScriptList.item(i);
        entry.setTableName(ele.getAttribute("name"));
        entry.setCreateTableScript(ele.getTextContent());
        createdTableList.add(entry);
    }
}

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From source file:com.fluidops.iwb.deepzoom.CXMLServlet.java

static void readImageCollectionFile(String collection) {
    InputStream stream = null;/* w ww  . ja v  a  2s  .  c  o m*/
    try {
        stream = new FileInputStream(collection);

        Document doc = null;

        doc = DocumentBuilderFactory.newInstance().newDocumentBuilder().parse(stream);
        XPathFactory factory = XPathFactory.newInstance();
        XPath xpath = factory.newXPath();
        XPathExpression expr = xpath.compile("//I");
        NodeList result = (NodeList) expr.evaluate(doc, XPathConstants.NODESET);
        for (int i = 0; i < result.getLength(); i++) {
            Node node = result.item(i);
            NamedNodeMap map = node.getAttributes();
            String source = map.getNamedItem("Source").getNodeValue();
            String id = map.getNamedItem("Id").getNodeValue();

            source = source.substring("dzimages/".length(), source.lastIndexOf(".xml"));
            ids.put(source, id);
        }
    } catch (RuntimeException e) {
        logger.error(e.getMessage(), e);
    } catch (Exception e) {
        logger.error(e.getMessage(), e);
    } finally {
        IOUtils.closeQuietly(stream);
    }
}

---

From source file:edu.wisc.hrs.dao.BaseHrsSoapDao.java

protected String evaluateXPath(Node node, String expression) {
    final XPathFactory xpathFactory = XPathFactory.newInstance();
    final XPath xPath = xpathFactory.newXPath();
    final XPathExpression xpathExpression;
    try {/*from w w  w  .  j  a  va  2s. c  o  m*/
        xpathExpression = xPath.compile(expression);
    } catch (XPathExpressionException e) {
        return null;
    }

    try {
        return xpathExpression.evaluate(node);
    } catch (XPathExpressionException e) {
        return null;
    }
}

---

From source file:edu.sabanciuniv.sentilab.sare.controllers.opinion.OpinionCorpusFactory.java

@Override
protected OpinionCorpusFactory addXmlPacket(OpinionCorpus corpus, InputStream input)
        throws ParserConfigurationException, SAXException, IOException, XPathException {

    Validate.notNull(corpus, CannedMessages.NULL_ARGUMENT, "corpus");
    Validate.notNull(input, CannedMessages.NULL_ARGUMENT, "input");

    DocumentBuilderFactory domFactory = DocumentBuilderFactory.newInstance();
    domFactory.setNamespaceAware(true);/*from  w w w  .ja  v  a 2s . c  o m*/
    Document doc = domFactory.newDocumentBuilder().parse(input);

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

    OpinionDocumentFactory opinionFactory;

    if ("document".equals(doc.getDocumentElement().getLocalName())) {
        opinionFactory = new OpinionDocumentFactory().setCorpus(corpus).setXmlNode(doc.getDocumentElement());
        corpus.addDocument(opinionFactory.create());
        return this;
    }

    Node corpusNode = (Node) xpath.compile("/corpus").evaluate(doc, XPathConstants.NODE);
    if (corpusNode == null) {
        corpusNode = Validate.notNull(doc.getDocumentElement(), CannedMessages.NULL_ARGUMENT, "/corpus");
    }

    String title = (String) xpath.compile("./@title").evaluate(corpusNode, XPathConstants.STRING);
    String description = (String) xpath.compile("./@description").evaluate(corpusNode, XPathConstants.STRING);
    String language = (String) xpath.compile("./@language").evaluate(corpusNode, XPathConstants.STRING);

    if (StringUtils.isNotEmpty(title)) {
        corpus.setTitle(title);
    }

    if (StringUtils.isNotEmpty(description)) {
        corpus.setDescription(description);
    }

    if (StringUtils.isNotEmpty(language)) {
        corpus.setLanguage(language);
    }

    NodeList documentNodes = (NodeList) xpath.compile("./document").evaluate(corpusNode,
            XPathConstants.NODESET);
    if (documentNodes == null || documentNodes.getLength() == 0) {
        documentNodes = corpusNode.getChildNodes();
        Validate.isTrue(documentNodes != null && documentNodes.getLength() > 0, CannedMessages.NULL_ARGUMENT,
                "/corpus/document");
    }

    for (int index = 0; index < documentNodes.getLength(); index++) {
        opinionFactory = new OpinionDocumentFactory().setCorpus(corpus).setXmlNode(documentNodes.item(index));
        corpus.addDocument(opinionFactory.create());
    }

    return this;
}

---

From source file:eu.scape_project.planning.evaluation.evaluators.XmlExtractor.java

public HashMap<String, String> extractValues(Document xml, String path) {
    try {//  w  w w  .  j a v  a  2s  .  c  om
        HashMap<String, String> resultMap = new HashMap<String, String>();

        XPathFactory factory = XPathFactory.newInstance();

        XPath xpath = factory.newXPath();
        xpath.setNamespaceContext(namespaceContext);
        XPathExpression expr = xpath.compile(path);

        NodeList list = (NodeList) expr.evaluate(xml, XPathConstants.NODESET);
        if (list != null) {
            for (int i = 0; i < list.getLength(); i++) {
                Node n = list.item(i);
                String content = n.getTextContent();
                if (content != null) {
                    resultMap.put(n.getLocalName(), content);
                }
            }
        }
        return resultMap;
    } catch (Exception e) {
        log.error("Could not parse XML " + " searching for path " + path + ": " + e.getMessage(), e);
        return null;
    }
}

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From source file:net.javacrumbs.springws.test.util.DefaultXmlUtil.java

@SuppressWarnings("unchecked")
public boolean isSoap(Document document) {
    XPathFactory factory = XPathFactory.newInstance();
    XPath xpath = factory.newXPath();
    xpath.setNamespaceContext(SOAP_NAMESPACE_CONTEXT);
    try {/*from   w w  w .j  a  v a 2  s .  c o m*/
        for (Iterator iterator = SOAP_NAMESPACE_CONTEXT.getBoundPrefixes(); iterator.hasNext();) {
            String prefix = (String) iterator.next();
            if ((Boolean) xpath.evaluate("/" + prefix + ":Envelope", document, XPathConstants.BOOLEAN)) {
                return true;
            }
        }
    } catch (XPathExpressionException e) {
        logger.warn(e);
    }
    return false;
}

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From source file:it.acubelab.batframework.systemPlugins.TagmeAnnotator.java

private String getConfigValue(String setting, String name, Document doc) throws XPathExpressionException {
    XPathFactory xPathfactory = XPathFactory.newInstance();
    XPath xpath = xPathfactory.newXPath();
    XPathExpression userExpr = xpath
            .compile("tagme/setting[@name=\"" + setting + "\"]/param[@name=\"" + name + "\"]/@value");
    return userExpr.evaluate(doc);
}

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From source file:com.oracle.tutorial.jdbc.ProductInformationTable.java

public void populateTable(String fileName)
        throws SQLException, ParserConfigurationException, SAXException, IOException, XPathExpressionException {
    javax.xml.parsers.DocumentBuilderFactory factory = javax.xml.parsers.DocumentBuilderFactory.newInstance();
    // factory.setNamespaceAware(true);
    factory.setNamespaceAware(true);//w w  w  . ja va  2s . c  o  m
    DocumentBuilder builder = factory.newDocumentBuilder();
    Document doc = builder.parse(fileName);

    XPathFactory xPathfactory = XPathFactory.newInstance();

    XPath xPath = xPathfactory.newXPath();

    NodeList nodes = (NodeList) xPath.evaluate("/coffee-product-information/item[coffee = 'Columbian']", doc,
            XPathConstants.NODESET);

    for (int i = 0; i < nodes.getLength(); i++) {
        Node currentNode = nodes.item(i);
        // Retrieve the description element

        currentNode.normalize();

        if (currentNode == null) {
            System.out.println("Current node is null");
        }

        //      System.out.println(currentNode.getTextContent());

        Node descriptionNode = (Node) xPath.evaluate("description", currentNode, XPathConstants.NODE);

        if (descriptionNode == null) {
            System.out.println("DescriptionNode is null");
        } else {

            System.out.println(descriptionNode.getTextContent());

            NodeList descriptionNodeChildren = descriptionNode.getChildNodes();
            System.out.println("Description node has " + descriptionNodeChildren.getLength() + " child nodes");
            Node descNodeChild = descriptionNode.getFirstChild();
            System.out.println("Only child node type: " + descNodeChild.getNodeType());
        }

        //      System.out.println("Description: " + descriptionNode.getNodeValue());

        // System.out.println(nodes.item(i).getNodeValue());
    }

}

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