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:nl.opengeogroep.filesetsync.client.plugin.SetFileXpathToHttpRequestHeaderPlugin.java

private void updateHeader(String header) {
    String file = null, xpathString = null, lastModified = null, lastValue = null;
    try {//from   ww  w. ja  v  a  2 s  .  c  o  m
        Properties props = headers.get(header);
        if (props == null || !props.containsKey("file") || !props.containsKey("xpath")) {
            log.warn("Invalid configuration for header " + header + ", ignoring");
            return;
        }
        file = props.getProperty("file");
        xpathString = props.getProperty("xpath");
        lastModified = props.getProperty("lastModified");
        lastValue = props.getProperty("lastValue");

        File f = new File(file);
        if (!f.exists() || !f.canRead()) {
            log.warn(String.format("Cannot read value for header \"%s\" from file \"%s\"", header, file));
            return;
        }

        if (lastModified != null && lastModified.equals(f.lastModified() + "")) {
            log.trace("File for header value " + header + " was not modified, keeping value " + lastValue);
            return;
        }

        Document doc = DocumentBuilderFactory.newInstance().newDocumentBuilder().parse(f);
        XPath xpath = XPathFactory.newInstance().newXPath();
        String value = xpath.evaluate(xpathString, doc);

        log.info(String.format("Value extracted from file \"%s\" using xpath \"%s\": %s", file, xpathString,
                value));

        props.put("lastValue", value);
        props.put("lastModified", f.lastModified() + "");

    } catch (Exception e) {
        log.error(String.format(
                "Error updating header %s, file=%s, xpathString=%s, lastModified=%s, lastValue=%s", header,
                file, xpathString, lastModified, lastValue), e);
    }
}

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From source file:com.hotwire.test.steps.application.IosApplication.java

public String getExpectedAnalytics(String analyticsParams) throws Exception {
    DocumentBuilderFactory factory = DocumentBuilderFactory.newInstance();
    factory.setNamespaceAware(true);/* w  w w .j  a  v  a 2s  .  c  om*/
    DocumentBuilder builder = factory.newDocumentBuilder();
    Document doc = builder.parse("vertical");
    XPathFactory xpathfactory = XPathFactory.newInstance();
    XPath xpath = xpathfactory.newXPath();

    String paramsToPath = "//" + (analyticsParams.replaceAll(":", "/")) + "/node()";
    XPathExpression expr = xpath.compile(paramsToPath);
    Object result = expr.evaluate(doc, XPathConstants.NODESET);
    NodeList nodes = (NodeList) result;

    StringBuilder sb = new StringBuilder();
    for (int i = 0; i < nodes.getLength(); i++) {
        sb.append((nodes.item(i).getNodeName() + "=" + nodes.item(i).getTextContent()).trim());
    }
    String expectedParams = sb.toString().replaceAll("#text=", ";");

    return expectedParams;
}

---

From source file:de.ingrid.iplug.opensearch.converter.IngridRSSConverter.java

/**
 * Return the hits coming from the response of an OS-Interface.
 * /*from ww  w  . j av a2  s  . c om*/
 * @param doc
 *            is the converted response into a document structure
 * @param plugId
 * @param totalResults
 * @param groupedBy
 * @return
 * @throws XPathExpressionException
 */
private IngridHit[] getHits(Document doc, String plugId, int totalResults, String groupedBy)
        throws XPathExpressionException {
    XPath xpath = XPathFactory.newInstance().newXPath();
    NodeList nodes = (NodeList) xpath.evaluate("/rss/channel/item", doc, XPathConstants.NODESET);
    IngridHit[] hits = new IngridHit[nodes.getLength()];

    for (int i = 0; i < nodes.getLength(); i++) {
        IngridHit hit = new IngridHit(plugId, "0", 0, (float) 1.0);
        Node node = nodes.item(i);
        hit.put("title", getTitle(node));
        hit.put("url", getLink(node));
        hit.put("abstract", getAbstract(node));
        hit.put("no_of_hits", String.valueOf(totalResults));
        hit.setScore(getScore(node));

        // ingrid specific data
        setIngridHitDetail(hit, node, groupedBy);

        hits[i] = hit;
    }

    // now we have all original hits, let's manipulate the score
    normalizeRanking(hits);

    return hits;
}

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From source file:com.norconex.committer.gsa.XmlOutputTest.java

@Test
public void testWriteMultipleRecords() throws Exception {

    File file = tempFolder.newFile();
    FileOutputStream out = new FileOutputStream(file);
    XmlOutput xmlOutput = new XmlOutput(out);

    Properties metadata1 = new Properties();
    metadata1.addString("url", "http://www.corp.enterprise.com/hello01");
    metadata1.addString("mimetype", "text/plain");
    metadata1.addString("collector.content-type", "text/plain");
    metadata1.addString("last-modified", "Tue, 6 Nov 2007 12:45:26 GMT");
    metadata1.addString("Date", "Tue, 6 Nov 2007 12:45:26 GMT");
    String content1 = "This is hello01";

    Properties metadata2 = new Properties();
    metadata2.addString("url", "http://www.corp.enterprise.com/hello02");
    metadata2.addString("mimetype", "text/plain");
    metadata2.addString("collector.content-type", "text/plain");
    metadata2.addString("last-modified", "Tue, 6 Nov 2009 22:45:26 GMT");
    metadata2.addString("Date", "Tue, 6 Nov 2009 22:45:26 GMT");
    String content2 = "This is hello02";

    xmlOutput.write(Arrays.asList(buildMockAddOperation(metadata1, content1),
            buildMockAddOperation(metadata2, content2)));

    DocumentBuilderFactory dbf = DocumentBuilderFactory.newInstance();
    dbf.setFeature("http://apache.org/xml/features/nonvalidating/load-external-dtd", false);
    Document doc = dbf.newDocumentBuilder().parse(file);
    XPath xpath = XPathFactory.newInstance().newXPath();
    NodeList nodes = (NodeList) xpath.evaluate("/gsafeed/group/record", doc, XPathConstants.NODESET);
    assertEquals(2, nodes.getLength());/*from ww w  .  jav a 2s . c  o m*/
}

---

From source file:br.com.insula.spring.security.janrain.JanrainService.java

private XPath createXPath() {
    XPathFactory xPathFactory = XPathFactory.newInstance();
    return xPathFactory.newXPath();
}

---

From source file:edu.cornell.mannlib.vitro.utilities.containerneutral.CheckContainerNeutrality.java

@BeforeClass
public static void createXPath() {
    xpath = XPathFactory.newInstance().newXPath();
    xpath.setNamespaceContext(new StupidNamespaceContext());
}

---

From source file:com.streak.logging.analysis.AnalysisUtility.java

public static List<String> fetchCloudStorageUris(String bucketName, String startKey, String endKey,
        HttpRequestFactory requestFactory) throws IOException {
    List<String> result = new ArrayList<String>();

    String bucketUri = "http://commondatastorage.googleapis.com/" + bucketName;
    HttpRequest request = requestFactory.buildGetRequest(new GenericUrl(bucketUri + "?marker=" + startKey));
    HttpResponse response = request.execute();

    try {//from  w  w w .  j  a v  a 2  s . c o m
        Document responseDoc = DocumentBuilderFactory.newInstance().newDocumentBuilder()
                .parse(response.getContent());
        XPath xPath = XPathFactory.newInstance().newXPath();
        NodeList nodes = (NodeList) xPath.evaluate("//Contents/Key/text()", responseDoc,
                XPathConstants.NODESET);
        for (int i = 0; i < nodes.getLength(); i++) {
            String key = nodes.item(i).getNodeValue();
            if (key.compareTo(endKey) >= 0) {
                break;
            }
            if (key.endsWith(".schema.json")) {
                continue;
            }
            result.add("gs://" + bucketName + "/" + key);
        }
    } catch (SAXException e) {
        throw new IOException("Error parsing cloud storage response", e);
    } catch (ParserConfigurationException e) {
        throw new IOException("Error configuring cloud storage parser", e);
    } catch (XPathExpressionException e) {
        throw new IOException("Error finding keys", e);
    }

    return result;
}

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From source file:com.cisco.dvbu.ps.common.adapters.config.AdapterConfig.java

private void parseAdapterCommon(Document doc) throws AdapterException {
    log.debug("Root element :" + doc.getDocumentElement().getNodeName());
    XPath xpath = XPathFactory.newInstance().newXPath();
    try {/* w  w w  .j  a  v a 2s  . co m*/
        Attr a = (Attr) xpath.evaluate(AdapterConstants.XPATH_CONFIG_VERSION, doc, XPathConstants.NODE);
        log.debug(a.getName() + ": " + a.getValue());
        Element e = (Element) xpath.evaluate(AdapterConstants.XPATH_NAME, doc, XPathConstants.NODE);
        name = e.getTextContent();
        log.debug(e.getNodeName() + ": " + e.getTextContent());
        e = (Element) xpath.evaluate(AdapterConstants.XPATH_DESC, doc, XPathConstants.NODE);
        desc = e.getTextContent();
        log.debug(e.getNodeName() + ": " + e.getTextContent());
        e = (Element) xpath.evaluate(AdapterConstants.XPATH_CIS_VERSION, doc, XPathConstants.NODE);
        cisVersion = e.getTextContent();
        log.debug(e.getNodeName() + ": " + e.getTextContent());
        e = (Element) xpath.evaluate(AdapterConstants.XPATH_CONN_RETRYATTMPTS, doc, XPathConstants.NODE);
        retryAttempts = (e != null && e.getTextContent() != null) ? Integer.parseInt(e.getTextContent()) : -1;
        log.debug("retryAttempts: " + retryAttempts);
        e = (Element) xpath.evaluate(AdapterConstants.XPATH_CONN_MAXCLIENTS, doc, XPathConstants.NODE);
        maxClients = (e != null && e.getTextContent() != null) ? Integer.parseInt(e.getTextContent()) : -1;
        log.debug("maxclients: " + maxClients);
        e = (Element) xpath.evaluate(AdapterConstants.XPATH_CONN_MINCLIENTS, doc, XPathConstants.NODE);
        minClients = (e != null && e.getTextContent() != null) ? Integer.parseInt(e.getTextContent()) : -1;
        log.debug("minclients: " + minClients);
    } catch (Exception e) {
        log.error("Configuration File Error! One or more mandatory configuration options are missing");
        throw new AdapterException(302,
                "Configuration File Error! One or more mandatory configuration options are missing.", e);
    }
}

---

From source file:org.apache.camel.component.social.providers.twitter.AbstractTwitterPath.java

AbstractTwitterPath(TwitterProvider twitterProvider, String path) throws Exception {
    this.path = path;
    this.provider = twitterProvider;

    domFac = DocumentBuilderFactory.newInstance();
    factory = XPathFactory.newInstance();
    xpath = factory.newXPath();//from ww w  .  ja va  2  s  .c o  m
    transformer = TransformerFactory.newInstance().newTransformer();
}

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From source file:com.cordys.coe.ac.httpconnector.samples.JIRAResponseHandler.java

/**
 * This method checks the HTML for errors during processing.
 * //from   w  w w  .  j  ava2s. c o m
 * @param document
 *            The HTML document.
 * @param httpMethod
 *            The actual HTTP method that was executed.
 * 
 * @throws HandlerException
 *             In case the response contains any functional errors.
 * @throws XPathExpressionException
 *             In case one of the XPaths fail.
 */
protected void checkErrors(org.w3c.dom.Document document, HttpMethod httpMethod)
        throws HandlerException, XPathExpressionException {
    XPath xpath = XPathFactory.newInstance().newXPath();
    NodeList nodeList = (NodeList) xpath.evaluate("//span[@class='errMsg']/text()", document,
            XPathConstants.NODESET);
    int length = nodeList.getLength();

    if (length != 0) {
        // The first error message found will be used.
        HandlerException he = new HandlerException(
                HandlerExceptionMessages.ERROR_CONVERTING_THE_RESPONSE_TO_PROPER_XML,
                nodeList.item(0).getNodeValue());

        for (int i = 0; i < length; i++) {
            Node node = nodeList.item(i);
            he.addAdditionalErrorMessage(node.getNodeValue());
        }
        throw he;
    }

    // There is another possibility of which errors might be returned. There
    // is a td with
    // class formErrors. And it that holds the errors as list items.
    nodeList = (NodeList) xpath.evaluate("//td[@class='formErrors']/div[@class='errorArea']/ul/li/text()",
            document, XPathConstants.NODESET);
    length = nodeList.getLength();

    if (length != 0) {
        // The first error message found will be used.
        HandlerException he = new HandlerException(
                HandlerExceptionMessages.ERROR_CONVERTING_THE_RESPONSE_TO_PROPER_XML,
                nodeList.item(0).getNodeValue());

        for (int i = 0; i < length; i++) {
            Node node = nodeList.item(i);
            he.addAdditionalErrorMessage(node.getNodeValue());
        }
        throw he;
    }

    if (httpMethod.getStatusCode() == 500) {
        // Find the short description
        Node n = (Node) xpath.evaluate("//b[.='Cause: ']", document, XPathConstants.NODE);
        String shortError = n.getNextSibling().getNextSibling().getNodeValue().trim();

        // The first error message found will be used.
        HandlerException he = new HandlerException(
                HandlerExceptionMessages.ERROR_CONVERTING_THE_RESPONSE_TO_PROPER_XML,
                "System Error: " + shortError);

        // Find the stacktrace if available.
        he.addAdditionalErrorMessage(
                (String) xpath.evaluate("//pre[@id='stacktrace']/text()", document, XPathConstants.STRING));

        throw he;
    }
}

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