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:com.dianping.zebra.shard.jdbc.base.SingleDBBaseTestCase.java

protected void parseCreateTableScriptFile() throws Exception {
    DocumentBuilderFactory factory = DocumentBuilderFactory.newInstance();
    DocumentBuilder builder = factory.newDocumentBuilder();
    Document configDoc = builder/*from www  .j  a v a  2  s .  c  om*/
            .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);
    }
}

From source file:jGPIO.DTO.java

/**
 * Tries to use lshw to detect the physical system in use.
 * /*from  w  ww  . j  a v  a 2s  . com*/
 * @return The filename of the GPIO Definitions file.
 */
static private String autoDetectSystemFile() {
    String definitions = System.getProperty("definitions.lookup");
    if (definitions == null) {
        definitions = DEFAULT_DEFINITIONS;
    }

    File capabilitiesFile = new File(definitions);

    // If it doesn't exist, fall back to the default
    if (!capabilitiesFile.exists() && !definitions.equals(DEFAULT_DEFINITIONS)) {
        System.out.println("Could not find definitions lookup file at: " + definitions);
        System.out.println("Trying default definitions file at: " + definitions);
        capabilitiesFile = new File(DEFAULT_DEFINITIONS);
    }

    if (!capabilitiesFile.exists()) {
        System.out.println("Could not find definitions file at: " + definitions);
        return null;
    }

    DocumentBuilderFactory dbFactory = DocumentBuilderFactory.newInstance();
    DocumentBuilder dBuilder = null;
    try {
        dBuilder = dbFactory.newDocumentBuilder();
    } catch (ParserConfigurationException e1) {
        e1.printStackTrace();
    }

    // Generate the lshw output if available
    Process lshw;
    try {
        lshw = Runtime.getRuntime().exec("lshw -c bus -disable dmi -xml");
        lshw.waitFor();
    } catch (Exception e1) {
        System.out.println("Couldn't execute lshw to identify board");
        e1.printStackTrace();
        return null;
    }
    Document lshwXML = null;
    try {
        lshwXML = dBuilder.parse(lshw.getInputStream());
    } catch (IOException e1) {
        System.out.println("IO Exception running lshw");
        e1.printStackTrace();
        return null;
    } catch (SAXException e1) {
        System.out.println("Could not parse lshw output");
        e1.printStackTrace();
        return null;
    }

    XPath xp = XPathFactory.newInstance().newXPath();
    NodeList capabilities;
    try {
        capabilities = (NodeList) xp.evaluate("/list/node[@id=\"core\"]/capabilities/capability", lshwXML,
                XPathConstants.NODESET);
    } catch (XPathExpressionException e1) {
        System.out.println("Couldn't run Caoability lookup");
        e1.printStackTrace();
        return null;
    }

    Document lookupDocument = null;
    try {
        lookupDocument = dBuilder.parse(capabilitiesFile);
        String lookupID = null;

        for (int i = 0; i < capabilities.getLength(); i++) {
            Node c = capabilities.item(i);
            lookupID = c.getAttributes().getNamedItem("id").getNodeValue();
            System.out.println("Looking for: " + lookupID);
            NodeList nl = (NodeList) xp.evaluate("/lookup/capability[@id=\"" + lookupID + "\"]", lookupDocument,
                    XPathConstants.NODESET);

            if (nl.getLength() == 1) {
                definitionFile = nl.item(0).getAttributes().getNamedItem("file").getNodeValue();
                pinDefinitions = (JSONArray) new JSONParser().parse(new FileReader(definitionFile));
                return definitionFile;
            }
        }
    } catch (Exception e) {
        e.printStackTrace();
    }
    return null;
}

From source file:com.vmware.o11n.plugin.powershell.model.RemotePsType.java

private void initDomDocument() {
    if (doc == null && xml != null) {
        DocumentBuilderFactory domFactory = DocumentBuilderFactory.newInstance();
        //            domFactory.setNamespaceAware(true); // never forget this!
        DocumentBuilder builder;/*from  ww  w.  j  av  a  2s.c  o m*/
        try {
            builder = domFactory.newDocumentBuilder();
            doc = builder.parse(IOUtils.toInputStream(xml));
        } catch (ParserConfigurationException e) {
            throw new PowerShellException(e.getMessage(), e);
        } catch (SAXException e) {
            throw new PowerShellException(e.getMessage(), e);
        } catch (IOException e) {
            throw new PowerShellException(e.getMessage(), e);
        }

        xpathFactory = XPathFactory.newInstance();
    }

}

From source file:de.tudarmstadt.ukp.dkpro.core.io.xml.XmlReaderXPath.java

@Override
public void initialize(UimaContext arg0) throws ResourceInitializationException {
    super.initialize(arg0);

    fileIterator = getFileSetIterator();
    XPath xpath = XPathFactory.newInstance().newXPath();
    nodes = new ArrayDeque<Node>();

    if (StringUtils.isWhitespace(rootXPath)) {
        throw new IllegalArgumentException("Illegal root XPath expression. Please provide a valid one.");
    }/*from  w  w  w.  j  a  va 2 s  . c  o m*/
    try {
        compiledRootXPath = xpath.compile(rootXPath);
    } catch (XPathExpressionException e) {
        throw new IllegalArgumentException("Illegal root XPath expression. Please provide a valid one.");
    }

    if (docIdTag != null) {
        if (StringUtils.isWhitespace(docIdTag)) {
            throw new IllegalArgumentException("Illegal ID XPath expression. Please provide a valid one.");
        }
        try {
            compiledIdXPath = xpath.compile(docIdTag);
        } catch (XPathExpressionException e) {
            throw new IllegalArgumentException("Illegal ID XPath expression. Please provide a valid one.");
        }
    }

    // Substitution
    if (substituteTags != null && substituteTags.length > 0) {
        if (substituteTags.length % 2 != 0) {
            throw new IllegalArgumentException("Parameter substitute tags must "
                    + "be given in an array of even number of elements, in 'before, after' order");
        }

        useSubstitution = true;
        substitution = new HashMap<String, String>(substituteTags.length);
        for (int i = 0; i < substituteTags.length; i += 2) {
            substitution.put(substituteTags[i], substituteTags[i + 1]);
        }
    }

    processNextFile();
}