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:org.apereo.portal.layout.simple.SimpleLayout.java

@Override
public Enumeration getNodeIds() throws PortalException {
    Vector v = new Vector();
    try {//from w  w  w  .  j a va  2s  .  c o m
        String expression = "*";
        XPathFactory fac = XPathFactory.newInstance();
        XPath xpath = fac.newXPath();
        NodeList nl = (NodeList) xpath.evaluate(expression, layout, XPathConstants.NODESET);
        for (int i = 0; i < nl.getLength(); i++) {
            Node node = nl.item(i);
            if (node.getNodeType() == Node.ELEMENT_NODE) {
                Element e = (Element) node;
                v.add(e.getAttribute("ID"));
            }
        }
    } catch (Exception e) {
        log.error("Exception getting node ids.", e);
    }
    return v.elements();
}

From source file:org.apereo.portal.layout.simple.SimpleLayout.java

@Override
public String getRootId() {
    String rootNode = null;//  ww w . j a va 2 s .  c  o  m
    try {

        String expression = "/layout/folder";
        XPathFactory fac = XPathFactory.newInstance();
        XPath xpath = fac.newXPath();
        Element rootNodeE = (Element) xpath.evaluate(expression, layout, XPathConstants.NODE);

        rootNode = rootNodeE.getAttribute("ID");
    } catch (Exception e) {
        log.error("Error getting root id.", e);
    }
    return rootNode;
}

From source file:org.apereo.portal.portlets.marketplace.PortletMarketplaceController.java

private List<PortletTab> getPortletTabInfo(DistributedUserLayout layout, String fname) {
    final String XPATH_TAB = "/layout/folder/folder[@hidden = 'false' and @type = 'regular']";
    final String XPATH_COUNT_COLUMNS = "count(./folder[@hidden = \"false\"])";
    final String XPATH_COUNT_NON_EDITABLE_COLUMNS = "count(./folder[@hidden = \"false\" and @*[local-name() = \"editAllowed\"] = \"false\"])";
    final String XPATH_GET_TAB_PORTLET_FMT = ".//channel[@hidden = \"false\" and @fname = \"%s\"]";

    Document doc = layout.getLayout();

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

    try {// w  w w .j a  va  2s .  c o  m
        XPathExpression tabExpr = xpath.compile(XPATH_TAB);
        NodeList list = (NodeList) tabExpr.evaluate(doc, XPathConstants.NODESET);

        // Count columns and non-editable columns...
        XPathExpression columnCountExpr = xpath.compile(XPATH_COUNT_COLUMNS);
        XPathExpression nonEditableCountExpr = xpath.compile(XPATH_COUNT_NON_EDITABLE_COLUMNS);

        // get the list of tabs...
        String xpathStr = format(XPATH_GET_TAB_PORTLET_FMT, fname);
        XPathExpression portletExpr = xpath.compile(xpathStr);

        List<PortletTab> tabs = new ArrayList<>();
        for (int i = 0; i < list.getLength(); i++) {
            Node tab = list.item(i);
            String tabName = ((Element) tab).getAttribute("name");
            String tabId = ((Element) tab).getAttribute("ID");

            // check if tab is editable...
            Number columns = (Number) columnCountExpr.evaluate(tab, XPathConstants.NUMBER);
            Number nonEditColumns = (Number) nonEditableCountExpr.evaluate(tab, XPathConstants.NUMBER);
            // tab is not editable...  skip it...
            if (columns.intValue() > 0 && columns.intValue() == nonEditColumns.intValue()) {
                continue;
            }

            // get all instances of this portlet on this tab...
            List<String> layoutIds = new ArrayList<>();
            NodeList fnameListPerTab = (NodeList) portletExpr.evaluate(tab, XPathConstants.NODESET);
            for (int j = 0; j < fnameListPerTab.getLength(); j++) {
                Node channel = fnameListPerTab.item(j);

                String layoutId = ((Element) channel).getAttribute("ID");
                layoutIds.add(layoutId);
            }

            PortletTab tabInfo = new PortletTab(tabName, tabId, layoutIds);
            tabs.add(tabInfo);
        }

        return tabs;

    } catch (XPathExpressionException e) {
        logger.error("Error evaluating xpath", e);
    }

    return null;
}

From source file:org.apereo.portal.xml.XmlUtilitiesImplTest.java

@Test
public void testGetUniqueXPath() throws Exception {
    final Document testDoc = loadTestDocument();

    final XPathFactory xPathFactory = XPathFactory.newInstance();
    final XPath xPath = xPathFactory.newXPath();
    final XPathExpression xPathExpression = xPath.compile("//*[@ID='11']");

    final Node node = (Node) xPathExpression.evaluate(testDoc, XPathConstants.NODE);

    final XmlUtilitiesImpl xmlUtilities = new XmlUtilitiesImpl();
    final String nodePath = xmlUtilities.getUniqueXPath(node);

    assertEquals("/layout/folder[2]/folder[3]", nodePath);
}

From source file:org.artifactory.webapp.wicket.util.DescriptionExtractor.java

private String executeQuery(String query) {
    try {//  w ww  .j a  va2 s .  c o  m
        XPathFactory xFactory = XPathFactory.newInstance();
        XPath xpath = xFactory.newXPath();
        xpath.setNamespaceContext(new SchemaNamespaceContext());
        XPathExpression expr = xpath.compile(query);
        Object description = expr.evaluate(doc, XPathConstants.STRING);
        return description.toString().trim();
    } catch (XPathExpressionException e) {
        throw new RuntimeException("Failed to execute xpath query: " + query, e);
    }
}

From source file:org.asqatasun.processor.DOMHandlerImpl.java

private void initialize() {
    if (docInitialised) {
        return;//www  .  jav  a 2 s . c  o m
    }
    XPathFactory xPathfactory = XPathFactory.newInstance();
    xpath = xPathfactory.newXPath();

    try {

        DocumentBuilderFactory factory = DocumentBuilderFactory.newInstance();
        factory.setFeature("http://apache.org/xml/features/nonvalidating/load-external-dtd", false);
        //@TODO verify the namespace property is necessary in our context
        //            factory.setNamespaceAware(true);
        DocumentBuilder builder = factory.newDocumentBuilder();
        document = builder.parse(new ByteArrayInputStream(ssp.getDOM().getBytes("UTF-8")));
        docInitialised = true;
    } catch (IOException ex) {
        LOGGER.error(ssp.getURI() + "cannot be initialised due to " + ex.getMessage());
        throw new RuntimeException(ex);
    } catch (SAXException ex) {
        LOGGER.error(ssp.getURI() + "cannot be initialised due to " + ex.getMessage());
        throw new RuntimeException(ex);
    } catch (ParserConfigurationException ex) {
        LOGGER.error(ssp.getURI() + "cannot be initialised due to " + ex.getMessage());
        throw new RuntimeException(ex);
    }
    processRemarkService.initializeService(document, ssp.getDOM());
}

From source file:org.atricore.idbus.capabilities.sso.support.core.signature.JSR105SamlR2SignerImpl.java

protected NodeList evaluateXPath(Document doc, String expression) throws SamlR2SignatureException {
    XPathFactory factory = XPathFactory.newInstance();
    XPath xpath = factory.newXPath();
    xpath.setNamespaceContext(getNamespaceContext());

    NodeList nl;//from   w  w  w.  j  a  v  a 2  s .  co  m
    try {
        XPathExpression expr = xpath.compile(expression);

        nl = (NodeList) expr.evaluate(doc, XPathConstants.NODESET);
    } catch (XPathExpressionException e) {
        throw new SamlR2SignatureException(e);
    }

    return nl;
}

From source file:org.auscope.gridtools.RegistryQueryClient.java

/**
 * Runs an XPath query on the local (cached) MDS file.
 * //  w  w  w.  j  a v  a2s.co  m
 * @param query The XPath query to run
 * @return A <code>NodeList</code> containing the nodes/elements selected
 *         by the query or null on error.
 */
private NodeList turboMDSquery(String query) {
    checkCache();

    NodeList myNodeList = null;
    XPathFactory xPath = XPathFactory.newInstance();

    try {
        InputSource inpXml = new InputSource(MDS_CACHE_FILE);
        myNodeList = (NodeList) xPath.newXPath().evaluate(query, inpXml, XPathConstants.NODESET);
    } catch (Exception e) {
        logger.error(e.getMessage());
    }

    return myNodeList;
}

From source file:org.broadleafcommerce.common.extensibility.context.merge.MergePoint.java

public MergePoint(MergeHandler handler, Document doc1, Document doc2) {
    this.handler = handler;
    this.doc1 = doc1;
    this.doc2 = doc2;
    XPathFactory factory = XPathFactory.newInstance();
    xPath = factory.newXPath();
}

From source file:org.codice.ddf.security.interceptor.AnonymousInterceptor.java

private String retrieveXmlValue(String xml, String xpathStmt) {
    String result = null;//from  w w w  .  j av a2s .  c  om
    Document document = createDocument(xml);
    XPathFactory xFactory = XPathFactory.newInstance();
    XPath xpath = xFactory.newXPath();

    try {
        XPathExpression expr = xpath.compile(xpathStmt);
        result = (String) expr.evaluate(document, XPathConstants.STRING);
    } catch (XPathExpressionException e) {
        LOGGER.warn("Error processing XPath statement on policy XML.");
    }
    return result;
}