Example usage for org.dom4j XPath selectSingleNode

List of usage examples for org.dom4j XPath selectSingleNode

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Introduction

In this page you can find the example usage for org.dom4j XPath selectSingleNode.

Prototype

Node selectSingleNode(Object context);

Source Link

Document

selectSingleNode evaluates this XPath expression on the given Node or List of Node s and returns the result as a single Node instance.

Usage

From source file:org.codehaus.modello.plugin.utils.Dom4jUtils.java

License:Apache License

/**
 * Asserts <b>non-existence</b> of an element specified by an XPATH
 * expression in the target {@link Document}.
 * //from ww w . j  ava2  s  . c om
 * @param doc target {@link Document} instance where the element is to be
 *            verified.
 * @param xpathToNode XPATH expression to locate the element.
 */
public static void assertElementNotExists(Document doc, String xpathToNode) {
    if (StringUtils.isEmpty(xpathToNode)) {
        throw new AssertionFailedError("Unable to assert an attribute using an empty xpath.");
    }

    if (doc == null) {
        throw new AssertionFailedError("Unable to assert an attribute using a null document.");
    }

    XPath xpath = doc.createXPath(xpathToNode);

    Node node = xpath.selectSingleNode(doc);

    if (node != null) {
        throw new AssertionFailedError("Element at '" + xpathToNode + "' should not exist.");
    }

    // In case node returns something other than an element.
}

From source file:org.codehaus.modello.plugin.utils.Dom4jUtils.java

License:Apache License

/**
 * Locates and returns ther {@link Element} specified by a passed in XPATH
 * expression in a target {@link Document}.
 * /*  www.  j a  v  a2  s.  c  om*/
 * @param doc target {@link Document} instance where the element is to be
 *            located.
 * @param xpathToNode XPATH expression to locate the element.
 * @return {@link Element} instance that matches the XPATH expression. An
 *         {@link AssertionFailedError} is thrown if no matching Element was
 *         found.
 */
public static Element findElement(Document doc, String xpathToNode) {
    if (StringUtils.isEmpty(xpathToNode)) {
        throw new AssertionFailedError("Unable to assert an attribute using an empty xpath.");
    }

    if (doc == null) {
        throw new AssertionFailedError("Unable to assert an attribute using a null document.");
    }

    XPath xpath = doc.createXPath(xpathToNode);

    Node node = xpath.selectSingleNode(doc);

    if (node == null) {
        throw new AssertionFailedError("Expected Node at '" + xpathToNode + "', but was not found.");
    }

    if (node.getNodeType() != Node.ELEMENT_NODE) {
        throw new AssertionFailedError("Node at '" + xpathToNode + "' is not an xml element.");
    }

    return (Element) node;
}

From source file:org.craftercms.core.util.XmlUtils.java

License:Open Source License

/**
 * Executes the specified namespace aware XPath query as a single node query, returning the resulting single node.
 *//*from  w  w  w.  java  2 s.  c o  m*/
public static Node selectSingleNode(Node node, String xpathQuery, Map<String, String> namespaceUris) {
    XPath xpath = DocumentHelper.createXPath(xpathQuery);
    xpath.setNamespaceURIs(namespaceUris);

    return xpath.selectSingleNode(node);
}

From source file:org.danann.cernunnos.xml.SingleNodePhrase.java

License:Apache License

public Object evaluate(TaskRequest req, TaskResponse res) {

    Node src = (Node) source.evaluate(req, res);
    final String xpathExpresion = (String) this.xpath.evaluate(req, res);
    final XPath xpath = this.xpathCache.getCachedObject(req, res, xpathExpresion, XPathCacheFactory.INSTANCE);
    try {/*from   w w w. jav a 2s  .  c o m*/
        xpath.setVariableContext(new RequestVariableContext(req));
        return xpath.selectSingleNode(src);
    } finally {
        xpath.setVariableContext(null);
    }
}

From source file:org.etudes.component.app.melete.MeleteImportServiceImpl.java

License:Apache License

/**
 * Parses the manifest and build modules
 *
 * @param document document//from  ww w  .  j a  v  a 2 s .  c om
 * @param unZippedDirPath unZipped fiels Directory Path
 * @exception throws exception
 */
public void parseAndBuildModules(Document document, String unZippedDirPath) throws Exception {
    if (logger.isDebugEnabled())
        logger.debug("Entering parseAndBuildModules");

    Map uris = new HashMap();
    uris.put("imscp", DEFAULT_NAMESPACE_URI);
    uris.put("imsmd", IMSMD_NAMESPACE_URI);

    // organizations
    XPath xpath = document.createXPath("/imscp:manifest/imscp:organizations/imscp:organization");
    xpath.setNamespaceURIs(uris);

    Element eleOrg = (Element) xpath.selectSingleNode(document);

    // build module
    // loop thru organization elements - item elements
    if (eleOrg != null) {
        importThreadLocal.set("MeleteIMSImportFiles", new HashSet<String>());
        List elements = eleOrg.elements();
        for (Iterator iter = eleOrg.elementIterator("item"); iter.hasNext();) {
            Element element = (Element) iter.next();
            // for moodle packages which don't have parent item tag for modules.
            Element blankElement = checkModuleItem(element, eleOrg);
            if (blankElement != null) {
                buildModule(blankElement, document, unZippedDirPath,
                        ToolManager.getCurrentPlacement().getContext());
                break;
            } else
                buildModule(element, document, unZippedDirPath, ToolManager.getCurrentPlacement().getContext());
        }
    }

    xpath = document.createXPath("/imscp:manifest/imscp:resources");
    xpath.setNamespaceURIs(uris);

    Element eleResource = (Element) xpath.selectSingleNode(document);
    if (eleResource != null)
        processManageItems(eleResource, unZippedDirPath, ToolManager.getCurrentPlacement().getContext(),
                document);

    if (logger.isDebugEnabled())
        logger.debug("Exiting parseAndBuildModules");
}

From source file:org.etudes.component.app.melete.MeleteImportServiceImpl.java

License:Apache License

private Element getResource(String resName, Document document) throws Exception {
    if (logger.isDebugEnabled())
        logger.debug("Entering getResource...");

    Map uris = new HashMap();
    uris.put("imscp", DEFAULT_NAMESPACE_URI);
    uris.put("imsmd", IMSMD_NAMESPACE_URI);

    //resource//from  w ww  .  java 2 s.c  o  m
    XPath xpath = document
            .createXPath("/imscp:manifest/imscp:resources/imscp:resource[@identifier = '" + resName + "']");
    xpath.setNamespaceURIs(uris);

    Element eleRes = (Element) xpath.selectSingleNode(document);

    if (logger.isDebugEnabled())
        logger.debug("Exiting getResource...");

    return eleRes;
}

From source file:org.etudes.component.app.melete.MeleteImportServiceImpl.java

License:Apache License

private Element getMergeResource(String resName, Document document) throws Exception {
    if (logger.isDebugEnabled())
        logger.debug("Entering getResource...");

    Map uris = new HashMap();
    uris.put("imscp", DEFAULT_NAMESPACE_URI);
    uris.put("imsmd", IMSMD_NAMESPACE_URI);

    // resource/*from w ww . j  a  v  a  2s.  c om*/
    XPath xpath = document.createXPath("//resource[@identifier = '" + resName + "']");
    xpath.setNamespaceURIs(uris);

    Element eleRes = (Element) xpath.selectSingleNode(document);

    if (logger.isDebugEnabled())
        logger.debug("Exiting getResource...");

    return eleRes;
}

From source file:org.etudes.component.app.melete.MeleteImportServiceImpl.java

License:Apache License

public String getContentSourceInfo(Document document) {
    Map uris = new HashMap();
    uris.put("imscp", DEFAULT_NAMESPACE_URI);
    uris.put("imsmd", IMSMD_NAMESPACE_URI);

    try {// w w w  . jav a 2 s. co m
        // description
        XPath xpath = document
                .createXPath("/imscp:manifest/imscp:metadata/imsmd:lom/imsmd:rights/imsmd:description");
        xpath.setNamespaceURIs(uris);

        Element eleOrg = (Element) xpath.selectSingleNode(document);
        if (eleOrg != null) {
            // logger.debug("got desc element" + eleOrg.toString());
            return eleOrg.selectSingleNode(".//imsmd:langstring").getText();
        } else
            return null;
    } catch (Exception e) {
        logger.debug("error in reading other contact info" + e.toString());
        return null;
    }
}

From source file:org.etudes.jforum.view.admin.ImportExportAction.java

License:Apache License

/**
 * Parses the manifest and build topics// ww  w  .  j a v  a  2  s .c o  m
 * 
 * @param document
 *            document
 * @param unZippedDirPath
 *            unZipped files Directory Path
 * @exception throws exception
 */
public void parseAndCreateTopics(Document document, String unZippedDirPath) throws Exception {
    if (logger.isDebugEnabled())
        logger.debug("Entering parseAndCreateTopics");

    boolean isfacilitator = JForumUserUtil.isJForumFacilitator(UserDirectoryService.getCurrentUser().getId())
            || SecurityService.isSuperUser();

    if (!isfacilitator) {
        this.context.put("message", I18n.getMessage("User.NotAuthorizedToManage"));
        this.setTemplateName(TemplateKeys.MANAGE_NOT_AUTHORIZED);
        return;
    }

    // get current site
    Site site = SiteService.getSite(ToolManager.getCurrentPlacement().getContext());
    Collection sakaiSiteGroups = site.getGroups();

    Map uris = new HashMap();
    uris.put("imscp", DEFAULT_NAMESPACE_URI);
    uris.put("imsmd", IMSMD_NAMESPACE_URI);

    // organizations
    XPath xpath = document.createXPath("/imscp:manifest/imscp:organizations/imscp:organization");
    xpath.setNamespaceURIs(uris);

    Element eleOrg = (Element) xpath.selectSingleNode(document);

    // create category, forum if not existing and then add task topics of
    // the forum
    // loop thru organization elements - item elements(category)
    List elements = eleOrg.elements();
    for (Iterator iter = elements.iterator(); iter.hasNext();) {
        Element element = (Element) iter.next();
        if (element.getName().equalsIgnoreCase("item")) {
            processXML(element, document, unZippedDirPath);
        }

    }

    if (logger.isDebugEnabled())
        logger.debug("Exiting parseAndCreateTopics");
}

From source file:org.etudes.jforum.view.admin.ImportExportAction.java

License:Apache License

/**
 * gets the resource element//from   w w  w.  jav  a 2  s.  com
 * 
 * @param resName
 *            resource name
 * @param document
 *            document
 * @return resource element
 * @throws Exception
 */
private Element getResource(String resName, Document document) throws Exception {
    if (logger.isDebugEnabled())
        logger.debug("Entering getResource...");

    Map uris = new HashMap();
    uris.put("imscp", DEFAULT_NAMESPACE_URI);
    uris.put("imsmd", IMSMD_NAMESPACE_URI);

    // resource
    XPath xpath = document
            .createXPath("/imscp:manifest/imscp:resources/imscp:resource[@identifier = '" + resName + "']");
    xpath.setNamespaceURIs(uris);

    Element eleRes = (Element) xpath.selectSingleNode(document);

    if (logger.isDebugEnabled())
        logger.debug("Exiting getResource...");

    return eleRes;
}