Examples of org.jdom.xpath.XPath.selectSingleNode()

org.jdom.xpath.XPath.selectSingleNode()
Evaluates the wrapped XPath expression and returns the first entry in the list of selected nodes (or atomics). @param context the node to use as context for evaluatingthe XPath expression. @return the first selected item, which may be of types: {@link Element}, {@link Attribute}, {@link Text}, {@link CDATA}, {@link Comment}, {@link ProcessingInstruction}, Boolean, Double, String, or null if no item was selected. @throws JDOMException if the evaluation of the XPathexpression on the specified context failed.

          return QueryResult.createCorrectQuery(
              pageId, xpaPageTitle.valueOf(node),
              pageOldRevId, pageNewRevId);
        } else if ("Failure".equalsIgnoreCase(result)) {
          XPath xpaCaptcha = XPath.newInstance("./captcha");
          Element captcha = (Element) xpaCaptcha.selectSingleNode(node);
          if (captcha != null) {
            XPath xpaType = XPath.newInstance("./@type");
            CaptchaException exception = new CaptchaException("Captcha", xpaType.valueOf(captcha));
            XPath xpaMime = XPath.newInstance("./@mime");
            exception.setMime(xpaMime.valueOf(captcha));

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      throw new APIException("Page is null");
    }
    boolean redirect = false;
    try {
      XPath xpaPage = XPath.newInstance(query);
      Element node = (Element) xpaPage.selectSingleNode(root);
      if (node != null) {
        XPath xpaNamespace = XPath.newInstance("./@ns");
        page.setNamespace(xpaNamespace.valueOf(node));
        if (node.getAttribute("redirect") != null) {
          redirect = true;

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        page.setPageId(xpaPageId.valueOf(node));
        XPath xpaStartTimestamp = XPath.newInstance("./@starttimestamp");
        page.setStartTimestamp(xpaStartTimestamp.valueOf(node));
      }
      XPath xpa = XPath.newInstance(query + "/revisions/rev");
      node = (Element) xpa.selectSingleNode(root);
      if (node != null) {
        XPath xpaContents = XPath.newInstance(".");
        XPath xpaRevision = XPath.newInstance("./@revid");
        XPath xpaTimestamp = XPath.newInstance("./@timestamp");
        page.setContents(xpaContents.valueOf(node));

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      page.setExisting(Boolean.FALSE);
    }


    // Retrieve protection information
    XPath xpaProtection = XPath.newInstance("protection/pr[@type=\"edit\"]");
    Element protectionNode = (Element) xpaProtection.selectSingleNode(node);
    if (protectionNode != null) {
      XPath xpaLevel = XPath.newInstance("./@level");
      page.setEditProtectionLevel(xpaLevel.valueOf(protectionNode));
    }
  }

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    XPath xpaFrom = XPath.newInstance("./@from");
    XPath xpaTo = XPath.newInstance("./@to");


    // Retrieving pages
    XPath xpaPages = XPath.newInstance("/api/query/pages");
    Element listPages = (Element) xpaPages.selectSingleNode(root);
    XPath xpaPageId = XPath.newInstance("./@pageid");
    XPath xpaNamespace = XPath.newInstance("./@ns");
    XPath xpaTitle = XPath.newInstance("./@title");


    // Retrieving normalization information

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      Iterator<Page> itPage = p.getRedirectIteratorWithPage();
      while (itPage.hasNext()) {
        Page tmp = itPage.next();
        String title = getNormalizedTitle(tmp.getTitle(), normalization);
        XPath xpaPage = createXPath("page", "title", title);
        Element page = (Element) xpaPage.selectSingleNode(listPages);
        if (page != null) {
          List pageId = xpaPageId.selectNodes(page);
          if ((pageId != null) && (!pageId.isEmpty())) {
            tmp.setExisting(Boolean.TRUE);
          } else {

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      Element root = getRoot(properties, ApiRequest.MAX_ATTEMPTS);
      WikiConfiguration wikiConfiguration = getWiki().getWikiConfiguration();


      // Retrieve general information
      XPath xpa = XPath.newInstance("/api/query/general");
      Element generalNode = (Element) xpa.selectSingleNode(root);
      if (generalNode != null) {
        wikiConfiguration.setArticlePath(generalNode.getAttributeValue("articlepath"));
        wikiConfiguration.setScript(generalNode.getAttributeValue("script"));
        wikiConfiguration.setServer(generalNode.getAttributeValue("server"));
      }

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        }
      }


      // Retrieve revision id
      XPath xpaPage = XPath.newInstance("/api/parse");
      Element parseNode = (Element) xpaPage.selectSingleNode(root);
      if ((parseNode != null) && (parseNode.getAttributeValue("revid") != null)) {
        page.setRevisionId(parseNode.getAttributeValue("revid"));
      }


      return result;

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              updatePageInformation(pageNode, page);
  
              // Retrieve revisions
              if (!Boolean.FALSE.equals(page.isExisting())) {
                XPath xpaRevisions = XPath.newInstance("revisions/rev");
                Element revNode = (Element) xpaRevisions.selectSingleNode(pageNode);
                if (revNode != null) {
                  page.setContents(revNode.getText());
                  page.setExisting(Boolean.TRUE);
                  page.setRevisionId(revNode.getAttributeValue("revid"));
                  page.setContentsTimestamp(revNode.getAttributeValue("timestamp"));

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    }


    private Element getMatch(Object doc, String xpath) {
        try {
            XPath path = XPath.newInstance(xpath);
            return (Element)path.selectSingleNode(doc);
        } catch (JDOMException e) {
            throw new DatabindingException("Error evaluating xpath " + xpath, e);
        }
    }

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