private static void init()

in tobago-core/src/main/java/org/apache/myfaces/tobago/util/WebXmlUtils.java [78:133]
47 lines of code
15 McCabe index (conditional complexity)

  private static void init() {
    final FacesContext facesContext = FacesContext.getCurrentInstance();
    final ExternalContext externalContext = facesContext.getExternalContext();

    try {
      final List<Document> webXmls = getWebXmls(facesContext);

      String locationDefault = null;
      String location500 = null;

      for (final Document document : webXmls) {
        if (document != null) {
          final NodeList errorPages = document.getElementsByTagName("error-page");

          for (int i = 0; i < errorPages.getLength(); i++) {
            final Node errorPage = errorPages.item(i);

            String errorCode = null;
            String exceptionType = null;
            String location = null;

            final NodeList children = errorPage.getChildNodes();
            for (int j = 0; j < children.getLength(); j++) {
              final Node child = children.item(j);
              final String name = child.getNodeName();

              if ("error-code".equals(name)) {
                errorCode = child.getFirstChild().getNodeValue().trim();
              } else if ("exception-type".equals(name)) {
                exceptionType = child.getFirstChild().getNodeValue().trim();
              } else if ("location".equals(name)) {
                location = child.getFirstChild().getNodeValue().trim();
              }
            }

            if (exceptionType != null) {
              final Class<Throwable> key = (Class<Throwable>) Class.forName(exceptionType);
              final String value = normalizePath(externalContext, location);
              ERROR_PAGE_LOCATIONS.put(key, value);
            } else if ("500".equals(errorCode)) {
              location500 = location;
            } else if (errorCode == null && exceptionType == null) {
              locationDefault = location;
            }
          }
        }
      }

      if (!ERROR_PAGE_LOCATIONS.containsKey(null)) {
        final String value = normalizePath(externalContext, location500 != null ? location500 : locationDefault);
        ERROR_PAGE_LOCATIONS.put(null, value);
      }
    } catch (IOException | ParserConfigurationException | ClassNotFoundException | SAXException e) {
      throw new UnsupportedOperationException(e);
    }
  }