/**
   * If CS throws an exception it handled and transalated to a Openfire exception if possible. This
   * is done using <code>exceptionMap</code> that has a mapping from CS to OF. If no mapping is
   * found then it tries to instantiete the original exception. If this fails it throws a <code>
   * Exception</code> with the message of the CS exception.
   *
   * @param response the response from CS to check if it is an exception message.
   * @throws Exception if the response is an exception message.
   */
  private void checkFault(Element response) throws Exception {
    Node node = response.selectSingleNode("ns1:faultstring");
    if (node != null) {
      String exceptionText = node.getText();

      // Text accepted samples:
      // 'java.lang.Exception: Exception message'
      // 'java.lang.Exception'

      // Get the exception class and message if any
      int index = exceptionText.indexOf(":");
      String className;
      String message;
      // If there is no message, save the class only
      if (index == -1) {
        className = exceptionText;
        message = null;
      } else {
        // Else save both
        className = exceptionText.substring(0, index);
        message = exceptionText.substring(index + 2);
      }

      // Map the exception to a Openfire one, if possible
      if (exceptionMap.containsKey(className)) {
        className = exceptionMap.get(className);
      }

      // Tries to create an instance with the message
      Exception exception;
      try {
        Class exceptionClass = Class.forName(className);
        if (message == null) {
          exception = (Exception) exceptionClass.newInstance();
        } else {
          Constructor constructor = exceptionClass.getConstructor(String.class);
          exception = (Exception) constructor.newInstance(message);
        }
      } catch (Exception e) {
        // failed to create an specific exception, creating a standard one.
        exception = new Exception(exceptionText);
      }

      throw exception;
    }
  }
Beispiel #2
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 private GroupManager() {
   // Initialize caches.
   CacheManager.initializeCache("group", 128 * 1024);
   CacheManager.initializeCache("group member", 32 * 1024);
   groupCache = CacheManager.getCache("group");
   // Load a group provider.
   String className =
       JiveGlobals.getXMLProperty(
           "provider.group.className", "org.jivesoftware.wildfire.group.DefaultGroupProvider");
   try {
     Class c = ClassUtils.forName(className);
     provider = (GroupProvider) c.newInstance();
   } catch (Exception e) {
     Log.error("Error loading group provider: " + className, e);
     provider = new DefaultGroupProvider();
   }
 }