private void updateTreeNodes(StatsProviderRegistryElement spre, boolean enable) {
   // Enable/Disable the child TreeNodes
   String parentNodePath = spre.getParentTreeNodePath();
   List<String> childNodeNames = spre.getChildTreeNodeNames();
   TreeNode rootNode = mrdr.get(instanceName);
   if (rootNode != null) {
     // This has to return one node
     List<TreeNode> nodeList = rootNode.getNodes(parentNodePath, false, true);
     TreeNode parentNode = nodeList.get(0);
     // For each child Node, enable it
     Collection<TreeNode> childNodes = parentNode.getChildNodes();
     boolean hasUpdatedNode = false;
     for (TreeNode childNode : childNodes) {
       if (childNodeNames.contains(childNode.getName())) {
         // Enabling or Disabling the child node (based on enable flag)
         if (childNode.isEnabled() != enable) {
           childNode.setEnabled(enable);
           hasUpdatedNode = true;
         }
       }
     }
     if (!hasUpdatedNode) return;
     // Make sure the tree path is affected with the changes.
     if (enable) {
       enableTreeNode(parentNode);
     } else {
       disableTreeNode(parentNode);
     }
   }
 }
  public void unregister(Object statsProvider) {
    // Unregisters the statsProvider
    try {
      StatsProviderRegistryElement spre =
          statsProviderRegistry.getStatsProviderRegistryElement(statsProvider);
      if (spre == null) {
        logger.log(
            Level.INFO, invalidStatsProvider, new Object[] {statsProvider.getClass().getName()});
        return;
      }

      // get the Parent node and delete all children nodes (only that we know of)
      String parentNodePath = spre.getParentTreeNodePath();
      List<String> childNodeNames = spre.getChildTreeNodeNames();
      TreeNode rootNode = mrdr.get(instanceName);
      if ((rootNode != null) && (parentNodePath != null)) {
        // This has to return one node
        List<TreeNode> nodeList = rootNode.getNodes(parentNodePath, false, true);
        if (nodeList.size() > 0) {
          TreeNode parentNode = nodeList.get(0);
          // Remove each of the child nodes
          Collection<TreeNode> childNodes = parentNode.getChildNodes();
          for (TreeNode childNode : childNodes) {
            if (childNodeNames.contains(childNode.getName())) {
              parentNode.removeChild(childNode);
            }
          }
          if (!parentNode.hasChildNodes()) removeParentNode(parentNode);
        }
      }

      // get the handles and unregister the listeners from Flashlight
      Collection<ProbeClientMethodHandle> handles = spre.getHandles();
      if (handles != null) {
        for (ProbeClientMethodHandle handle : handles) {
          // handle.remove????? Mahesh?
          // TODO IMPLEMENTATION
          // For now disable the handle => remove the client from invokerlist
          handle.disable();
        }
      }

      // unregister the statsProvider from Gmbal
      if (spre.getManagedObjectManager() != null) unregisterGmbal(spre);

      // Unregister from the MonitoringDataTreeRegistry and the map entries
      statsProviderRegistry.unregisterStatsProvider(statsProvider);
    } catch (Exception ex) {
      String msg =
          MessageFormat.format(errorUnregisteringStatsProvider, statsProvider.getClass().getName());
      logger.log(Level.SEVERE, msg, ex);
    }
  }
 private void resetChildNodeStatistics(
     String parentNodePath, List<String> childNodeNames, String statsProviderName) {
   TreeNode rootNode = mrdr.get(instanceName);
   if (rootNode != null) {
     List<TreeNode> nodeList = rootNode.getNodes(parentNodePath, false, true);
     if (nodeList.size() > 0) {
       TreeNode parentNode = nodeList.get(0);
       Collection<TreeNode> childNodes = parentNode.getChildNodes();
       for (TreeNode childNode : childNodes) {
         if (childNodeNames.contains(childNode.getName())) {
           invokeStatisticResetMethod(childNode.getValue());
         }
       }
     } else {
       logger.log(Level.WARNING, nodeNotFound, new Object[] {parentNodePath, statsProviderName});
     }
   }
 }