/** Apply a single modification to the current change-set. */
  @SuppressWarnings("unchecked")
  private <T> void modifyPropertyValues(
      ManagedObject<?> mo,
      PropertyDefinition<T> pd,
      Map<PropertyDefinition, Set> changes,
      ModificationType modType,
      String s)
      throws ArgumentException {
    Set<T> values = changes.get(pd);
    if (values == null) {
      values = mo.getPropertyValues(pd);
    }

    if (s == null || s.length() == 0) {
      // Reset back to defaults.
      values.clear();
    } else {
      T value;
      try {
        value = pd.decodeValue(s);
      } catch (IllegalPropertyValueStringException e) {
        throw ArgumentExceptionFactory.adaptPropertyException(e, mo.getManagedObjectDefinition());
      }

      switch (modType) {
        case ADD:
          values.add(value);
          break;
        case REMOVE:
          if (!values.remove(value)) {
            // value was not part of values
            throw ArgumentExceptionFactory.unknownValueForMultiValuedProperty(s, pd.getName());
          }
          break;
        case SET:
          values = new TreeSet<T>(pd);
          values.add(value);
          break;
      }
    }

    changes.put(pd, values);
  }
  /** {@inheritDoc} */
  @SuppressWarnings("unchecked")
  @Override
  public MenuResult<Integer> run(ConsoleApplication app, ManagementContextFactory factory)
      throws ArgumentException, ClientException, CLIException {
    // Get the naming argument values.
    List<String> names = getNamingArgValues(app, namingArgs);

    // Reset the command builder
    getCommandBuilder().clearArguments();

    setCommandBuilderUseful(false);

    // Update the command builder.
    updateCommandBuilderWithSubCommand();

    // Get the targeted managed object.
    Message ufn = path.getRelationDefinition().getUserFriendlyName();
    ManagementContext context = factory.getManagementContext(app);
    MenuResult<ManagedObject<?>> result;
    try {
      result = getManagedObject(app, context, path, names);
    } catch (AuthorizationException e) {
      Message msg = ERR_DSCFG_ERROR_MODIFY_AUTHZ.get(ufn);
      throw new ClientException(LDAPResultCode.INSUFFICIENT_ACCESS_RIGHTS, msg);
    } catch (DefinitionDecodingException e) {
      Message msg = ERR_DSCFG_ERROR_GET_CHILD_DDE.get(ufn, ufn, ufn);
      throw new ClientException(LDAPResultCode.OTHER, msg);
    } catch (ManagedObjectDecodingException e) {
      // FIXME: should not abort here. Instead, display the errors (if
      // verbose) and apply the changes to the partial managed object.
      Message msg = ERR_DSCFG_ERROR_GET_CHILD_MODE.get(ufn);
      throw new ClientException(LDAPResultCode.OTHER, msg, e);
    } catch (CommunicationException e) {
      Message msg = ERR_DSCFG_ERROR_MODIFY_CE.get(ufn, e.getMessage());
      throw new ClientException(LDAPResultCode.OTHER, msg);
    } catch (ConcurrentModificationException e) {
      Message msg = ERR_DSCFG_ERROR_MODIFY_CME.get(ufn);
      throw new ClientException(LDAPResultCode.CONSTRAINT_VIOLATION, msg);
    } catch (ManagedObjectNotFoundException e) {
      String objName = names.get(names.size() - 1);
      ArgumentException except = null;
      Message msg;
      // if object name is 'null', get a user-friendly string to represent this
      if (objName == null) {
        msg = ERR_DSCFG_ERROR_FINDER_NO_CHILDREN_NULL.get();
        except = new ArgumentException(msg);
      } else {
        except = ArgumentExceptionFactory.unknownValueForChildComponent("\"" + objName + "\"");
      }
      if (app.isInteractive()) {
        app.println();
        app.printVerboseMessage(except.getMessageObject());
        return MenuResult.cancel();
      } else {
        throw except;
      }
    }

    if (result.isQuit()) {
      if (!app.isMenuDrivenMode()) {
        // User chose to quit.
        Message msg = INFO_DSCFG_CONFIRM_MODIFY_FAIL.get(ufn);
        app.printVerboseMessage(msg);
      }
      return MenuResult.quit();
    } else if (result.isCancel()) {
      return MenuResult.cancel();
    }

    ManagedObject<?> child = result.getValue();
    ManagedObjectDefinition<?, ?> d = child.getManagedObjectDefinition();
    Map<String, ModificationType> lastModTypes = new HashMap<String, ModificationType>();
    Map<PropertyDefinition, Set> changes = new HashMap<PropertyDefinition, Set>();

    // Reset properties.
    for (String m : propertyResetArgument.getValues()) {

      // Check one does not try to reset with a value
      if (m.contains(":")) {
        throw ArgumentExceptionFactory.unableToResetPropertyWithValue(m, OPTION_DSCFG_LONG_RESET);
      }

      PropertyDefinition<?> pd = getPropertyDefinition(d, m);

      // Mandatory properties which have no defined defaults cannot be reset.
      if (pd.hasOption(PropertyOption.MANDATORY)
          && pd.getDefaultBehaviorProvider() instanceof UndefinedDefaultBehaviorProvider) {
        throw ArgumentExceptionFactory.unableToResetMandatoryProperty(d, m, OPTION_DSCFG_LONG_SET);
      }

      // Save the modification type.
      lastModTypes.put(m, ModificationType.SET);

      // Apply the modification.
      modifyPropertyValues(child, pd, changes, ModificationType.SET, null);
    }

    // Set properties.
    for (String m : propertySetArgument.getValues()) {
      Pair<String, String> pair = parseValue(m);
      String propertyName = pair.getFirst();
      String value = pair.getSecond();

      PropertyDefinition<?> pd = getPropertyDefinition(d, propertyName);

      // Apply the modification.
      if (lastModTypes.containsKey(propertyName)) {
        modifyPropertyValues(child, pd, changes, ModificationType.ADD, value);
      } else {
        lastModTypes.put(propertyName, ModificationType.SET);
        modifyPropertyValues(child, pd, changes, ModificationType.SET, value);
      }
    }

    // Remove properties.
    for (String m : propertyRemoveArgument.getValues()) {
      Pair<String, String> pair = parseValue(m);
      String propertyName = pair.getFirst();
      String value = pair.getSecond();

      PropertyDefinition<?> pd = getPropertyDefinition(d, propertyName);

      // Apply the modification.
      if (lastModTypes.containsKey(propertyName)
          && lastModTypes.get(propertyName) == ModificationType.SET) {
        throw ArgumentExceptionFactory.incompatiblePropertyModification(m);
      }

      lastModTypes.put(propertyName, ModificationType.REMOVE);
      modifyPropertyValues(child, pd, changes, ModificationType.REMOVE, value);
    }

    // Add properties.
    for (String m : propertyAddArgument.getValues()) {
      Pair<String, String> pair = parseValue(m);
      String propertyName = pair.getFirst();
      String value = pair.getSecond();

      PropertyDefinition<?> pd = getPropertyDefinition(d, propertyName);

      // Apply the modification.
      if (lastModTypes.containsKey(propertyName)
          && lastModTypes.get(propertyName) == ModificationType.SET) {
        throw ArgumentExceptionFactory.incompatiblePropertyModification(m);
      }

      lastModTypes.put(propertyName, ModificationType.ADD);
      modifyPropertyValues(child, pd, changes, ModificationType.ADD, value);
    }

    // Apply the command line changes.
    for (PropertyDefinition<?> pd : changes.keySet()) {
      try {
        child.setPropertyValues(pd, changes.get(pd));
      } catch (PropertyException e) {
        throw ArgumentExceptionFactory.adaptPropertyException(e, d);
      }
      setCommandBuilderUseful(true);
    }

    // Now the command line changes have been made, apply the changes
    // interacting with the user to fix any problems if required.
    MenuResult<Void> result2 = modifyManagedObject(app, context, child, this);
    if (result2.isCancel()) {
      return MenuResult.cancel();
    } else if (result2.isQuit()) {
      return MenuResult.quit();
    } else {
      if (propertyResetArgument.hasValue()) {
        getCommandBuilder().addArgument(propertyResetArgument);
      }
      if (propertySetArgument.hasValue()) {
        getCommandBuilder().addArgument(propertySetArgument);
      }
      if (propertyAddArgument.hasValue()) {
        getCommandBuilder().addArgument(propertyAddArgument);
      }
      if (propertyRemoveArgument.hasValue()) {
        getCommandBuilder().addArgument(propertyRemoveArgument);
      }
      return MenuResult.success(0);
    }
  }