/// -----------------------------------------------------------------------------
        /// <summary>
        /// SaveModuleDefinition saves the Module Definition to the database
        /// </summary>
        /// <param name="moduleDefinition">The Module Definition to save</param>
        /// <param name="saveChildren">A flag that determines whether the child objects are also saved</param>
        /// <param name="clearCache">A flag that determines whether to clear the host cache</param>
        /// <history>
        /// 	[cnurse]	01/14/2008   Created
        /// </history>
        /// -----------------------------------------------------------------------------
        public static int SaveModuleDefinition(ModuleDefinitionInfo moduleDefinition, bool saveChildren, bool clearCache)
        {
            int moduleDefinitionID = moduleDefinition.ModuleDefID;
            if (moduleDefinitionID == Null.NullInteger)
            {
				//Add new Module Definition
                moduleDefinitionID = dataProvider.AddModuleDefinition(moduleDefinition.DesktopModuleID,
                                                                      moduleDefinition.FriendlyName,
                                                                      moduleDefinition.DefinitionName,
                                                                      moduleDefinition.DefaultCacheTime,
                                                                      UserController.Instance.GetCurrentUserInfo().UserID);
            }
            else
            {
				//Upgrade Module Definition
                dataProvider.UpdateModuleDefinition(moduleDefinition.ModuleDefID, moduleDefinition.FriendlyName, moduleDefinition.DefinitionName, moduleDefinition.DefaultCacheTime, UserController.Instance.GetCurrentUserInfo().UserID);
            }
            if (saveChildren)
            {
                foreach (KeyValuePair<string, PermissionInfo> kvp in moduleDefinition.Permissions)
                {
                    kvp.Value.ModuleDefID = moduleDefinitionID;

                    //check if permission exists
                    var permissionController = new PermissionController();
                    ArrayList permissions = permissionController.GetPermissionByCodeAndKey(kvp.Value.PermissionCode, kvp.Value.PermissionKey);
                    if (permissions != null && permissions.Count == 1)
                    {
                        var permission = (PermissionInfo) permissions[0];
                        kvp.Value.PermissionID = permission.PermissionID;
                        permissionController.UpdatePermission(kvp.Value);
                    }
                    else
                    {
                        permissionController.AddPermission(kvp.Value);
                    }
                }
                foreach (KeyValuePair<string, ModuleControlInfo> kvp in moduleDefinition.ModuleControls)
                {
                    kvp.Value.ModuleDefID = moduleDefinitionID;

                    //check if definition exists
                    ModuleControlInfo moduleControl = ModuleControlController.GetModuleControlByControlKey(kvp.Value.ControlKey, kvp.Value.ModuleDefID);
                    if (moduleControl != null)
                    {
                        kvp.Value.ModuleControlID = moduleControl.ModuleControlID;
                    }
                    ModuleControlController.SaveModuleControl(kvp.Value, clearCache);
                }
            }
            if (clearCache)
            {
                DataCache.ClearHostCache(true);
            }
            return moduleDefinitionID;
        }