00001 /* 00002 * Copyright (C) 2008 Patrick Ohly 00003 * 00004 * This program is free software; you can redistribute it and/or modify 00005 * it under the terms of the GNU General Public License version 2 as 00006 * the Free Software Foundation; either version 2 of the License, or 00007 * (at your option) any later version. 00008 * 00009 * This program is distributed in the hope that it will be useful, 00010 * but WITHOUT ANY WARRANTY; without even the implied warranty of 00011 * MERCHANTABILITY, TITLE, NONINFRINGEMENT or FITNESS FOR A PARTICULAR 00012 * PURPOSE. See the GNU General Public License for more details. 00013 * 00014 * You should have received a copy of the GNU General Public License 00015 * along with this program; if not, write to the Free Software 00016 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 00017 * 02111-1307 USA 00018 */ 00019 00020 #ifndef INCL_EVOLUTION_VOLATILE_CONFIG_TREE 00021 # define INCL_EVOLUTION_VOLATILE_CONFIG_TREE 00022 00023 # include "FileConfigTree.h" 00024 00025 /** 00026 * This class can store properties while in memory, but will never 00027 * save them persistently. Implemented by instantiating a FileConfigTree 00028 * with invalid path and intercepting its flush() method. 00029 */ 00030 class VolatileConfigTree : public FileConfigTree { 00031 public: 00032 VolatileConfigTree() : 00033 FileConfigTree("/dev/null", false) 00034 {} 00035 00036 virtual void flush() {} 00037 }; 00038 00039 #endif