001/*
002 * HA-JDBC: High-Availability JDBC
003 * Copyright (C) 2012  Paul Ferraro
004 *
005 * This program is free software: you can redistribute it and/or modify
006 * it under the terms of the GNU Lesser General Public License as published by
007 * the Free Software Foundation, either version 3 of the License, or
008 * (at your option) any later version.
009 *
010 * This program is distributed in the hope that it will be useful,
011 * but WITHOUT ANY WARRANTY; without even the implied warranty of
012 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
013 * GNU Lesser General Public License for more details.
014 *
015 * You should have received a copy of the GNU Lesser General Public License
016 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
017 */
018package net.sf.hajdbc.util;
019
020import java.security.PrivilegedAction;
021import java.util.Properties;
022
023public class SystemProperties
024{
025        public static String getSystemProperty(String name)
026        {
027                return getSystemProperty(name, null);
028        }
029
030        public static String getSystemProperty(final String name, final String defaultValue)
031        {
032                PrivilegedAction<String> action = new PrivilegedAction<String>()
033                {
034                        @Override
035                        public String run()
036                        {
037                                return System.getProperty(name, defaultValue);
038                        }
039                };
040                return Security.run(action);
041        }
042
043        public static Properties getSystemProperties()
044        {
045                PrivilegedAction<Properties> action = new PrivilegedAction<Properties>()
046                {
047                        @Override
048                        public Properties run()
049                        {
050                                return System.getProperties();
051                        }
052                };
053                return Security.run(action);
054        }
055        
056        public static void setSystemProperty(final String name, final String value)
057        {
058                PrivilegedAction<Void> action = new PrivilegedAction<Void>()
059                {
060                        @Override
061                        public Void run()
062                        {
063                                System.setProperty(name, value);
064                                return null;
065                        }
066                };
067                Security.run(action);
068        }
069        
070        private SystemProperties()
071        {
072                // Hide
073        }
074}