1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/org/sonews/storage/StorageManager.java Mon Aug 24 14:40:37 2009 +0200
1.3 @@ -0,0 +1,89 @@
1.4 +/*
1.5 + * SONEWS News Server
1.6 + * see AUTHORS for the list of contributors
1.7 + *
1.8 + * This program is free software: you can redistribute it and/or modify
1.9 + * it under the terms of the GNU General Public License as published by
1.10 + * the Free Software Foundation, either version 3 of the License, or
1.11 + * (at your option) any later version.
1.12 + *
1.13 + * This program is distributed in the hope that it will be useful,
1.14 + * but WITHOUT ANY WARRANTY; without even the implied warranty of
1.15 + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
1.16 + * GNU General Public License for more details.
1.17 + *
1.18 + * You should have received a copy of the GNU General Public License
1.19 + * along with this program. If not, see <http://www.gnu.org/licenses/>.
1.20 + */
1.21 +
1.22 +package org.sonews.storage;
1.23 +
1.24 +/**
1.25 + *
1.26 + * @author Christian Lins
1.27 + * @since sonews/1.0
1.28 + */
1.29 +public final class StorageManager
1.30 +{
1.31 +
1.32 + private static StorageProvider provider;
1.33 +
1.34 + public static Storage current()
1.35 + throws StorageBackendException
1.36 + {
1.37 + synchronized(StorageManager.class)
1.38 + {
1.39 + if(provider == null)
1.40 + {
1.41 + return null;
1.42 + }
1.43 + else
1.44 + {
1.45 + return provider.storage(Thread.currentThread());
1.46 + }
1.47 + }
1.48 + }
1.49 +
1.50 + public static StorageProvider loadProvider(String pluginClassName)
1.51 + {
1.52 + try
1.53 + {
1.54 + Class<?> clazz = Class.forName(pluginClassName);
1.55 + Object inst = clazz.newInstance();
1.56 + return (StorageProvider)inst;
1.57 + }
1.58 + catch(Exception ex)
1.59 + {
1.60 + System.err.println(ex);
1.61 + return null;
1.62 + }
1.63 + }
1.64 +
1.65 + /**
1.66 + * Sets the current storage provider.
1.67 + * @param provider
1.68 + */
1.69 + public static void enableProvider(StorageProvider provider)
1.70 + {
1.71 + synchronized(StorageManager.class)
1.72 + {
1.73 + if(StorageManager.provider != null)
1.74 + {
1.75 + disableProvider();
1.76 + }
1.77 + StorageManager.provider = provider;
1.78 + }
1.79 + }
1.80 +
1.81 + /**
1.82 + * Disables the current provider.
1.83 + */
1.84 + public static void disableProvider()
1.85 + {
1.86 + synchronized(StorageManager.class)
1.87 + {
1.88 + provider = null;
1.89 + }
1.90 + }
1.91 +
1.92 +}