1.1 --- /dev/null	Thu Jan 01 00:00:00 1970 +0000
     1.2 +++ b/org/sonews/storage/StorageManager.java	Wed Jul 22 14:04:05 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 +}