001    /**
002     * ===================================================
003     * JCommon-Serializer : a free serialization framework
004     * ===================================================
005     *
006     * Project Info:  http://reporting.pentaho.org/jcommon-serializer/
007     *
008     * (C) Copyright 2006-2008, by Object Refinery Limited, Pentaho Corporation and Contributors.
009     *
010     * This library is free software; you can redistribute it and/or modify it under the terms
011     * of the GNU Lesser General Public License as published by the Free Software Foundation;
012     * either version 2.1 of the License, or (at your option) any later version.
013     *
014     * This library is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY;
015     * without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
016     * See the GNU Lesser General Public License for more details.
017     *
018     * You should have received a copy of the GNU Lesser General Public License along with this
019     * library; if not, write to the Free Software Foundation, Inc., 59 Temple Place, Suite 330,
020     * Boston, MA 02111-1307, USA.
021     *
022     * [Java is a trademark or registered trademark of Sun Microsystems, Inc.
023     * in the United States and other countries.]
024     *
025     * ------------
026     * JCommonSerializerBoot
027     * ------------
028     */
029    package org.jfree.serializer;
030    
031    import org.pentaho.reporting.libraries.base.boot.AbstractBoot;
032    import org.pentaho.reporting.libraries.base.config.Configuration;
033    import org.pentaho.reporting.libraries.base.versioning.ProjectInformation;
034    
035    /**
036     * The boot class guarantees a controlled initialization of the library.
037     *
038     * @author Thomas Morgner
039     */
040    public class JCommonSerializerBoot extends AbstractBoot
041    {
042      private static JCommonSerializerBoot instance;
043    
044      /**
045       * Returns a singleton instance of the boot class.
046       *
047       * @return the singleton booter.
048       */
049      public static synchronized JCommonSerializerBoot getInstance()
050      {
051        if (instance == null)
052        {
053          instance = new JCommonSerializerBoot();
054        }
055        return instance;
056      }
057    
058      /**
059       * Private constructor to prevent object creation.
060       */
061      private JCommonSerializerBoot()
062      {
063      }
064    
065      /**
066       * Loads the configuration. This will be called exactly once.
067       *
068       * @return The configuration.
069       */
070      protected Configuration loadConfiguration()
071      {
072        return createDefaultHierarchicalConfiguration
073                ("/org/jfree/serializer/jcommon-serializer.properties",
074                 "/jcommon-serializer.properties", true, JCommonSerializerBoot.class);
075      }
076    
077      /**
078       * Performs the boot. This method is empty, as this library does not require any manual initializations. 
079       */
080      protected void performBoot()
081      {
082    
083      }
084    
085      /**
086       * Returns the project info.
087       *
088       * @return The project info.
089       */
090      protected ProjectInformation getProjectInfo()
091      {
092        return JCommonSerializerInfo.getInstance();
093      }
094    }