Source for org.jfree.base.BaseBoot

   1: /* ========================================================================
   2:  * JCommon : a free general purpose class library for the Java(tm) platform
   3:  * ========================================================================
   4:  *
   5:  * (C) Copyright 2000-2005, by Object Refinery Limited and Contributors.
   6:  * 
   7:  * Project Info:  http://www.jfree.org/jcommon/index.html
   8:  *
   9:  * This library is free software; you can redistribute it and/or modify it 
  10:  * under the terms of the GNU Lesser General Public License as published by 
  11:  * the Free Software Foundation; either version 2.1 of the License, or 
  12:  * (at your option) any later version.
  13:  *
  14:  * This library is distributed in the hope that it will be useful, but 
  15:  * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY 
  16:  * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public 
  17:  * License for more details.
  18:  *
  19:  * You should have received a copy of the GNU Lesser General Public
  20:  * License along with this library; if not, write to the Free Software
  21:  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, 
  22:  * USA.  
  23:  *
  24:  * [Java is a trademark or registered trademark of Sun Microsystems, Inc. 
  25:  * in the United States and other countries.]
  26:  * 
  27:  * -------------
  28:  * BaseBoot.java
  29:  * -------------
  30:  * (C)opyright 2004, by Thomas Morgner and Contributors.
  31:  *
  32:  * Original Author:  Thomas Morgner;
  33:  * Contributor(s):   David Gilbert (for Object Refinery Limited);
  34:  *
  35:  * $Id: BaseBoot.java,v 1.9 2006/02/19 21:10:47 taqua Exp $
  36:  *
  37:  * Changes
  38:  * -------
  39:  * 07-Jun-2004 : Added source headers (DG);
  40:  *
  41:  */
  42: 
  43: package org.jfree.base;
  44: 
  45: import org.jfree.JCommon;
  46: import org.jfree.base.config.ModifiableConfiguration;
  47: import org.jfree.base.log.DefaultLogModule;
  48: import org.jfree.util.Configuration;
  49: import org.jfree.util.ObjectUtilities;
  50: 
  51: /**
  52:  * The base boot class. This initializes the services provided by
  53:  * JCommon.
  54:  *
  55:  * @author Thomas Morgner
  56:  */
  57: public class BaseBoot extends AbstractBoot {
  58: 
  59:     /**
  60:      * Singleton instance.
  61:      */
  62:     private static BaseBoot singleton;
  63: 
  64:     /**
  65:      * The project info.
  66:      */
  67:     private BootableProjectInfo bootableProjectInfo;
  68: 
  69:     /**
  70:      * Default constructor (private).
  71:      */
  72:     private BaseBoot() {
  73:         this.bootableProjectInfo = JCommon.INFO;
  74:     }
  75: 
  76:     /**
  77:      * Returns the global configuration as modifiable configuration reference.
  78:      *
  79:      * @return the global configuration
  80:      */
  81:     public static ModifiableConfiguration getConfiguration() {
  82:         return (ModifiableConfiguration) getInstance().getGlobalConfig();
  83:     }
  84: 
  85:     /**
  86:      * Returns the global configuration for JFreeReport.
  87:      * <p/>
  88:      * In the current implementation, the configuration has no properties defined, but
  89:      * references a parent configuration that: <ul> <li>copies across all the
  90:      * <code>System</code> properties to use as report configuration properties (obviously
  91:      * the majority of them will not apply to reports);</li> <li>itself references a parent
  92:      * configuration that reads its properties from a file <code>jfreereport.properties</code>.
  93:      * </ul>
  94:      *
  95:      * @return the global configuration.
  96:      */
  97:     protected synchronized Configuration loadConfiguration() {
  98:         return createDefaultHierarchicalConfiguration
  99:             ("/org/jfree/base/jcommon.properties",
 100:              "/jcommon.properties", true);
 101:     }
 102: 
 103:     /**
 104:      * Returns the boot instance.
 105:      * 
 106:      * @return The boot instance.
 107:      */
 108:     public static synchronized AbstractBoot getInstance() {
 109:         if (singleton == null) {
 110:             singleton = new BaseBoot();
 111:         }
 112:         return singleton;
 113:     }
 114: 
 115:     /**
 116:      * Performs the boot process.
 117:      */
 118:     protected void performBoot() {
 119:         // configure the classloader from the properties-file.
 120:         ObjectUtilities.setClassLoaderSource
 121:                 (getConfiguration().getConfigProperty("org.jfree.ClassLoader"));
 122: 
 123:         getPackageManager().addModule(DefaultLogModule.class.getName());
 124:         getPackageManager().load("org.jfree.jcommon.modules.");
 125:         getPackageManager().initializeModules();
 126:     }
 127: 
 128:     /**
 129:      * Returns the project info.
 130:      * 
 131:      * @return The project info.
 132:      */
 133:     protected BootableProjectInfo getProjectInfo() {
 134:         return this.bootableProjectInfo;
 135:     }
 136: }