001 /* ========================================================================
002 * JCommon : a free general purpose class library for the Java(tm) platform
003 * ========================================================================
004 *
005 * (C) Copyright 2000-2005, by Object Refinery Limited and Contributors.
006 *
007 * Project Info: http://www.jfree.org/jcommon/index.html
008 *
009 * This library is free software; you can redistribute it and/or modify it
010 * under the terms of the GNU Lesser General Public License as published by
011 * the Free Software Foundation; either version 2.1 of the License, or
012 * (at your option) any later version.
013 *
014 * This library is distributed in the hope that it will be useful, but
015 * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
016 * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public
017 * License for more details.
018 *
019 * You should have received a copy of the GNU Lesser General Public
020 * License along with this library; if not, write to the Free Software
021 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
022 * USA.
023 *
024 * [Java is a trademark or registered trademark of Sun Microsystems, Inc.
025 * in the United States and other countries.]
026 *
027 * -------------
028 * BaseBoot.java
029 * -------------
030 * (C)opyright 2004, by Thomas Morgner and Contributors.
031 *
032 * Original Author: Thomas Morgner;
033 * Contributor(s): David Gilbert (for Object Refinery Limited);
034 *
035 * $Id: BaseBoot.java,v 1.11 2007/11/02 17:50:34 taqua Exp $
036 *
037 * Changes
038 * -------
039 * 07-Jun-2004 : Added source headers (DG);
040 *
041 */
042
043 package org.jfree.base;
044
045 import org.jfree.JCommon;
046 import org.jfree.base.config.ModifiableConfiguration;
047 import org.jfree.base.log.DefaultLogModule;
048 import org.jfree.util.Configuration;
049 import org.jfree.util.ObjectUtilities;
050
051 /**
052 * The base boot class. This initializes the services provided by
053 * JCommon.
054 *
055 * @author Thomas Morgner
056 */
057 public class BaseBoot extends AbstractBoot {
058
059 /**
060 * Singleton instance.
061 */
062 private static BaseBoot singleton;
063
064 /**
065 * The project info.
066 */
067 private BootableProjectInfo bootableProjectInfo;
068
069 /**
070 * Default constructor (private).
071 */
072 private BaseBoot() {
073 this.bootableProjectInfo = JCommon.INFO;
074 }
075
076 /**
077 * Returns the global configuration as modifiable configuration reference.
078 *
079 * @return the global configuration
080 */
081 public static ModifiableConfiguration getConfiguration() {
082 return (ModifiableConfiguration) getInstance().getGlobalConfig();
083 }
084
085 /**
086 * Returns the global configuration for JFreeReport.
087 * <p/>
088 * In the current implementation, the configuration has no properties defined, but
089 * references a parent configuration that: <ul> <li>copies across all the
090 * <code>System</code> properties to use as report configuration properties (obviously
091 * the majority of them will not apply to reports);</li> <li>itself references a parent
092 * configuration that reads its properties from a file <code>jfreereport.properties</code>.
093 * </ul>
094 *
095 * @return the global configuration.
096 */
097 protected synchronized Configuration loadConfiguration() {
098 return createDefaultHierarchicalConfiguration
099 ("/org/jfree/base/jcommon.properties",
100 "/jcommon.properties", true, BaseBoot.class);
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 }