    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
    043package org.jfree.base;
    044
    045import org.jfree.JCommon;
    046import org.jfree.base.config.ModifiableConfiguration;
    047import org.jfree.base.log.DefaultLogModule;
    048import org.jfree.util.Configuration;
    049import 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 */
    057public 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}