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- /* ========================================================================
- * JCommon : a free general purpose class library for the Java(tm) platform
- * ========================================================================
- *
- * (C) Copyright 2000-2005, by Object Refinery Limited and Contributors.
- *
- * Project Info: http://www.jfree.org/jcommon/index.html
- *
- * This library is free software; you can redistribute it and/or modify it
- * under the terms of the GNU Lesser General Public License as published by
- * the Free Software Foundation; either version 2.1 of the License, or
- * (at your option) any later version.
- *
- * This library is distributed in the hope that it will be useful, but
- * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
- * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public
- * License for more details.
- *
- * You should have received a copy of the GNU Lesser General Public
- * License along with this library; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
- * USA.
- *
- * [Java is a trademark or registered trademark of Sun Microsystems, Inc.
- * in the United States and other countries.]
- *
- * ---------------
- * DefaultLog.java
- * ---------------
- * (C) Copyright 2004, by Object Refinery Limited.
- *
- * Original Author: Thomas Morgner;
- * Contributor(s): David Gilbert (for Object Refinery Limited);
- *
- * $Id: DefaultLog.java,v 1.9 2006/02/19 21:10:48 taqua Exp $
- *
- * Changes
- * -------
- * 07-Jun-2004 : Added JCommon header (DG);
- *
- */
- package org.jfree.base.log;
- import org.jfree.util.Log;
- import org.jfree.util.LogTarget;
- import org.jfree.util.PrintStreamLogTarget;
- /**
- * A default log implementation. The Log class defines how to create Logger-contexts
- * and how to forward messages to the logtargets.
- *
- * @author Thomas Morgner
- */
- public class DefaultLog extends Log {
- /** The default log target. */
- private static final PrintStreamLogTarget DEFAULT_LOG_TARGET =
- new PrintStreamLogTarget();
- /** The default log instance. */
- private static final DefaultLog defaultLogInstance;
- /**
- * Creates a new log.
- */
- protected DefaultLog () {
- // nothing required
- }
- static {
- defaultLogInstance = new DefaultLog();
- defaultLogInstance.addTarget(DEFAULT_LOG_TARGET);
- try {
- // check the system property. This is the developers backdoor to activate
- // debug output as soon as possible.
- final String property = System.getProperty("org.jfree.DebugDefault", "false");
- if (Boolean.valueOf(property).booleanValue()) {
- defaultLogInstance.setDebuglevel(LogTarget.DEBUG);
- }
- else {
- defaultLogInstance.setDebuglevel(LogTarget.WARN);
- }
- }
- catch (SecurityException se) {
- defaultLogInstance.setDebuglevel(LogTarget.WARN);
- }
- }
- /**
- * Initializes the log system after the log module was loaded and a log target
- * was defined. This is the second step of the log initialisation.
- */
- public void init() {
- removeTarget(DEFAULT_LOG_TARGET);
- final String logLevel = LogConfiguration.getLogLevel();
- if (logLevel.equalsIgnoreCase("error")) {
- setDebuglevel(LogTarget.ERROR);
- }
- else if (logLevel.equalsIgnoreCase("warn")) {
- setDebuglevel(LogTarget.WARN);
- }
- else if (logLevel.equalsIgnoreCase("info")) {
- setDebuglevel(LogTarget.INFO);
- }
- else if (logLevel.equalsIgnoreCase("debug")) {
- setDebuglevel(LogTarget.DEBUG);
- }
- }
- /**
- * Adds a log target to this facility. Log targets get informed, via the
- * LogTarget interface, whenever a message is logged with this class.
- *
- * @param target the target.
- */
- public synchronized void addTarget(final LogTarget target)
- {
- super.addTarget(target);
- // as soon as there is a real log target added, we do no longer need
- // the default logging. This was only installed to be able to send messages
- // if the deepest basic logging failed.
- if (target != DEFAULT_LOG_TARGET) {
- removeTarget(DEFAULT_LOG_TARGET);
- }
- }
- /**
- * Returns the default log.
- *
- * @return The default log.
- */
- public static DefaultLog getDefaultLog() {
- return defaultLogInstance;
- }
- /**
- * Makes this implementation the default instance.
- */
- public static void installDefaultLog () {
- Log.defineLog(defaultLogInstance);
- }
- }
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