logconfiguration.java

这是一个segy数据显示程序

/* ========================================================================
 * JCommon : a free general purpose class library for the Java(tm) platform
 * ========================================================================
 *
 * (C) Copyright 2000-2004, 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., 59 Temple Place, Suite 330,
 * Boston, MA 02111-1307, USA.
 *
 * [Java is a trademark or registered trademark of Sun Microsystems, Inc. 
 * in the United States and other countries.]
 * 
 * ---------------------
 * LogConfiguration.java
 * ---------------------
 * (C) Copyright 2004, by Object Refinery Limited.
 *
 * Original Author:  Thomas Morgner;
 * Contributor(s):   David Gilbert (for Object Refinery Limited);
 *
 * $Id: LogConfiguration.java,v 1.2 2004/06/07 14:44:57 mungady Exp $
 *
 * Changes
 * -------
 * 07-Jun-2004 : Added JCommon header (DG);
 *
 */

package org.jfree.base.log;

import org.jfree.base.BaseBoot;
import org.jfree.util.PrintStreamLogTarget;

/**
 * A log configuration class.
 */
public class LogConfiguration {
  /** The default 'disable logging' property value. */
  public static final String DISABLE_LOGGING_DEFAULT = "false";

  /** The 'log level' property key. */
  public static final String LOGLEVEL
      = "org.jfree.base.LogLevel";

  /** The default 'log level' property value. */
  public static final String LOGLEVEL_DEFAULT = "Info";

  /** The 'log target' property key. */
  public static final String LOGTARGET = "org.jfree.base.LogTarget";

  /** The default 'log target' property value. */
  public static final String LOGTARGET_DEFAULT =
          PrintStreamLogTarget.class.getName();

  /** The 'disable logging' property key. */
  public static final String DISABLE_LOGGING
      = "org.jfree.base.NoDefaultDebug";

  /**
   * Default constructor.
   */
  private LogConfiguration() {
      // nothing required.
  }

  /**
   * Returns the current log target.
   *
   * @return the log target.
   */
  public static String getLogTarget()
  {
    return BaseBoot.getInstance().getGlobalConfig().getConfigProperty
            (LOGTARGET, LOGTARGET_DEFAULT);
  }

  /**
   * Sets the log target.
   *
   * @param logTarget  the new log target.
   */
  public static void setLogTarget(final String logTarget)
  {
    BaseBoot.getInstance().getGlobalConfig().setConfigProperty
            (LOGTARGET, logTarget);
  }

  /**
   * Returns the log level.
   *
   * @return the log level.
   */
  public static String getLogLevel()
  {
    return BaseBoot.getInstance().getGlobalConfig().getConfigProperty
            (LOGLEVEL, LOGLEVEL_DEFAULT);
  }

  /**
   * Sets the log level, which is read from the global report configuration at
   * the point that the classloader loads the {@link org.jfree.util.Log} class.
   * <p>
   * Valid log levels are:
   *
   * <ul>
   * <li><code>"Error"</code> - error messages;</li>
   * <li><code>"Warn"</code> - warning messages;</li>
   * <li><code>"Info"</code> - information messages;</li>
   * <li><code>"Debug"</code> - debug messages;</li>
   * </ul>
   *
   * Notes:
   * <ul>
   * <li>the setting is not case sensitive.</li>
   * <li>changing the log level after the {@link org.jfree.util.Log} class has been
   * loaded will have no effect.</li>
   * <li>to turn of logging altogether, use the {@link #setDisableLogging} method.</li>
   * </ul>
   *
   * @param level  the new log level.
   */
  public static void setLogLevel(final String level)
  {
    BaseBoot.getInstance().getGlobalConfig().setConfigProperty(LOGLEVEL, level);
  }

  /**
   * Returns <code>true</code> if logging is disabled, and <code>false</code> otherwise.
   *
   * @return true, if logging is completly disabled, false otherwise.
   */
  public static boolean isDisableLogging()
  {
    return BaseBoot.getInstance().getGlobalConfig().getConfigProperty
        (DISABLE_LOGGING, DISABLE_LOGGING_DEFAULT).equalsIgnoreCase("true");
  }

  /**
   * Sets the flag that disables logging.
   * <p>
   * To switch off logging globally, you can use the following code:
   * <p>
   * <code>ReportConfiguration.getGlobalConfig().setDisableLogging(true);</code>
   *
   * @param disableLogging  the flag.
   */
  public static void setDisableLogging(final boolean disableLogging)
  {
    BaseBoot.getInstance().getGlobalConfig().setConfigProperty
            (DISABLE_LOGGING, String.valueOf(disableLogging));
  }


}