/*

 * Copyright 2003-2008 Sun Microsystems, Inc.  All Rights Reserved.

 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.

 *

 * This code is free software; you can redistribute it and/or modify it

 * under the terms of the GNU General Public License version 2 only, as

 * published by the Free Software Foundation.  Sun designates this

 * particular file as subject to the "Classpath" exception as provided

 * by Sun in the LICENSE file that accompanied this code.

 *

 * This code 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 General Public License

 * version 2 for more details (a copy is included in the LICENSE file that

 * accompanied this code).

 *

 * You should have received a copy of the GNU General Public License version

 * 2 along with this work; if not, write to the Free Software Foundation,

 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.

 *

 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,

 * CA 95054 USA or visit www.sun.com if you need additional information or

 * have any questions.

 */

package java.util.logging;

/**

 * The management interface for the logging facility.

 *

 * <p>There is a single global instance of the <tt>LoggingMXBean</tt>.

 * This instance is an

 * <a href="../../lang/management/ManagementFactory.html#MXBean">MXBean</a>

 * can be obtained by calling

 * the {@link LogManager#getLoggingMXBean} method or from the

 *

 * identifying the <tt>LoggingMXBean</tt> within an MBeanServer is:

 * <blockquote>

 *    {@link LogManager#LOGGING_MXBEAN_NAME

 *           <tt>java.util.logging:type=Logging</tt>}

 * </blockquote>

 *

 *

 * @author  Ron Mann

 * @author  Mandy Chung

 * @since   1.5

 *

 */

    /**

     * Returns the list of currently registered loggers. This method

     * calls {@link LogManager#getLoggerNames} and returns a list

     * of the logger names.

     *

     * @return A list of <tt>String</tt> each of which is a

     *         currently registered <tt>Logger</tt> name.

     */

    public java.util.List<String> getLoggerNames();

    /**

     * Gets the name of the log level associated with the specified logger.

     * If the specified logger does not exist, <tt>null</tt>

     * is returned.

     * This method first finds the logger of the given name and

     * then returns the name of the log level by calling:

     * <blockquote>

     *   {@link Logger#getLevel Logger.getLevel()}.{@link Level#getName getName()};

     * </blockquote>

     *

     * <p>

     * If the <tt>Level</tt> of the specified logger is <tt>null</tt>,

     * which means that this logger's effective level is inherited

     * from its parent, an empty string will be returned.

     *

     * @param loggerName The name of the <tt>Logger</tt> to be retrieved.

     *

     * @return The name of the log level of the specified logger; or

     *         an empty string if the log level of the specified logger

     *         is <tt>null</tt>.  If the specified logger does not

     *         exist, <tt>null</tt> is returned.

     *

     * @see Logger#getLevel

     */

    public String getLoggerLevel( String loggerName );

    /**

     * Sets the specified logger to the specified new level.

     * If the <tt>levelName</tt> is not <tt>null</tt>, the level

     * of the specified logger is set to the parsed <tt>Level</tt>

     * matching the <tt>levelName</tt>.

     * If the <tt>levelName</tt> is <tt>null</tt>, the level

     * of the specified logger is set to <tt>null</tt> and

     * the effective level of the logger is inherited from

     * its nearest ancestor with a specific (non-null) level value.

     *

     * @param loggerName The name of the <tt>Logger</tt> to be set.

     *                   Must be non-null.

     * @param levelName The name of the level to set on the specified logger,

     *                 or <tt>null</tt> if setting the level to inherit

     *                 from its nearest ancestor.

     *

     * @throws IllegalArgumentException if the specified logger

     * does not exist, or <tt>levelName</tt> is not a valid level name.

     *

     * @throws SecurityException if a security manager exists and if

     * the caller does not have LoggingPermission("control").

     *

     * @see Logger#setLevel

     */

    public void setLoggerLevel( String loggerName, String levelName );

    /**

     * Returns the name of the parent for the specified logger.

     * If the specified logger does not exist, <tt>null</tt> is returned.

     * If the specified logger is the root <tt>Logger</tt> in the namespace,

     * the result will be an empty string.

     *

     * @param loggerName The name of a <tt>Logger</tt>.

     *

     * @return the name of the nearest existing parent logger;

     *         an empty string if the specified logger is the root logger.

     *         If the specified logger does not exist, <tt>null</tt>

     *         is returned.

     */

    public String getParentLoggerName(String loggerName);

}