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Java Source Code / Java Documentation » 6.0 JDK Core » Collections Jar Zip Logging regex » java.util.logging 
Source Cross Referenced  Class Diagram Java Document (Java Doc) 


001        /*
002         * Copyright 2003-2005 Sun Microsystems, Inc.  All Rights Reserved.
003         * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
004         *
005         * This code is free software; you can redistribute it and/or modify it
006         * under the terms of the GNU General Public License version 2 only, as
007         * published by the Free Software Foundation.  Sun designates this
008         * particular file as subject to the "Classpath" exception as provided
009         * by Sun in the LICENSE file that accompanied this code.
010         *
011         * This code is distributed in the hope that it will be useful, but WITHOUT
012         * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
013         * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
014         * version 2 for more details (a copy is included in the LICENSE file that
015         * accompanied this code).
016         *
017         * You should have received a copy of the GNU General Public License version
018         * 2 along with this work; if not, write to the Free Software Foundation,
019         * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
020         *
021         * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
022         * CA 95054 USA or visit www.sun.com if you need additional information or
023         * have any questions.
024         */
025
026        package java.util.logging;
027
028        import java.util.Enumeration;
029        import java.util.List;
030        import java.util.ArrayList;
031
032        /** 
033         * Logging is the implementation class of LoggingMXBean.
034         *
035         * The <tt>LoggingMXBean</tt> interface provides a standard
036         * method for management access to the individual
037         * java.util.Logger objects available at runtime.
038         * 
039         * @author Ron Mann
040         * @author Mandy Chung
041         * @version 1.15, 05/05/07
042         * @since 1.5
043         *
044         * @see javax.management
045         * @see java.util.Logger
046         * @see java.util.LogManager
047         */
048        class Logging implements  LoggingMXBean {
049
050            private static LogManager logManager = LogManager.getLogManager();
051
052            /** Constructor of Logging which is the implementation class
053             *  of LoggingMXBean.
054             */
055            Logging() {
056            }
057
058            public List<String> getLoggerNames() {
059                Enumeration loggers = logManager.getLoggerNames();
060                ArrayList<String> array = new ArrayList<String>();
061
062                for (; loggers.hasMoreElements();) {
063                    array.add((String) loggers.nextElement());
064                }
065                return array;
066            }
067
068            private static String EMPTY_STRING = "";
069
070            public String getLoggerLevel(String loggerName) {
071                Logger l = logManager.getLogger(loggerName);
072                if (l == null) {
073                    return null;
074                }
075
076                Level level = l.getLevel();
077                if (level == null) {
078                    return EMPTY_STRING;
079                } else {
080                    return level.getName();
081                }
082            }
083
084            public void setLoggerLevel(String loggerName, String levelName) {
085                if (loggerName == null) {
086                    throw new NullPointerException("loggerName is null");
087                }
088
089                Logger logger = logManager.getLogger(loggerName);
090
091                if (logger == null) {
092                    throw new IllegalArgumentException("Logger " + loggerName
093                            + "does not exist");
094                }
095
096                Level level = null;
097                if (levelName != null) {
098                    // parse will throw IAE if logLevel is invalid 
099                    level = Level.parse(levelName);
100                }
101
102                logger.setLevel(level);
103            }
104
105            public String getParentLoggerName(String loggerName) {
106                Logger l = logManager.getLogger(loggerName);
107                if (l == null) {
108                    return null;
109                }
110
111                Logger p = l.getParent();
112                if (p == null) {
113                    // root logger
114                    return EMPTY_STRING;
115                } else {
116                    return p.getName();
117                }
118            }
119
120        }
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