001    /**
002     *  Licensed to the Apache Software Foundation (ASF) under one or more
003     *  contributor license agreements.  See the NOTICE file distributed with
004     *  this work for additional information regarding copyright ownership.
005     *  The ASF licenses this file to You under the Apache License, Version 2.0
006     *  (the "License"); you may not use this file except in compliance with
007     *  the License.  You may obtain a copy of the License at
008     *
009     *     http://www.apache.org/licenses/LICENSE-2.0
010     *
011     *  Unless required by applicable law or agreed to in writing, software
012     *  distributed under the License is distributed on an "AS IS" BASIS,
013     *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
014     *  See the License for the specific language governing permissions and
015     *  limitations under the License.
016     */
017    
018    package org.apache.geronimo.system.logging.log4j;
019    
020    import org.apache.log4j.Level;
021    
022    /**
023     * Extention levels for Log4j
024     *
025     * @version $Rev: 706640 $ $Date: 2008-10-21 14:44:05 +0000 (Tue, 21 Oct 2008) $
026     */
027    public final class XLevel extends Level {
028        public static final int TRACE_INT = Level.DEBUG_INT - 1;
029        private static String TRACE_NAME = "TRACE";
030    
031        /**
032         * The Log4j Level Object to use for trace level messages
033         */
034        public static final XLevel TRACE = new XLevel(TRACE_INT, TRACE_NAME, 7);
035    
036        protected XLevel(int level, String name, int syslogEquiv) {
037            super(level, name, syslogEquiv);
038        }
039    
040        /**
041         * Convert the String argument to a level. If the conversion
042         * fails then this method returns {@link #TRACE}.
043         */
044        public static Level toLevel(String name) {
045            return toLevel(name, XLevel.TRACE);
046        }
047    
048        /**
049         * Convert the String argument to a level. If the conversion
050         * fails, return the level specified by the second argument,
051         * i.e. defaultValue.
052         */
053        public static Level toLevel(String name, Level defaultValue) {
054            if (name == null) {
055                return defaultValue;
056            }
057            if (name.toUpperCase().equals(TRACE_NAME)) {
058                return XLevel.TRACE;
059            }
060            return Level.toLevel(name, defaultValue);
061        }
062    
063        /**
064         * Convert an integer passed as argument to a level. If the
065         * conversion fails, then this method returns {@link #DEBUG}.
066         */
067        public static Level toLevel(int level) throws IllegalArgumentException {
068            if (level == TRACE_INT) {
069                return XLevel.TRACE;
070            } else {
071                return Level.toLevel(level);
072            }
073        }
074    }