Source Code Cross Referenced for FormsLogger.java in  » Swing-Library » abeille-forms-designer » com » jeta » forms » logger » Java Source Code / Java DocumentationJava Source Code and Java Documentation

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Java Source Code / Java Documentation » Swing Library » abeille forms designer » com.jeta.forms.logger 
Source Cross Referenced  Class Diagram Java Document (Java Doc) 


001:        /*
002:         * Copyright (c) 2004 JETA Software, Inc.  All rights reserved.
003:         * 
004:         * Redistribution and use in source and binary forms, with or without modification, 
005:         * are permitted provided that the following conditions are met:
006:         *
007:         *  o Redistributions of source code must retain the above copyright notice, 
008:         *    this list of conditions and the following disclaimer.
009:         *
010:         *  o Redistributions in binary form must reproduce the above copyright notice, 
011:         *    this list of conditions and the following disclaimer in the documentation 
012:         *    and/or other materials provided with the distribution.
013:         *
014:         *  o Neither the name of JETA Software nor the names of its contributors may 
015:         *    be used to endorse or promote products derived from this software without 
016:         *    specific prior written permission.
017:         *
018:         * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" 
019:         * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 
020:         * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 
021:         * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR
022:         * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES 
023:         * INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
024:         * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
025:         * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 
026:         * INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS 
027:         * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
028:         */
029:
030:        package com.jeta.forms.logger;
031:
032:        import java.io.PrintWriter;
033:        import java.io.StringWriter;
034:        import java.util.logging.Logger;
035:
036:        import com.jeta.forms.gui.common.FormException;
037:
038:        /**
039:         * This class is a helper class for logging messages in the application. This
040:         * class also initializes the logging API for the application
041:         * 
042:         * @author Jeff Tassin
043:         */
044:        public class FormsLogger {
045:            /**
046:             * The name of our logger.
047:             */
048:            public static final String LOGGER_NAME = "forms.logger";
049:
050:            /**
051:             * Converts the stack trace for the given Throwable into a String
052:             * 
053:             * @param t
054:             *            the throwable whose stack trace we wish to retrive.
055:             * @return a String representation of the stack trace for the given
056:             *         Throwable
057:             */
058:            private static String getStackTrace(Throwable t) {
059:                StringWriter writer = new StringWriter();
060:                t.printStackTrace(new PrintWriter(writer));
061:                return writer.toString();
062:            }
063:
064:            /**
065:             * Helper method that sends a message to the logger only when debugging
066:             * 
067:             * @param msg
068:             *            the message to send to the logger
069:             */
070:            public static void debug(String msg) {
071:                Logger logger = Logger.getLogger(LOGGER_NAME);
072:                logger.finest(msg);
073:            }
074:
075:            /**
076:             * Helper method that logs an exception.
077:             * 
078:             * @param t
079:             *            the Throwable whose message and stack trace we send to the
080:             *            logger.
081:             */
082:            public static void debug(Throwable t) {
083:                Logger logger = Logger.getLogger(LOGGER_NAME);
084:                if (t instanceof  FormException) {
085:                    Exception e = ((FormException) t).getSourceException();
086:                    if (e != null)
087:                        t = e;
088:                }
089:
090:                String msg = getStackTrace(t);
091:                logger.finest(msg);
092:            }
093:
094:            /**
095:             * Helper method that sends a message to the logger.
096:             * 
097:             * @param msg
098:             *            the message that is sent to the logger.
099:             */
100:            public static void fine(String msg) {
101:                Logger logger = Logger.getLogger(LOGGER_NAME);
102:                logger.fine(msg);
103:            }
104:
105:            /**
106:             * Forwards a severe log message to the application logger
107:             * 
108:             * @param msg
109:             *            the message to send to the logger.
110:             */
111:            public static void severe(String msg) {
112:                Logger logger = Logger.getLogger(LOGGER_NAME);
113:                logger.fine(msg);
114:            }
115:
116:            /**
117:             * Forwards a severe log message to the application logger.
118:             * 
119:             * @param t
120:             *            the Throwable whose message and stack trace is sent to the
121:             *            logger.
122:             */
123:            public static void severe(Throwable t) {
124:                Logger logger = Logger.getLogger(LOGGER_NAME);
125:                if (t instanceof  FormException) {
126:                    Exception e = ((FormException) t).getSourceException();
127:                    if (e != null)
128:                        t = e;
129:                }
130:                String msg = getStackTrace(t);
131:                logger.severe(msg);
132:            }
133:        }
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