Source Code Cross Referenced for LogEvent.java in  » Development » LogKit » org » apache » log » Java Source Code / Java DocumentationJava Source Code and Java Documentation

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Java Source Code / Java Documentation » Development » LogKit » org.apache.log 
Source Cross Referenced  Class Diagram Java Document (Java Doc) 


001:        /* ====================================================================
002:         * The Apache Software License, Version 1.1
003:         *
004:         * Copyright (c) 1997-2003 The Apache Software Foundation. All rights
005:         * reserved.
006:         *
007:         * Redistribution and use in source and binary forms, with or without
008:         * modification, are permitted provided that the following conditions
009:         * are met:
010:         *
011:         * 1. Redistributions of source code must retain the above copyright
012:         *    notice, this list of conditions and the following disclaimer.
013:         *
014:         * 2. Redistributions in binary form must reproduce the above copyright
015:         *    notice, this list of conditions and the following disclaimer in
016:         *    the documentation and/or other materials provided with the
017:         *    distribution.
018:         *
019:         * 3. The end-user documentation included with the redistribution,
020:         *    if any, must include the following acknowledgment:
021:         *    "This product includes software developed by the
022:         *    Apache Software Foundation (http://www.apache.org/)."
023:         *    Alternately, this acknowledgment may appear in the software
024:         *    itself, if and wherever such third-party acknowledgments
025:         *    normally appear.
026:         *
027:         * 4. The names "Jakarta", "Avalon", and "Apache Software Foundation"
028:         *    must not be used to endorse or promote products derived from this
029:         *    software without prior written permission. For written
030:         *    permission, please contact apache@apache.org.
031:         *
032:         * 5. Products derived from this software may not be called "Apache",
033:         *    nor may "Apache" appear in their name, without prior written
034:         *    permission of the Apache Software Foundation.
035:         *
036:         * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
037:         * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
038:         * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
039:         * DISCLAIMED. IN NO EVENT SHALL THE APACHE SOFTWARE FOUNDATION OR
040:         * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
041:         * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
042:         * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
043:         * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
044:         * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
045:         * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
046:         * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
047:         * SUCH DAMAGE.
048:         * ====================================================================
049:         *
050:         * This software consists of voluntary contributions made by many
051:         * individuals on behalf of the Apache Software Foundation. For more
052:         * information on the Apache Software Foundation, please see
053:         * <http://www.apache.org/>.
054:         */
055:        package org.apache.log;
056:
057:        import java.io.ObjectStreamException;
058:        import java.io.Serializable;
059:
060:        /**
061:         * This class encapsulates each individual log event.
062:         * LogEvents usually originate at a Logger and are routed
063:         * to LogTargets.
064:         *
065:         * @author <a href="mailto:dev@avalon.apache.org">Avalon Development Team</a>
066:         * @author <a href="mailto:peter@apache.org">Peter Donald</a>
067:         */
068:        public final class LogEvent implements  Serializable {
069:            //A Constant used when retrieving time relative to start of applicaiton start
070:            private static final long START_TIME = System.currentTimeMillis();
071:
072:            ///The category that this LogEvent concerns. (Must not be null)
073:            private String m_category;
074:
075:            ///The message to be logged. (Must not be null)
076:            private String m_message;
077:
078:            ///The exception that caused LogEvent if any. (May be null)
079:            private Throwable m_throwable;
080:
081:            ///The time in millis that LogEvent occurred
082:            private long m_time;
083:
084:            ///The priority of LogEvent. (Must not be null)
085:            private Priority m_priority;
086:
087:            ///The context map associated with LogEvent. (May be null).
088:            private ContextMap m_contextMap;
089:
090:            /**
091:             * The context stack associated with LogEvent. (May be null)
092:             * @deprecated ContextStack has been deprecated and thus so has this field.
093:             */
094:            private transient ContextStack m_contextStack;
095:
096:            /**
097:             * Get Priority for LogEvent.
098:             *
099:             * @return the LogEvent Priority
100:             */
101:            public final Priority getPriority() {
102:                return m_priority;
103:            }
104:
105:            /**
106:             * Set the priority of LogEvent.
107:             *
108:             * @param priority the new LogEvent priority
109:             */
110:            public final void setPriority(final Priority priority) {
111:                m_priority = priority;
112:            }
113:
114:            /**
115:             * Get ContextMap associated with LogEvent
116:             *
117:             * @return the ContextMap
118:             */
119:            public final ContextMap getContextMap() {
120:                return m_contextMap;
121:            }
122:
123:            /**
124:             * Set the ContextMap for this LogEvent.
125:             *
126:             * @param contextMap the context map
127:             */
128:            public final void setContextMap(final ContextMap contextMap) {
129:                m_contextMap = contextMap;
130:            }
131:
132:            /**
133:             * Get ContextStack associated with LogEvent
134:             *
135:             * @return the ContextStack
136:             * @deprecated ContextStack has been deprecated and thus so has this method
137:             */
138:            public final ContextStack getContextStack() {
139:                return m_contextStack;
140:            }
141:
142:            /**
143:             * Set the ContextStack for this LogEvent.
144:             * Note that if this LogEvent ever changes threads, the
145:             * ContextStack must be cloned.
146:             *
147:             * @param contextStack the context stack
148:             * @deprecated ContextStack has been deprecated and thus so has this method
149:             */
150:            public final void setContextStack(final ContextStack contextStack) {
151:                m_contextStack = contextStack;
152:            }
153:
154:            /**
155:             * Get the category that LogEvent relates to.
156:             *
157:             * @return the name of category
158:             */
159:            public final String getCategory() {
160:                return m_category;
161:            }
162:
163:            /**
164:             * Get the message associated with event.
165:             *
166:             * @return the message
167:             */
168:            public final String getMessage() {
169:                return m_message;
170:            }
171:
172:            /**
173:             * Get throwabe instance associated with event.
174:             *
175:             * @return the Throwable
176:             */
177:            public final Throwable getThrowable() {
178:                return m_throwable;
179:            }
180:
181:            /**
182:             * Get the absolute time of the log event.
183:             *
184:             * @return the absolute time
185:             */
186:            public final long getTime() {
187:                return m_time;
188:            }
189:
190:            /**
191:             * Get the time of the log event relative to start of application.
192:             *
193:             * @return the time
194:             */
195:            public final long getRelativeTime() {
196:                return m_time - START_TIME;
197:            }
198:
199:            /**
200:             * Set the LogEvent category.
201:             *
202:             * @param category the category
203:             */
204:            public final void setCategory(final String category) {
205:                m_category = category;
206:            }
207:
208:            /**
209:             * Set the message for LogEvent.
210:             *
211:             * @param message the message
212:             */
213:            public final void setMessage(final String message) {
214:                m_message = message;
215:            }
216:
217:            /**
218:             * Set the throwable for LogEvent.
219:             *
220:             * @param throwable the instance of Throwable
221:             */
222:            public final void setThrowable(final Throwable throwable) {
223:                m_throwable = throwable;
224:            }
225:
226:            /**
227:             * Set the absolute time of LogEvent.
228:             *
229:             * @param time the time
230:             */
231:            public final void setTime(final long time) {
232:                m_time = time;
233:            }
234:
235:            /**
236:             * Helper method that replaces deserialized priority with correct singleton.
237:             *
238:             * @return the singleton version of object
239:             * @exception ObjectStreamException if an error occurs
240:             */
241:            private Object readResolve() throws ObjectStreamException {
242:                if (null == m_category) {
243:                    m_category = "";
244:                }
245:                if (null == m_message) {
246:                    m_message = "";
247:                }
248:
249:                String priorityName = "";
250:                if (null != m_priority) {
251:                    priorityName = m_priority.getName();
252:                }
253:
254:                m_priority = Priority.getPriorityForName(priorityName);
255:
256:                return this;
257:            }
258:        }
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