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.commons.logging.log4j.log4j12;
019    
020    
021    import java.util.List;
022    
023    import org.apache.commons.logging.log4j.StandardTests;
024    import org.apache.log4j.AppenderSkeleton;
025    import org.apache.log4j.spi.LoggingEvent;
026    
027    /**
028     * A custom implementation of <code>org.apache.log4j.Appender</code> which
029     * converts the log4j-specific log event record into a representation that
030     * doesn't have a dependency on log4j and stores that new representation into
031     * an external list.
032     */
033    
034    public class TestAppender extends AppenderSkeleton {
035    
036        /**
037         * Constructor.
038         */
039        public TestAppender(List logEvents) {
040            events = logEvents;
041        }
042    
043        // ----------------------------------------------------- Instance Variables
044    
045    
046        // The set of logged events for this appender
047        private List events;
048    
049    
050        // ------------------------------------------------------- Appender Methods
051    
052        protected void append(LoggingEvent event) {
053            StandardTests.LogEvent lev = new StandardTests.LogEvent();
054            
055            lev.level = event.getLevel().toString();
056    
057            if (event.getMessage() == null)
058                lev.msg = null;
059            else
060                lev.msg = event.getMessage().toString();
061            
062            if (event.getThrowableInformation() == null)
063                lev.throwable = null;
064            else
065                lev.throwable = event.getThrowableInformation().getThrowable();
066    
067            events.add(lev);
068        }
069    
070    
071        public void close() {
072        }
073    
074    
075        public boolean requiresLayout() {
076            return (false);
077        }
078    
079    
080    }