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.proxy.interceptor.logging;
019    
020    import org.apache.commons.logging.LogFactory;
021    import org.apache.commons.logging.Log;
022    
023    /**
024     * An interceptor which logs method invocations using an <a href="http://commons.apache.org/logging">Apache Commons
025     * Logging</a> {@link Log} object at the "trace" level.
026     * 
027     * @auothor James Carman
028     * @since 1.1
029     */
030    public class CommonsLoggingInterceptor extends AbstractLoggingInterceptor
031    {
032    //**********************************************************************************************************************
033    // Fields
034    //**********************************************************************************************************************
035    
036        private final String logName;
037    
038    //**********************************************************************************************************************
039    // Constructors
040    //**********************************************************************************************************************
041    
042        public CommonsLoggingInterceptor( String logName )
043        {
044            this.logName = logName;
045        }
046    
047        public CommonsLoggingInterceptor(Class clazz)
048        {
049            this(clazz.getName());
050        }
051    
052    //**********************************************************************************************************************
053    // Other Methods
054    //**********************************************************************************************************************
055    
056        private Log getLog()
057        {
058            return LogFactory.getLog(logName);
059        }
060    
061        protected boolean isLoggingEnabled()
062        {
063            return getLog().isTraceEnabled();
064        }
065    
066        protected void logMessage( String message )
067        {
068            getLog().trace(message);
069        }
070    
071        protected void logMessage( String message, Throwable t )
072        {
073            getLog().trace(message, t);
074        }
075    }