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    package org.apache.camel.impl;
018    
019    import org.apache.camel.Endpoint;
020    import org.apache.camel.PollingConsumer;
021    import org.apache.camel.spi.ExceptionHandler;
022    import org.apache.camel.support.ServiceSupport;
023    import org.slf4j.Logger;
024    import org.slf4j.LoggerFactory;
025    
026    /**
027     * A useful base class for implementations of {@link PollingConsumer}
028     * 
029     * @version 
030     */
031    public abstract class PollingConsumerSupport extends ServiceSupport implements PollingConsumer {
032        protected final transient Logger log = LoggerFactory.getLogger(getClass());
033        private final Endpoint endpoint;
034        private ExceptionHandler exceptionHandler;
035    
036        public PollingConsumerSupport(Endpoint endpoint) {
037            this.endpoint = endpoint;
038        }
039    
040        @Override
041        public String toString() {
042            return "PollingConsumer on " + endpoint;
043        }
044    
045        public Endpoint getEndpoint() {
046            return endpoint;
047        }
048    
049        public ExceptionHandler getExceptionHandler() {
050            if (exceptionHandler == null) {
051                exceptionHandler = new LoggingExceptionHandler(getClass());
052            }
053            return exceptionHandler;
054        }
055    
056        public void setExceptionHandler(ExceptionHandler exceptionHandler) {
057            this.exceptionHandler = exceptionHandler;
058        }
059    
060        /**
061         * Handles the given exception using the {@link #getExceptionHandler()}
062         * 
063         * @param t the exception to handle
064         */
065        protected void handleException(Throwable t) {
066            getExceptionHandler().handleException(t);
067        }
068    }