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    
023    /**
024     * A useful base class for implementations of {@link PollingConsumer}
025     * 
026     * @version $Revision: 749201 $
027     */
028    public abstract class PollingConsumerSupport extends ServiceSupport implements PollingConsumer {
029        private final Endpoint endpoint;
030        private ExceptionHandler exceptionHandler;
031    
032        public PollingConsumerSupport(Endpoint endpoint) {
033            this.endpoint = endpoint;
034        }
035    
036        @Override
037        public String toString() {
038            return "PullConsumer on " + endpoint;
039        }
040    
041        public Endpoint getEndpoint() {
042            return endpoint;
043        }
044    
045        public ExceptionHandler getExceptionHandler() {
046            if (exceptionHandler == null) {
047                exceptionHandler = new LoggingExceptionHandler(getClass());
048            }
049            return exceptionHandler;
050        }
051    
052        public void setExceptionHandler(ExceptionHandler exceptionHandler) {
053            this.exceptionHandler = exceptionHandler;
054        }
055    
056        /**
057         * Handles the given exception using the {@link #getExceptionHandler()}
058         * 
059         * @param t the exception to handle
060         */
061        protected void handleException(Throwable t) {
062            getExceptionHandler().handleException(t);
063        }
064    }