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.Exchange;
021    import org.apache.camel.ExchangePattern;
022    import org.apache.camel.Producer;
023    import org.apache.commons.logging.Log;
024    import org.apache.commons.logging.LogFactory;
025    
026    /**
027     * A default implementation of @{link Producer} for implementation inheritence
028     *
029     * @version $Revision: 789087 $
030     */
031    public abstract class DefaultProducer extends ServiceSupport implements Producer {
032        private final transient Log log = LogFactory.getLog(getClass());
033        private final Endpoint endpoint;
034    
035        public DefaultProducer(Endpoint endpoint) {
036            this.endpoint = endpoint;
037        }
038    
039        @Override
040        public String toString() {
041            return "Producer[" + endpoint.getEndpointUri() + "]";
042        }
043    
044        public Endpoint getEndpoint() {
045            return endpoint;
046        }
047    
048        public Exchange createExchange() {
049            return endpoint.createExchange();
050        }
051    
052        public Exchange createExchange(ExchangePattern pattern) {
053            return endpoint.createExchange(pattern);
054        }
055    
056        public Exchange createExchange(Exchange exchange) {
057            return endpoint.createExchange(exchange);
058        }
059    
060        public boolean isSingleton() {
061            return true;
062        }
063    
064        protected void doStart() throws Exception {
065            if (log.isDebugEnabled()) {
066                log.debug("Starting producer: " + this);
067            }
068        }
069    
070        protected void doStop() throws Exception {
071            if (log.isDebugEnabled()) {
072                log.debug("Stopping producer: " + this);
073            }
074        }
075    }