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.component.ibatis;
018    
019    import org.apache.camel.Exchange;
020    import org.apache.camel.Message;
021    import org.apache.camel.RuntimeCamelException;
022    import org.apache.camel.impl.PollingConsumerSupport;
023    
024    /**
025     * @version $Revision: 460 $
026     */
027    public class IBatisPollingConsumer extends PollingConsumerSupport {
028        private final IBatisEndpoint endpoint;
029    
030        public IBatisPollingConsumer(IBatisEndpoint endpoint) {
031            super(endpoint);
032            this.endpoint = endpoint;
033        }
034    
035        public Exchange receive(long timeout) {
036            return receiveNoWait();
037        }
038    
039        public Exchange receive() {
040            return receiveNoWait();
041        }
042    
043        public Exchange receiveNoWait() {
044            try {
045                Exchange exchange = endpoint.createExchange();
046                Message in = exchange.getIn();
047                endpoint.query(in);
048                return exchange;
049            } catch (Exception e) {
050                throw new RuntimeCamelException("Failed to poll: " + endpoint + ". Reason: " + e, e);
051            }
052        }
053    
054        protected void doStart() throws Exception {
055        }
056    
057        protected void doStop() throws Exception {
058        }
059    }