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.PollingConsumer; 022 import org.apache.camel.Processor; 023 import org.apache.camel.RuntimeExchangeException; 024 import org.apache.camel.util.ServiceHelper; 025 026 /** 027 * A simple implementation of {@link PollingConsumer} which just uses 028 * a {@link Processor}. This implementation does not support timeout based 029 * receive methods such as {@link #receive(long)} 030 * 031 * @version $Revision: 36321 $ 032 */ 033 public class ProcessorPollingConsumer extends PollingConsumerSupport { 034 private Processor processor; 035 036 public ProcessorPollingConsumer(Endpoint endpoint, Processor processor) { 037 super(endpoint); 038 this.processor = processor; 039 } 040 041 protected void doStart() throws Exception { 042 ServiceHelper.startService(processor); 043 } 044 045 protected void doStop() throws Exception { 046 ServiceHelper.stopService(processor); 047 } 048 049 public Exchange receive() { 050 Exchange exchange = getEndpoint().createExchange(); 051 try { 052 processor.process(exchange); 053 } catch (Exception e) { 054 throw new RuntimeExchangeException(e, exchange); 055 } 056 return exchange; 057 } 058 059 public Exchange receiveNoWait() { 060 return receive(); 061 } 062 063 public Exchange receive(long timeout) { 064 return receive(); 065 } 066 }