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.Processor; 022 import org.apache.camel.RuntimeExchangeException; 023 import org.apache.camel.util.ServiceHelper; 024 025 /** 026 * A simple implementation of {@link org.apache.camel.PollingConsumer} which just uses 027 * a {@link Processor}. This implementation does not support timeout based 028 * receive methods such as {@link #receive(long)} 029 * 030 * @version $Revision: 751655 $ 031 */ 032 public class ProcessorPollingConsumer extends PollingConsumerSupport { 033 private Processor processor; 034 035 public ProcessorPollingConsumer(Endpoint endpoint, Processor processor) { 036 super(endpoint); 037 this.processor = processor; 038 } 039 040 protected void doStart() throws Exception { 041 ServiceHelper.startService(processor); 042 } 043 044 protected void doStop() throws Exception { 045 ServiceHelper.stopService(processor); 046 } 047 048 public Exchange receive() { 049 Exchange exchange = getEndpoint().createExchange(); 050 try { 051 processor.process(exchange); 052 } catch (Exception e) { 053 throw new RuntimeExchangeException(e, exchange); 054 } 055 return exchange; 056 } 057 058 public Exchange receiveNoWait() { 059 return receive(); 060 } 061 062 public Exchange receive(long timeout) { 063 return receive(); 064 } 065 }