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.seda; 018 019 import java.util.List; 020 021 import org.apache.camel.Endpoint; 022 import org.apache.camel.Exchange; 023 import org.apache.camel.impl.PollingConsumerSupport; 024 025 /** 026 * @version $Revision: 36321 $ 027 */ 028 public class ListPollingConsumer extends PollingConsumerSupport { 029 private final List<Exchange> exchanges; 030 031 public ListPollingConsumer(Endpoint endpoint, List<Exchange> exchanges) { 032 super(endpoint); 033 this.exchanges = exchanges; 034 } 035 036 public Exchange receive() { 037 return receiveNoWait(); 038 } 039 040 public Exchange receiveNoWait() { 041 if (exchanges.isEmpty()) { 042 return null; 043 } else { 044 return exchanges.remove(0); 045 } 046 } 047 048 public Exchange receive(long timeout) { 049 return receiveNoWait(); 050 } 051 052 protected void doStart() throws Exception { 053 } 054 055 protected void doStop() throws Exception { 056 } 057 }