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 java.util.ArrayList;
020    import java.util.List;
021    
022    import org.apache.camel.CamelContext;
023    import org.apache.camel.Endpoint;
024    import org.apache.camel.Exchange;
025    import org.apache.camel.ExchangePattern;
026    
027    /**
028     * A grouped exchange that groups together other exchanges, as a holder object.
029     * <p/>
030     * This grouped exchange is useable for the aggregator so multiple exchanges can be grouped
031     * into this single exchange and thus only one exchange is sent for further processing.
032     */
033    public class GroupedExchange extends DefaultExchange {
034    
035        private List<Exchange> exchanges = new ArrayList<Exchange>();
036    
037        public GroupedExchange(CamelContext context) {
038            super(context);
039        }
040    
041        public GroupedExchange(CamelContext context, ExchangePattern pattern) {
042            super(context, pattern);
043        }
044    
045        public GroupedExchange(Exchange parent) {
046            super(parent);
047        }
048    
049        public GroupedExchange(Endpoint fromEndpoint) {
050            super(fromEndpoint);
051        }
052    
053        public GroupedExchange(Endpoint fromEndpoint, ExchangePattern pattern) {
054            super(fromEndpoint, pattern);
055        }
056    
057        public List<Exchange> getExchanges() {
058            return exchanges;
059        }
060    
061        public void setExchanges(List<Exchange> exchanges) {
062            this.exchanges = exchanges;
063        }
064    
065        public void addExchange(Exchange exchange) {
066            this.exchanges.add(exchange);
067        }
068    
069        public int size() {
070            return exchanges.size();
071        }
072    
073        public Exchange get(int index) {
074            return exchanges.get(index);
075        }
076    
077        @Override
078        public String toString() {
079            return "Exchange[Grouped with: " + exchanges.size() + " exchanges]";
080        }
081    
082    }