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    /**
029     * A grouped exchange that groups together other exchanges, as a holder object.
030     * <p/>
031     * This grouped exchange is useable for the aggregator so multiple exchanges can be grouped
032     * into this single exchange and thus only one exchange is sent for further processing.
033     */
034    public class GroupedExchange extends DefaultExchange {
035    
036        private List<Exchange> exchanges = new ArrayList<Exchange>();
037    
038        public GroupedExchange(CamelContext context) {
039            super(context);
040        }
041    
042        public GroupedExchange(CamelContext context, ExchangePattern pattern) {
043            super(context, pattern);
044        }
045    
046        public GroupedExchange(Exchange parent) {
047            super(parent);
048        }
049    
050        public GroupedExchange(Endpoint fromEndpoint) {
051            super(fromEndpoint);
052        }
053    
054        public GroupedExchange(Endpoint fromEndpoint, ExchangePattern pattern) {
055            super(fromEndpoint, pattern);
056        }
057    
058        public List<Exchange> getExchanges() {
059            return exchanges;
060        }
061    
062        public void setExchanges(List<Exchange> exchanges) {
063            this.exchanges = exchanges;
064        }
065    
066        public void addExchange(Exchange exchange) {
067            this.exchanges.add(exchange);
068        }
069    
070        public int size() {
071            return exchanges.size();
072        }
073    
074        public Exchange get(int index) {
075            return exchanges.get(index);
076        }
077    
078        @Override
079        public String toString() {
080            return "Exchange[Grouped with: " + exchanges.size() + " exchanges]";
081        }
082    
083    }