content: /*
   * Licensed to the Apache Software Foundation (ASF) under one or more
   * contributor license agreements.  See the NOTICE file distributed with
   * this work for additional information regarding copyright ownership.
   * The ASF licenses this file to You under the Apache License, Version 2.0
   * (the "License"); you may not use this file except in compliance with
   * the License.  You may obtain a copy of the License at
   *
   *      http://www.apache.org/licenses/LICENSE-2.0
   *
   * Unless required by applicable law or agreed to in writing, software
   * distributed under the License is distributed on an "AS IS" BASIS,
   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
   * See the License for the specific language governing permissions and
   * limitations under the License.
   */
  package com.example.demo;
  
  import org.apache.camel.Exchange;
  
  public class MergeAggregationStrategy implements org.apache.camel.AggregationStrategy {
      @Override
      public Exchange aggregate(Exchange oldExchange, Exchange newExchange) {
          if (oldExchange == null)
          {
              return newExchange;
          }
          String oldPayload = oldExchange.getIn().getBody(String.class);
          String newPayload = newExchange.getIn().getBody(String.class);
          String result = oldPayload + ", " + newPayload;
          oldExchange.getIn().setBody(result);
          return oldExchange;
      }
  
      @Override
      public void onCompletion(Exchange exchange) {
          String payload = exchange.getIn().getBody(String.class);
          String result = "["+payload+"]";
          exchange.getIn().setBody(result);
      }
  }
  