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 org.apache.camel.component.mina;
  
  import org.apache.camel.Exchange;
  import org.apache.camel.support.DefaultExchangeHolder;
  
  /**
   * Helper to get and set the correct payload when transferring data using camel-mina. Always use this helper instead of
   * direct access on the exchange object.
   * <p/>
   * This helper ensures that we can also transfer exchange objects over the wire using the <tt>transferExchange=true</tt>
   * option.
   */
  public final class MinaPayloadHelper {
  
      private MinaPayloadHelper() {
          //Utility Class
      }
  
      public static Object getIn(MinaEndpoint endpoint, Exchange exchange) {
          if (endpoint.getConfiguration().isTransferExchange()) {
              // we should transfer the entire exchange over the wire (includes in/out)
              return DefaultExchangeHolder.marshal(exchange);
          } else {
              // normal transfer using the body only
              return exchange.getIn().getBody();
          }
      }
  
      public static Object getOut(MinaEndpoint endpoint, Exchange exchange) {
          if (endpoint.getConfiguration().isTransferExchange()) {
              // we should transfer the entire exchange over the wire (includes in/out)
              return DefaultExchangeHolder.marshal(exchange);
          } else {
              // normal transfer using the body only
              return exchange.getOut().getBody();
          }
      }
  
      public static void setIn(Exchange exchange, Object payload) {
          if (payload instanceof DefaultExchangeHolder) {
              DefaultExchangeHolder.unmarshal(exchange, (DefaultExchangeHolder) payload);
          } else {
              // normal transfer using the body only
              exchange.getIn().setBody(payload);
          }
      }
  
      public static void setOut(Exchange exchange, Object payload) {
          if (payload instanceof DefaultExchangeHolder) {
              DefaultExchangeHolder.unmarshal(exchange, (DefaultExchangeHolder) payload);
          } else {
              // normal transfer using the body only and preserve the headers
              exchange.getOut().setHeaders(exchange.getIn().getHeaders());
              exchange.getOut().setBody(payload);
          }
      }
  }
  