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.processor;
018    
019    import java.io.ByteArrayOutputStream;
020    
021    import org.apache.camel.Exchange;
022    import org.apache.camel.Message;
023    import org.apache.camel.Processor;
024    import org.apache.camel.spi.DataFormat;
025    
026    /**
027     * Marshals the body of the incoming message using the given
028     * <a href="http://activemq.apache.org/camel/data-format.html">data format</a>
029     *
030     * @version $Revision: 382 $
031     */
032    public class MarshalProcessor implements Processor {
033        private final DataFormat dataFormat;
034    
035        public MarshalProcessor(DataFormat dataFormat) {
036            this.dataFormat = dataFormat;
037        }
038    
039        public void process(Exchange exchange) throws Exception {
040            ByteArrayOutputStream buffer = new ByteArrayOutputStream();
041            Message in = exchange.getIn();
042            Object body = in.getBody();
043    
044            // lets setup the out message before we invoke the dataFormat
045            // so that it can mutate it if necessary
046            Message out = exchange.getOut(true);
047            out.copyFrom(in);
048    
049            dataFormat.marshal(exchange, body, buffer);
050            byte[] data = buffer.toByteArray();
051            out.setBody(data);
052        }
053    }