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.InputStream;
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 import org.apache.camel.util.ExchangeHelper;
026 import org.apache.camel.util.ObjectHelper;
027
028 /**
029 * Unmarshals the body of the incoming message using the given
030 * <a href="http://camel.apache.org/data-format.html">data format</a>
031 *
032 * @version $Revision: 749193 $
033 */
034 public class UnmarshalProcessor implements Processor {
035 private final DataFormat dataFormat;
036
037 public UnmarshalProcessor(DataFormat dataFormat) {
038 this.dataFormat = dataFormat;
039 }
040
041 public void process(Exchange exchange) throws Exception {
042 ObjectHelper.notNull(dataFormat, "dataFormat");
043
044 InputStream stream = ExchangeHelper.getMandatoryInBody(exchange, InputStream.class);
045 try {
046 // lets setup the out message before we invoke the dataFormat
047 // so that it can mutate it if necessary
048 Message out = exchange.getOut(true);
049 out.copyFrom(exchange.getIn());
050
051 Object result = dataFormat.unmarshal(exchange, stream);
052 out.setBody(result);
053 } finally {
054 if (stream != null) {
055 stream.close();
056 }
057 }
058 }
059 }