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 org.apache.camel.Exchange;
020    import org.apache.camel.Message;
021    import org.apache.camel.Processor;
022    
023    /**
024     * A processor which converts the payload of the input message to be of the given type
025     * <p/>
026     * If the convertions fails an {@link org.apache.camel.InvalidPayloadException} is thrown.
027     *
028     * @version $Revision: 771351 $
029     */
030    public class ConvertBodyProcessor implements Processor {
031        private final Class type;
032        private final String charset;
033    
034        public ConvertBodyProcessor(Class type) {
035            this.type = type;
036            this.charset = null;
037        }
038    
039        public ConvertBodyProcessor(Class type, String charset) {
040            this.type = type;
041            this.charset = charset;
042        }
043    
044        @Override
045        public String toString() {
046            return "convertBodyTo[" + type.getCanonicalName() + "]";
047        }
048    
049        @SuppressWarnings("unchecked")
050        public void process(Exchange exchange) throws Exception {
051            Message in = exchange.getIn();
052            if (charset != null) {
053                exchange.setProperty(Exchange.CHARSET_NAME, charset);
054            }
055            Object value = in.getMandatoryBody(type);
056    
057            if (exchange.getPattern().isOutCapable()) {
058                Message out = exchange.getOut();
059                out.copyFrom(in);
060                out.setBody(value);
061            } else {
062                in.setBody(value);
063            }
064        }
065    
066        public Class getType() {
067            return type;
068        }
069    }